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Membrane Chemicals

Membranes Chemicals

We provide membrane antiscalants, antifoulants, and cleaning chemicals for reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF), and microfiltration (MF) membrane systems.


Effective in preventing carbonate, phosphate and sulfate based scales.

Effective stabilization of Iron, manganese and other metal ions.

Prevent the problems of silica polymerization.

Provide the dispersion of metal oxides, colloidal silicate and aluminium silicate.

Help modification of crystal structure of precipitants.

Reduce or entirely eliminate acid consumption.

Allow higher RO system recovery rates.

Reduce cleaning frequency

Increase the productive life of RO elements.

Extend system run times.

Reduce cleaning frequency and

Compatible with all membrane types.

Safe use with membranes in potable water systems.


Your membranes will operate at higher recoveries and high performance even at low dosages.


All pressure driven membrane separation systems foul over time. The symptoms of fouling include a decrease in normalized permeate flow, an increase in salt passage, and an increase in differential pressure. In addition to decreased system performance, severe fouling may irreversibly damage membrane elements and make effective cleanings difficult or impossible.


Foulants are divided into five different classes of material:

1 – Metals: iron, manganese, and aluminum. Less frequently, metals such as zinc, copper, and nickel are encountered.

2- Scale: The most common scale formers are calcium carbonate and the sulfates of calcium, barium, and strontium. Less common scales are silica and calcium fluoride. Silica scale, when it does occur, is very troublesome, as it is difficult to remove safely from membrane elements.

3- Colloids and Silt: the most common foulants and examples include clays, colloidal silica, and bacteria.

4- Organics: Humic and fulvic acids result from the degradation of leaves and other vegetation and occur frequently in surface waters.

5- Chemical foulants: results from feeding two or more incompatible chemicals ahead of membrane separation systems. The most common example is the precipitation of polymeric antiscalants by organic coagulants.


Our Cleaners are powerful against organic and inorganic foulants and:

Efficient removal of carbonate, phosphate and sulphate scales.

Removal of polymerized silica and silica polyvalent metal co-precipitants

Dissolution of iron and manganese oxide, manganese hydroxide and sulfide deposits.

Penetration and dispersion of biological slime.

Removal of heavy organic foulants, cationic polymers and hydrocarbons.

Dispersion of silt and clay deposits.

Removing stubborn foulants from membrane surfaces.

Compatible with all membrane types.

Safe use with membranes in potable water systems.


The main disadvantage of polyamide membranes is their intolerance to chlorine and other oxidants. Without some form of disinfection, microorganisms may quickly colonize and biofoul membrane surfaces and plug element feed passages.

The choice of which biocide to use depends upon customer requirements and the type and number of bacteria present in the RO system.
Our Biocides are membrane compatible to reduce biological fouling in membrane systems. They are broad spectrum formulations that combat contaminants such as bacteria, fungi and algae.

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