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Enumeration of anaerobic bacteria from upflow anaerobic sludge blanket (UASB) reactor for the treatment of chemical industry waste water

IR@IICT: CSIR-Indian Institute of Chemical Technology, Hyderabad

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Field Value
 
Creator Annapurna, J
Prasad, K.K
Naidu, G.V
GangagniRao, A
 
Date 2008-12-10T10:12:00Z
2008-12-10T10:12:00Z
2004
 
Identifier Asian Journal of Microbiology Biotechnology Environmental Science, Vol.6, 253-258p
http://hdl.handle.net/123456789/33
 
Description The granulation process using synthetic wastewater containing pentachlorophenol (PCP) in four 1.1 l laboratory scale upflow anaerobic sludge blanket (UASB) reactors was studied, and the anaerobic biotransformation of PCP during the granulation process investigated. After 110 days granular sludge was developed and up to 160 and 180 mg/l of PCP was added into the reactors R1 and R2, respectively, when they were inoculated with acclimated anaerobic sludge from an anaerobic digester of a citric acid plant. The inoculum was predominately composed of bacilli and filamentous bacteria. Granulation did not occur in reactors R3 and R4 which were inoculated with acclimated anaerobic sludge from aerobic sludge of the municipal sewage treatment plant which consisted mainly of cocci. Despite similar bacilli in the granule, the filamentous bacteria from reactor R1 were thicker than those of reactor R2. The granular sludge had a maximum diameter of 2.5 and 2.2 mm, and SMA of 1.44 and 1.32 gCOD/gTVS per day for reactors R1 and R2, respectively. Over 98% chemical oxygen demand (COD) removal rate and 99% of PCP removal rate were achieved when reactors R1 and R2 were operated at PCP and COD loading rates of 150 and 7.5 g/l per day, respectively. H2-producing acetogens were the dominant anaerobes in the granular sludge.
 
Subject SRB's
Acetogens
Methanogens
COD&BOD
UASB
 
Title Enumeration of anaerobic bacteria from upflow anaerobic sludge blanket (UASB) reactor for the treatment of chemical industry waste water
 
Type Article