合肥市杏花排水系统雨水调蓄池池型方案的探讨  

Types of Detention Tank for Xinghua Drainage System in Hefei City

作　　者：沈军[1] 李田[1] 钱静[2] 朋四海[1] 钱立鹏[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092 [2]合肥市排水管理办公室,安徽合肥230001

出　　处：《中国给水排水》2012年第17期40-43,48,共5页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07316-001;2009ZX07316-005)

摘　　要：通过对合肥市杏花排水系统雨天溢流水质、水量的调查,掌握了系统雨天溢流的初期效应和颗粒物沉降性能,在此基础上分别采用初期效应分析法和平流式沉淀池评价方法估算了存储池和存储-沉淀池在6 mm调蓄径流深度下对排水系统溢流污染的控制效率。结果表明,杏花排水系统雨天溢流初期效应微弱,SS、COD的b参数年平均值分别为0.982、0.905,溢流颗粒物具有良好的沉降性能,平均沉速中值为0.191 cm/s;存储池对SS、COD的年控制率分别为52.6%、55.4%,而存储-沉淀池对SS、COD的年控制率分别为72.7%、64.4%,存储-沉淀池的控制效果更好,因此建议杏花排水系统调蓄池规划方案采用存储-沉淀池。The quality and quantity of CSO during rainfall from Xinghua drainage system in Hefei City were investigated to analyze first flush effect and solid sedimentation characteristics. The control efficiencies of overflow pollution from storage tank and storage-sedimentation tank at 6 mm runoff depth were estimated with first flush effect analysis and horizontal flow-sedimentation tank method. Annual average values of the b parameter in the first flush effect for SS and COD were 0. 982 and 0. 905 respectively ; the mid-value of solid settling velocity was 0. 191 cm/s. The annual control efficiencies for SS and COD in storage tank were 52.6% and 55.4% respectively, and those in storage-sedimentation tank were 72.7% and 64.4% respectively.

关 键 词：初期效应 沉降性能 存储池 存储-沉淀池 溢流污染控制 

分 类 号：TU992[建筑科学—市政工程]