摘 要本设计为华北地区 E2 县县城给水工程设计。该工程设计规模为 30000m3/d，其中净水厂设计规模为 20000 m3/d，配水厂的设计规模为 10000 m3/d。整个工程包括三大部分：取水工程、输配水工程和净水工程。取水工程主要包括地表水和地下水取工程。地表水取水工程的设计内容包括地表取水位置的选择、取水型式的确定及取水泵站的设计；地下水取水工程的设计内容包括取水位置及型式的确定、单井的设计计算及井群的水力平衡计算。输配水工程主要指管网的定线和管网的水力平衡计算。净水工程的设计主要包括配水厂的设计计算和净水厂的设计计算。净水厂的设计是指净水厂的位置选择、水处理工艺流程的确定、处理构筑物的设计计算以及水厂的平面和高程布置。通过技术经济比较，确定净水厂的工艺流程选用方案一： 原水—→管道混合—→机械搅拌澄清池—→普通快滤池—→消毒—→清水池—→管网。关键词：取水工程；输配水工程；净水工程；机械搅拌澄清池；普通快滤池AbstractThe design is water supply project for E2 city with the total volume of 30 thousand cubic meters. Of them, 20 thousand cubic meters are supplied by surface water treatment plant and the rest by ground water proportioning plant.The whole project consists of three parts which is watet diversion project,water arrangement and clarification project and water treatment project.The surface water diversion project consists of the selection of water source location, the form of water diversion and the design of pump station. And so does the ground water diversion project.This paper also demonstrates the detail process of design for each construction or apparatus in the water treatment plant.In this paper, the water power balance of gang of wells system has been completely caculated which help make this paper more accurate.The water allocation and clarification projects are the major parts in this paper. The former contains the arrangement of pipelines, the determination of pipe caliber as well as pump lifts. And the l...
