缺氧混合液回流对改良UCT工艺影响研究  

Research effect about anoxic mixed liquid reflux ratio on the performance of modified UCT system

作　　者：宋文哲 林甲 刘杰 王凯军[2] 刘志远 李传举 陈磊 宋沈鑫 SONG Wenzhe;LIN Jia;LIU Jie;WANG Kaijun;LIU Zhiyuan;LI Chuanju;CHEN Lei;SONG Shenxin(Post-doctoral Research Station,Beijing Capital Eco-Environment Protection Group Co.,Ltd.,Beijing 100044,China;School of Environment,Tsinghua University,Beijing 100084,China;Sichuan Shuihui Ecological Environment Management Co.,Ltd.,Neijiang 641199,China)

机构地区：[1]北京首创生态环保集团股份有限公司博士后工作站,北京100044 [2]清华大学环境学院,北京100084 [3]四川水汇生态环境治理有限公司,内江641199

出　　处：《给水排水》2022年第6期55-61,75,共8页Water & Wastewater Engineering

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07102-003)。

摘　　要：以城市生活污水为进水,研究了不同缺氧段混合液回流比对改良UCT工艺反硝化除磷的影响,结果发现当缺氧段混合液回流比为80%时,出水COD、氨氮、总氮和总磷的去除率分别为85.59%、99.18%、83.38%和88.45%。在将缺氧段混合液回流比提高至160%后,出水COD、氨氮、总氮和总磷的去除率分别为81.48%、99.37%、70.85%和61.83%。提高回流比对COD和氨氮去除影响不大,但系统脱氮除磷性能变差,降低回流比后脱氮除磷性能恢复。批量试验结果也表明将回流比提高至160%时反硝化除磷性能变差,过高的回流比会导致丝状菌生长。To investigate the different anoxic mixed liquid reflux ratio on the denitrifying phosphorus removal performance of modified UCT-process,this research used the municipal wastewater as the influent.The effluent COD value,ammonia nitrogen,total nitrogen and total phosphorus removal ratio were 85.59%,99.18%,83.38% and 88.45%,respectively,with the anoxic mixed liquid reflux ratio of 80%.The effluent COD value,ammonia nitrogen,total nitrogen and total phosphorus removal ratio were 81.48%,99.37%,70.85% and 61.83%,respectively,after the ratio changed to 160%.The increase of reflux ratio had little effect on the removal of COD value and ammonia nitrogen removal,however,the removal performance of total nitrogen and phosphorus deteriorated.The batch experiment results also showed that the denitrifying phosphorus removal performance deteriorated when the reflux ratio was increased to 160%,and high reflux ratio would lead to the growth of filamentous bacteria.

关 键 词：反硝化聚磷 缺到厌回流比 改良UCT工艺 城市污水 

分 类 号：TU992[建筑科学—市政工程]