ENVOWater Treatment Chemicals
Refinery process towers and a distant plant view
Oil, Gas & Oily Wastewater

Refinery & Petrochemical Wastewater

Demulsification & oil–water separation; Coagulation, flocculation & clarification; Color & difficult-organic treatment

Refinery process towers and a distant plant view, used as an industry or equipment reference. Process selection depends on water quality and project conditions.
Your process challenges

Chemistry matched to real operating conditions.

Distinguish oil separation, solids control and system protection for the specific produced-water or industrial-water circuit.

Treatment approach

Refinery & Petrochemical Wastewater: understand the treatment stages first.

Collect refinery streams separately. After oily-water pretreatment, select physicochemical, biological or advanced treatment according to organic loading and inhibition.

Check together during selection

Differentiate programs by oil phase, salinity, temperature and downstream use. Evaluate demulsification, separation, scale control and microbiological control separately.

Compare candidate products below by treatment objective. Evaluate different routes separately; the list does not imply simultaneous dosing.

Find products by treatment objective
Operating conditions and product routes

Refinery & Petrochemical Wastewater: match requirements to each treatment stage.

Compare treatment objectives, chemical functions and verification criteria stage by stage. Products in the table may be alternatives or serve different stages; they are not necessarily dosed together.

Define influent and objectives first

Share segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets. This helps distinguish oil, particle, scaling and microbial-control tasks and narrow the product and specification range.

Then confirm assessment limits

Distinguish programs by oil phase, salinity, temperature and downstream use. Assess demulsification, separation, scale control and microbial control separately.

Compare all treatment routesProduct roles, conditions and verification
Refinery & Petrochemical Wastewater: treatment objectives and product routes
Treatment objective / stageProduct routes to compareFunction / applicable conditionsChecks before selection
Demulsification & oil–water separationDemulsification & oil removalFilter by this objective

Identify free versus emulsified oil, surfactants and separation equipment. Compare demulsification and subsequent coagulation/separation using representative wastewater.

View each product's function and conditions
Industrial Wastewater Demulsifier
Function:Adjusts interfacial and separation properties in emulsified-oil or paint systems. It is distinct from a general inorganic coagulant.
Conditions:Define the oil phase, emulsifier or coating system, then verify demulsification/detackification and separation with representative water samples.
Oil-Removal Coagulant
Function:Adjusts interfacial and separation properties in emulsified-oil or paint systems. It is distinct from a general inorganic coagulant.
Conditions:Define the oil phase, emulsifier or coating system, then verify demulsification/detackification and separation with representative water samples.
Polyamine Coagulant
Function:Supports coagulation, flocculation and solid–liquid separation after demulsification or paint detackification.
Conditions:Run combined trials with the actual emulsified-oil/coating system, pH and flotation/settling equipment.
Poly(diallyldimethylammonium Chloride)
Function:Supports coagulation, flocculation and solid–liquid separation after demulsification or paint detackification.
Conditions:Run combined trials with the actual emulsified-oil/coating system, pH and flotation/settling equipment.
Polyaluminium Chloride
Function:Supports coagulation, flocculation and solid–liquid separation after demulsification or paint detackification.
Conditions:Run combined trials with the actual emulsified-oil/coating system, pH and flotation/settling equipment.
Polyacrylamide
Function:Supports coagulation, flocculation and solid–liquid separation after demulsification or paint detackification.
Conditions:Run combined trials with the actual emulsified-oil/coating system, pH and flotation/settling equipment.
View product-specific checks
Industrial Wastewater Demulsifier
Refinery & Petrochemical Wastewater: Oil phase composition; Source of emulsification; Temperature & pH; Trial results; Separation equipment; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Oil-Removal Coagulant
Refinery & Petrochemical Wastewater: Oil phase & emulsion state; pH conditions; Chemical composition; Downstream separation method; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Polyamine Coagulant
Refinery & Petrochemical Wastewater: Composition; Active content & method; Viscosity test conditions; pH; Application trials; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Poly(diallyldimethylammonium Chloride)
Refinery & Petrochemical Wastewater: Nominal concentration & test basis; Viscosity & test conditions; Residual monomer; pH; End-use documents; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Polyaluminium Chloride
Refinery & Petrochemical Wastewater: Al₂O₃ content; Basicity; Insoluble matter; pH test conditions; Impurity limits for the intended use; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Polyacrylamide
Refinery & Petrochemical Wastewater: Ionic type & charge characteristics; Viscosity and test concentration/temperature; Residual monomer & test report; Dissolution conditions; Trial evaluation criteria; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.

