AOA工艺内源反硝化强化深度脱氮除磷  

Advanced Nitrogen and Phosphorus Removal in the AOA System with Endogenous Denitrification

作　　者：赵伟华 王梅香[4] 王忠祥[3] 刘洪兵 李亚霖 鞠鸿林 ZHAO Weihua;WANG Meixiang;WANG Zhongxiang;LIU Hongbing;LI Yalin;JU Honglin(State and Local Joint Engineering Research Center of Municipal Wastewater Treatment and Resource Recycling,Qingdao University of Technology,Qingdao 266033,China;National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology,Beijing University of Technology,Beijing 100124,China;Harbin Institute of Technology,Weihai 264209,China;Beijing Urban Drainage Group Co.,Ltd,Beijing 100037,China)

机构地区：[1]青岛理工大学,城镇污水处理与资源化国家地方联合工程中心,山东青岛266033 [2]北京工业大学,城镇污水深度处理与资源化利用技术国家工程实验室,北京100124 [3]哈尔滨工业大学,山东威海264209 [4]北京城市排水集团有限责任公司,北京100037

出　　处：《水处理技术》2022年第7期98-101,106,共5页Technology of Water Treatment

基　　金：山东省自然科学基金青年基金(ZR2020QE230);哈尔滨工业大学青年教师发展基金(ITBAZMZ801903)。

摘　　要：以实际低C/N生活污水为处理对象,考察了AOA(厌氧/好氧/缺氧)工艺内源反硝化脱氮除磷性能。实验重点研究了生物填料的快速挂膜情况、微生物种群结构变化和系统脱氮除磷效率。结果表明,接种污泥后系统污染物去除性能迅速提高,阶段Ⅲ出水COD、NH_(4)^(+)-N、TIN、TP平均浓度分别为33.36 mg/L、1.80 mg/L、5.27 mg/L和0.23 mg/L,相应的去除率分别77.4%、94.6%、84.3%和94.2%。FISH实验结果表明,活性污泥中功能菌聚糖菌GAOs占比13.5%,聚磷菌PAOs占比11.1%,生物膜上硝化菌AOB占比18.3%,NOB占比9.2%。在无外加碳源条件下,系统利用原水内碳源通过后置内源反硝化和反硝化除磷实现深度脱氮除磷,同时AOA工艺只有污泥回流,较传统A^(2)O工艺节省了硝化液回流能耗,运维管理方便。Taking the practical domestic sewage with low carbon to nitrogen(C/N)ratio as the object,nitrogen and phosphorus removal performances of endogenous denitrification were investigated in the AOA(anaerobic/oxic/anoxic)system.The characteristics of biofilm formation,microbial population structure,and nitrogen and phosphorus removal efficiency were studied.Results indicated that the pollutants removal efficiency was improved rapidly after seeding sludge.During the phase Ⅲ,the average concentrations of effluent COD,NH_(4)^(+)-N,TIN,TP were 33.36 mg/L,1.80 mg/L,5.27 mg/L and 0.23 mg/L,respectively,and the corresponding removal efficiency were 77.4%,94.6%,84.3%and 94.2%respectively.FISH test results showed that the functional bacteria GAOs accounted for 13.5%and PAOs occupied 11.1%in activated sludge,AOB and NOB occupied 18.3%and 9.2%,respectively.Without additional carbon source,advanced nitrogen and phosphorus removal was achieved with the internal carbon source in sewage through post endogenous denitrification and denitrifying phosphorus removal.Meanwhile,AOA process only had single sludge reflux,which saved the energy consumption of nitrification liquid reflux and was convenient for operation management compared with the traditional A^(2)O process.

关 键 词：低碳氮比 内源反硝化 反硝化除磷 生物膜 功能菌 

分 类 号：X703[环境科学与工程—环境工程]