三级厌氧氨氧化处理生活污水与硝酸盐废水  

Simultaneous removal of domestic wastewater and nitrate wastewater by three-stage anammox system

作　　者：韩可心 张琼[1] 冯岩[1] 李夕耀[1] 彭永臻[1] HAN Ke-xin;ZHANG Qiong;FENG Yan;LI Xi-yao;PENG Yong-zhen(National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology,Engineering Research Center of Beijing,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学,城镇污水深度处理与资源化利用国家工程实验室,北京市污水脱氮除磷处理与过程控制工程技术研究中心,北京100124

出　　处：《中国环境科学》2022年第2期637-643,共7页China Environmental Science

基　　金：北京市教育委员会科技重大项目(PXM2019_014204_000092)。

摘　　要：为进一步充分利用原水中碳源,实现生活污水与富含硝酸盐的工业废水同步脱氮,采用2个SBR和1个UASB串联,处理低C/N生活污水和硝酸盐废水,分别启动内源反硝化反应器(ED-SBR)、半短程硝化反应器(PN-SBR)和厌氧氨氧化反应器(AMX-UASB),考察各反应器处理性能,并探讨生活污水与硝酸盐废水同步脱氮的可行性.结果表明:ED-SBR在厌氧阶段能将进水中77.5%的有机物转化为内碳源,在缺氧阶段进行内源反硝化,平均出水NO_(3)^(-)-N浓度为3.4mg/L,达到90.4%的平均去除率;PN-SBR在低DO条件下(0.1~0.3mg/L)能够实现稳定的半短程硝化,亚硝酸盐积累率(NAR)达96.3%,出水NO_(2)^(-)-N/NH^(4)^(+)-N的比值为1.01,可为厌氧氨氧化提供稳定底物;AMX-UASB将进水中的NH^(4)^(+)-N和NO_(2)^(-)-N转化为N_(2)和NO_(3)^(-)-N,出水NO_(3)^(-)-N平均为7.12mg/L.该系统平均进出水TIN分别为77.5和8.2mg/L,TIN去除率平均为89.2%.为生活污水与含高NO_(3)^(-)-N的废水同步脱氮提供了一条有效途径.To further utilize carbon source,endogenous denitrification reactor(ED-SBR)、partial nitrification reactor(PN-SBR)and anammox reactor(AMX-UASB)were used to treat low C/N domestic wastewater and industrial wastewater rich in nitrate.The feasibility of simultaneous denitrification of domestic wastewater and nitrate wastewater was discussed.77.5%of the organic matter in the influent could be converted into internal carbon source in the ED-SBR anaerobic stage,and endogenous denitrification was carried out in the anoxic stage.The average NO_(3)^(-)-N concentration in the effluent was 3.4mg/L,reaching an average removal rate of 90.4%;PN-SBR can achieve stable half shortcut nitrification under low do(0.1~0.3mg/L),Nitrite Accumulation Ratio(NAR)is 96.3%,and the ratio of NO_(2)^(-)-N/NH^(4)^(+)-N in effluent is about 1.01,which can provide stable substrate for anammox;AMX-UASB reduces NH^(4)^(+)-N and NO_(2)^(-)-N in influent is converted to N_(2) and NO_(3)^(-)-N.The average effluent of NO_(3)^(-)-N was 7.12mg/L.The average TIN concentration of inlet and outlet water was 77.5 and 8.2mg/L respectively,and the average TIN removal rate was 89.2%.In order to couple domestic sewage with high NO_(3)^(-)-N content,providing an effective way to remove nitrogen from wastewater simultaneously.

关 键 词：生活污水 硝酸盐废水 内源反硝化 半短程硝化 厌氧氨氧化 

分 类 号：X703.1[环境科学与工程—环境工程]