南京市外秦淮河水质模拟及引调水效果  

Water quality simulation and water diversion effect analysis of external Qinhuai River in Nanjing

作　　者：童朝锋[1,2] 岳亮亮[2] 郝嘉凌[2] 邵宇阳[2] 严以新[2] 刘丰阳[2] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]河海大学港口海岸与近海工程学院,江苏南京210098

出　　处：《水资源保护》2012年第6期49-54,共6页Water Resources Protection

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07317-007-05);水文水资源与水利工程科学国家重点实验室基本科研业务费自主研究项目(2010585312);河海大学中央高校基本科研业务费项目(2009B09614)

摘　　要：为研究南京市外秦淮河不同引调水方式对秦淮河水质变化的影响并评估调水效果,建立了外秦淮河一维河网水动力和水质模型,模拟不同时期不同水源补给,包括从秦淮新河闸抽引长江水和石臼湖引水,以及在不同闸控系统运行调控方式下,外秦淮河水质的相应变化。结果表明,不同引调水方案条件下,只要满足引水水量,可以显著提高外秦淮河的水质,部分河段水质甚至可以提高1～2个等级。枯季从秦淮新河闸引水工况为50 m3/s时,外秦淮河水质COD可达Ⅳ类水,NH3-N达到Ⅴ类水;汛期从石臼湖引水工况为60 m3/s时,外秦淮河水质COD可达Ⅲ类,NH3-N达到Ⅴ类水标准。研究结论可为南京市外秦淮河环境整治调水调度运行提供参考依据。In order to study the influences of water diversion from the external Qinhuai River in Nanjing on the water quality of the Qinhuai River and to evaluate the effect of water diversion,a one-dimensional hydrodynamic and water quality river network model was developed.This model was used to simulate the water quality in the external Qinhuai River during different periods by different means of water diversion from multiple water sources,which include the Yangtze River and Shijiu Lake,and the variation of water quality using different brake control systems.The results show that,in different water diversion schemes,the water quality in the external Qinhuai River can be improved distinctly so long as enough water from the two water sources can be transferred into the external Qinhuai River,and the water quality in parts of the river can even be improved by one or two grades.During the dry season,the COD and NH3-N concentrations will meet grade IV and grade V standards,respectively,after 50 m3/s of flow is pumped from the Yangtze River.During the flood season,the COD and NH3-N concentrations will meet grade III and grade V standards,respectively,after 60 m3/s of flow is diverted from Shijiu Lake.These research results can provide references for integrated environmental regulation and operation of water diversion of the external Qinhuai River.

关 键 词：引调水 水质模型 调水方案 外秦淮河 南京市 

分 类 号：X522[环境科学与工程—环境工程]