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毕业论文关键词： 絮凝池；消毒；净水厂
Process Design of Water Plant in a Suburb
of Shanghai
The total description：Reference for Shanghai suburbs fort town built 100000 m3 / d the process design of the water works for water supply and drainage engineering design content, principle, step and step, according to the original material choosing the correct design, calculate correctly, technology is closely linked, reach, large water plants in the operation ability. To the combination of reasonable water plant layout design needs from the operating production, material handling, and process and so on various aspects to consider.In a city, the water supply system is the lifeblood,and is essential to guarantee the people's life and social development of material basis,and is an important part of urban construction. In the 80 s, chongming tap water is only 40%, most of the rural use well water . Along with the urban construction acceleration, the running water popular rate enhances gradually , the demand of the water plant is becoming more and more big. Spur people to tap water quality safety more and more attention, so I choose to design a process to assess the waterworks inductive himself four years of professional knowledge to consolidate and understanding, laying a solid foundation for future work. Waterworks construction total scale of 100000 m3/d, water plant for water by 5%, temporary not consider the long-term development. Proposed reference to chongming town factory for process design. Most of the waterworks in our country according to domestic and drinking water GB5749-85 standard quality control, but along with the further increase of the economy in our country, the continuous improvement of people's living standard, the corresponding water quality standards will continue to improve, at the same time as the deepening of environmental pollution, the traditional treatment process (coagulation precipitation filtration disinfection) already can not meet the requirement of the treated water, decided to increase of ozone and biological activated carbon technology. So the water treatment process decide on conventional treatment depth.
According to the required water quantity and water quality requirements, the design of structures including Wells, glass steel pipe type static mixer, drug delivery, folded plate flocculation pool and advection sedimentation tank, v-shaped filter, clear water reserviors, chlorine, ozone contact pool, biological activated carbon filter, etc. Reference specification "drinking water health standards" (GB5749-2006), the water quality standard of urban water supply , the surface water environment quality standard ", the town of fort for waterworks water supply project report for water resources argumentation, the water supply and drainage design manual" (vol. 1, 3, 10, etc.), the water supply engineering (fourth edition), the design calculation for water treatment facilities "，" waterway facilities design pointer ".
Folded plate flocculation pool is at a certain flow velocity between the folded plate through the complete structures in the process of flocculation. Advection sedimentation tank is along the horizontal flow sedimentation tank. Flat sedimentation basin is a rectangular pool type, wastewater flow from one end of the pool, pool horizontal flow, flow from the other end of the pool. On the bottom of the pool of inlet water storage bucket, other parts of the bottom slope, storage bucket. Flat sedimentation basin with the impact load and strong ability to adapt to temperature changes, the construction is simple, the advantages of low cost; But large workload of operation, using mechanical dredge, part device and driver are immersed in water, easy to rust, easy corrosion defects; Applicable to high underground water level and poor geological region; Suitable for large, medium and small sewage treatment plant.
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