复合型人工湿地对污水厂尾水的深度处理效果  

Advanced Treatment Efficiency of Effluent from Wastewater Treatment Plant by Composite Constructed Wetland

作　　者：潘成荣[1,2] 陈建 彭书传[1] 张浏[2] 刁飞 刘璐 刘志爽 柯凡[3] PAN Cheng-rong;CHEN Jian;PENG Shu-chuan;ZHANG Liu;DIAO Fei;LIU Lu;LIU Zhi-shuang;KE Fan(College of Resources and Environmental Engineering,Hefei University of Technology,Hefei 230009,China;Anhui Institute of Environmental Sciences,Hefei 230001,China;State Key Laboratory of Lake and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]合肥工业大学资源与环境工程学院,安徽合肥230009 [2]安徽省环境科学研究院,安徽合肥230001 [3]中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,江苏南京210008 [4]中国科学院大学,北京100049

出　　处：《中国给水排水》2022年第13期111-116,共6页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07603-004)。

摘　　要：采用由微曝气垂直流湿地(UFCW)、水平潜流湿地(HFCW)和沉水植物氧化塘(SOP)组成的复合人工湿地工艺对肥西县中派污水处理厂尾水进行深度处理,在平均水温为28.8℃左右、UFCW单元曝气量为0.3 m^(3)/h且HRT为0.12 d、HFCW单元HRT为1.30 d并投加反硝化缓释碳源、SOP单元HRT为1.60 d的条件下,复合人工湿地系统对TN、TP和SS的去除率较高,分别为82.5%、63.4%和85.3%,SOP单元对脱氮有贡献。系统出水TN、COD和SS平均浓度分别为1.42、22.7和7.1 mg/L,优于《地表水环境质量标准》(GB 3838—2002)的Ⅳ类标准;出水NH_(4)^(+)-N平均浓度为0.2 mg/L,达到GB 3838—2002的Ⅱ类标准;出水TP平均浓度为0.15 mg/L,优于GB 3838—2002的Ⅲ类标准。A composite constructed wetland process consisting of micro-aerated vertical flow wetland,horizontal subsurface flow wetland and submerged plant oxidation pond was applied to advanced treatment of the effluent from Zhongpai Wastewater Treatment Plant in Feixi County.When water temperature was 28.8℃,aeration rate and hydraulic retention time(HRT)of the micro-aerated vertical flow wetland were 0.3 m^(3)/h and 0.12 d,HRT of the horizontal subsurface flow wetland with dosage of slow release carbon source was 1.30 d and HRT of the submerged plant oxidation pond was 1.60 d,the composite constructed wetland system had higher removal efficiencies of TN,TP and SS,which were 82.5%,63.4%and 85.3%,respectively,and the submerged plant oxidation pond contributed to nitrogen removal.The average TN,COD and SS in effluent were 1.42 mg/L,22.7 mg/L and 7.1 mg/L,respectively,which were better than the classⅣcriteria specified in Environmental Quality Standards for Surface Water(GB 3838-2002).The average NH_(4)^(+)-N in effluent was 0.2 mg/L,which met the classⅡcriteria specified in GB 3838-2002.The average TP in effluent was 0.15 mg/L,which was better than the classⅢcriteria specified in GB 3838-2002.

关 键 词：人工湿地 污水厂尾水 深度处理 脱氮 

分 类 号：TU992[建筑科学—市政工程]