Please use this identifier to cite or link to this item: https://doi.org/10.1061/(ASCE)0733-9372(1999)125:6(495)
Title: Effect of acidogenic stage on aerobic toxic organic removal
Authors: Ng, W.J. 
Hu, J.Y. 
Ong, S.L. 
Aziz, M.A. 
Issue Date: 1999
Source: Ng, W.J., Hu, J.Y., Ong, S.L., Aziz, M.A. (1999). Effect of acidogenic stage on aerobic toxic organic removal. Journal of Environmental Engineering 125 (6) : 495-500. ScholarBank@NUS Repository. https://doi.org/10.1061/(ASCE)0733-9372(1999)125:6(495)
Abstract: A laboratory investigation explored treatment of wastewaters containing nitrobenzene, biphenyl, and polynuclear aromatic hydrocarbons (PAHs) by two aerobic reactors, with and without acidogenic pretreatment. A sequencing batch operation was adopted for both acidogenic-aerobic and aerobic systems. Results indicated that nitrobenzene, biphenyl, and PAHs such as naphthalene and anthracene could be effectively removed by the acidogenic-aerobic system with removal efficiencies of more than 98% for nitrobenzene, 97% for biphenyl, and 96% for the PAHs, with a hydraulic retention time of the acidogenic stage at as low as 8 h. The acidogenic-aerobic system was therefore found to be effective in treating wastewaters containing such complex organics. The relatively low hydraulic retention time required for the acidogenic stage makes the process a potentially cost-effective technology.
Source Title: Journal of Environmental Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/65474
ISSN: 07339372
DOI: 10.1061/(ASCE)0733-9372(1999)125:6(495)
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