A STUDY OF THE PERFORMANCE OF A SEQUENTIAL BIOREACTOR PLANT FOR THE TREATMENT OF DAIRY EFFLUENTS

A. EL GHAMMAT, K. TEMSAMANI RIFFI, M. HASSANI ZERROUK

Abstract


The purpose of this work is to study the performance of the Sewage treatment plant with sequential biological reactor SBR for the treatment of dairy effluents of the cooperative that produce Milk and its derivatives. The SBR reactor was operating in 24 h time cycle in the following sequential operation phases: Aeration and stirring phase, settling phase and drainage phase include; treated water and excess sludge. The plant was managed by different operative strategies in order to find out the optimal conditions in terms of BOD5, COD, TSS, Nt and Pt removal. Analysis of the results shows that the monthly average abatement rates are around 80% for COD, 76% for TSS, 71% for total nitrogen and 63% for BOD5 discharge parameters are acceptable except for BOD5 which must be adjusted to ensure compliance with Moroccan standards of indirect discharges or even in-situ reuse in the production process: cooling, washing and watering.

Keywords


Wastewater, Dairy effluents, sequential batch reactor, M’diq, Morocco.

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