全程自养脱氮反硝化除磷处理城市污水的启动  

Start-up of Municipal Sewage Treatment Based on CANON Coupled with Denitrifying Phosphorus Removal

作　　者：张钰 夏云康 印雯 张星星 徐乐中[1,2] 吴鹏 ZHANG Yu;XIA Yunkang;YIN Wen;ZHANG Xingxing;XU Lezhong;WU Peng(School of Environmental Science and Engineering,Suzhou University of Science and Technology;National Regional Engineering Laboratory of Urban Domestic Wastewater Resources Utilization Technology,Jiangsu High Education Collaborative Innovation Center of Water Treatment Technology and Material:Suzhou 215009,China)

机构地区：[1]苏州科技大学环境科学与工程学院 [2]城市生活污水资源化利用技术国家地方联合工程实验室,江苏省水处理技术与材料协同创新中心,江苏苏州215009

出　　处：《水处理技术》2021年第12期106-111,共6页Technology of Water Treatment

基　　金：国家自然科学基金项目(51578353);江苏省自然科学基金项目(BK20160356);江苏省高校优秀中青年教师和校长境外研修计划项目。

摘　　要：为将全程自养脱氮耦合反硝化除磷工艺应用于城市污水处理,在厌氧折流板反应器(ABR)-膜生物反应器(MBR)运行模拟城市污水。结果表明,进水NH_(4)^(+)-N质量浓度100 mg/L时,调节停曝时间比(60 min:45 min→45 min:45 min)启动耦合工艺,55 d后达到85%以上的碳氮磷去除效果。随后降低进水NH_(4)^(+)-N的质量浓度至50 mg/L,耦合系统运行严重失稳。通过减少溶解氧含量(质量浓度0.6 mg/L→0.4 mg/L)和提高硝化液回流体积比(200%→250%),抑制亚硝酸氧化菌(NOB),恢复并增强优势菌种在低基质环境的适应性,完成耦合工艺处理模拟城市污水的启动,共历时102 d。反应器TN、PO_(4)^(3-)-P、COD的去除率分别达到92.7%、85.8%、92.3%,证明耦合工艺处理城市污水的可行性。In order to achieve the application of CANON coupled denitrifying phosphorus removal process for treating municipal sewage.The ABRMBR reactor was operated for simulated municipal sewage treatment.The results showed that the removal rate more than 85%of carbon,nitrogen and phosphorus after 55 d coupling process,when the influent water at NH_(4)^(+)-N(mass concentration 100 mg/L)and adjusting the stop-exposure ratio from 60 min:45 min to 45 min:45 min.Then the NH_(4)^(+)-N concentration of the influent was reduced to 50 mg/L,the operation of the coupling system was seriously destabilized.By reducing the dissolved oxygen from 0.6 mg/L to 0.4 mg/L and increasing the nitrate reflux ratio from 200%to 250%,the inhibition of NOB and enhancement of the dominant strains adaptability in the low substrate environment were obtained.The start-up of the coupling process for the treatment of simulated municipal sewage was completed,and this process need a total of 102 d.The removal efficiencies of TN,PO43--P and COD respectively reached 92.7%,85.8%and 92.3%,demonstrated the feasibility of the coupling process to treat municipal sewage.

关 键 词：全程自养脱氮 反硝化除磷 耦合 城市污水 启动 

分 类 号：X799.3[环境科学与工程—环境工程]