双循环两相生物处理工艺处理城市污水最佳工况研究  

Study on the Optimum Operation of Using BICT to Treat Municipal Wastewater

作　　者：于淼[1] 黄勇[1] 潘杨[1] 杨志斌[1] 薛艳[1] 

机构地区：[1]苏州科技学院环境科学与工程学院,江苏苏州215011

出　　处：《苏州科技学院学报（工程技术版）》2008年第2期35-38,共4页Journal of Suzhou University of Science and Technology （Engineering and Technology）

基　　金：国家"863"计划资助项目(2003AA601070);江苏高校高新技术产业发展项目(JH02-119)

摘　　要：通过中试试验,研究了不同运行模式下双循环两相生物处理工艺(BICT)对城市污水的处理效果,得出了最佳运行工况参数,即:主反应器泥龄5d、充水比1/2、硝化液回流比150%。主反应器运行模式为:前曝气30min,缺氧搅拌60min,后曝气60min,沉淀撇水90min,前曝气阶段(30min)和缺氧搅拌阶段前30min同时进水。结果表明,当系统在此工况下运行时,该工艺对城市污水中COD、TN、TP的去除率分别能达到80%、80%、90%以上。The treatment of municipal wastewater by BICT pilot-plant in different operational modes is investigated in this paper. In this operation, the optimum operational parameters are obtained, including main reactor＇s SRT 5 d, water input ratio 1/2, returned flow ratio 150%. The operational mode of the main reactor is first aeration 30 min, anoxic mixing 60 min, second aeration 60 min, settling-discharge-idle 90 min, filling time 60 min （distributing in the whole first aeration phase and the first 30 min of anoxic mixing phase）. The results indicate that the removal efficiency of COD, TN and TP of sewage can reach above 80%, 80% and 90%, respectively, when the system is operated this way.

关 键 词：BICT 城市污水 脱氮除磷 最佳工况 

分 类 号：X703[环境科学与工程—环境工程]