RoCide®DB20 is a fast acting, non-oxidizing biocide based on a 20% solution of the active ingredient DBNPA (Dibromo nitrilo propionamide). This formulation has almost instantaneous antimicrobial activity combined with rapid chemical breakdown resulting in one of the most cost-effective methods of contamination elimination.
RoCide® DB20 is certified by the EPA for use in reverse osmosis systems and has outstanding environmental properties as it degrades rapidly and naturally. This property has made it the chemical of choice, especially for systems operating under strict environmental and discharge regulations. This product is not recommended for use in systems producing potable water.
This procedure allows biocide use only as needed to control fouling. The dose level and frequency should be optimised to match the bacteriological challenge of the feed water. An initial dose of 50mg/l for one hour per week is a typical start point for optimisation.
RoCide® DB20 is normally applied as the first stage of cleaning using solutions of 50-200 mg/l depending on the degree of fouling. The solution is circulated through the membranes for 1-3hours. As RoCide® DB20 is a fast acting biocide the biocide is best added in batches of 50mg/l four times during the circulation period.
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08/09