Compare results using representative water samples or site data, retaining the test methods and operating conditions.

Coagulation, flocculation & clarificationCoagulation & solid–liquid separationFilter by this objective

Review water source, turbidity or suspended solids, pH, alkalinity and the settling or flotation process. Potable-water applications require product-specific end-use documentation.

View each product's function and conditions
Polyaluminium Chloride
Function:Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions:Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Aluminium Sulfate
Function:Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions:Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Ferric Chloride
Function:Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions:Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Ferric Sulfate
Function:Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions:Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Polyferric Sulfate
Function:Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions:Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Polyamine Coagulant
Function:An organic coagulant option that destabilizes colloids before further flocculation and solid–liquid separation.
Conditions:Define the sample's charge demand, intended use and downstream process. A polymer name alone does not establish dosage or grade.
Poly(diallyldimethylammonium Chloride)
Function:An organic coagulant option that destabilizes colloids before further flocculation and solid–liquid separation.
Conditions:Define the sample's charge demand, intended use and downstream process. A polymer name alone does not establish dosage or grade.
Polyacrylamide
Function:Polymer bridging and charge effects help build separable flocs. Flocculation does not remove dissolved salts or all COD.
Conditions:Define particle and sludge properties, and match preparation, shear and settling/flotation/dewatering trials to the selected grade.
Polyacrylamide Emulsion
Function:Polymer bridging and charge effects help build separable flocs. Flocculation does not remove dissolved salts or all COD.
Conditions:Define particle and sludge properties, and match preparation, shear and settling/flotation/dewatering trials to the selected grade.
Aluminium Chlorohydrate
Function:Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions:Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Sodium Aluminate
Function:Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions:Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Ferrous Chloride
Function:Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions:Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Biobased Flocculant
Function:A supplementary coagulation route for specific raw material sources or water conditions.
Conditions:Have the material composition, end-use documents and comparison trials on the same water sample available.
View product-specific checks
Polyaluminium Chloride
Refinery & Petrochemical Wastewater: Al₂O₃ content; Basicity; Insoluble matter; pH test conditions; Impurity limits for the intended use; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Aluminium Sulfate
Refinery & Petrochemical Wastewater: Al₂O₃ content; Iron; Insoluble matter; pH conditions; Hydration state; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Ferric Chloride
Refinery & Petrochemical Wastewater: Effective iron content; Free acid; Impurities; Form & trial results; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Ferric Sulfate
Refinery & Petrochemical Wastewater: Iron content; Free acid; Insoluble matter; Impurity requirements for the intended use; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Polyferric Sulfate
Refinery & Petrochemical Wastewater: Total iron; Basicity; Insoluble matter; Form; Trial conditions; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Polyamine Coagulant
Refinery & Petrochemical Wastewater: Composition; Active content & method; Viscosity test conditions; pH; Application trials; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Poly(diallyldimethylammonium Chloride)
Refinery & Petrochemical Wastewater: Nominal concentration & test basis; Viscosity & test conditions; Residual monomer; pH; End-use documents; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Polyacrylamide
Refinery & Petrochemical Wastewater: Ionic type & charge characteristics; Viscosity and test concentration/temperature; Residual monomer & test report; Dissolution conditions; Trial evaluation criteria; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Polyacrylamide Emulsion
Refinery & Petrochemical Wastewater: Ionic type; Active polymer; Emulsion system; Preparation conditions; Residual monomer; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Aluminium Chlorohydrate
Refinery & Petrochemical Wastewater: Al₂O₃ basis; Basicity; Impurities; Specific end use; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Sodium Aluminate
Refinery & Petrochemical Wastewater: Active components; Alkalinity; Form; Process compatibility; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Ferrous Chloride
Refinery & Petrochemical Wastewater: Ferrous iron content; Free acid; Impurities; Downstream solid–liquid separation; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Biobased Flocculant
Refinery & Petrochemical Wastewater: Raw material & composition; Suitable pH; Degradability data; Residual impurities; Trial performance; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.

