Kochi seafood and refinery effluent: a guide
How Kochi seafood processors, refinery and chemical units and water works deal with fat-rich, oily and monsoon-driven water treatment challenges.
Seafood processing
Shrimp and fish processing for export uses a lot of water for washing, peeling and cleaning. The effluent is rich in protein, fat and blood, and turns odorous quickly. Many plants use dissolved air flotation (DAF) to lift fats and solids before biological treatment.
Making DAF work
A coagulant followed by a cationic polymer such as Cationic HQ gathers fat and protein into flocs that attach to air bubbles and float. SunMac SC04 is a liquid option that many DAF operators find easy to dose.
Refinery and chemical units
Oily wastewater from refining and the Eloor–Edayar chemical belt goes through oil separators and flotation before biological treatment. Cationic grades help break and separate fine oil droplets and suspended solids.
Monsoon raw water
Kochi receives very heavy south-west monsoon rain. Raw water turbidity from the Periyar can rise many times in a day. Water works and industrial raw-water plants should jar-test daily in the monsoon and adjust the anionic dose, such as Anionic HQ, as turbidity changes.
Regulation
Units are regulated by the Kerala State Pollution Control Board. Keep documents for each polymer on file for inspections and export-customer audits.
Supply
Road freight from Chennai to Kochi usually takes about two days. Plan larger orders before the monsoon, when road delays are more likely.
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