缺氧/好氧工艺同步去除碳、氮、硫的研究  

Simultaneous Removal of Carbon,Nitrogen and Sulfur with Anoxic /Oxic Process

作　　者：李平[1] 蓝永辉[1] 吴锦华[1] 朱能武[1] 吴平霄[1] 王向德[1] 

机构地区：[1]华南理工大学环境科学与工程学院工业聚集区污染控制与生态修复教育部重点实验室,广东广州510006

出　　处：《中国给水排水》2013年第11期64-67,72,共5页China Water & Wastewater

基　　金：广东省教育部产学研给合项目(2012B091100146);广东省科技计划项目(2009A080303014);广州市科技计划项目(2012Y2-00005)

摘　　要：采用A/O(缺氧/好氧)工艺处理同时含有氨氮、有机物和硫化物的废水,维持进水NH+4-N浓度不变而改变COD、S2-浓度及回流比,研究S/N、C/N值(均为质量比)及回流比对单质硫(S0)转化率及碳、氮去除率的影响。当回流比为3、进水不含S2-及C/N值≥4时,能保证系统稳定运行及对碳和氮的高效去除;进水含硫且C/N值为4时,S0转化率在S/N值为3时取得最大值(56.71%),对应的COD、NO-3-N(缺氧池)、NH+4-N去除率分别为93.26%、94.29%和93.17%;当初始S/N值为3时,S0转化率在C/N值为2.5时取得最大值(73.53%),对应的COD、NO-3-N(缺氧池)、NH+4-N去除率分别为94.79%、93.61%和92.37%。同时去除碳、氮、硫的最优回流比为3。Anoxic/oxic （A/O） process was applied for the treatment of wastewater containing am monia nitrogen, organic matter and sulfide. The effects of S/N ratio, C/N ratio and reflux ratio on the conversion rate of elemental sulfur as well as the removal rates of carbon and nitrogen were investigated. In all cases, the NH4＋ -N concentration was maintained at a constant value. When the reflux ratio was 3, the influent did not contain sulfur, and the C/N ratio was greater than or equal to 4, the system could operate stably and remove carbon and nitrogen effectively. When the influent contained sulfur, and C/N ratio was 4, the elemental sulfur conversion achieved the maximum rate （56.71%） at a S/N ratio of 3, and the removal rates of COD, NO3- -N （anoxic process） and NH4＋ -N were 93.26% , 94.29% and 93.17% , respectively. When the initial S/N ratio was 3, the elemental sulfur conversion achieved the maximum rate （73.53%） at a C/N ratio of 2.5, and the removal rates of COD, NO3 - N （anoxic process） and NH4＋ - N were 94.79% , 93.61% and 92.37% , respectively. The optimum reflux ratiowas 3 for simultaneous removal of carbon, nitrogen and sulfide.

关 键 词：A O工艺 硫化物 碳 氮 硫同步去除 单质硫 回流比 

分 类 号：X703[环境科学与工程—环境工程]