Compare results using representative water samples or site data, retaining the test methods and operating conditions.

Color & difficult-organic treatmentColor removal & advanced oxidationFilter by this objective

Separate coagulation and adsorption routes from advanced oxidation. Confirm applicability, by-products and downstream compatibility by testing.

View each product's function and conditions
Decolorizing Coagulant
Function:Destabilizes and separates coagulation-treatable dyes, colloids or color components.
Conditions:Define the dye or color source, salinity, pH, COD fractions and coagulation trials. Decolorization does not automatically establish overall COD removal.
Polyaluminium Chloride
Function:Destabilizes and separates coagulation-treatable dyes, colloids or color components.
Conditions:Define the dye or color source, salinity, pH, COD fractions and coagulation trials. Decolorization does not automatically establish overall COD removal.
Ferric Chloride
Function:Destabilizes and separates coagulation-treatable dyes, colloids or color components.
Conditions:Define the dye or color source, salinity, pH, COD fractions and coagulation trials. Decolorization does not automatically establish overall COD removal.
Polyamine Coagulant
Function:Destabilizes and separates coagulation-treatable dyes, colloids or color components.
Conditions:Define the dye or color source, salinity, pH, COD fractions and coagulation trials. Decolorization does not automatically establish overall COD removal.
Powdered Activated Carbon
Function:Adsorbs certain color-, odor- or taste-causing substances or dissolved organic components, with downstream separation.
Conditions:Define the adsorption target, carbon grade, trials and spent-carbon/sludge disposal.
Hydrogen Peroxide
Function:Participates in an engineered oxidation/catalytic route confirmed by trials; it is not a general substitute for decolorizing coagulation.
Conditions:Define the contaminants, reaction system, by-products and downstream treatment. Assess the separate contributions of oxidation and coagulation.
Ferrous Sulfate
Function:Participates in an engineered oxidation/catalytic route confirmed by trials; it is not a general substitute for decolorizing coagulation.
Conditions:Define the contaminants, reaction system, by-products and downstream treatment. Assess the separate contributions of oxidation and coagulation.
Engineered Ozone Oxidation
Function:Participates in an engineered oxidation/catalytic route confirmed by trials; it is not a general substitute for decolorizing coagulation.
Conditions:Define the contaminants, reaction system, by-products and downstream treatment. Assess the separate contributions of oxidation and coagulation. Engineering items cover supporting requirements and chemical coordination only; they do not establish equipment manufacturing, installation or system approval.
Persulfate Oxidants
Function:Participates in an engineered oxidation/catalytic route confirmed by trials; it is not a general substitute for decolorizing coagulation.
Conditions:Define the contaminants, reaction system, by-products and downstream treatment. Assess the separate contributions of oxidation and coagulation.
View product-specific checks
Decolorizing Coagulant
Refinery & Petrochemical Wastewater: Actual dye or color source; Product composition; Other chemicals used; Trial results; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Polyaluminium Chloride
Refinery & Petrochemical Wastewater: Al₂O₃ content; Basicity; Insoluble matter; pH test conditions; Impurity limits for the intended use; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Ferric Chloride
Refinery & Petrochemical Wastewater: Effective iron content; Free acid; Impurities; Form & trial results; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Polyamine Coagulant
Refinery & Petrochemical Wastewater: Composition; Active content & method; Viscosity test conditions; pH; Application trials; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Powdered Activated Carbon
Refinery & Petrochemical Wastewater: Media composition; Particle size & grading; Treatment objective; Capacity or performance test conditions; End-use documents; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Hydrogen Peroxide
Refinery & Petrochemical Wastewater: Active content; Impurities; Actual target contaminants; Catalytic & downstream treatment conditions; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Ferrous Sulfate
Refinery & Petrochemical Wastewater: Ferrous & total iron; Hydration form; Oxidation state; Impurities; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Engineered Ozone Oxidation
Refinery & Petrochemical Wastewater: Target contaminants; Engineered equipment; Mass transfer; Residual & off-gas management; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Persulfate Oxidants
Refinery & Petrochemical Wastewater: Salt type & composition; Contaminants; Activation process; By-products & downstream treatment; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.

Compare results using representative water samples or site data, retaining the test methods and operating conditions.

