农药污染场地修复过程中的废水处理工程设计  

Design of Wastewater Treatment Project in Remediation Process of Pesticide Contaminated Site

作　　者：张磊[1,2] 李新天 于季红 许丹宇 单连斌 魏春飞[1] 蒋帅[1] ZHANG Lei;LI Xin-tian;YU Ji-hong;XU Dan-yu;SHAN Lian-bin;WEI Chun-fei;JIANG Shuai(Shenyang Academy of Erwironmental Sciences,Shenyang 110167,China;Tianjin Academy of Eco-Environmental Sciences,Tianjin 300191,China;Office of Infrastructure Construction,Qilu University of Technology,Jinan 250353,China;Shenyang Water Affairs and Administative Law Enforcement Center,Shenyang 110000,China)

机构地区：[1]沈阳环境科学研究院,辽宁沈阳110167 [2]天津市生态环境科学研究院,天津300191 [3]齐鲁工业大学基建处,山东济南250353 [4]沈阳市水务事务服务与行政执法中心,辽宁沈阳110000

出　　处：《中国给水排水》2021年第10期95-98,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2018ZX07601-001);天津市“131”创新型人才团队项目(201928);环境微生物四川省重点实验室开放研究基金资助项目(KLCAS-2020-2)。

摘　　要：场地修复在我国处于高速发展阶段,然而目前对修复过程中的废水处理工艺研究较少。某农药污染场地修复采用异位修复技术,施工过程产生的废水成分复杂,水质差异大。根据不同污染地块的水质特点,对废水进行分质收集处理。高浓度废水采用混凝沉淀+Fenton氧化工艺预处理后,与低浓度废水混合。混合后的废水利用水解酸化+接触氧化工艺进行处理。工程设计处理规模为600m^(3)/d。运行结果表明,工艺能够有效去除废水中的有机物、氨氮、总磷、苯系物等污染物,出水水质可稳定达到纳管要求,直接运行费用为8.52元/m^(3)。Remediation of contaminated site is in rapidly developing stage in China.However,available wastewater treatment technology in the remediation process was rarely reported.Ex-site remediation technologies were applied in the remediation of a pesticide contaminated site,and the wastewater produced during the construction process was complicated and the water quality varied greatly.According to the characteristics of wastewater from different polluted sites,the wastewater was collected and treated separately.The high-concentration wastewater was pretreated by a combined process of coagulation precipitation and Fenton oxidation,and then mixed with low-concentration wastewater.The mixed wastewater was eventually treated by hydrolytic acidification and contact oxidation.The designed treatment capacity of the project was 600 m^(3)/d.The operational results showed that the combined process could effectively remove pollutants such as organic pollutants,ammonia nitrogen,total phosphorus and benzene series in the wastewater.The effluent water quality could always meet the requirements for wastewater discharge into sewers,and the direct cost was 8.52 yuan/m^(3).

关 键 词：污染场地 二次污染防治 FENTON氧化 

分 类 号：TU992.3[建筑科学—市政工程]