基于污水处理厂提标改造需求的难降解工业废水处理工艺改进——以湖南省某城镇污水处理厂为例  

Improved process for refractory industrial wastewater treatment to fulfill the upgrading and reconstruction requirements of municipal wastewater treatment plants(WWTPs):A case study of a municipal WWTP in Hunan Province

作　　者：王瑞霖 张洪良 张功良 刘芮杉 张闯 WANG Ruilin;ZHANG Hongliang;ZHANG Gongliang;LIU Ruishan;ZHANG Chuang(Beijing Capital Eco-Environment Protection Group Co.,Ltd.,Beijing 100044,China;Capital Aihua(Tianjin)Municipal and Environmental Engineering Co.,Ltd.,Tianjin 300060,China;Beijing Mercury Environment Co.,Ltd.,Beijing 101599,China)

机构地区：[1]北京首创生态环保集团股份有限公司,北京100044 [2]首创爱华(天津)市政环境工程有限公司,天津300060 [3]北京水星环境有限公司,北京101599

出　　处：《环境工程学报》2021年第11期3781-3788,共8页Chinese Journal of Environmental Engineering

摘　　要：以湖南省某城镇污水处理厂一期1.0×10^(4)m^(3)·d^(-1)提标改造工程项目为案例,针对其进水中工业废水占比高(达80%)、污染物浓度波动大、难降解有机物含量高等特点,在原"水解酸化池+AAO+高效沉淀池+纤维转盘滤池"工艺的基础上,通过现场中试实验,分析了以"臭氧催化氧化+生物活性炭滤池"(O_(3)-BAC)作为提标改造主要工艺的可行性,并设计了工程案例的主要构筑物参数。该项目的实施能够补齐原工艺对难降解有机物削减能力不足的短板,执行排放标准由原一级A提高至《湖南省城镇污水处理厂主要水污染物排放标准》(DB 43/T1546-2018)二级标准。项目的建设投资为1051.4元·m^(-3),直接运行成本0.67元·m^(-3),每年较原工艺可多削减以COD计的有机物36.5 t·a^(-1),每年多削减NH_(3)-N排放量7.3 t·a^(-1)。该工程案例可为接纳高比例工业废水的城镇污水处理厂的提标改造项目提供参考。The first-phase scale of upgrading project in a municipal wastewater treatment plant(WWTP)in Hunan is 1.0×10^(4)m^(3)·d^(-1) and the case study was based on this project.Considering the high proportion of industrial wastewater in the influent(up to 80%),fluctuation in pollutants concentration and high contents of refractory organic matters,feasibility of the advanced treatment process with O_(3)-BAC was evaluated by the filed test based on the process of“hydrolysis-acidification tank+two-stage A/O+high-efficiency sedimentation tank+cloth-media filtration”.With implementation of the upgrading project,it could address the drawback of insufficient reduction capacity of refractory organic matter in the original process,and raise the effluent discharge standard from the class A to secondary standard of Discharge Standard of Major Water Pollutants for Municipal Wastewater Treatment Plant in Hunan(DB 43/T 1546-2018).The capital cost of the upgrading project was1051.4 yuan per m^(3) of water,and the direct operation cost was 0.67 yuan per m^(3) of water,it could reduce36.5 t·a^(-1) COD and 7.3 t·a^(-1)NH_(3)-N more than the original process annually.The upgrading of this WWTP would effectively improve the surrounding ecological environment and provide design reference in the related projects which contained refractory COD.

关 键 词：难降解工业废水 污水处理厂 提标改造 臭氧-生物活性炭 

分 类 号：X703.1[环境科学与工程—环境工程]