长江口某电厂温排水扩散影响分析及对策探讨  

Influential analysis of thermal discharge diffusion of a power plant in Changjiang estuary and countermeasures

作　　者：邓敏慧[1] 刘晓婉[2] 夏玉强[2] 顾立群[1] 

机构地区：[1]宝山钢铁股份有限公司,上海200941 [2]长江水利委员会长江科学院,湖北武汉430010

出　　处：《人民长江》2015年第15期41-45,73,共6页Yangtze River

基　　金：国家自然科学青年基金资助项目(41302205)

摘　　要：水温是影响水域生态系统健康的重要因子,以长江口某电厂温排水为例,采用MIKE21模型对不同水文条件下电厂温排水扩散影响进行数值模拟。模拟结果显示:电厂温排水温升扩散呈现出高温升影响范围小、低温升影响较大的规律;温升影响面积从大到小依次为冬季小潮、夏季大潮、冬季大潮;涨潮时期排水口温升对上游影响较大,而落潮过程中温升向下游扩散,影响范围较涨潮更大。研究成果对电厂管理及长江口海域生态系统健康的保护具有重要的参考意义。The water temperature is a vital factor to the health of aquatic ecosystems. Taking a power plant located in Yangtze River estuary as an example, we simulate thermal discharge diffusion under different hydrological conditions by using MIKE21 model. The analysis results show that the influence of high temperature rise is small while the impact of low temperature rise is large. The rank from large to small of influenced area is winter neap, summer spring-tide and winter spring-tide. And the temperature rise at the discharge outlet has greater impact on the upstream during high tide, while in ebb tide, the temperature rise impact scope to the downstream is more large, so the influenced area becomes larger as well. The results are helpful to pro-tecting the health of ecosystem as well as the regulation of power plants in Yangtze River estuary.

关 键 词：温排水扩散 扩散范围 应对措施 长江口 

分 类 号：X171[环境科学与工程—环境科学]