RO Biocide DBN 20  is used in RO applications as a biocide for intermittent use or as a membrane cleaner. For potable applications, refer to local regulations.

Compatibility with other water treatment chemicals and water conditions: RO Biocide DBN 20 is compatible with other treatment chemicals with the exception of mercaptobenzothiazole. It also is not compatible with ammonia or hydrogen sulfide-containing water. DBNPA maintains reliable control in systems running at acidic, neutral, or alkaline pH.

Biocide for Intermittent Use
Used as an on-line biocide for intermittent use, RO Biocid DBN 20  acts like a “shock treatment” to control fouling. The dose level and frequency should be optimized according to the bacteriological challenges present in the feedwater. A typical dose is 25-50 mg/l for one hour per week.
 

RO Membrane Cleaner
RO Biocide DBN 20   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 1-3 hours. Because RO Biocide DBN 20  is a fast-acting biocide, it should be added in batches of 50 mg/l four times during the circulation period.