双循环两相生物处理工艺硝化区中试运行控制研究  

Research of Course and Control in the Bio-film Reactor in Mid-test of the BICT Process

作　　者：杨志斌[1] 黄勇[1] 潘杨[1] 薛艳[1] 

机构地区：[1]苏州科技学院环境科学与工程系,江苏苏州215011

出　　处：《苏州科技学院学报（工程技术版）》2007年第1期34-38,共5页Journal of Suzhou University of Science and Technology （Engineering and Technology）

基　　金："十五"国家重大科技专项(2003AA601070);江苏省高校高新技术产业发展项目(JH02-119);江苏省社会发展科技计划项目(BS2002332)

摘　　要：对双循环两相生物处理(BICT)工艺中试试验中生物膜硝化反应器(硝化区)的挂膜启动、实际运行控制和影响因素进行了研究。结果表明,挂膜期间,在水温20～30℃的条件下,适宜挂膜的控制条件为:溶解氧2～4mg/L、有机负荷≤0.2kgCOD/(m3.d),培养时间不少于25d;实际运行中,水温、有机负荷、硝化液回流比是影响硝化区运行的主要因素。在水温25～33℃、有机负荷0.35～0.7kgCOD/(m3.d)、回流比150%左右的条件下,硝化区运行稳定高效,同时系统的总氮去除效果也较好,氨氮去除率稳定在90%左右,总氮的去除在80%左右。硝化区出水的硝态氮形式主要是硝酸盐,亚硝酸盐含量很低。In this paper, the startup, actual effects, controlling strategy and influencing factors of the bio-film reactor in BICT pilot scale experimentation are investigated. In the process of training bio-film, under the temperature change from 20 ℃ to 30 ℃, several factors should be controlled： the COD load should be lower（about 0.2 kgCOD/（m^3·d））, the DO should be 2-4 mg/L and the startup time should be above 25 days. During the steady state in actual course, the temperature, COD load and circumfluence rate are the main outer influencing factors and controlling conditions of bio-film reactor. In the condition of the temperature 25 ℃-33 ℃, COD load 0.35- 0.7 kgCOD/（m^3·d）and around 150% circumfluence rate, the nitrification and the TN-removal effect are steady and effective; the effect of NH3-N removal is around 90%, the TN-removal capacity is around 80% and the main form of nitration is nitrate.

关 键 词：BICT 脱氮除磷 生物膜 双泥系统 

分 类 号：X703.1[环境科学与工程—环境工程]