电气浮—电化学氧化—人工湿地系统对不同污染负荷下农村黑水的净化效果  

Effect of purification system combined with electrical floatation,electrochemical oxidation and constructed wetland on rural black water with different pollution loads

作　　者：王铁运 郑淑君 王妍[1,2] 刘云根 WANG Tieyun;ZHENG Shujun;WANG Yan;LIU Yungen(College of Ecology and Environment,Southwest Forestry University;Yunnan Key Laboratory of Ecological Environment Evolution and Pollution Control in Mountainous Rural Areas,Kunming,Yunnan 650224,China)

机构地区：[1]西南林业大学生态与环境学院 [2]云南省山地农村生态环境演变与污染治理重点实验室,云南昆明650224

出　　处：《福建农林大学学报（自然科学版）》2023年第4期533-539,共7页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：云南省高原湿地保护修复与生态服务重点实验室开放基金资助项目(202105AG070002);云南省科技计划面上项目(2019FB070、2018FG 001-049)。

摘　　要：以3种污染负荷的农村黑水为研究对象,研究电气浮—电化学氧化—人工湿地系统对不同含量氨氮(NH_(4)^(+)-N)、总氮(TN)、正磷(PO_(4)^(3-)-P)、总磷(TP)和化学需氧量(COD)的净化效果。结果显示:(1)系统对不同污染负荷下农村黑水的净化效果存在显著差异(P<0.05),在ρ(NH_(4)^(+)-N)=27.18 mg·L^(-1)、ρ(TN)=32.48 mg·L^(-1)、ρ(TP)=3.60 mg·L^(-1)、ρ(PO_(4)^(3-)-P)=3.59 mg·L^(-1)、ρ(COD)=95.34 mg·L^(-1)的情况下,系统对农村黑水的净化效果较好,出水TN和COD的质量浓度达到国家一级排放标准;(2)系统对3个污染负荷下黑水中NH_(4)^(+)-N的去除率分别达到80.81%、61.25%和62.02%,对TP的去除率分别达到65.92%、52.49%和55.84%;(3)在ρ(NH_(4)^(+)-N)=60.29 mg·L^(-1)、ρ(TN)=60.69 mg·L^(-1)、ρ(TP)=7.71 mg·L^(-1)、ρ(PO_(4)^(3-)-P)=7.55 mg·L^(-1)、ρ(COD)=196.59 mg·L^(-1)的情况下,系统对PO_(4)^(3-)-P和COD的去除率分别达到52.71%和66.07%。结果表明系统微环境指标、内部基质表面特征和元素含量受到污染负荷的影响,污染负荷对系统处理效率的影响显著。To investigate the effect of purification system combined with electrical floatation,electrochemical oxidation and construc-ted wetland on treating rural black water,water quality indicators,including ammonia nitrogen(NH_(4)^(+)-N),total nitrogen(TN),positive phosphorus(PO_(4)^(3-)-P),total phosphorus(TP)and chemical oxygen demand(COD),were evaluated before and after the purification treatment and under 3 pollution loads.The results showed that the pollutant removal effect of the purification system var-ied significantly among different pollution loads.The system showed good effect on black water with pollution load[ρ(TN)=32.48 mg·L^(-1),ρ(TP)=3.60 mg·L^(-1),ρ(PO_(4)^(3-)-P)=3.59 mg·L^(-1) andρ(COD)=95.34 mg·L^(-1)],and the contents of TN and COD in the effluent met the national first-degree emission standard.The removal rates of NH_(4)^(+)-N for the system reached 80.81%,61.25%and 62.02%under the 3 different pollution loads,and those of TP were 65.92%,52.49%and 55.84%,respectively.Under pollution load[ρ(NH_(4)^(+)-N)=60.29 mg·L^(-1),ρ(TN)=60.69 mg·L^(-1),ρ(TP)=7.71 mg·L^(-1),ρ(PO_(4)^(3-)-P)=7.55 mg·L^(-1) andρ(COD)=196.59 mg·L^(-1)],the removal rates of PO_(4)^(3-)-P and COD arrived at 52.71%and 66.07%,respectively.Pollution load exerted significant influences on microenvironment index as well as the surface characteristics and element content of the internal substrate,and thus the efficiency of the treatment system.

关 键 词：电气浮 电化学氧化 人工湿地 污染负荷 农村黑水 

分 类 号：X703.1[环境科学与工程—环境工程]