SBR法交替缺氧好氧模式下短程硝化效率的优化  

Optimization of efficiency on partial nitrification under the mode of alternating anoxic/oxic in sequencing batch reactor

作　　者：高春娣[1] 王惟肖[1] 李浩[1] 焦二龙[1] 彭永臻[1] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100124

出　　处：《中国环境科学》2015年第2期403-409,共7页China Environmental Science

基　　金：国家自然科学基金项目(51478012);国家青年自然科学基金(51108005);北京市教育委员会科技计划项目(KM201410005009)

摘　　要：采用SBR法以实际生活污水为研究对象,通过交替缺氧好氧的运行模式实现了短程硝化的快速启动.在不同的缺/好氧时间比条件下考察了短程硝化的启动时间、污染物处理效果以及氨利用速率的变化.结果表明,在缺氧/好氧时间比为1：1和2：1条件下,分别用了31,55d使得两系统的亚硝酸盐积累率达到90%,短程状态稳定.氨氮去除率达到95%以上,COD出水在50mg/L以下,总氮去除率提高20%,污染物的去除效率有所提高.由全程到短程的转变期间,系统氨利用速率分别提高了67.5%和89.8%,同时提高了短程硝化的效率.期间,污泥沉降性较好,污泥容积指数稳定在60~80m L/g.Using Sequencing Batch Reactor（SBR） treating domestic wastewater,quick start of partial nitrification was carried out through the mode of alternating anoxic/oxic. Time of achieved partial nitrification,treatment efficiency and ammonia utilization rate were investigated in different ratio of anoxic/oxic time. The results showed that the ratio of anoxic/oxic time was 1：1and 2：1,while two systems nitrite accumulation rate raised to 90% after 31 days and 55 days respectively,the state of partial nitrification was stable. Besides,ammonia removal efficiency was attained above 95% and the COD effluent concentration was less than 50mg/L. The total nitrogen removal was enhanced about 20%,and pollutants removal efficiency was increased. Form the complete nitrification to the partial nitrification,ammonia utilization rate increased 67.5% and 89.8% respectively,at the same time,efficiency of the partial nitrification was improved. Meanwhile,sludge had significantly better settling performance,sludge volume index was stable at 60~80m L/g.

关 键 词：废水 交替缺氧好氧 短程硝化 氨利用速率 沉降 

分 类 号：X703.1[环境科学与工程—环境工程]