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Authors
Affiliations
1 Department of Civil Engineering, Govt. College of Technology, Coimbatore-641 013, T.N., IN
Source
Nature Environment and Pollution Technology, Vol 7, No 2 (2008), Pagination: 219-224
Abstract
A study was performed on anaerobic filter reactor to identify the startup time and optimum HRT required for treatment of poultry slaughter house wastewater. Initially, the reactor was loaded at an OLR of 0.77 gCOD/L/day and HRT of 36 h. Loading rates were increased by reducing HRT to 24, 16, 12, 10 and 8 h, which corresponds to the OLR of 1.15, 1.74, 2.27, 2.88, 3.43 gCOD/L/day. At an optimum HRT of 12 h, AF reactor shows TCOD and SCOD removal efficiencies of 69.5% and 77% respectively. Lower COD removal efficiency of 66% was observed when the HRT was reduced beyond 12 h. The SS removal efficiency was 76 %. Finally the reactor took 144 days for complete start-up. The granule size of 1-2 mm and settling velocities of granules of 0.5 to 0.83 m/min were observed in the reactor.
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