引江入湖修复城市内湖方案的初步探索

文章采用引水换水方案,通过对湖北黄石磁湖水和长江水的水质监测,在实验室条件下,采用静态浸泡实验,模拟换水工程,测定水质基本指标的变化情况,探讨了引江入湖修复城市内湖生态环境方案的可行性。结论认为:采用江水湖水比例为1.5∶1,秋冬季节引水较为适宜;考虑磁湖内源污染严重,单纯的引水对湖水水质改善难以发挥最大的环境和经济效益,可以采取有效的内源污染治理方案和引水方案并重对磁湖进行生态修复。

A Proposal of Diverting Water from Yangtze River into Cihu Lake for Rehabilitation

To simulate the water change proposal and understand the variation of basic indicators of water quality,static immersion experiment was done to investigate the feasibility of the plan of diverting water from Yangtze River into Cihu Lake,Huangshi,Hubei Province on the basis of water quality monitoring of the Lake and the River. Results showed that under the fall and winter season,the ratio of 1.5∶1 was suitable for diverting water from the Yangtze River to the Lake. A simple diversion of river water to improve the environment of lakes was not enough for the maximum efficiency and investment returns due to a serious inner pollution of the Lake. Thus a new plan was made combining a strict control of inner pollution in the Lake with water diverting plan to a well balanced ecological restoration.