初期雨水就地调蓄处理工程方案及运行策略  

Engineering Scheme and Operation Solution of On-Site Storage and Disposal for Initial Rainwater

作　　者：蒋明 JIANG Ming(Shanghai Urban Construction Design and Research InstituteCo.,Ltd.,Shanghai200125,China)

机构地区：[1]上海市城市建设设计研究总院<集团>有限公司,上海200125

出　　处：《净水技术》2024年第6期145-152,共8页Water Purification Technology

基　　金：国家重点研发计划:“长江黄河等重点流域水资源与水环境综合治理”重点专项(2021YFC3200700)。

摘　　要：雨水排口出流污染是南方某市“两湖”水质恶化的重要因素之一,通过排水管网改造解决雨污混接污染问题,采用调蓄处理的工程方案解决初期雨水污染及溢流污染问题,初期雨水处理工艺采用“高效沉淀池+曝气生物滤池(BAF)+高效澄清池+转盘滤池”的组合工艺。通过中试试验验证BAF间歇运行的适用性,连续运行工况下,COD_(Cr)、氨氮均能稳定达到Ⅳ类水水质;当间歇运行时,随着间歇期增大,氨氮的去除效果大幅度降低,当间歇期超过4 d后,出水氨氮浓度无法达到地表Ⅳ类水水质。文章提出了初期雨水处理工艺运行维护模式,为类似工程提供借鉴。The pollution caused by the outflow of rainwater is one of the important factors for the deterioration of water quality of"two lakes"in a city.The mixed pollution of rainwater and wastewater is solved through the reconstruction of drainage pipe network,and the initial rainwater pollution and overflow pollution are solved by the engineering scheme of storage treatment.The combined process of"high efficiency sedimentation tank+BAF+high efficiency clarification tank+rotary table filter"is adopted for the initial rainwater treatment process.The applicability of intermittent operation of BAF is verified by pilot test.Under continuous operation conditions,COD_(Cr) and ammonia nitrogen can reach class IV water quality stably.When the intermittent operation,with the increase of intermittent period,the removal effect of ammonia nitrogen is greatly reduced.When the intermittent period exceeds 4 days,the concentration of ammonia nitrogen in the effluent cannot reach the surface water quality.The operation and maintenance mode of initial rainwater treatment process is put forward,which provides reference for similar projects.

关 键 词：初期雨水 就地处理 曝气生物滤池(BAF) 高效澄清池 运行模式 

分 类 号：TU992[建筑科学—市政工程]