摘要
建立了混流式管网系统与受纳河道的耦合模型分析管网混接对河道水质造成的影响,以运营达标为目标研究了管网系统的运营风险,对风险区域的末端排口提出了针对性的治理措施。结果表明,研究区管网混流对河道水质影响相对较小,但对管网自身污染影响较大,需优先排查区域占流域面积的45.0%,主要集中在新城区;综合考虑节点积水、管线承压、河水倒灌及管网混接等管网运营风险,运营时需重点关注的区域面积占比为31.6%;在新城区排查筛选131个重点排口,根据排口特点提出防倒灌、末端截污提升、溢流污染处理、生态强化等措施,4种措施工程占比分别为16.8%、15.3%、45.8%、22.1%。
A coupled model for simulation of the interaction between incorrect and illegal connected pipe networks and receiving water bodies was established,and an analysis was conducted for assessing the impact of illicit discharges on receiving water quality,and specific end-of-pipe treatment practices were proposed for the key outfalls in identified high-risk areas.The results indicated that sewages from incorrect and illegal connections had relatively low impact on river water quality,but higher impact on the water quality in the pipe network,with 45.0%of the preferential watershed area needing corrections,mainly in the new urban areas.Considering the operational risks of pipe networks,such as node waterlogging,conduit surcharge,river water recharge,and incorrect and illegal pipe connection,31.6%of the watershed area was identified as the high-risk area where 131 outfalls were identified as the key outfalls.Based on the characteristics of the key outfalls,four treatment practices,such as prevention of river water backflow,terminal sewage interception and pumped,overflow pollution treatment,and ecological strengthening measures were set up,which accounted for 16.8%,15.3%,45.8%and 22.1%respectively.
作者
孟莹莹
赵天明
周建
谢芳
MENG Yingying;ZHAO Tianming;ZHOU Jian;XIE Fang(Beijing Enterprises Water Group(China)Investment Limited,Beijing 100102)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2022年第1期123-128,共6页
Environmental Pollution & Control
基金
水体污染控制与治理科技重大专项(No.2017ZX07103-002)
北控水务自主立项课(No.ZZLX-2020-01)。
关键词
管网河道耦合
暴雨洪水管理模型
MIKE
11
运营风险
治理措施
coupling of pipe network and receiving water
storm water management model
MIKE 11
operation risk
control measures
