Research On The Problem Of Water Quality Management Of Beidagang Reservoir

Beidagang Reservoir is an adjustable one, which has finished eight time diversion works from Yellow River to Tianjin. It has played important role in the past years, but there are some problems in the course of the use of reservoir. One is that water goes salt little by little. The primary factor is that great evaporation function make water enrich, the other is some salt comes out of bottom mud. These make water worse. Water is getting salty more and more. In order to know the reason, we should analyze the quantitative relation of water quality and environment.In the paper, the way of experiments and theory is used in order to reason to physical model and to simulate the releasing experience of bottom mud. The relation of releasing rate of button mud and time, as well as temperature and water deepness, has been founded.Based on analysis of statistical climate date, its water loss may be estimated. According to the result of the experiment and domestic and foreign theory achievement, its water quality model has been founded. It reflects the relation of water pollution concentration and initial concentration, entering and pouring flow, evaporation function, and the releasing of bottom mud.Depending on the last achievement, the plan of dividing the reservoir into two-part function has been found and two kinds of using models have been gotten. Using them grade-3 water quality level can be gotten in main reservoir. In order to reach the aim of the lowest loss water of main reservoir, the best dispatching problem is drawn and come to a conclusion. Based on the research, if water-entering reservoir is good, using the way of united dispatch may get grade-3 water quality lever.