Development of a novel modified EGSB reactor for municipal sewage treatment at ambient temperatures

作     者：周雪飞 张亚雷 张选军 强志民 赵建夫 

作者机构：Key Laboratory of Yangtze Water Environment of Ministry of EducationTongji University Research Center for Eco-Environmental SciencesChinese Academy of Sciences State Key Laboratory of Pollution Control and Resource ReuseTongji University 

出 版 物：《Journal of Harbin Institute of Technology(New Series)》 (哈尔滨工业大学学报（英文版）)

年 卷 期：2009年第16卷第4期

页      面：554-560页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：Sponsored by the National Natural Science Foundation of China(Grant No.20876117) National Key Technologies Research & Development Program(Grant No.2006BAJ08B10,2006BAJ04A07,2008BAJ08B21) 

主　　题：modified expanded granular sludge bed reactor municipal sewage anaerobic treatment hydrodynamic characteristic PCR-DGGE 

摘      要：A novel modified expanded granular sludge bed(EGSBm) reactor was developed for anaerobic treatment of municipal sewage with mixed liquid recirculation instead of effluent recirculation commonly adopted by a conventional EGSB(EGSBc) *** of these two reactors were compared in treating municipal sewage at ambient temperatures ranging from 8 to 26 ℃.At an upflow liquid velocity(Vup) of 10.3 m/h,the mean concentrations of filtrated COD(CODfilt) and COD of the EGSBm effluent were determined to be 59.4 and 95.9 mg/L,respectively,which were significantly lower than those of the EGSBc effluent operated under identical experimental *** the organic loading rate was suddenly increased from 1.2 to 7.2 kg COD/(m3·d),the EGSBm regained the removal efficiency of previous operation phase in 10 *** characteristics of the reactors were compared using the residence time distribution(RTD) *** was found that the treatment efficiency of EGSBm kept increasing as the Vup *** polymerase Chain Reaction-Denaturing Gradient Gel Electrophoresis(PCR-DGGE) technique was used to analyze the microbial diversity in *** pattern indicated that some species in the inoculating sludge were still reserved in the granular sludge of EGSBm,moreover,several new species occurred.