Title: Treatment of tannery wastewater in a hybrid biological reactor

Authors: Debabrata Mazumder, Somnath Mukherjee, Pradip K. Ray

Addresses: Civil Engineering Department, Bengal Engineering and Science University, 711103 Howrah WB, India. ' Civil Engineering Department, Jadavpur University, 700 032 Kolkatta WB, India. ' Civil Engineering Department, Bengal Engineering and Science University, 711103 Howrah WB, India

Abstract: A shaft-type hybrid bioreactor treated composite wastewater of a chrome tannery manufacturing |wet-blue leather|. The sample was treated under suspended growth and then hybrid system with 20 g/L of 5 mm tyre tube beads in batch mode. The continuous study was made under suspended growth and hybrid system with 10-30 g/L of beads. The kinetic coefficients Ks, k, Y and k were 170.83 mg/L, 0.0397 h−1, 0.3629 and 0.0035 h−1 respectively. The maximum COD removal was 70.9% under a loading rate of 5.250 kg/day/m³. The overall removal rate ranged from 0.0824-0.1004/h for the hybrid system.

Keywords: activated sludge; hybrid reactors; shaft-type; tyre tube beads; chrome tannery; composite wastewater; wastewater treatment; bioreactors.

DOI: 10.1504/IJEP.2008.020781

International Journal of Environment and Pollution, 2008 Vol.34 No.1/2/3/4, pp.43 - 56

Published online: 16 Oct 2008 *

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