Why It Matters
Biofilm grows on polyamide RO membranes, raising differential pressure and cutting flux. Because polyamide is chlorine-sensitive, control requires non-oxidizing, membrane-safe biocides
Solution Approach
Biofilm grows on polyamide RO membranes, raising differential pressure and cutting flux. Because polyamide is chlorine-sensitive, control requires non-oxidizing, membrane-safe biocides RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.
Typical Treatment Workflow
1
System Assessment
Characterize operating conditions—fluid composition, temperature, pressure, flow rates—and benchmark current treatment performance.
2
Chemistry Selection
Match base chemicals to your operating envelope. Factor in compatibility with existing programs, regulatory constraints, and downstream impacts.
3
Dosage & Delivery
Determine optimal treat rates through jar testing or field trials. Configure packaging (drums, totes, ISO tanks) to match consumption and storage logistics.
4
Monitoring & Adjustment
Track KPIs—coupon rates, residuals, separator performance, water quality. Adjust chemistry and dosage as conditions change.
Recommended Chemistries (2)
DBNPA (2,2-Dibromo-3-Nitrilopropionamide)
CAS 10222-01-2
Specialty Additives
Fast-acting non-oxidizing biocide
2923 (2,2-DIBROMO-3-NITRILOPROPIONAMIDE) · Class The standard RO biocide: fast-kill, non-oxidizing and does not attack the polyamide layer; hydrolyzes to low residual, so it can be slug- or continuously dosed
Melting Point: 123 to 126 °C Boiling Point: Decomposes at 190 °C Solubility: In water, 1.5 g/100 mL (15,000 mg/L)
Full Details
Isothiazolinone(CMIT/MIT)
CAS 26172-55-4
Specialty Additives
Preservation
Non-oxidizing isothiazolinone used for membrane biofilm control and preservation/lay-up; membrane-safe alternative dosing chemistry to DBNPA
Melting Point: 54-55 °C Density: For a mixture of 5-chloro-2-methyl-3(2H)-isothi… Solubility: Solubility in g/100 mL solvent: water, infinite
Full Details