杭州市萧山工业区给水工程设计

济南大学毕业设计

摘要

在经济与高科技高速发展的今天，水处理行业也飞速发展，虽然给水处理技术日新月异，但是传统的给水处理技术仍然在给水行业起重要的作用。本设计的主要任务是为杭州市萧山工业区进行给水工程初步设计，取水水源地是清水河，设计人口数为26万人，设计年限按10年考虑。经过对清水河水质进行综合分析、多种净水工艺方案比较、净水工程经济分析最终确定该工程的设计方案：取水工程采用合建式岸边取水工程；净水工艺采用传统的处理工艺（混凝—沉淀—过滤-—消毒—清水池—二级泵站—市政管网）；管网为环状网布置形式。最后通过技术经济分析和制水成本分析，确定了该工程的单位制水成本为0.58元/m3。

关键词：取水工程；净水工艺；管网布置；制水成本

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济南大学毕业设计

Abstract

With the rapid development of the economy and today's high-tech water treatment,water treatment industry is also developing rapidly, although water treatment technology becomes ever-changing, but the traditional water treatment technology still plays an important role in the water supply industry.The main task of the design is carried out for the preliminary design of Hangzhou Xiaoshan industrial area water supply project, the water sources is Qingshui River, the design population of 26 million people, consider the design life of 10 years. Through a a comprehensive analysis of the water quality of the river，a variety of water purification process scheme comparison and water purification project economic analysis ，we determine the final design of the project: intake project use in building engineering formula; water purification process using conventional treatment technology (coagulation — sedimentation —filtration — disinfection — clean water tank—secondary pumping station — municipal network); pipe arranged in the form of a ring network.Finally,we make the technical - economic analysis and water cost analysis and determine the cost of water is 0.58 yuan / m3.

Keywords:Intake Project; Water purification process; Water distribution arrangement；The cost of water

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济南大学毕业设计

目录

摘要................................................................................................................................. I Abstract .......................................................................................................................... II 目录............................................................................................................................... III 1前言.........................................................................................................................- 8 -

1.1设计概述......................................................................................................- 8 - 1.2设计内容......................................................................................................- 8 - 1.3设计资料......................................................................................................- 9 -

1.3.1城市总体布置图...............................................................................- 9 - 1.3.2用水资料...........................................................................................- 9 - 1.3.3地形地貌........................................................................................ - 10 - 1.3.4工程地质及水文资源.................................................................... - 10 - 1.3.5气象................................................................................................ - 11 - 1.3.6河流水文及水质资料.................................................................... - 11 - 1.3.7其它资料........................................................................................ - 11 -

2水量计算.............................................................................................................. - 12 -

2.1居民最高日生活用水量Q1 ..................................................................... - 12 - 2.2工业企业生活用水和淋浴用水Q2 ......................................................... - 12 - 2.3工业企业生活用水Q3 ............................................................................. - 12 - 2.4浇洒道路及绿化用水Q4 ......................................................................... - 13 - 2.5消防用水量Q5 ......................................................................................... - 13 - 2.6设计年限内城市最高日用水量............................................................... - 13 - 2.7最高日最高时设计水量Qh ..................................................................... - 13 - 2.8最高日平均时流量Qh’ ............................................................................ - 13 - 3管网水力计算...................................................................................................... - 14 -

3.1管网定线................................................................................................... - 14 - 3.2比流量计算............................................................................................... - 15 - 3.3沿线流量计算........................................................................................... - 15 - 3.4管网平差................................................................................................... - 16 -

3.4.1最大用水量管网平差.................................................................... - 16 - 3.4.2事故校核平差................................................................................ - 18 - 3.4.3消防校核平差................................................................................ - 21 -

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济南大学毕业设计

4取水工程设计...................................................................................................... - 24 -