Biological nutrients & process recoveryBiological treatment & nutrientsFilter by this objective

Identify limiting nutrients, toxic inputs and operating causes first. Add nutrient or recovery products only where the process assessment supports their use.

View each product's function and conditions
Biological-Treatment Nutrient Formulation
Function:Supplies nutrients where an actual nitrogen, phosphorus or micronutrient deficit exists in the influent; it is not a default addition for all wastewater.
Conditions:Have bioavailable carbon, nitrogen and phosphorus analysis and a nutrient-demand assessment available, avoiding added effluent nitrogen or phosphorus loads.
Bioaugmentation Formulations
Function:A supporting formulation route for specified biological treatment recovery or enhancement.
Conditions:Define microbial strains/composition, activity and limiting factors. This does not replace investigation of loading, dissolved oxygen, toxicity or nutrient causes.
Sodium Bicarbonate
Function:Adds alkalinity and buffering capacity to maintain biological reaction conditions where an alkalinity deficit has been confirmed.
Conditions:Confirm demand from alkalinity, nitrogen conversion or VFA trends. A single pH measurement does not replace system analysis.
Magnesium Hydroxide
Function:Adds alkalinity and buffering capacity to maintain biological reaction conditions where an alkalinity deficit has been confirmed.
Conditions:Confirm demand from alkalinity, nitrogen conversion or VFA trends. A single pH measurement does not replace system analysis.
View product-specific checks
Biological-Treatment Nutrient Formulation
Refinery & Petrochemical Wastewater: Influent nitrogen, phosphorus & carbon balance; Actual composition; Discharge targets; Trials & monitoring; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Bioaugmentation Formulations
Refinery & Petrochemical Wastewater: Specified microbial strains or composition; Actual limiting factors; Activity & validation method; Operating conditions; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Sodium Bicarbonate
Refinery & Petrochemical Wastewater: Actual composition & form; Content basis; Water quality; Equipment materials; End-use requirements; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Magnesium Hydroxide
Refinery & Petrochemical Wastewater: Active Mg(OH)₂ or MgO basis; Solids content; Particle size; Reactivity; Slurry stability; Impurities; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.

Compare results using representative water samples or site data, retaining the test methods and operating conditions.

Foam control & downstream compatibilityFoam control & process aidsFilter by this objective

Assess the foam source, temperature and biological, membrane or coating process. Selection must consider downstream effects as well as initial foam knockdown.

View each product's function and conditions
Silicone Defoamer
Function:Controls foam under the relevant operating conditions using silicone, polyether or non-silicone formulation properties.
Conditions:Compare defoaming trials, temperature and medium, and confirm downstream effects on biological treatment, membranes, coatings or product purity.
Polyether Defoamer
Function:Controls foam under the relevant operating conditions using silicone, polyether or non-silicone formulation properties.
Conditions:Compare defoaming trials, temperature and medium, and confirm downstream effects on biological treatment, membranes, coatings or product purity.
Non-Silicone Defoamer
Function:Controls foam under the relevant operating conditions using silicone, polyether or non-silicone formulation properties.
Conditions:Compare defoaming trials, temperature and medium, and confirm downstream effects on biological treatment, membranes, coatings or product purity.
View product-specific checks
Silicone Defoamer
Refinery & Petrochemical Wastewater: Formulation & active components; Temperature; Defoaming trials; Effects on membranes, coating & biological processes; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Polyether Defoamer
Refinery & Petrochemical Wastewater: Formulation & active components; Temperature; Defoaming trials; Effects on membranes, coating & biological processes; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Non-Silicone Defoamer
Refinery & Petrochemical Wastewater: Formulation & active components; Temperature; Defoaming trials; Effects on membranes, coating & biological processes; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.

Compare results using representative water samples or site data, retaining the test methods and operating conditions.

Need to compare these routes under your operating conditions?Share influent quality, treatment objectives and the existing process to discuss which products and conditions should be validated first.

Process & product matching

Select a treatment objective to explore suitable products.

Different treatment routes may apply. Open the matching notes for each product to review its role, conditions and purchasing criteria.

Distinguish programs by oil phase, salinity, temperature and downstream use. Assess demulsification, separation, scale control and microbial control separately.
Industrial Wastewater Demulsifier · Product form referenceSpecialty formulations
Demulsification & oil separation

Industrial Wastewater Demulsifier

A demulsifier formulation for emulsified oil systems, selected with oil–water separation, flotation or settling.

