下载文档原格式
本设计污水处理厂综合设计包括15个图纸，十分全面，具体详见报告后附图。
本报告附图全面详细。
图纸内容如下：A2O池，初沉池，幅流式二沉池，隔栅，工艺简单图，工艺流程图（高程图），回转耙式格栅除污机图，平面布置图，污泥浓缩池，厌氧消化池，钟式沉砂池等。
全为CAD制图。
下载后复制放大或打印可看清！题目20000m3/d城市污水处理厂综合设计专业: 环境工程年级: 2005级学号: 3105001286姓名: 莫笑伟指导教师:2008年12 月摘要我国水体污染主要来自两方面，一是工业发展超标排放工业废水，二是城市化中由于城市污水排放和集中处理设施严重缺乏，大量生活污水未经处理直接进入水体造成环境污染。
工业废水近年来经过治理虽有所减少，但城市生活污水有增无减，占水质污染的51%以上。
我国水体污染主要来自两方面，一是工业发展超标排放工业废水，二是城市化中由于城市污水排放和集中处理设施严重缺乏，大量生活污水未经处理直接进入水体造成环境污染。
工业废水近年来经过治理虽有所减少，但城市生活污水有增无减，占水质污染的51%以上。
本设计要求处理水量为20000m3/d的城市生活污水，设计方案针对已运行稳定有效的A2/O活性污泥法工艺处理城市生活污水。
A2O工艺由于不同环境条件，不同功能的微）能生物群落的有机配合，加之厌氧、缺氧条件下，部分不可生物降解的有机物（CODNB被开环或断链，使得N、P、有机碳被同时去除，并提高对COD的去除效果。
它可以同NB－－时完成有机物的去除，硝化脱氮、磷的过量摄取而被去除等功能，脱氮的前提是NH3N应完全硝化，好氧池能完成这一功能，缺氧池则完成脱氮功能。
厌氧池和好氧池联合完成除磷功能。
关键词：城市生活污水，活性污泥，A2/O目录摘要 (III)目录 (IV)第一章设计概述 ······································································- 7 -1设计任务 ······································································- 7 - 2设计原则 ······································································- 7 - 3设计依据 ······································································- 8 - 第二章工艺流程及说明 ·····························································- 8 -1工艺方案分析 ································································- 8 - 2工艺流程 ······································································- 9 - 3流程各结构介绍 ·····························································- 9 -3.1格栅······························································································· - 9 -3.2沉砂池··························································································- 10 -3.3初沉池··························································································- 10 -3.4生物化反应池··············································································- 10 -3.5二沉池··························································································- 12 -3.6浓缩池··························································································- 12 - 第三章构筑物设计计算 ··························································· - 12 -1格栅 ·········································································· - 12 -1.1设计说明······················································································- 12 -1.2设计计算······················································································- 13 -2沉砂池 ······································································· - 16 -2.1设计说明······················································································- 16 - 3初沉池 ······································································· - 17 -3.1设计说明······················································································- 17 -3.2设计计算······················································································- 17 - 4生化池 ······································································· - 19 -4.1设计说明······················································································- 19 -4.2设计计算······················································································- 19 - 5二沉池 ······································································· - 26 -5.1设计说明······················································································- 26 -5.2设计计算······················································································- 26 - 6液氯消毒 ···································································· - 29 -6.1设计说明······················································································- 29 -6.2设计计算······················································································- 29 - 7污泥浓缩池 ································································· - 30 -7.1设计说明······················································································- 30 -7.2设计计算······················································································- 30 -8 污泥消化池 ································································· - 31 -8.1设计说明······················································································- 31 -8.2设计计算······················································································- 32 - 9浓缩污泥提升泵房 ························································ - 38 -9.1设计选型······················································································- 38 -9.2提升泵房······················································································- 38 -9.3污泥回流泵站··············································································- 38 -10污泥脱水间 ······························································· - 39 -10.1设计说明······················································································- 39 -11鼓风机房 ·································································· - 39 - 12恶臭处理系统 ···························································· - 39 -12.1设计说明······················································································- 39 -12.2设计计算······················································································- 39 -12.3风机选型······················································································- 40 - 第四章污水处理厂总体布置 ····················································· - 41 -1总平面布置 ································································· - 41 -1.1总平面布置原则··········································································- 41 -1.2总平面布置结果··········································································- 41 -2高程布置································································································- 42 -2.1高程布置原则··············································································- 42 - 第五章参考文献 ···································································· - 42 -第一章设计概述1设计任务本次课程设计的主要任务是完成某城市污水厂的A2/O工艺设计处理生活污水，处理水量为20000m3/d，按近期规划人口10万人计算（自定）。
本设计污水处理厂综合设计包括15个图纸，十分全面，具体详见报告后附图。
本报告附图全面详细。
图纸内容如下：A2O池，初沉池，幅流式二沉池，隔栅，工艺简单图，工艺流程图（高程图），回转耙式格栅除污机图，平面布置图，污泥浓缩池，厌氧消化池，钟式沉砂池等。
全为CAD制图。
