Here’s a comprehensive overview of Genesys Flocculant products—ideal for reducing SDI (Silt Density Index) and protecting RO/NF systems:

  • Purpose: Membrane-compatible flocculant for surface, well, and process waters with medium to high SDI—improves pre-filtration performance.

  • Dosage: Typically 1–4 mg/L; continuous dosing with ~5 minute contact time before filters.

  • Compatibility: Cationic polymer—safe with polyamide membranes; won’t cause fouling like some metal-based flocculants.

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Genesys Flocculent

Brands: Genesys

Origin: UK

CleanTech Engineering Limited

Flocculants are used in combination with coagulants to agglomerate suspended particles for removal by filtration. This technique is used extensively in all types of surface waters to reduce the silt density index (SDI) and minimize membrane fouling. Although organic cationic flocculants are particularly effective, their widespread use in membrane applications is limited because of perceived problems with flocculent fouling at the membrane surface causing irreparable damage. Reference material from some of the major membrane manufacturers on the use of flocculants is given. Autopsies show that more than 50% of membrane fouling is caused by inadequate, deficient or poorly operated pre-treatment systems.

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MODEL & APPLICATION
Genefloc ABF Bio-fouled water source, algae/bio-stat
Genefloc GPF Membrane compatible flocculant
Genefloc PWFDrinking water approved

Genefloc ABF (Algaecide + Biocide + Flocculant)

  • Purpose: Combines flocculation with bio-control—targets colloids, algae, bacteria—ideal for open reservoirs, ponds, and biologically active feed water.

  • Dosage: 2–10 mg/L continuous dosing, mixed in turbulent zone before sand/multi-media filters.

  • Properties: Low molecular weight cationic polymer; pH ~4–5; specific gravity ~1.00–1.10; freezing point ~2 °C.

  • Material Compatibility: Mildly corrosive to carbon steel; use stainless steel, fiberglass, or PE/PP tanks. 

Selection Guide

Product Use Case Typical Dose
Genefloc GPF General SDI reduction before RO/NF 1–4 mg/L
Genefloc ABF Feed water with algae/bacteria concerns 2–10 mg/L
Genefloc PWF When potable water standards are essential Use per application

Practical Tips

  • Jar testing is highly recommended to determine optimal dose rates, especially with adding flocculant alongside coagulants.

  • Continuous injection into turbulent flow zones ensures even mixing and effective coagulation/flocculation.

  • Monitor SDI post-treatment to verify performance.

  • Materials: Store in stainless steel, PE, PP, or fiberglass tanks; avoid carbon steel for ABF due to mild corrosiveness .

  • Temperature Control: ABF can become viscous near freezing (~2 °C) .

Bottom Line

Genesys offers tailored solutions for improving feed water quality before RO/NF systems:

  • Use GPF for general SDI reduction,

  • ABF if bio-fouling is a concern,

  • PWF when treating potable-grade water.