文献类型：期刊文献

英文题名：Performance of oxidation-reduction potential-based hydrolysis and acidification process for high-strength antibiotic wastewater treatment

作者：Ding, Lei[1];Xu, Xin[1];Zhang, Juan[1];Shao, Junna[1];Zhao, Yixian[1]

机构：[1]E China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2016

卷号：57

期号：16

起止页码：7287

外文期刊名：DESALINATION AND WATER TREATMENT

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000373352500016)】；

基金：The authors wish to thank the National Natural Science Foundation of China ( Grant No. 51008125) and the Fundamental Research Funds for the Central Universities ( Grant No. 222201314034) for supporting this study.

语种：英文

外文关键词：Antibiotic wastewater; Hydrolysis and acidification; Oxidation-reduction potential; Biodegradability

摘要：This study used hydrolysis and acidification process under appropriate oxidation-reduction potential (ORP) condition to treat high-strength antibiotic wastewater. ORP was controlled at approximately -100 mV through air-flow regulation. Results showed that the appropriate ORP condition enhanced the physiological metabolic function of facultative hydrolytic and acidogenic bacteria, and aerated stirring improved the hydraulic condition. Acidification degree (AD) and effluent volatile fatty acid (VFA) reached 58.64% and 4,825 mg/L, respectively, at the shortest hydraulic retention time of 10 h and the maximum organic loading rate (OLR) of 20 kg COD/(m(3)d). Wastewater biodegradability was improved by approximately 17%, thus providing good substrate for post-aerobic treatment. Relatively stable effluent was achieved with the fluctuant influent, and COD and SS removal efficiencies were 15-30% and 90-95%, respectively. The change in VFA lagged behind the AD in the effluent, indicating that AD could better represent the effects of hydrolysis and acidification process. The height of the reactor for stable VFA production increased as the OLR increased.