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Hybrid reactor for priority pollutant-trichloroethylene removal

DSpace at IIT Bombay

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Field Value
 
Title Hybrid reactor for priority pollutant-trichloroethylene removal
 
Creator MISRA, C
GUPTA, SK
 
Subject oxidizing bacteria
methane
degradation
cultures
toluene
propane
system
water
trichloroethylene
trickling filter
activated sludge process
biodegradation
 
Description The present study was initiated to explore the potential of a hybrid biological reactor, combining trickling filter (TF) and activated sludge process (ASP), to treat wastewater containing trichloroethylene (TCE) at ambient temperature at different hydraulic retention time (HRT). The biofilm acclimation was achieved in 55-60 days with gradual increase in TCE concentration from 1 mg/l to 100 mg/l with a parallel increase in the concentration of substrate sodium acetate and other nutrients. COD and TCE concentration were taken as prime parameters for monitoring the growth of biofilm. During acclimation COD removal varied beta een 54.6-97.5% while TCE was removed 72.6-99.9%. HRT study was performed after acclimation. The removal efficiency increased with decreasing flow rate with maximum TCE removal (99.99%) at 6 l/d corresponding to an HRT of 28 h (TF 18 h+ASP 10 h). This was followed by a C:N:P ratio study. A ratio of 100:20:1 led to the sustenance of maximum TCE removal. h Maximum TCE removal (99.99%) was observed at a substrate: cosubstrate ratio of 100:1. A pH of 7.4 +/- 0.2 was found to be optimum for degradation. Finally, volatilization losses were estimated to be 18.5%. A mass balance gave an efficiency of 81.51% for biological removal of TCE. (. .
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-25T07:00:37Z
2011-12-26T12:56:57Z
2011-12-27T05:46:33Z
2011-08-25T07:00:37Z
2011-12-26T12:56:57Z
2011-12-27T05:46:33Z
2001
 
Type Article
 
Identifier WATER RESEARCH, 35(1), 160-166
0043-1354
http://dx.doi.org/10.1016/S0043-1354(00)00249-9
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10931
http://hdl.handle.net/10054/10931
 
Language en