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BOD, COD, TSS and TDS are not interchangeable wastewater parameters. Each indicates a different treatment challenge and can change ETP sizing, biological treatment, clarification, filtration, RO/ZLD requirements and State Pollution Control Board compliance. This guide explains what each parameter means and how industries should respond when ETP outlet results exceed consent limits.

Before buying an Effluent Treatment Plant, industries should review the vendor proposal carefully. This blog explains what to check in an ETP quotation — design basis, wastewater data, flow, BOD, COD, TSS, TDS, treatment stages, sludge handling, civil scope, automation, guarantees, O&M cost and exclusions — so costly mistakes can be avoided before issuing the purchase order.

Before designing or buying an Effluent Treatment Plant, industries must collect the right wastewater data. This blog explains the key ETP design inputs — flow, BOD, COD, TSS, TDS, pH, sludge, reuse target, ZLD requirement and source-wise effluent details — so the treatment system is sized correctly and avoids future compliance failures.