8 min read · 2026-03-05
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.
Buying 'polyelectrolyte' without charge type is how plants end up with drums of polymer that do nothing in the belt press. Anionic flocculants suit inorganic-rich sludges and many mineral processing streams; cationic types dominate biological sludge dewatering. Here is a practical buyer guide.
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Documented grades from our Vadodara warehouse — batch COA & MSDS, GST invoice. Share quantity on WhatsApp for a quote (we do not publish list prices).
Charge Type and Sludge Source
Biological sludge from activated sludge plants is typically negative in surface charge — cationic polyelectrolyte bridges particles for belt press and centrifuge. Primary chemical sludge high in metal hydroxides often responds to anionic polymer. Mixed ETP sludge may need jar-test on fresh samples — not last year's product code.
Make-Down and Dosing
Emulsion polymers must be diluted and aged correctly; dry powder needs proper wetting to avoid fisheyes. Under-mixed polymer wastes money; over-dosing can release water back from cake. Specify emulsion vs powder, molecular weight range and recommended make-down equipment with your RFQ.
Drashti supplies cationic DWP-grade and anionic de-oiling polyelectrolytes with application notes for Gujarat ETPs and paper mills.
Procurement Tips
Trial one drum on live sludge before annual contract. Compare cost per dry tonne of cake produced, not cost per kg polymer. Store away from heat and frost; check shelf life on COA.
Bulk quote on request for both anionic and cationic grades from Vadodara with pan-India delivery.
Related chemicals from Drashti Chemicals
- Cationic Polyelectrolyte — Biological sludge dewatering
- Anionic Polyelectrolyte — Oily and inorganic sludge
Frequently Asked Questions
Can I use cationic polyelectrolyte for all ETP sludge?
Not always. Primary chemical sludge and certain oily streams often need anionic or blended programs. Jar-test before bulk purchase.
What molecular weight should I specify?
Depends on dewatering equipment and sludge type. Share belt press or centrifuge details with your supplier for a recommended grade.
Related Pages
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