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Reverse Osmosis Chemicals

Reverse Osmosis Chemicals
Water Technologies & Solutions

Reverse osmosis is an efficient way of purifying water but operational efficiency can only be obtained if the plant and in particular the membranes are kept clean. If this is not the case, membranes quickly become fouled, result in lower output and ultimately result in the costly necessity of having to replace them.

Various products are available which have been developed to combat the problems likely to be found in membrane and reverse osmosis markets. Fouling is reduced in the first instance with the correct use of reverse osmosis anti-foulants and anti-scalants. Membrane cleaning products help to remove fouling from the membranes and should be chosen based on the type of fouling that occurs. Biofilms can form on membranes and biocidal products should also be considered as part of the membrane treatment regime.

RO anti-Scalants

 
 
Product code Application Composition Benefit
ZI211
Highly effective RO membrane anti-scalant
An aqueous solution of neutralised phosphonate.
Effective against all common scales. Inhibits iron fouling. Compatible with all membrane types.
ZI906
Highly effective RO membrane antiscalant.
Aqueous solution of phosphonate and polymers at alkaline pH
Very cost effective. Prevents scaling from calcium carbonate; calcium fluoride; calcium phosphate and sulphate, Barium and Strontium sulphate. Inhibits iron fouling Disperses silt
ZI731
An effective anti-scalant and antifoulant which is specifically formulated to combat silica scale.in Ro plants and cooling towers
An aqueous solution of polymer dispersants.
An effective anti-scalant and antifoulant which is specifically formulated to combat silica scale.
ZI864
Cost effective RO anti-scalant particularly effective against calcium carbonate scale
An aqueous solution of neutralised phosphonate.
Highly effective against calcium carbonate scale (up to 250ppm as CaCO3). Inhibits iron fouling. Compatible with all membrane types.
ZI862
Effective RO antiscalant. Very concentrated formulation.
An aqueous solution of polymers.
Highly effective at preventing the formation of inorganic scale, thereby reducing the frequency of membrane cleaning and replacement. Allows systems to be designed and operated at their optimum rate of recovery

RO membrane cleaning chemicals

Product code Application Composition Benefit
ZI714
Alkaline RO membrane cleaner
Liquid formulation containing high levels of chelant
Helps to remove organic and inorganic deposits. Effective in the removal of iron deposits.
ZI1510
Alkaline RO membrane cleanerDo not use on cellulose acetate membrane.
Liquid blend of solubilizing and complexing agents
Effective against oil and many other organic and biological compounds. Rapidly removes particulate foulants. Low foaming.
ZI718
Neutral RO membrane cleaner
Liquid formulation containing surfactants
Effective in the removal of organic matter. High strength product
ZI713
Mildly acidic RO membrane cleaner. Can be used with both polyamide and cellulose acetate membranes.
An aqueous solution of ammoniated citric acid.
Removes inorganic scale and iron deposits. Suitable for reverse osmosis and nanofiltration membranes.
ZI732
Acidic powder formulation for RO membrane cleaning.
Citric acid and surfactant.
Suitable for drinking water applications. Suitable for membranes from all major suppliers. Removes inorganic scales
ZI932
Alkaline powder RO cleaner
A blend of inorganic phosphates, EDTA and sodium percarbonate
Highly effective blend of cleaning agents, water conditioners and builders. This product emulsifies, saponifies, and disperses soils for easy removal

RO biocides and membrane preservation

Product code Application Composition Benefit
ZI729
No oxidising biocide for use in RO systems
DBNPA
Can be used both on-line (non-potable systems only) and off-line to eliminate and control microbiological fouling. Fast acting biocide.
ZI728
No oxidising biocide for use in RO systems
Isothiazolinone
Can be used both on-line (non-potable systems only) and off-line to eliminate and control microbiological fouling. Can be used as a cleaner or preservative (24 hours to 6 months)
ZI735
Is used to remove chlorine from feedwater in order to protect chlorine sensitive membranes
A concentrated solution of sodium metabisulphite.
Used to neutralise chlorine or to protect RO membranes during storage.

Above is just a selection of our core RO anti-scalants, RO membrane cleaners and biocides. Details on further products can be obtained from our Technical Team.

Contact our technical team on +44 333 339 40 43.

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