Puducherry industrial ETPs and groundwater: a guide
How pharma, textile, food and engineering units in Puducherry's industrial estates treat effluent and groundwater, close to Chennai stock.
Groundwater first
Puducherry relies largely on groundwater, which can carry iron, hardness and turbidity. Units that treat it for process use often aerate it to oxidise iron, then coagulate and add a small dose of anionic polymer before filtration.
Pharma and chemical units
Units in the Mettupalayam and Thirubuvanai estates run primary clarification ahead of biological treatment. A cationic grade such as Cationic HQ keeps solids out of the aeration stage.
Textile units
Coloured effluent needs SunDec SC05 to remove dissolved dye, followed by a cationic Sunfloc grade for the floc.
Food and engineering units
Food plants suit cationic grades or the liquid SunMac SC04. Engineering units with metal-finishing lines suit anionic grades after coagulation.
Regulation
Units in the union territory are regulated by the Puducherry Pollution Control Committee. Keep polymer documents and dose records ready for inspection.
Supply
Puducherry is about 150 km from Chennai along the East Coast Road, so small top-up orders are practical and polymer can be kept fresh.
A short supply line, and what it allows
Puducherry is about 150 km from our Chennai stock, so delivery is often the same or next day. That changes how you buy: instead of holding months of polymer, hold a few weeks and reorder in small lots, so the product in the store is always fresh.
The same short line helps with trials. A one-litre effluent sample can be tested and the result back to you quickly, with a recommended grade and a starting dose.
For the estates, keep one jar-test sheet per stream and re-run it when the product mix changes. Pharma and chemical estates, textile and food units each want a different grade, so treat them separately.
Not sure which grade suits your water?
Send us a one-litre sample or describe your process. We test it in our lab free of charge and recommend a grade and starting dose, and quote within 1 business hour.