基于多目标的小流域污染控制方案及效果——以苏州胥江小流域为例  

Multi-objective based pollution control plan for small basins and effect assessment:A case study of Xujiang small basin in Suzhou City

作　　者：王健健[1] 逄勇[1,2] 朱心悦[2] 徐心彤[2] 

机构地区：[1]河海大学环境学院,江苏南京210098 [2]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098

出　　处：《水资源保护》2013年第4期56-61,67,共7页Water Resources Protection

基　　金：国家自然科学基金(51179053)

摘　　要：在太湖流域大网模型基础上,根据设计水文条件、边界水质以及控制断面水质与其上游概化排污口污染源的响应关系,建立胥江小流域污染物限排总量3级串级模型。计算基于多个控制断面在不同水质目标下的流域污染物限排总量。根据流域污染现状及污染物限排总量,提出包括总量控制措施及末端河道微污染水治理措施在内的污染综合控制方案,对综合控制方案水质改善效果进行评估。结果表明:①现状COD排放量超出限排总量153%、NH3-N超出73%、TP超出236%;②胥江小流域污染综合控制方案实施后,各控制断面水质均能达到目标要求。According to the designed hydrological conditions, boundary water quality, and response relationship between the water quality of the control section and the generalized drain outlet upstream, a model used for calculating the discharge limit of pollutants of the Xujiang small basin was established based on a large-grid model of the Taihu Basin. The discharge limits of pollutants based on multiple control sections with different water quality goals were calculated. On the basis of the pollution status and the discharge limits of pollutants of the basin, an integrated pollution control plan including the measures for controlling the total discharge of the pollutants and treating the rivers that are micro-polluted has been proposed. The effect of this plan in improving the water quality was assessed. The results show （a） that the total discharge amount of COD was 153% more than the discharge limit, and the discharge amounts of NH3-N and TP were, respectively, 73% and 236% more than the discharge limit, and （b） that the water quality of all control sections met the requirements after the plan was carried out.

关 键 词：小流域 多目标 综合污染控制 水质评估 平原河网 

分 类 号：X321[环境科学与工程—环境工程]