组合CRI工艺对印染二级生化出水的深度脱氮效果  

Advanced nitrogen removal performance of secondary biochemical effluent of printing and dyeing wastewater by combined CRI process

作　　者：陈佼 李晓媛 任燕玲 刘欢 刘浩霖 兰伟伟 陆一新[1,2,3] CHEN Jiao;LI Xiaoyuan;REN Yanling;LIU Huan;LIU Haolin;LAN Weiwei;LU Yixin(School of Materials and Environmental Engineering,Chengdu Technological University,Chengdu 611730,China;Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China;Haitian Water Group Co.,Ltd.,Chengdu 610200,China)

机构地区：[1]成都工业学院材料与环境工程学院,四川成都611730 [2]西南交通大学地球科学与环境工程学院,四川成都611756 [3]海天水务集团股份有限公司,四川成都610200

出　　处：《工业水处理》2022年第1期71-76,共6页Industrial Water Treatment

基　　金：国家自然科学基金项目(21705133);四川省科技计划项目(22ZDYF2880,2019YFS0055);四川省环境污染防治重点研发项目(2017SZ0179);国家级大学生创新训练计划项目(202111116026)。

摘　　要：采用好氧+厌氧组合人工快渗(OCRI+ACRI)工艺处理印染二级生化出水,考察了运行过程中氮素污染物的迁移转化规律及脱氮效果。结果表明,组合工艺运行28 d后可成功启动部分亚硝化和厌氧氨氧化,稳定运行期间COD、NH_(4)^(+)-N、TN平均去除率分别为87.2%、99.0%、96.9%,出水浓度均达到《纺织染整工业水污染物排放标准》(GB 4287-2012)的直接排放标准。组合CRI工艺共运行180 d,OCRI反应器内主要发生部分亚硝化,其对COD、NH_(4)^(+)-N、TN的去除率分别为87.3%、60.1%、5.2%。ACRI反应器内主要发生厌氧氨氧化,其对COD、NH_(4)^(+)-N、TN的去除率分别为12.7%、39.9%、94.8%。Aerobiotic and anaerobic combined constructed rapid infiltration(OCRI+ACRI)process was used to treat the secondary biochemical effluent of printing and dyeing wastewater.The migration and transformation rules of nitrogen pollutants and the nitro⁃gen removal performance during the operation were investigated.The results showed that partial nitritation and anammox could be successfully started after 28 days of operation.The average removal rates of COD,NH_(4)^(+)-N and TN were 87.2%,99.0%and 96.9% respectively during the stable operation period.The effluent met the direct emission standard of Discharge Standard of Water Pollut⁃ants for Dyeing and Finishing of Textile Industry(GB 4287-2012).During the 180 days of operation of the combined CRI pro⁃cess,partial nitritation occurred in OCRI reactor,and the removal rates of COD,NH_(4)^(+)-N and TN were 87.3%,60.1% and 5.2%,respectively.Anammox mainly occurred in ACRI reactor,and the removal rates of COD,NH_(4)^(+)-N and TN were 12.7%,39.9%and 94.8%,respectively.

关 键 词：印染废水 深度脱氮 部分亚硝化 厌氧氨氧化 人工快渗 

分 类 号：X703.1[环境科学与工程—环境工程]