COD冲击对SBR污水处理效果及污泥特性的影响  

Influence of COD shock on the effect of SBR wastewater treatment and its sludge characteristics

作　　者：曲红[1] 赵乐欣 王宁 聂泽兵 王帆[1] 蒋维卿[1] 边德军[1,2] QU Hong;ZHAO Lexin;WANG Ning;NIE Zebing;WANG Fan;JIANG Weiqing;BIAN Dejun(Jilin Provincial Key Laboratory of Municipal Wastewater Treatment,Changchun Institute of Technology,Changchun 130012,China;Science and Technology Innovation Center for Municipal Wastewater Treatment and Water Quality Protection,Northeast Normal University,Changchun 130117,China)

机构地区：[1]吉林省城市污水处理重点实验室(长春工程学院),吉林长春130012 [2]东北师范大学城市污水处理与水质保护科技创新中心,吉林长春130117

出　　处：《环境保护科学》2022年第5期79-84,共6页Environmental Protection Science

基　　金：国家自然科学基金资助项目(51878067);吉林省科技发展计划项目(202002027JC);吉林省教育厅科学技术项目(JJKH20191272KJ)。

摘　　要：针对我国污水处理厂破坏性水质冲击频发的问题,该研究通过将COD浓度由400 mg/L逐步提至2400 mg/L,探究COD冲击对SBR系统污染物的处理效果及污泥特性的影响。结果表明:当COD浓度为2000 mg/L时,SBR工艺对COD、TN、NH_(4)^(+)-N和TP的去除率分别为98.83%、97.19%、99.33%和99.10%,此时系统的脱氮除磷效果最佳,且污泥沉降性能良好;当COD浓度达到2400 mg/L时,活性污泥的脱氢酶活性(DHA)由5.422 mg/g VSS降至1.412 mg/g VSS,此时多糖(PS)/蛋白质(PN)为1.2,系统发生了污泥膨胀。In view of the frequent problem of destructive water quality shock in sewage treatment plants in China,this study investigated the influence of COD impact on the treatment effect of pollutants in the SBR system and sludge characteristics by gradually increasing the COD concentration from 400 mg/L to 2400 mg/L.The results showed that when the COD concentration was 2000 mg/L,the removing rates of COD,TN,NH_(4)^(+)-N and TP by SBR process were 98.83%,97.19%,99.33%and 99.10%,respectively.The system had the best denitrification and phosphorus removal effect and a good sludge settling performance under this COD concentration.The DHA of the activated sludge decreased from 5.422 mg/g VSS to 1.412 mg/g VSS when the COD concentration increased to 2400 mg/L.The PS/Pn was 1.2,and the sludge bulking occurred in the system.

关 键 词：化学需氧量 SBR工艺 水质冲击 脱氮除磷 污泥特性 

分 类 号：X703[环境科学与工程—环境工程]