City Center Water Supply System Planning And Reform Research

The acceleration of urbanization process aggravate the contradiction between water resources supply and demand.The water supply problem has become a restriction factor to the regional economic development that to compile the water supply special plan scientifically is very important. This thesis have mainly completed water source selection, water demand forecasting, plant layout and water network layout of Nanshan Shenzhen area based on the analysis of present problem existing in the water supply system of Nanshan district of Shenzhen city that to provide a scientific foundation for future reconstruction of water supply system in this area. At the same time analyzed the problem come out when compile the <Nanshan district of Shenzhen city water supply special planning(2015 ~ 2030)> and put forward reasonable suggestions.The main contents are as follows:At first, reserch how to predict water demand accurately The water demand forecast was found far more big than the real water demand when compare them two on some district at a certain time which turn out a question that if the water predictor be used in < Shenzhen city planning standards and guidelines > is scientifically. Because of this the water demand forecast for the future 15 years in the<Shenzhen Nanshan district water supply special planning(2015 ~ 2030)> was forecasted by the low and middle index separately,the index is according to classification of land use area index method and the classification of building area index method in the < Shenzhen city planning standards and guidelines >.After this analysis was made to find the problem during the process and put forward some reasonable suggestions.In the second, reserch how to make water plant layout scientificly. Water plant plan for Nanshan district of Shenzhen city was made after analyzing the whole circumstances which include the landform, water resource, present pip networks and municipal utility of this area. Because of the municipal utilities shortage that the water plant layout in this planning can’t put scientificly,as for this the thesis put forward reasonable suggestions. According to the long-term water quality target of Shenzhen city we suggest the water quality in this water supply system plan meet the requirement of <Drinking Water Health Standards>( B5749-2006), some indicators should refer to the<Shenzhen municipal drinking water quality Standards>to perform.In the third, make the water pipe network layout for Nanshan district of Shenzhen city, analysis the key point and the difficulties during the city center water pipe network planning and implementation。Make sure the water main pipe and branch pipe become cyclization, the water network on this area and out of this area interconnection. Use HYSZDQ to analysis the network performance ensure the node demand, velocity distribution, pressure of interconnection point of water network is reasonably.Fourthly, put the reconstruction project into three parts to compile in the future according to the result of water demand forecast and calculate the investment at the same time.