Why this matchesConditional option
Role
Adjusts interfacial and separation properties in emulsified-oil or paint systems. It is distinct from a general inorganic coagulant.
Conditions
Define the oil phase, emulsifier or coating system, then verify demulsification/detackification and separation with representative water samples.
Before purchase
Refinery & Petrochemical Wastewater: Oil phase composition; Source of emulsification; Temperature & pH; Trial results; Separation equipment; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Oil-Removal Coagulant · Product form referenceSpecialty formulations
Demulsification & oil separation

Oil-Removal Coagulant

An oily wastewater coagulant used with flotation or settling for oil and particle separation.

Why this matchesConditional option
Role
Adjusts interfacial and separation properties in emulsified-oil or paint systems. It is distinct from a general inorganic coagulant.
Conditions
Define the oil phase, emulsifier or coating system, then verify demulsification/detackification and separation with representative water samples.
Before purchase
Refinery & Petrochemical Wastewater: Oil phase & emulsion state; pH conditions; Chemical composition; Downstream separation method; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Polyamine Coagulant · Product form referenceSpecialty formulations
Coagulation & flocculation

Polyamine Coagulant

An organic coagulant option for colloid destabilization, clarification and separation in certain oily water systems.

Why this matchesConditional option
Role
Supports coagulation, flocculation and solid–liquid separation after demulsification or paint detackification.
Conditions
Run combined trials with the actual emulsified-oil/coating system, pH and flotation/settling equipment.
Before purchase
Refinery & Petrochemical Wastewater: Composition; Active content & method; Viscosity test conditions; pH; Application trials; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Poly(diallyldimethylammonium Chloride) · Product form referenceSpecialty formulations
Coagulation & flocculation

Poly(diallyldimethylammonium Chloride)

An organic coagulating polymer for raw water, industrial water and suitable solid–liquid separation procedures.

Why this matchesConditional option
Role
Supports coagulation, flocculation and solid–liquid separation after demulsification or paint detackification.
Conditions
Run combined trials with the actual emulsified-oil/coating system, pH and flotation/settling equipment.
Before purchase
Refinery & Petrochemical Wastewater: Nominal concentration & test basis; Viscosity & test conditions; Residual monomer; pH; End-use documents; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Polyaluminium Chloride · Product form referenceSpecialty formulations
Coagulation & flocculation

Polyaluminium Chloride

For raw water and wastewater coagulation, compare active components, basicity and water-sample trials against clarification and phosphorus-removal requirements.

Why this matchesConditional option
Role
Supports coagulation, flocculation and solid–liquid separation after demulsification or paint detackification.
Conditions
Run combined trials with the actual emulsified-oil/coating system, pH and flotation/settling equipment.
Before purchase
Refinery & Petrochemical Wastewater: Al₂O₃ content; Basicity; Insoluble matter; pH test conditions; Impurity limits for the intended use; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Polyacrylamide · Product form referenceSpecialty formulations
Coagulation & flocculation

Polyacrylamide

Select a suitable PAM for clarification, settling, thickening and sludge dewatering, matching flocculation behavior to the water, particles and equipment.

Why this matchesConditional option
Role
Supports coagulation, flocculation and solid–liquid separation after demulsification or paint detackification.
Conditions
Run combined trials with the actual emulsified-oil/coating system, pH and flotation/settling equipment.
Before purchase
Refinery & Petrochemical Wastewater: Ionic type & charge characteristics; Viscosity and test concentration/temperature; Residual monomer & test report; Dissolution conditions; Trial evaluation criteria; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Aluminium Sulfate · Product form referenceBase chemicals
Coagulation & flocculation

Aluminium Sulfate

An aluminium salt option for coagulation and chemical phosphorus removal in raw water and wastewater, supporting clarification and solid–liquid separation.

Why this matchesConditional option
Role
Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions
Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Before purchase
Refinery & Petrochemical Wastewater: Al₂O₃ content; Iron; Insoluble matter; pH conditions; Hydration state; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Ferric Chloride · Product form referenceBase chemicals
Coagulation & flocculation

Ferric Chloride

An iron salt raw material for coagulation and chemical phosphorus removal, supporting clarification and sludge–water separation.

