9 min read · 2026-06-02
By Rajesh Chauhan, Proprietor, Drashti Chemicals
Supplying industrial chemicals from Vadodara since 2015 — ETP coagulants, RO programs, and process chemicals with batch COA/MSDS.
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Expert supply · Est. 2015
Mr Rajesh Chauhan
Founder-led industrial chemical supply from Vadodara — ETP coagulant selection, RO programs, textile and pharma utility chemicals. Batch COA/MSDS on every dispatch. GSTIN 24AGLPC6288M1ZX.
What is Polyelectrolyte and How is it Used in Water Treatment? — written for ETP operators and sludge handling engineers. Drashti Chemicals supplies industrial chemicals from Vadodara, Gujarat with batch COA, MSDS and GST invoicing.
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This guide covers practical points for plant operators and procurement teams evaluating chemical supply in India.
Polyelectrolyte Chemistry and Types
Polyelectrolytes are long-chain synthetic polymers with ionic groups — classified as anionic, cationic and non-ionic based on charge type.
Anionic polyelectrolytes (polyacrylamide-based) are most common in ETP applications for flocculating negatively charged particles after coagulation.
Cationic polyelectrolytes are used for sludge dewatering, oily wastewater treatment and positive-charge flocculation in specific applications.
Molecular weight (MW) ranges from low (5–10 million) to very high (15–20 million) — higher MW produces larger flocs but requires more careful dosing.
Applications in ETP and Sludge Treatment
Dosed after coagulant (PAC/alum) in clarifiers to increase floc size and settling rate — typical dose 0.5–3 mg/L of 0.1% solution.
Used in centrifuges, belt presses and filter presses for sludge dewatering — cationic grades improve cake dryness and reduce polymer consumption.
DE OIL POLY type anionic flocculants specifically target oil and grease emulsions in refinery, textile and food processing effluent.
Drinking water plants use low-MW anionic polyelectrolytes as filter aids to improve sand and multimedia filter performance.
Dosing Best Practices and Supplier Selection
Always prepare 0.1–0.5% stock solution with soft water; hard water causes precipitation and reduces polymer effectiveness.
Age stock solution for 30–60 minutes before dosing to allow full polymer chain uncoiling — do not dose freshly mixed solution.
Over-dosing causes re-stabilisation of particles (floc reversal) — increase dose incrementally in jar tests to find optimal point.
Choose a polyelectrolyte supplier with multiple MW and charge density options, on-site jar testing support and bulk supply capability.
Supply from Drashti Chemicals, Vadodara
Drashti Chemicals stocks related industrial chemicals from Vadsar with batch COA, MSDS and GST invoicing (24AGLPC6288M1ZX). We are a supplier/stockist — share grade and quantity for a documented bulk quote. No public list prices.
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Our team helps with product selection, grade matching, dosing guidance and pan-India delivery. Export orders (UAE, Bangladesh, Egypt, Africa) handled with full documentation.
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