摘 要
本次设计为山东省济南市沥青区给水工程设计，设计内容主要包括三部分，即取水工程设计、给水管网设计和净水厂设计。根据设计资料，本次只进行二水厂设计，二水厂取水河流为湘江，取水地点位于河流弯道凹岸。根据水位变化情况，采用固定式取水构筑物。又因月平均流量变化较大，故采用岸边式取水构筑物。由于水厂给水管网设计的是本次设计的难点同时也是设计的重点，其计算工作量大，计算过程比较繁琐，所以采用EPA管网平差程序进行计算，大大提高了计算速度和计算结果的精确度。净水厂处理工艺采用常规处理，即“混凝——沉淀——过滤——消毒”。混凝包括混合和絮凝两部分。混合是在静态混合器中投加聚合氯化铝，絮凝设备选用折板絮凝池，选用平流沉淀池进行沉淀，过滤设备采用V型滤池，最后投加液氯进行消毒。经过净水厂中各处理构筑物处理后，出厂水能够达到饮用水要求。
关键词：管网平差，取水工程，净水厂设计
Abstract
The design of jinan in shandong province for asphalt area water supply engineering design, design content mainly includes three parts, namely water treatment engineering, water supply pipe network design and design. According to design data, the only two waterworks design, the second water plant for the xiangjiang river water river, concave bank location is located in river water of corners. According to the water level change, fixed water intake structures. For months, on average, a great changing flow, on the type of the structures. Due to water pipe network design is the key point of design is also the focus of the design, the calculation workload is big, calculation process is complicated, so the calculated, using the EPA network adjustment program has greatly increased the calculation speed and the accuracy of the calculation results. Treatment process using conventional processing, namely "coagulation, precipitation, filtration, disinfection". Coagulation includes both mixing and flocculation. Is mixed in the static mixer with polyaluminium chloride, flocculation choose folded plate flocculation pool equipment, selects the advection sedimentation tank for precipitation, filtration equipment adopts v-shaped filter, adding the liquid chlorine disinfection in the end. After each treatment structures in water treatment works, the effluent can meet the requirements of drinking water.
Keywords: network adjustment, water engineering, water treatment works design
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