Why this matchesConditional option
Role
Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions
Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Before purchase
Refinery & Petrochemical Wastewater: Effective iron content; Free acid; Impurities; Form & trial results; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Ferric Sulfate · Product form referenceBase chemicals
Coagulation & flocculation

Ferric Sulfate

An iron salt option for water and wastewater coagulation and phosphorus removal, followed by flocculation and separation.

Why this matchesConditional option
Role
Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions
Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Before purchase
Refinery & Petrochemical Wastewater: Iron content; Free acid; Insoluble matter; Impurity requirements for the intended use; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Polyferric Sulfate · Product form referenceSpecialty formulations
Coagulation & flocculation

Polyferric Sulfate

A polymeric iron coagulant option for clarification, phosphorus removal and sludge treatment support.

Why this matchesConditional option
Role
Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions
Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Before purchase
Refinery & Petrochemical Wastewater: Total iron; Basicity; Insoluble matter; Form; Trial conditions; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Polyacrylamide Emulsion · Product form referenceSpecialty formulations
Coagulation & flocculation

Polyacrylamide Emulsion

An emulsion flocculating polymer for solid–liquid separation in clarification, thickening and dewatering.

Why this matchesConditional option
Role
Polymer bridging and charge effects help build separable flocs. Flocculation does not remove dissolved salts or all COD.
Conditions
Define particle and sludge properties, and match preparation, shear and settling/flotation/dewatering trials to the selected grade.
Before purchase
Refinery & Petrochemical Wastewater: Ionic type; Active polymer; Emulsion system; Preparation conditions; Residual monomer; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Aluminium Chlorohydrate · Product form referenceSpecialty formulations
Coagulation & flocculation

Aluminium Chlorohydrate

An aluminium coagulant with a different composition from PAC, for raw water and wastewater clarification.

Why this matchesConditional option
Role
Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions
Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Before purchase
Refinery & Petrochemical Wastewater: Al₂O₃ basis; Basicity; Impurities; Specific end use; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Sodium Aluminate · Product form referenceBase chemicals
Coagulation & flocculation

Sodium Aluminate

An alkaline aluminium component for suitable coagulation, chemical phosphorus removal and precipitation softening.

Why this matchesConditional option
Role
Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions
Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Before purchase
Refinery & Petrochemical Wastewater: Active components; Alkalinity; Form; Process compatibility; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Ferrous Chloride · Product form referenceBase chemicals
Coagulation & flocculation

Ferrous Chloride

A ferrous salt option for specified reduction, sulfide-control and water treatment steps.

Why this matchesConditional option
Role
Inorganic salt coagulation creates separable particles and affects downstream sludge production and alkalinity demand.
Conditions
Compare pH, alkalinity, effective metal content and representative coagulation trials. Ferrous salts also require defined oxidation and downstream separation conditions.
Before purchase
Refinery & Petrochemical Wastewater: Ferrous iron content; Free acid; Impurities; Downstream solid–liquid separation; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Biobased Flocculant · Product form referenceSpecialty formulations
Coagulation & flocculation

Biobased Flocculant

A bio-based flocculant route for specific solid–liquid separation requirements validated in trials.

Why this matchesConditional option
Role
A supplementary coagulation route for specific raw material sources or water conditions.
Conditions
Have the material composition, end-use documents and comparison trials on the same water sample available.
Before purchase
Refinery & Petrochemical Wastewater: Raw material & composition; Suitable pH; Degradability data; Residual impurities; Trial performance; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Decolorizing Coagulant · Product form referenceSpecialty formulations
Coagulation & flocculation

Decolorizing Coagulant

A decolorizing coagulant option for certain dyes and colored industrial wastewater, used with flocculation and solid–liquid separation.

Why this matchesConditional option
Role
Destabilizes and separates coagulation-treatable dyes, colloids or color components.
Conditions
Define the dye or color source, salinity, pH, COD fractions and coagulation trials. Decolorization does not automatically establish overall COD removal.
Before purchase
Refinery & Petrochemical Wastewater: Actual dye or color source; Product composition; Other chemicals used; Trial results; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Powdered Activated Carbon · Product form referenceMedia & resins
Adsorption, ion exchange & filtration

Powdered Activated Carbon

Powdered adsorption material for certain organic compounds, color, odor and taste, followed by sludge–water separation.

