Studies regarding the performances of municipal wastewater treatment processes

Elisabeta Chirila1, Ionela Carazeanu Popovici1, Techin Ibadula2, Alice Iordache2

1 Ovidius University, Chemistry Department, 124 Mamaia Blvd, 900527 RO Constanta,
2 RAJA Constanta, 22-24 Calarasi Street, Constanta, Romania

Abstract


The paper presents new studies on the removal efficiencies related to the quality specific indicators of municipal wastewater treatment plant. Studies were performed on a modern wastewater treatment plant in Romania, located on the Black Sea coast, which processes about 3200 L s-1 of effluent from Constanta city, including sewage (60%) and industrial wastewater (food industry and processing, constructions, petroleum products distribution etc.).The dynamics of average removal efficiencies for total suspended solids (TSS), total extractable in ether petroleum (EP), CODCr and BOD5 in 2003 and 2005 are shown. Overall determined efficiencies were: TSS 50 - 86%, EP 37 - 79%, CODCr 53 87% and BOD5 53 - 89%. Improved performances in 2005 comparing with 2003 can be noticed.

Keywords


municipal wastewater; COD; BOD; TSS; EP; treatment removal efficiencies

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