引江灌湖治理东湖污染工程方案初探1

DIVERTING THE YANGTZE RIVER WATER INTO EAST LAKE FOR POLLUTION CONTROL

论述了引江灌湖治理东湖污染工程的方案。提出在长江距沙湖最近的岸边设取水点,引长江水注入沙湖,再灌入东湖。江水与湖水在东湖中充分混合,最终携带部分污染物通过青山港、武丰闸排入长江,从而减轻东湖污染质的总量,降低东湖的污染。建立了引排水流量、引排水周期、每个周期所能降低东湖污染的百分率三者之间的方程式,并以当前东湖超标最严重的总磷(TP)为例来初步确定引、排水流量和总量。

The paper suggests the method for diverting the Yangtze River water into East Lake for pollution control.The extration location is designed at the bank closest to Shahu Lake.The Yangtze River water is first diverted to Shahu lake and then to East Lake.The river water is mixed with lake water in the East Lake before being discharged back into the Yangtze River carrying with it some pollutants through Qinshan Harbor and Wufeng Lock.This will reduce the total pollutant amount and pollution degree of the East Lake.On the other hand,the establishment of the diversion volume and period as well as the equations and reflecting the relationship among them and the decrease percentage in each period allows for the determination of feedwater and drainage.Moreover,the equation is applied by taking the TP in East Lake as an example.