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Water Polishing Unit
UASB + Short Detention Final Polishing Unit (FPU)
Up-flow Anaerobic Sludge Blanket (UASB) process for treatment of municipal wastewater is simple and economical. It produces energy and also produces well-stabilized sludge, which has high NPK levels and therefore is suitable for applying on agricultural land. In the UASB 70 to 80% of BOD and TSS are removed. One/two day detention pond (Final polishing unit) further reduces the BOD and suspended solids, which then makes the effluent suitable for discharge. The overall efficiencies achieved with respect BOD and TSS removal are 85 to 90%.