摘要
为研究泵站放江污染控制技术效果,在嘉定区某空间受限雨水泵站内布置一套200m^(3)/h的一体化高效混凝沉淀设备,开展了干式/湿式启动试验、不同降雨强度及流量冲击负荷工况试验,探讨了其动态响应时间及对SS、TP等污染物的去除效果、运行成本。结果表明:一体化设备在干式/湿式启动模式下分别于30min和20min内实现稳定运行,能满足泵站放江突发性、间歇性特征下的快速启用;小雨、中雨及大雨工况下对SS、TP的最高去除率分别达88%和87%,且在1.3倍设计流量(260m^(3)/h)冲击下仍可维持出水SS≤20mg/L、TP≤0.3mg/L;设备运行成本为0.46元/m^(3),设备对COD_(Cr)与NH_(3)-N去除率仅50%~60%和10%~20%,建议一体化设备耦合调蓄池应用,并研发快速除氨氮设备。研究验证了空间受限场景下一体化设备的高效抗冲击能力,为城市泵站放江污染治理提供了可复制的工程范式。
To study the technical effectiveness of pollution control for the discharge from pumping stations into rivers,a set of integrated high-efficiency coagulation and sedimentation equipment with a capacity of 200 m^(3)/h was installed in a pumping station with limited space in Jiading District.Through dry/wet start-up tests,varying rainfall intensity scenarios and overload flow rate experiments,the system's pollutant removal efficiency on pollutants such as SS and TP and economic feasibility were systematically evaluated.Results indicated that the system achieved stable operation within 30 min(dry start-up)and 20 min(wet start-up),demonstrating adaptability to the sudden and intermittent nature of pump station discharge.Under light,moderate,and heavy rainfall conditions,maximum removal rates of SS and TP reached 88%and 87%,respectively,with effluent concentrations consistently maintained at SS≤20 mg/L and TP≤0.3 mg/L even under 1.3 times the design flow rate shock(260 m^(3)/h)The operational cost was CNY 0.46/m^(3),and COD_(Cr)and NH_(3)-N removal rates remained 50%-60%and 10%-20%,respectively.Recommendations include combined application of integrated equipment and storage tanks and developing rapid ammonia nitrogen removal equipment.This study validates the high-efficiency anti-shock capabilities of the integrated system in space-constrained scenarios,ffering a replicable engineering paradigm for urban stormwater pump station pollution control.
作者
黄志金
HUANG Zhi-jin(Shanghai Hongbo Engineering Consulting&Management Co.,Ltd.,Shanghai 201707,China;Engineering Research Center on River-lake Ecological Restoration of Shanghai Water Authority,Shanghai 201707,China)
出处
《四川环境》
2025年第5期173-178,共6页
Sichuan Environment
基金
2023年度东方英才计划拔尖项目:城市雨水泵站排水污染韧性防控能力提升研究
上海市科研计划项目(21DZ1202605)。
关键词
泵站排放污染
一体化高效混凝沉淀设备
抗冲击负荷
动态响应
空间受限场景
Pumping station discharge pllution
integrated high-efficiency coagulation-sedimentation equipment
resistance to impact load
dynamic response
space-constrained scenario
