水平渗滤系统的污染物去除效果及动力学分析  

Analysis of performance and kinetics of pollutant removal by a horizontal flow infiltration system

作　　者：廖俭霞 黄智[1,2] 高澍 宿程远[1,2] LIAO Jianxia;HUANG Zhi;GAO Shu;SU Chengyuan(School of Environment and Resources,Guangxi Normal University,Guilin 541006,China;Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection(Guangxi Normal University),Ministry of Education,Guilin 541006,China)

机构地区：[1]广西师范大学环境与资源学院,桂林541006 [2]珍稀濒危动植物生态与环境保护教育部重点实验室(广西师范大学),桂林541006

出　　处：《环境工程学报》2024年第2期430-440,共11页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(52060003)。

摘　　要：基于人工快渗(CRIS)和水平潜流人工湿地(HSSFCWs)构建了水平流人工渗滤系统(HFCIS),研究了该系统对耗氧有机物(以COD计)、氨氮(NH4+-N)的沿程去除情况和污染物在系统内的垂向分布情况,并进行了动力学分析。结果表明,在水力负荷为0.083 m·d^(-1)、进水耗氧有机物(以COD计)浓度为220~630 mg·L^(-1)、NH_(4)^(+)-N质量浓度为13~47 mg·L^(-1)时,COD、NH_(4)^(+)-N的去除率分别为88.6%和91.9%以上。在水力负荷为0.25 m·d^(-1)的条件下,进水耗氧有机物(以COD计)和NH_(4)^(+)-N质量浓度分别为613~690mg·L^(-1)和36~48mg·L^(-1)时,总去除率分别为95.5%和78.2%以上。水平方向沿程污染物质量浓度呈现逐渐衰减的趋势,污染物降解符合一阶动力学模型,去除速率常数在CRIS和HSSFCWs的速率常数范围内并处于较高水平。该HFCI系统填料简单,复氧效果好,污染物去除性能优异,提高了土地利用率,建造位置选择较为灵活,在分散式污水处理中有独特的优势。In this study,a horizontal flow constructed infiltration system(HFCIS)was constructed based on the artificial rapid infiltration(CRIS)and the horizontal subsurface flow constructed wetland(HSSFCWs).The removal of oxygen consuming organic matter(COD)and ammonia nitrogen(NH_(4)^(+)-N)along HFCIS and the vertical distribution of pollutants in HFCIS were studied,as well as the kinetic analysis.The results showed that at the hydraulic load of 0.083 m·d^(-1),the influent oxygen consuming organic matter(COD)concentration of 220~630 mg·L^(-1),and the influent NH_(4)^(+)-N mass concentration of 13~47 mg·L^(-1),the removal rates of COD and NH_(4)^(+)-N were higher than 88.6%and 91.9%,respectively.When the hydraulic loading was 0.25 m·d^(-1),the mass concentrations of influent oxygen consuming organic matter(COD)and NH_(4)^(+)-N were 613-690 mg·L^(-1) and 36-48 mg·L^(-1),the total removal rates were over 95.5%and 78.2%,respectively.The pollutant mass concentration along the horizontal direction showed a gradually decreasing trend.The pollutant degradation accorded with the first-order kinetic model,and the removal rate constant was at a high level in the range of CRIS and HSSFCWs rate constants.HFCI system had a simple filling,a good reoxygenation effect,an excellent pollutant removal performance,improved the land utilization rate with a flexible construction location selection.It has unique advantages in decentralized sewage treatment.

关 键 词：水平渗滤系统 动力学 去除速率常数 分散式污水处理 

分 类 号：X703[环境科学与工程—环境工程]