渗坑及沟渠泥水共治的工艺设计及运行效果研究  

Process Design and Operation Effect of Mud-water Treatment in Soak-pit and Ditch

作　　者：顾俊杰 范洪凯 周国峰 苟晓东 苏强 Gu Junjie;Fan Hongkai;Zhou Guofeng;Gou Xiaodong;Su Qiang(Shandong Academy of Environmental Science Co.,Ltd,Jinan 250013,China)

机构地区：[1]山东省环科院环境工程有限公司,山东济南250013

出　　处：《环境科学与管理》2023年第10期74-79,共6页Environmental Science and Management

基　　金：山东省重大科技创新工程(2018YFGH0902)。

摘　　要：针对渗坑和沟渠废水中污染物成分复杂、可生化性较差的问题和底泥中污染物有毒有害、易富集的问题,分别采用“曝气充氧+生物菌剂”原位措施、“水解酸化+曝气调节+絮凝沉淀+SBR”异位治理工艺、“pH调节+化学氧化”原位措施及自主研发专利“底泥重金属污染模块化异位治理方法”进行治理。经治理,废水中挥发酚、TP、COD、BOD5、氨氮的去除率分别为93%、95%、97%、98%、95%,达到《污水综合排放标准》(GB 8978-1996)一级标准,输送回原沟渠。底泥中Zn、萘、苯胺、苯并(a)蒽、苯并(b)荧蒽、苯并(a)芘的去除率分别为75%、0.98%、0.95%、0.94%、0.99%、0.97%,低于《建设用地土壤污染风险筛选指导值》(三次征求意见稿)住宅类用地筛选值要求,送至当地砖厂进行资源化利用。In view of the problems of complex composition and poor biochemistry of pollutants in seepage pits and ditch wastewater,and the problems of toxic and harmful pollutants in the sediment that are easy to be enriched,the in-situ measures of“aeration and oxygenation+biological bacterial agent”,the ex-situ treatment process of“hydrolysis and acidification+aeration+flocculation and sedimentation+SBR”,the in-situ measures of“pH adjustment+chemical oxidation”,and the independently researched and developed patent of“modular ectopic treatment method of heavy metal pollution in sediment”were adopted for the treatment respectively.After treatment,the removal rates of volatile phenol,TP,COD,BOD5 and ammonia nitrogen in the treated wastewater are 93%,95%,97%,98%and 95%,respectively,and reached the first level standard of Comprehensive Sewage Discharge Standard(GB 8978-1996),which was conveyed back to the original ditch.The removal rates of Zn,naphthalene,aniline,benzoanthracene,benzoanthracene(b)fluoranthene and benzoan(a)pyrene in sediment were 75%,0.98%,0.95%,0.94%,0.99%and 0.97%,respectively,lower than the screening value of residential land in the Guidance Value for Screening of Soil Pollution Risk of Construction Land(draft for three times),and they were sent to the local brick factory for resource utilization.

关 键 词：渗坑和沟渠 生物菌剂 SBR 底泥污染模块 资源化利用 

分 类 号：X703[环境科学与工程—环境工程]