Performance of Rotating Biological Contactor for Treating Segregated Grey Water for Reuse
V. Nehru Kumar1, S. Syed Enayathali2

1V.Nehru Kumar, Professor and Director, Centre for Environment, Health and Safety, Annamalai University, Annamalai Nager (Tamil Nadu), India.
2S.Syed Enayathali, Ph.D. Scholar, Department of Civil Engg., Annamalai University, Annamalai Nager (Tamil Nadu), India.
Manuscript received on 18 June 2012 | Revised Manuscript received on 25 June 2012 | Manuscript published on 30 June 2012 | PP: 40-41 | Volume-1 Issue-2, June 2012 | Retrieval Number: B0190051212/2012©BEIESP
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Abstract: The laboratory model of two-stage Rotating Biological Contactor (RBC) which was used in the present study is a modified one, with a provision to vary the speed of rotating blades. Grey wastewater was used to study the performance of the modified rotating biological contactor. The reactor had four rotating blades in each stage, having the size of 300 mm x100 mm x 10 mm, attached perpendicular to the shaft. The experiment was conducted for different influent COD loads and different speeds of rotating blades. Among the different speeds of rotational blades in treating grey water, the rotational speed of 3 rpm was found to yield better percent removal of COD at 95.07% as maximum, where as against the rotational speeds of 4.5 and 6 rpm, the treatment efficiency is 95.04% and 94.96% respectively.
Keywords: RBC, Rotating Blades, Grey Water, COD, OLR,

Scope of the Article: Water Supply and Drainage