A/A/O微曝氧化沟工艺提标改造效果分析  

Analysis on upgrading and reconstruction effect of A/A/O microaeration oxidation ditch process

作　　者：陈杏 罗俊晖 李治国 姚创 刘建新 袁维芳 CHEN Xing;LUO Junhui;LI Zhiguo;YAO Chuang;LIU Jianxin;YUAN Weifang(Guangdong Environmental Research Institute Co.,Ltd.,Guangzhou 510080,China;Guangdong Guangye Equipment Science&Technology Research Institute Co.,Ltd.,Guangzhou 510700,China;Tsinghua Shenzhen International Graduate School,Shenzhen 518055,China;School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Guangdong Research Institute of Engineering and Technology Co.,Ltd.,Guangdong Wastewater Treatment Engineering Technology Center of Standard&Efficiency Increasing and Resource Recycling,Guangzhou 510440,China)

机构地区：[1]广东省环保研究总院有限公司,广州510080 [2]广东省广业装备科学技术研究院有限公司,广州510700 [3]清华大学深圳国际研究生院,广东深圳518055 [4]江西理工大学资源与环境学院,江西赣州341000 [5]广东省工程技术研究所有限公司广东省污水处理提标增效及资源化利用工程技术研究中心,广州510440

出　　处：《工业用水与废水》2023年第3期26-31,共6页Industrial Water & Wastewater

摘　　要：采用固定式填料对A/A/O微曝氧化沟工艺进行提标改造,可提升系统的脱氮除磷性能。在生化池固定式填料填充体积比为10%的条件下,出水COD、NH_(4)^(+)-N、TN及TP平均质量浓度分别为28.7、2.42、6.86和0.32 mg/L,满足GB 18918—2002《城镇污水处理厂污染物排放标准》一级A排放标准,且处理水量提升了17.43%。高通量测序结果表明,提标改造后在门水平优势菌群主要为绿湾菌门(Chloroflexi)、放线菌门(Actinobacteriota)及拟杆菌门(Bacteroidota),三者相对丰度之和大于60%,且Chloroflexi相对丰度大于30%。在属水平优势菌群为硝化菌属(norank_f_Saprospiraceae、Nitrospira、Mycobacterium)、反硝化菌属(Rhodoplanes)及聚磷菌属(Acinetobacter及Tetrasphaera)。固定式填料-泥膜复合A/A/O微曝氧化沟中填料生物膜有利于菌群结构优化和功能微生物的富集。Using fixed filler to upgrade and reconstruct A/A/O microaeration oxidation ditch process could improve the nitrogen and phosphorus removal efficiency of the system.Under the condition that the filling volume ratio of the fixed filler in biochemical pool was 10%,the average mass concentrations of COD,NH_(4)^(+)-N、TN and TP were 28.7,2.42,6.86 and 0.32 mg/L respectively,which satisfied the requirement of level A grade 1 in GB 18918—2002 Discharge standard of pollutants for municipal wastewater treatment plant,the treating capacity was promoted by 17.43%.The results of high-throughput sequencing indicated that after the upgrading and reconstruction,the dominant flora at phyla level was Chloroflexi,Actinobacteriota and Bacteroidota,and the total relative abundance was above 60%,besides,the relative abundance of Chloroflexi was above 30%.The dominant flora at generic level were nitrobacter(norank_f_Saprospiraceae,Nitrospira,Mycobacterium),denitrification bacteria(Rhodoplanes)and phosphorus accumulating bacteria(Acinetobacter and Tetrasphaera).It could be seen that,the packed biofilm in fixed filler-mudpack combined A/A/O microaeration oxidation ditch was beneficial for microbial community optimization and functional microbial enrichment.

关 键 词：微曝氧化沟 A/A/O 脱氮除磷 固定式生物填料 菌群 反硝化除磷菌 提标改造 

分 类 号：X703.1[环境科学与工程—环境工程] X505