短程硝化-厌氧氨氧化耦合反硝化系统处理集便器污水  

Treatment of toilet sewage by coupled denitrification system of short-cut nitrification and anammox

作　　者：班玮璘 田立红 李泽莹 王锦[1] 祁琳琳 俞铭杰 BAN Weilin;TIAN Lihong;LI Zeying;WANG Jin;QI Linlin;YU Mingjie(Department of Municipal&Environmental Engineering,School of Environmental,Beijing Jiaotong University,Beijing 100044,China;China Railway Wuhan Group Co.,Ltd,Wuhan 430071,China)

机构地区：[1]北京交通大学环境学院市政与环境工程系,北京100044 [2]中国铁路武汉局集团有限公司,武汉430071

出　　处：《环境工程学报》2023年第4期1128-1137,共10页Chinese Journal of Environmental Engineering

基　　金：中国国家铁路集团有限公司科技研究开发项目(N2020Z007)。

摘　　要：集便器污水具有高有机物、高悬浮物、高氨氮、高磷及低碳氮比的特点。采用一体式短程硝化-厌氧氨氧化耦合反硝化系统进行集便器污水的污染物去除效能研究。结果表明,将氨氮为400~500 mg·L^(-1)、COD约400 mg·L^(-1)的集便器污水作为实验进水,按照分阶段分比例的进水方式,经过约75 d运行,最终出水氨氮及总氮仅为40.20 mg·L^(-1)和67.40 mg·L^(-1),去除率分别为90.84%和86.90%,总氮去除负荷为0.141 kg·(m^(3)·d)^(-1)。微生物分析结果表明,Candidatus_Brocadia始终是系统内的厌氧氨氧化优势菌属,且运行稳定后其相对丰度达到约30.70%。本研究可为集便器污水脱氮工艺应用技术提供参考。The toilet sewage has the characteristics of high organic matter,high suspended matter,high ammonia nitrogen,high phosphorus and low carbon nitrogen ratio,the integrated short-cut nitrification and anammox coupled denitrification system was adopted in this paper to study the pollutant removal efficiency of the toilet sewage.The results showed that the sewage water with ammonia concentration of 400~500 mg·L^(−1),COD concentration of about 400 mg·L^(−1) after pretreatment with A/O device was used as the experimental water.In a phased and proportional way,the coupled system ran for 75 days,then the ammonia and total nitrogen concentrations in the final effluent were only 40.2 mg·L^(−1) and 67.4 mg·L^(−1),and the removal rates were as high as 90.84%and 86.9%,respectively.The total nitrogen removal load was 0.141 kg·(m^(3)·d)^(−1).Microbial analysis showed that Candidatus Brocadia was always the dominant anammox genus in the system and its relative abundance reached 30.7% after stable operation.This study can provide reference for the application technology of nitrogen removal of toilet sewage to achieve efficient and economical nitrogen removal.

关 键 词：集便器污水 厌氧氨氧化 脱氮 微生物多样性 

分 类 号：X703.1[环境科学与工程—环境工程]