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The design is the main task of Jian City Water Works water supply design of the project. The main design elements include : scope of the design, water supply systems, water supply program, the water project design. water purification plant design. Design books from the design data, design specification and design calculations on three components. The water pumping station project using a pressurized-water pipe will be sent to the new water treatment plant program. The program proposed in the town reservoir pressure following the construction of a pumping station, to a pressurized water purification plants, purified by gravity to distribute water to the urban pipe network. Design of the recent scale is 30,000 cubic meters per day, the long-term scale of 50,000 cubic meters per day. at the proposed town reservoir water. The water supply system : → Set source water wells (one pumping station) → tube static mixer →-folded plate flocculation tank → tube settler resistance → ordinary filter Chi → → two-pool pump → distribution network. Selection of basic aluminum chloride as a coagulant, liquid chlorine as the disinfectant. Folded plate flocculation tank reaction time of 20 minutes, tube settler Cheqingshui District 2.50mm/s increased velocity, horizontal-ethylene-propylene copolymer material used hexagonal honeycomb, 0.4mm thickness. Filter ordinary faster speed V=8.0m/h, scouring intensity 14L/s.m2. Irrigation water for 6min the required effluent quality of drinking water standard (2001). The proposed project from the town reservoir water, the reservoir to the proposed site for a water purification plant a natural route that links the bank piled up. Jinhegou cross-strait links relatively flat terrain, most of Piedmont is under alluvial rock less, This aqueduct about 5.2km in length. In the pipe, ductile iron pipe relatively low cost, complete tube, and corrosion resistance, light weight, easy to transport and install, Therefore using ductile iron pipe.