Tall vertical membrane modules, headers and side-mounted tanks and pumps, 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.
Protect the intended membrane process by separating pretreatment, scale inhibition, cleaning and maintenance requirements.
Treatment approach
Ultrafiltration & Microfiltration Maintenance: understand the treatment stages first.
Check pretreatment, backwashing and maintenance cleaning against membrane material, module configuration and fouling type. Show vertical UF / MF modules distinctly from RO pressure vessels.
Check together during selection
Use the membrane model and manufacturer's procedures to distinguish pretreatment, online maintenance and offline cleaning, and assess residuals and compatibility.
Compare candidate products below by treatment objective. Evaluate different routes separately; the list does not imply simultaneous dosing.
Ultrafiltration & Microfiltration Maintenance: 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 membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents. This helps address pretreatment, membrane protection and maintenance requirements and narrow the product and specification range.
Then confirm assessment limits
Use the membrane model and manufacturer procedure to distinguish pretreatment, online maintenance and offline cleaning, and assess residuals and compatibility.
Compare all treatment routesProduct roles, conditions and verification
Ultrafiltration & Microfiltration Maintenance: treatment objectives and product routes
Treatment objective / stage
Product routes to compare
Function / applicable conditions
Checks before selection
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
Ultrafiltration & Microfiltration Maintenance: Al₂O₃ content; Basicity; Insoluble matter; pH test conditions; Impurity limits for the intended use; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Aluminium Sulfate
Ultrafiltration & Microfiltration Maintenance: Al₂O₃ content; Iron; Insoluble matter; pH conditions; Hydration state; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Ferric Chloride
Ultrafiltration & Microfiltration Maintenance: Effective iron content; Free acid; Impurities; Form & trial results; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Ferric Sulfate
Ultrafiltration & Microfiltration Maintenance: Iron content; Free acid; Insoluble matter; Impurity requirements for the intended use; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Polyferric Sulfate
Ultrafiltration & Microfiltration Maintenance: Total iron; Basicity; Insoluble matter; Form; Trial conditions; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Polyamine Coagulant
Ultrafiltration & Microfiltration Maintenance: Composition; Active content & method; Viscosity test conditions; pH; Application trials; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Poly(diallyldimethylammonium Chloride)
Ultrafiltration & Microfiltration Maintenance: Nominal concentration & test basis; Viscosity & test conditions; Residual monomer; pH; End-use documents; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Polyacrylamide
Ultrafiltration & Microfiltration Maintenance: Ionic type & charge characteristics; Viscosity and test concentration/temperature; Residual monomer & test report; Dissolution conditions; Trial evaluation criteria; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Polyacrylamide Emulsion
Ultrafiltration & Microfiltration Maintenance: Ionic type; Active polymer; Emulsion system; Preparation conditions; Residual monomer; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Aluminium Chlorohydrate
Ultrafiltration & Microfiltration Maintenance: Al₂O₃ basis; Basicity; Impurities; Specific end use; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Sodium Aluminate
Ultrafiltration & Microfiltration Maintenance: Active components; Alkalinity; Form; Process compatibility; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Ferrous Chloride
Ultrafiltration & Microfiltration Maintenance: Ferrous iron content; Free acid; Impurities; Downstream solid–liquid separation; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Biobased Flocculant
Ultrafiltration & Microfiltration Maintenance: Raw material & composition; Suitable pH; Degradability data; Residual impurities; Trial performance; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Compare results using representative water samples or site data, retaining the test methods and operating conditions.
Follow the module and membrane-material operating limits. Oxidant use permitted for a UF membrane must not be assumed acceptable for polyamide RO.
View each product's function and conditions
UF/MF Cleaning & Maintenance Treatment
Function:Finished cleaning, prefilming or membrane-maintenance formulations address defined deposits and material protection requirements. Conditions:Identify the deposit, membrane/metal materials and cleaning acceptance criteria. Compare the separate roles of acidic and alkaline cleaning products.
