嘉兴市水环境现状及外来污染物贡献率评价

为了摸清嘉兴市污染物的来源情况,为水环境整治提供科学依据,根据近年来水环境监测数据,评价了该市水环境现状,估算了外来污染量和本地污染量。结果表明:影响嘉兴市水质的主要项目依次是NH3-N,TP和CODMn;外来的污染量占很大的比重,约为50%。建议在积极控制本地排污和增强自身纳污能力的同时,应呼吁和协调周边地区改善水环境。

Status of water environment in Jiaxing City and estimation of contributing rate of external contaminants

Based on the field data of water environment in Jiaxing City in recent years,the present status of water environment was evaluated and the amounts of internal and external contaminants were estimated in order to investigate the pollution sources and provide base for water environment regulation.Results show that main water quality indices include NH_3-N,TP,and COD_(Mn),and the contributing rate of external contaminants is large,which is about 50%.It is suggested that besides the measures to control the native pollution and improve the water pollution carrying capacity,water environment in adjacent regions must be improved.