Record Details

Treatment of petrochemical wastewater by rotating biological contactor

DSpace at IIT Bombay

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Title Treatment of petrochemical wastewater by rotating biological contactor
 
Creator KUBSAD, V
GUPTA, SK
CHAUDHARI, S
 
Subject denitrification
reactor
rotating biological contactor
petrochemical wastewater
biological treatment
cyanide removal
 
Description A laboratory scale study has been conducted to assess the efficiency of rotating biological contactor (RBC) to treat the synthetic wastewater from a petrochemical industry producing acrylonitrile. The attached biomass was acclimatised by gradually increasing cyanide concentration from 5 to 40 mg 1(-1) with simultaneous increase in the concentration of chemical oxygen demand(COD)and ammonium nitrogen(NH4->-N). During acclimatization COD removal varied between 80-88 percent(%)while cyanide removal was more than 99%. The RBC was operated at varying hydraulic loading rates from 0.011 to 0.027 m(3) m(-2) d(-1). The performance of the RBC was monitored for various parameters like COD, 5-day biochemical oxygen demand at 20-degree centigrade (degrees C) [BOD5], cyanide, ammonium nitrogen etc., for all hydraulic loadings. At all hydraulic loadings the cyanide removal remained more than 99%. The removals obtained in terms of percentage, for cyanide, COD, BOD5, and NH4->-N were greater than (>) 99, 95.2, 99.1 and 77, respectively at hydraulic loading of 0.011 m(3) m(-2) d(-1). The effect of substrate/ cyanide ratio on the performance of the process at five different ratios, 100/1, 80/1, 60/1, 40/1 and 20/1, showed more than 99% cyanide removal at ratio 20/1. The effect of COD/nitrogen (N) ratio was studied at four different ratios, 12/1, 10/1, 8/1 and 6/1, showed cyanide removal remained unaffected. The variation of biomass concentration within the system was also studied.
 
Publisher SELPER LTD, PUBLICATIONS DIV
 
Date 2011-08-29T04:04:52Z
2011-12-26T12:58:23Z
2011-12-27T05:48:14Z
2011-08-29T04:04:52Z
2011-12-26T12:58:23Z
2011-12-27T05:48:14Z
2005
 
Type Article
 
Identifier ENVIRONMENTAL TECHNOLOGY, 26(12), 1317-1326
0959-3330
http://dx.doi.org/10.1080/09593332608618614
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11950
http://hdl.handle.net/10054/11950
 
Language en