Research Article Open Access

REMOVAL OF NATURAL TANNIN FROM TANNERY WASTEWATER USING SEQUENCING BATCH REACTOR

Abstract

The present study was concerned with the biological treatment of tannery wastewater. The treatment of tannin laden wastewater in Activated Sludge Process of low residence time (36 hours) does not yield the desired results. Hence mere has been a search for the development of methodology for the elimination of tannin under elongated periods of aeration. Sequencing Batch Reactors (SBR) is a unique method of biological treatment plant, which is essentially a modified form of activated sludge process, Jn the present investigation, a Sequencing Batch Reactor (SBR) of 5 litre capacity was fabricated and used The reactor treated high strength wastewater and the cumulative COD and Tannin removal efficiency was 77 % and 88 % respectively. The removal efficiency of tannin and COD in wastewater were controlled by tannin concentration, hydraulic residence times, micro and macronutrients. The degradation of tannin was confirmed through the enzyme assay test.

KANCHANABHAN, T.E., ARUTCHELVAN, V., Sekaran, g. and abbas mohaideen

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