新型生物反应器处理微污染原水的硝化效果  

Study on Nitrification of Micro-polluted Raw Water by New Biological Reactor

作　　者：牛天新[1] 郑洁敏[1] 黄国宁[1] 

机构地区：[1]杭州市农业科学研究院,浙江杭州310024

出　　处：《中国给水排水》2012年第5期36-39,共4页China Water & Wastewater

基　　金：国家自然科学基金资助项目(50678102)

摘　　要：为探寻适宜的微污染原水处理工艺,将蜂窝陶瓷载体置于内循环管中而构成气升式内循环蜂窝陶瓷反应器(IAL-CHS)。采用该工艺处理上海漕河泾水,考察了HRT、水温、pH值、溶解氧对去除氨氮的影响。在反应器挂膜启动后,连续运行的去除效果比间歇运行的好。HRT是影响硝化效果的重要因素,通过连续运行试验确定了最佳的HRT为1.03 h,此时对氨氮的去除率稳定在84.8%～99.2%。对氨氮的去除率与水温近似呈直线关系,温度越高则去除效果越好;河水的pH值对硝化反应影响不大;DO达到3.16 mg/L就能获得较好的处理效果,此时的曝气量为0.15 m3/h。此外,该反应器还具有抗冲击负荷能力强、不易堵塞等优点。Ceramic honeycomb support was installed in internal loop to make the internal airlift loop - ceramic honeycomb support （IAL-CHS） reactor for the treatment of micro-polluted raw water. The process was used to treat Caohejing River water in Shanghai, and the influence of HRT, temperature, pH and dissolved oxygen on NH4^＋ - N removal was investigated. Continued flow attained higher treatment ef- ficiency than intermittent flow after reactor startup. HRT was an important factor on nitrification. The op- timal HRT of 1.03 h was determined for continuous flow operation. The removal rate of ammonia nitrogen was stable at 84.8% to 99.2%. Also, the removal rate of ammonia nitrogen improved linearly with in- creasing water temperature. The pH of river water had little influence on the nitrification reaction. Dis- solved oxygen of 3.16 mg/L and aeration intensity of 0.15 ma/h worked best for ammonia nitrogen removal. The reactor＇ s strong resistance to impact load meant that blocking was difficult.

关 键 词：微污染原水 蜂窝陶瓷载体 硝化 

分 类 号：TU991.2[建筑科学—市政工程]