Reverse Osmosis Chemicals
As well as a service company Feedwater is a manufacturer and supplier of a range of cost effective Reverse Osmosis antiscalants, scale inhibitors, antifoulants, RO membrane cleaners and biocides.
With effective pre-treatment, maintenance and appropriate RO chemicals, membranes can give several years of useful life before they need to be replaced. However, if any of these essential elements fail rapid fouling can result and early membrane replacement may be required, often at massive cost. To help you keep your RO plant running efficiently we have developed a range of reverse osmosis antifoulants and antiscalant chemicals to slow the process of fouling, and special membrane cleaners and biocides to restore performance when needed.
Chemicals with Service
Any Reverse Osmosis chemical is only as good as the service that accompanies it and we’ve 35 years of experience behind us. So contact us today for all your technical service requirements.
Own Label RO Chemicals
We can supply you with our Reverse Osmosis chemicals with your own label on the drum. So if you are a water treatment service company, a specialist RO plant manufacturer or an FM company looking to increase your added value, why not contact us because we can help you.
Export Distributors Wanted
We are always looking for professional overseas partners and distributors, so if you are a water treatment specialist looking for an alternative supplier for your water treatment products, or you believe you have the capability to establish a high quality water treatment service operation in your own territory then please contact us.
Reverse Osmosis Scale Inhibitors and RO Antiscalants
Scale is caused in RO membranes because the level of hardness salts in the water becomes increasingly concentrated as it passes through the reverse osmosis unit. Scaling invariably forms at the back-end of the system first since that is where the reject water is at its most concentrated. In smaller units scale formation can be prevented by base exchange softening the make-up water but for larger systems that is prohibitively expensive. Acid dosing can be successfully used but that introduces hazardous chemicals and may require very large volumes of acid.
Links to related pages
To overcome these problems we have developed a range of easy to handle, cost effective RO scale inhibitors and Reverse Osmosis antiscalants which increase the solubility of the hardness salts so they remain in solution rather than forming scale on the membrane.
Polyshield 400 is one of our remarkably cost effective RO antiscalant and Reverse Osmosis scale inhibitor which will inhibit a wide range of foulants including: calcium carbonate, calcium sulphate, barium sulphate, strontium sulphate, calcium fluoride, silica and iron.
Polyshield 300 is a polymeric RO scale inhibitor Reverse Osmosis antiscalant which is used where both calcium phosphate and calcium carbonate scale is a problem.
RO Membrane Cleaners & Reverse Osmosis Biocides
Regular chemical cleaning of RO membranes will ensure that they continue to perform and extend their useful life. The key thing with cleaning is to do it before the situation gets too bad because if you leave it too long the membrane may become irretrievably fouled. Cleaning should be undertaken whenever the normalised permeate flux reduces by 10 – 15% or, either the normalised differential pressure or permeate conductivity increase by 10-15%. In many instances it is best to adopt a programme of regular preventive cleaning.
Depending on the characteristics of the water supply membrane fouling may be inorganic, organic, colloidal or microbiological in nature and often a combination. Each type of fouling requires a different cleaning strategy.
RO-Clean A is an alkaline reverse osmosis membrane cleaner for removing fouling caused by organic, biological and colloidal foulants from RO and UF membranes.
RO-Clean C is a mildly-acidic RO membrane cleaner for removing fouling caused by iron salts, oxides and hydroxides. It can also be used to remove light calcium carbonate scaling.
RO-Clean E is a non-acidic chelant based reverse osmosis membrane cleaner for removing fouling caused by calcium, barium and strontium salts and iron oxides and hydroxides. It is particularly suitable for removing acid insoluble salts such as sulphates and fluorides. It can also be used effectively in combination with alkaline cleaners and a reverse osmosis biocide to remove organic fouling and biofouling.
Biocide RO is a broad spectrum RO biocide based on DBNPA. It is particularly rapid in its action and has an excellent environmental profile because it degrades quickly and naturally. It can be used as both an off-line and on-line cleaner to remove microbial fouling.
Biocide ITA is a cost effective RO biocide that can be used as an RO cleaner to remove biofouling or as a preservative to prevent microbial fouling developing when a reverse osmosis system is left off-line for an extended period.
Dechlorinating Chemicals, Flocculants and Coagulants
RO-DECL is a high strength bi-sulphite solution for removing chlorine from the make-up upstream of a reverse osmosis or UF system to prevent chlorine attack of the membrane.
Corroban 25 is an easy to handle sulphite dechlorinating solution.Enviromate coagulants and flocculants are matched to the raw water characteristics to aid solids separation and filtration in order to reduce the SDI and minimise the risk of fouling.
Here to Help you
Contact us today for all your Reverse Osmosis and RO chemicals requirements