Why this matchesConditional option
Role
Adsorbs certain color-, odor- or taste-causing substances or dissolved organic components, with downstream separation.
Conditions
Define the adsorption target, carbon grade, trials and spent-carbon/sludge disposal.
Before purchase
Refinery & Petrochemical Wastewater: Media composition; Particle size & grading; Treatment objective; Capacity or performance test conditions; End-use documents; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Hydrogen Peroxide · Product form referenceBase chemicals
Oxidation & advanced treatment

Hydrogen Peroxide

An oxidant option for specified oxidation, decolorization and engineered disinfection steps, matched to the contaminants and reaction route.

Why this matchesConditional option
Role
Participates in an engineered oxidation/catalytic route confirmed by trials; it is not a general substitute for decolorizing coagulation.
Conditions
Define the contaminants, reaction system, by-products and downstream treatment. Assess the separate contributions of oxidation and coagulation.
Before purchase
Refinery & Petrochemical Wastewater: Active content; Impurities; Actual target contaminants; Catalytic & downstream treatment conditions; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Ferrous Sulfate · Product form referenceBase chemicals
Coagulation & flocculation

Ferrous Sulfate

A ferrous salt raw material for specified coagulation, reduction and phosphorus-control procedures.

Why this matchesConditional option
Role
Participates in an engineered oxidation/catalytic route confirmed by trials; it is not a general substitute for decolorizing coagulation.
Conditions
Define the contaminants, reaction system, by-products and downstream treatment. Assess the separate contributions of oxidation and coagulation.
Before purchase
Refinery & Petrochemical Wastewater: Ferrous & total iron; Hydration form; Oxidation state; Impurities; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Engineered Ozone Oxidation · Product form referenceEngineering coordination
Oxidation & advanced treatment

Engineered Ozone Oxidation

Define treatment objectives, water quality and supporting chemical requirements for an existing or proposed ozone treatment step.

Why this matchesConditional option
Role
Participates in an engineered oxidation/catalytic route confirmed by trials; it is not a general substitute for decolorizing coagulation.
Conditions
Define the contaminants, reaction system, by-products and downstream treatment. Assess the separate contributions of oxidation and coagulation. Engineering items cover supporting requirements and chemical coordination only; they do not establish equipment manufacturing, installation or system approval.
Before purchase
Refinery & Petrochemical Wastewater: Target contaminants; Engineered equipment; Mass transfer; Residual & off-gas management; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Persulfate Oxidants · Product form referenceBase chemicals
Oxidation & advanced treatment

Persulfate Oxidants

A persulfate oxidation raw material for advanced treatment and remediation procedures designed through trials.

Why this matchesConditional option
Role
Participates in an engineered oxidation/catalytic route confirmed by trials; it is not a general substitute for decolorizing coagulation.
Conditions
Define the contaminants, reaction system, by-products and downstream treatment. Assess the separate contributions of oxidation and coagulation.
Before purchase
Refinery & Petrochemical Wastewater: Salt type & composition; Contaminants; Activation process; By-products & downstream treatment; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Biological-Treatment Nutrient Formulation · Product form referenceSpecialty formulations
Biological nutrients & carbon sources

Biological-Treatment Nutrient Formulation

Nitrogen, phosphorus or other nutrient formulations for industrial biological treatment with an identified nutrient deficit.

Why this matchesConditional option
Role
Supplies nutrients where an actual nitrogen, phosphorus or micronutrient deficit exists in the influent; it is not a default addition for all wastewater.
Conditions
Have bioavailable carbon, nitrogen and phosphorus analysis and a nutrient-demand assessment available, avoiding added effluent nitrogen or phosphorus loads.
Before purchase
Refinery & Petrochemical Wastewater: Influent nitrogen, phosphorus & carbon balance; Actual composition; Discharge targets; Trials & monitoring; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Bioaugmentation Formulations · Product form referenceSpecialty formulations
Biological nutrients & carbon sources

Bioaugmentation Formulations

Supporting formulations for specified biological treatment recovery and enhancement tasks.

