Stddy On Mid-and-long Time Optimal Operation Technology Of Municipal Water Supply

The optimal operation of municipal water supply is an enormous and complex system. Taking Xinzhou city as the case, the paper analyzes the city's actual situation of water supply, available water sources and their amount, distribution and development. It also calculates the mid and long term needed water amount and insufficient water amount in the city. Taking the natural, commercial and life material properties and environmental function of water sources into full consideration, taking the satisfaction of the needed amount of the city and the balance and the largest capacity of every water source as the prerequisite, the paper aims at the mid and long term water supply sources (north water sources region, Douluo water sources region, Shuiquanwan water sources region) and the lest spending on the investment and operation of the self-equipped wells ; through the determination of decision variables, a model of economic management for the city's water supply is established, witch carries out the mid and long term optimal operation of water supply for the city. Themodel is solved by use of the linear programming.The results indicate that the best mid term (2005) program is: the present situation should remain at the north water sources region, the exploitation amount of which is 20000 m3/d; the self-equipped well exploitation should be controlled within 24600 m3/d; in Douluo region, the exploitation of middle level water should be 25000 m3/d; the deep level water, 6700-8500 m3/d. Shuiquanwan diversion works shall be finished before 2010 by stages, the diversion amount of which shall be 71400 m3/d, and at least 26800 m3/d at the earlier stage. The water management factory in the north of the city and the self-equipped wells will be eliminated gradually.The optimized scheme is of social, economic and environmental benefits, which can be the reference for the development plan of Xinzhou city. The optimal municipal water supply operation techniques in the paper also possess value of reference for the mid and long term water supply in the similar cities in the north of China.