Biotreatment of azo dyeing wastewater using a modified anaerobic-anoxic-aerobic reactor system

摘要：

Modified anaerobic-anoxic-aerobic (A2O) technology for dye wastewater was studied. The effects of Hydraulic retention times (HRT), sludge retention time (SRT) and carbon source on treatment efficiency were discussed. Scanning electron microscopes (SEM) for different sludge and UV-visible spectrum analysis for influent and effluent were investigated respectively. The results showed that when COD of influent was 600-1200 mg/L and the dye concentration was 20-40 mg/L, HRT had the obvious effect on treatment efficiency of modified A2O system. Total treatment efficiency of the improved system was more than 90% at the optimal HRT (29 h). The dye structure was demonstrated to be changed during the process. Finally, the dye and its intermediates were transformed and mineralized respectively.

作者: Gang Chen Manhong Huang Liang Chen Donghui Chen

作者单位: College of environmental science and engineering, Donghua University,Shanghai,201620,China College of environmental science and engineering, Donghua University,Shanghai, 201620,China

会议类型: 国际会议

会议名称: 2011 International Conference on Environmental Biotechnology and Materials Engineering(2011年环境生物技术与材料工程国际会议)

会议地点: 哈尔滨

会议语种:英文

页码: 170-175

在线出版日期: 2011-03-26（万方平台首次上网日期，不代表论文的发表时间）