4.1设计取水量Q取 ........................................................................................ - 24 - 4.2格栅及进水孔设计................................................................................... - 24 - 4.3格网及进水孔........................................................................................... - 24 - 4.4排泥及冲洗............................................................................................... - 25 - 4.5集水间设计............................................................................................... - 25 - 4.6取水泵站设计........................................................................................... - 25 -

4.6.1水泵流量和扬程估算.................................................................... - 25 - 4.6.2初选水泵........................................................................................ - 26 - 4.6.3吸水管路与压水管路计算............................................................ - 26 - 4.6.4机组及管道布置............................................................................ - 26 - 4.6.5吸水管路及压水管路水头损失计算............................................ - 27 - 4.6.6泵房平面布置................................................................................ - 28 - 4.6.7水泵安装高度及泵房高度计算.................................................... - 28 - 4.6.8泵房辅助设备................................................................................ - 29 -

5净水厂设计.......................................................................................................... - 31 -

5.1设计规模和水处理工艺的确定............................................................... - 31 -

5.1.1设计规模........................................................................................ - 31 - 5.1.2处理工艺确定................................................................................ - 31 - 5.2折板絮凝池设计....................................................................................... - 31 -

5.2.1第一段絮凝区................................................................................ - 31 - 5.2.2第二段絮凝区................................................................................ - 33 - 5.2.3第三段絮凝区................................................................................ - 35 - 5.2.4各絮凝段的主要指标.................................................................... - 35 - 5.2.5絮凝池排泥.................................................................................... - 36 - 5.2.6絮凝池尺寸.................................................................................... - 36 - 5.3平流沉淀池设计....................................................................................... - 36 -

5.3.1设计流量........................................................................................ - 36 - 5.3.2平面尺寸设计................................................................................ - 36 - 5.3.3池体校核........................................................................................ - 37 - 5.3.4水流稳定性校核............................................................................ - 37 - 5.3.5进出水系统设计............................................................................ - 37 - 5.4V型滤池设计 ............................................................................................ - 38 -

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济南大学毕业设计

5.4.1已知条件........................................................................................ - 38 - 5.4.2滤池尺寸........................................................................................ - 38 - 5.4.3进水及布水系统............................................................................ - 39 - 5.4.4配气配水系统设计........................................................................ - 41 - 5.4.5滤池管渠设计................................................................................ - 42 - 5.4.6反冲洗泵房设计............................................................................ - 42 - 5.4.7反冲洗空气泵房设计.................................................................... - 43 - 5.5清水池设计............................................................................................... - 44 -

5.5.1清水池容积及平面尺寸................................................................ - 44 - 5.5.2管道布置........................................................................................ - 46 - 5.5.3清水池布置.................................................................................... - 46 - 5.6加药间和加氯间设计............................................................................... - 47 -

5.6.1加药间设计.................................................................................... - 47 - 5.6.2加氯间设计.................................................................................... - 47 - 5.7污泥处理................................................................................................... - 48 -

5.7.1调节池............................................................................................ - 48 - 5.7.2浓缩池............................................................................................ - 49 - 5.7.3贮泥池............................................................................................ - 50 - 5.7.4脱水机房........................................................................................ - 50 -

6二级泵站设计...................................................................................................... - 51 -

6.1水泵的确定............................................................................................... - 51 -

6.1.1设计流量........................................................................................ - 51 - 6.1.2设计扬程估算................................................................................ - 51 - 6.1.3选水泵............................................................................................ - 51 - 6.1.4机组布置........................................................................................ - 52 - 6.2吸水管路与压水管路计算....................................................................... - 52 -

6.2.1泵房管路布置................................................................................ - 52 - 6.2.2管径计算........................................................................................ - 52 - 6.2.3管道附件........................................................................................ - 53 - 6.3泵房机器间布置....................................................................................... - 53 -

6.3.1机器间长度.................................................................................... - 53 - 6.3.2机器间宽度.................................................................................... - 53 - 6.4吸水井设计............................................................................................... - 54 -

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