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Effluent treatment

Query Raised By: Satya Prakash, Advisor, Freelancer

How to reduce COD of PTA effluent

(1)  Comments

  • A.K. Chakraborty, CGM (HSE),IOCL-RHQ(Expert)   -   09-Apr,2019 16:01

    COD in PTA effluent can be reduced with the help of controlled chemical dosing of chemicals (DOPE, Acid, PAC, Alum, H2O2 etc ) and Nutrients (Urea and DAP) at various stages of effluent treatment. The biomass generated in the Activated Sludge Process can be customised in laboratory to suit to the pollutant level of COD in the influent. Also, in addition to surface aeration in Aeration Tank, diffused aeration with the help of submersible aerators can be used to reduce the COD in PTA effluent.