Effect of Acidogenic Stage on Aerobic Toxic Organic Removal
Publication: Journal of Environmental Engineering
Volume 125, Issue 6
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.
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Information
Published In
Journal of Environmental Engineering
Volume 125 • Issue 6 • June 1999
Pages: 495 - 500
History
Published online: Jun 1, 1999
Published in print: Jun 1999
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