Why this matchesConditional option
Role
A supporting formulation route for specified biological treatment recovery or enhancement.
Conditions
Define microbial strains/composition, activity and limiting factors. This does not replace investigation of loading, dissolved oxygen, toxicity or nutrient causes.
Before purchase
Refinery & Petrochemical Wastewater: Specified microbial strains or composition; Actual limiting factors; Activity & validation method; Operating conditions; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Sodium Bicarbonate · Product form referenceBase chemicals
pH, alkalinity & remineralization

Sodium Bicarbonate

An alkalinity and buffering raw material for biological treatment systems and suitable water-balance requirements.

Why this matchesConditional option
Role
Adds alkalinity and buffering capacity to maintain biological reaction conditions where an alkalinity deficit has been confirmed.
Conditions
Confirm demand from alkalinity, nitrogen conversion or VFA trends. A single pH measurement does not replace system analysis.
Before purchase
Refinery & Petrochemical Wastewater: Actual composition & form; Content basis; Water quality; Equipment materials; End-use requirements; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Magnesium Hydroxide · Product form referenceBase chemicals
pH, alkalinity & remineralization

Magnesium Hydroxide

A magnesium alkali source available as powder or slurry for suitable neutralization, alkalinity and precipitation requirements.

Why this matchesConditional option
Role
Adds alkalinity and buffering capacity to maintain biological reaction conditions where an alkalinity deficit has been confirmed.
Conditions
Confirm demand from alkalinity, nitrogen conversion or VFA trends. A single pH measurement does not replace system analysis.
Before purchase
Refinery & Petrochemical Wastewater: Active Mg(OH)₂ or MgO basis; Solids content; Particle size; Reactivity; Slurry stability; Impurities; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Silicone Defoamer · Product form referenceSpecialty formulations
Foam control & process aids

Silicone Defoamer

A silicone-based defoaming formulation for suitable industrial water and wastewater foam-control steps.

Why this matchesConditional option
Role
Controls foam under the relevant operating conditions using silicone, polyether or non-silicone formulation properties.
Conditions
Compare defoaming trials, temperature and medium, and confirm downstream effects on biological treatment, membranes, coatings or product purity.
Before purchase
Refinery & Petrochemical Wastewater: Formulation & active components; Temperature; Defoaming trials; Effects on membranes, coating & biological processes; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Polyether Defoamer · Product form referenceSpecialty formulations
Foam control & process aids

Polyether Defoamer

A polyether defoaming formulation selected against the medium and operating temperature for industrial water treatment.

Why this matchesConditional option
Role
Controls foam under the relevant operating conditions using silicone, polyether or non-silicone formulation properties.
Conditions
Compare defoaming trials, temperature and medium, and confirm downstream effects on biological treatment, membranes, coatings or product purity.
Before purchase
Refinery & Petrochemical Wastewater: Formulation & active components; Temperature; Defoaming trials; Effects on membranes, coating & biological processes; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Non-Silicone Defoamer · Product form referenceSpecialty formulations
Foam control & process aids

Non-Silicone Defoamer

A non-silicone defoaming formulation for water systems with specific requirements concerning silicone components.

Why this matchesConditional option
Role
Controls foam under the relevant operating conditions using silicone, polyether or non-silicone formulation properties.
Conditions
Compare defoaming trials, temperature and medium, and confirm downstream effects on biological treatment, membranes, coatings or product purity.
Before purchase
Refinery & Petrochemical Wastewater: Formulation & active components; Temperature; Defoaming trials; Effects on membranes, coating & biological processes; Consider segregated wastewater streams, oil content, COD and inhibitors, process, sludge conditions and reuse targets.
Confirmed available
Technical references & scope

Industry references describe general uses. Product specifications, certifications and application results require the corresponding supplier documentation.

PURCHASING QUESTIONS

More questions, answered.

How should I select water-treatment products for Refinery & Petrochemical Wastewater?

Identify and segregate oil, dissolved organics and biological inhibitors. One coagulant cannot address all these duties.

What information helps select products for this application?

Stream segregation, oil/emulsions, COD/toxicity, biological process, sludge and reuse requirements.

How are the suitable product and grade confirmed?

Distinguish programs by oil phase, salinity, temperature and downstream use. Assess demulsification, separation, scale control and microbial control separately. No universal dose or treatment result is implied. Product options may serve primary, supporting, conditional or alternative roles.

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