Sodium Hypochlorite
Function:An acidic or oxidizing raw material for a manufacturer-approved cleaning procedure, selected by deposit type. Conditions:The material/membrane model, active components, pH, temperature and online/offline procedure must comply with the equipment documents.
Citric Acid
Function:An acidic or oxidizing raw material for a manufacturer-approved cleaning procedure, selected by deposit type. Conditions:The material/membrane model, active components, pH, temperature and online/offline procedure must comply with the equipment documents.
View product-specific checks
UF/MF Cleaning & Maintenance Treatment
Ultrafiltration & Microfiltration Maintenance: Membrane material; Modules; Contaminants; Manufacturer maintenance procedure; Formulation & residual rinsing; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Sodium Hypochlorite
Ultrafiltration & Microfiltration Maintenance: Available chlorine as mass fraction or g/L; Concentration at delivery; Free alkali; Impurities; Storage and transport time & conditions; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
Citric Acid
Ultrafiltration & Microfiltration Maintenance: Anhydrous or hydrated state; Content; Impurities; Membrane & material compatibility conditions; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
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.
Use the membrane model and manufacturer procedure to distinguish pretreatment, online maintenance and offline cleaning, and assess residuals and compatibility.
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
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
Ultrafiltration & Microfiltration Maintenance: Al₂O₃ content; Basicity; Insoluble matter; pH test conditions; Impurity limits for the intended use; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
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
Ultrafiltration & Microfiltration Maintenance: Al₂O₃ content; Iron; Insoluble matter; pH conditions; Hydration state; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
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
Ultrafiltration & Microfiltration Maintenance: Effective iron content; Free acid; Impurities; Form & trial results; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
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
Ultrafiltration & Microfiltration Maintenance: Iron content; Free acid; Insoluble matter; Impurity requirements for the intended use; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
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
Ultrafiltration & Microfiltration Maintenance: Total iron; Basicity; Insoluble matter; Form; Trial conditions; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
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
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
Ultrafiltration & Microfiltration Maintenance: Ionic type & charge characteristics; Viscosity and test concentration/temperature; Residual monomer & test report; Dissolution conditions; Trial evaluation criteria; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
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
Ultrafiltration & Microfiltration Maintenance: Al₂O₃ basis; Basicity; Impurities; Specific end use; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
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
Ultrafiltration & Microfiltration Maintenance: Active components; Alkalinity; Form; Process compatibility; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
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
Ultrafiltration & Microfiltration Maintenance: Ferrous iron content; Free acid; Impurities; Downstream solid–liquid separation; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
A chlorine source for suitable disinfection steps in water supply, wastewater and industrial water, compatible with liquid dosing arrangements.
Why this matchesConditional option
Role
An acidic or oxidizing raw material for a manufacturer-approved cleaning procedure, selected by deposit type.
Conditions
The material/membrane model, active components, pH, temperature and online/offline procedure must comply with the equipment documents.
Before purchase
Ultrafiltration & Microfiltration Maintenance: Available chlorine as mass fraction or g/L; Concentration at delivery; Free alkali; Impurities; Storage and transport time & conditions; Consider membrane material, module manufacturer, flux and pressure differential, contaminants, and cleaning and maintenance documents.
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 Ultrafiltration & Microfiltration Maintenance?
Precoagulation and cleaning-chemical choices depend on the module and membrane material. UF procedures are not the same as RO procedures.
What information helps select products for this application?
Module and membrane material, feedwater, transmembrane pressure, foulant evidence and OEM cleaning limits.
How are the suitable product and grade confirmed?
Use the membrane model and manufacturer procedure to distinguish pretreatment, online maintenance and offline cleaning, and assess residuals and compatibility. No universal dose or treatment result is implied. Product options may serve primary, supporting, conditional or alternative roles.
ENVO CHEMICAL
Discuss your water treatment needs
Share your application, current product or purchasing requirements to discuss a suitable supply option.
Selection, purchasing & documentsShare what you know
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