【最新修订版】污水管网和污水处理厂的设计_给排水毕业论文设计

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本科毕业设计说明书

题目：聊城市冠县污水管网和

污水处理厂的设计

院（部）：市政与环境工程学院

专业：给水排水工程

I

摘要

本次设计为聊城市冠县污水管网和污水处理厂的设计。设计人口密度为360cap of wastewater treatment plant & wastewater pipe network for liao cheng city. The population density of this design is 360cap. The whole length of the wastewater pipe network is about46.69 km and the service area of the network is about977.27 showed that the maximal burial depth of the pipe network is 7.88m and the maximal diameter of pipes is DN1300. The reinforced concrete pipes are adopted in this design.

The wastewater treatment plant lies in the southeast of liao cheng guan xian. The disposed scale of wastewater treatment plant is 75000 m3d and its area is about 75364 2

m.According to the demand of nitrogen and phosphorus removal, also the quality of the influent and effluent, A-A-O. The treatment process is as follow: Influen Coarse grid → Pumping grid → Grit chamber → Anaerobic pond →A-A-O → Secon dary sedimentation tank →tertiary wastewater treatment→ Effluent. The quality of the effluent would reach the standardⅠ-A of the《Discharge standard of pollutants for municipal wastewater treatment plant》(GB18918-2002).

Key Words: Wastewater pipe network; Wastewater treatment; A-A-O; nitrogen and phosphrous removal

摘要 ........................................................................................................................................................................ I ABSTRACT............................................................................................................................................................. I 第一章毕业设计任务及要求 ........................................................................................................................... - 1 -

1.1毕业设计任务 (1)

1.2毕业设计原始资料 (1)

第二章聊城市冠县城区排水管网设计 ........................................................................................................... - 3 -

2.1排水管网的规划和布置 (3)

2.1.1 排水管网的规划 ............................................................................................................................ - 3 -

2.1.2 排水管网的布置 .......................................................................................................................... - 3 -

2.1.3 管网定线和敷设 ............................................................................................................................ - 3 -

2.2排水管网的设计流量计算 (5)

2.2.1 污水总设计流量的确定 .............................................................................................................. - 5 -

2.2.2 设计管段及各管段的设计流量的确定 ...................................................................................... - 5 -

2.3污水管网的水力计算 (7)

2.3.1污水管道设计参数 ......................................................................................................................... - 7 -

2.3.2 管道的水力计算 ............................................................................................................................ - 9 -

2.3.3 污水管道的衔接 ........................................................................................................................ - 10 -第三章污水厂设计规模及工艺流程 ............................................................................................................. - 12 -

3.1污水厂厂址的选择以及工艺流程的选择 (12)

3.1.1 污水厂厂址的选择 .................................................................................................................... - 12 -

3.1.2 污水处理流程选择 .................................................................................................................... - 12 -

3.1.3 方案论证 ...................................................................................................................................... - 13 -

3.1.3.1 生物接触氧化方案................................................................................................................................- 13 -

3.1.3.2 A2O方案..............................................................................................................................................- 14 -

3.1.3.3 SBR方案 .............................................................................................................................................- 15 -

3.1.3.4 污水处理方案的技术经济比较 ..........................................................................................................- 15 -

3.2污水厂设计污水水量计算 (16)

3.2.1 污水厂设计水量计算 ................................................................................................................ - 16 -

3.2.2 污水处理程度计算 .................................................................................................................... - 16 -3.3一级处理构筑物的设计及计算.. (17)

3.3.1格栅及污水提升泵房 ................................................................................................................... - 17 -

3.3.1.1中格栅的设计与计算.............................................................................................................................- 19 -

3.3.1.2污水提升泵房设计与计算 .....................................................................................................................- 20 -

3.3.1.3 细格栅的设计与计算............................................................................................................................- 21 -

3.3.2 沉砂池（采用平流沉砂池） ............................................................................................ …… 此处隐藏：17794字，全部文档内容请下载后查看。喜欢就下载吧 ……