Pollution Research Paper

Vol.31, Issue 04, 2012; Page No.(653-657)

STUDIES TO DETERMINE THE TREATABILITY OF DOMESTIC WASTEWATER BY USING SEQUENTIAL BATCH REACTOR (SBR) AND TO STANDARDISE THE REACTOR PARAMETERS

R. LOGANATHAN, K. RASAPPAN, M. ISAAC SOLOMON JEBAMANI AND M. JOHNSON NAVEEN KUMAR

Abstract

A lab- scale aerobic Sequencing Batch Reactor (SBR) was investigated to treat the domestic wastewater. The reactor was constructed from Plexi glass material and its volume was 22 litres. The reactor was supplied with oxygen by fine bubble air diffuser. The reactor was fed with the domestic wastewater collected from the sewer line for the Hostel of Coimbatore Institute of Technology. The study was conducted to determine the treatability of domestic wastewater by SBR and to evaluate (standardise) the kinetic parameters such as total cycle time, temperature and aeration rate for carbonaceous constituents removal efficiency. The results of the study indicated that the effective reduction of influent parameters were achieved within 6 hours of total cycle time, 330 C Temperature, 7.50 pH and at an aeration rate of 6 L/min. The removal efficiency of carbonaceous constituents (BOD, COD & TSS) was achieved more than 90%. Easy operation, low cost and minimal sludge bulking condition make the SBR system an interesting option for the biological treatment of domestic wastewater. SBR is a time based treatment technology as compared to the conventional area based activated sludge processes.

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