RO Biocide DBN 20

Application

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.

Specification

Appearance: Clear Liquid
Color: Light Yellow to amber liquid
pH: 2.0 - 5.0
Specific Gravity: 1.20 - 1.30
Odour: Slight
Boiling Point: 70 °C
Flash Point: 182 °C

Features and Benefits

• Instantaneous antimicrobial activity as a non-oxidizing slimicide and bactericide.
• Kills bacteria, fungi and algae.
• Degrades rapidly and naturally to comply with strict environmental discharge regulations.
• Compatible with polyamide and cellulose acetate membranes.
• Can be used with other RXSOL cleaners.
• Highly effective biocide and dispersant for use in open re-circulating cooling systems and closed circuit systems.
• Can be used as a secondary biocide in systems being treated with halogen.
• Effective against Legionella bacteria.
• Low foaming.

How RO Biocide DBN 20 Is Useful in RO Plants

1. Controls Bacterial & Algal Growth
DBN 20 targets bacteria, algae, and fungi that can form biofilms on RO membranes and pre-treatment filters.
Prevents slimy biological fouling, which reduces membrane efficiency and water flow.

2. Maintains High Membrane Performance
By eliminating biofilms, DBN 20 ensures maximum flux and minimal pressure drop, keeping the RO system running at optimum capacity.

3. Reduces Cleaning Frequency (CIP)
Less biofouling means membranes don’t require frequent chemical cleaning, reducing downtime and operational costs.

4. Safe for RO Membranes (Non-Oxidizing)
DBN 20 is typically a non-oxidizing biocide, making it safe for use with polyamide membranes when dosed correctly.
Does not cause oxidation damage like chlorine or hydrogen peroxide.

5. Effective in Pre-Treatment Systems
It can be dosed in pre-treatment stages to disinfect feed water, reducing microbial load before it reaches the membranes.

6. Compatible with Antiscalants & Pretreatment Chemicals
Formulated to be chemically compatible with commonly used RO antiscalants and pH adjusters, ensuring smooth system performance.