下载后复制放大或打印可看清！题目20000m3/d城市污水处理厂综合设计专业: 环境工程年级: 2005级学号: 3105001286姓名: 莫笑伟指导教师:2008年12 月摘要我国水体污染主要来自两方面，一是工业发展超标排放工业废水，二是城市化中由于城市污水排放和集中处理设施严重缺乏，大量生活污水未经处理直接进入水体造成环境污染。
工业废水近年来经过治理虽有所减少，但城市生活污水有增无减，占水质污染的51%以上。
我国水体污染主要来自两方面，一是工业发展超标排放工业废水，二是城市化中由于城市污水排放和集中处理设施严重缺乏，大量生活污水未经处理直接进入水体造成环境污染。
工业废水近年来经过治理虽有所减少，但城市生活污水有增无减，占水质污染的51%以上。
本设计要求处理水量为20000m3/d的城市生活污水，设计方案针对已运行稳定有效的A2/O活性污泥法工艺处理城市生活污水。
A2O工艺由于不同环境条件，不同功能的微）能生物群落的有机配合，加之厌氧、缺氧条件下，部分不可生物降解的有机物（CODNB被开环或断链，使得N、P、有机碳被同时去除，并提高对COD的去除效果。
它可以同NB－－时完成有机物的去除，硝化脱氮、磷的过量摄取而被去除等功能，脱氮的前提是NH3N应完全硝化，好氧池能完成这一功能，缺氧池则完成脱氮功能。
厌氧池和好氧池联合完成除磷功能。
关键词：城市生活污水，活性污泥，A2/O目录摘要 (III)目录 (IV)第一章设计概述 ······································································- 7 -1设计任务 ······································································- 7 - 2设计原则 ······································································- 7 - 3设计依据 ······································································- 8 - 第二章工艺流程及说明 ·····························································- 8 -1工艺方案分析 ································································- 8 - 2工艺流程 ······································································- 9 - 3流程各结构介绍 ·····························································- 9 -3.1格栅······························································································· - 9 -3.2沉砂池··························································································- 10 -3.3初沉池··························································································- 10 -3.4生物化反应池··············································································- 10 -3.5二沉池··························································································- 12 -3.6浓缩池··························································································- 12 - 第三章构筑物设计计算 ··························································· - 12 -1格栅 ·········································································· - 12 -1.1设计说明······················································································- 12 -1.2设计计算······················································································- 13 -2沉砂池 ······································································· - 16 -2.1设计说明······················································································- 16 - 3初沉池 ······································································· - 17 -3.1设计说明······················································································- 17 -3.2设计计算······················································································- 17 - 4生化池 ······································································· - 19 -4.1设计说明······················································································- 19 -4.2设计计算······················································································- 19 - 5二沉池 ······································································· - 26 -5.1设计说明······················································································- 26 -5.2设计计算······················································································- 26 - 6液氯消毒 ···································································· - 29 -6.1设计说明······················································································- 29 -6.2设计计算······················································································- 29 - 7污泥浓缩池 ································································· - 30 -7.1设计说明······················································································- 30 -7.2设计计算······················································································- 30 -8 污泥消化池 ································································· - 31 -8.1设计说明······················································································- 31 -8.2设计计算······················································································- 32 - 9浓缩污泥提升泵房 ························································ - 38 -9.1设计选型······················································································- 38 -9.2提升泵房······················································································- 38 -9.3污泥回流泵站··············································································- 38 -10污泥脱水间 ······························································· - 39 -10.1设计说明······················································································- 39 -11鼓风机房 ·································································· - 39 - 12恶臭处理系统 ···························································· - 39 -12.1设计说明······················································································- 39 -12.2设计计算······················································································- 39 -12.3风机选型······················································································- 40 - 第四章污水处理厂总体布置 ····················································· - 41 -1总平面布置 ································································· - 41 -1.1总平面布置原则··········································································- 41 -1.2总平面布置结果··········································································- 41 -2高程布置································································································- 42 -2.1高程布置原则··············································································- 42 - 第五章参考文献 ···································································· - 42 -第一章设计概述1设计任务本次课程设计的主要任务是完成某城市污水厂的A2/O工艺设计处理生活污水，处理水量为20000m3/d，按近期规划人口10万人计算（自定）。
毕业论文：城市污水处理厂工艺设计西安建筑科技大学华清学院课程设计(论文)用纸西安建筑科技大学华清学院课程设计(论文)任务书专业班级:给水2005级班学生姓名: 指导教师(签名): 一、课程设计(论文)题目城市污水处理厂工艺设计二、本次课程设计(论文)应达到的目的课程设计是高等工科学校给水排水工程专业本科学生培养计划中一个重要的实践性教学环节，学生在学完《水质工程学》课程内容后必须进行两个课程设计，其中一个就是“城市污水处理厂工艺设计”。
通过课程设计，培养学生综合运用《水质工程学》基本理论和专业知识的能力，培养学生进行城市污水处理工艺系统选择和单元构筑物设计计算的工程实践技能，培养学生独立分析问题和解决工程实际问题的初步能力。
通过本课程设计训练学生初步具备阅读中英文文献能力、技术和方案比较能力、理论分析与设计计算能力、应用计算机能力和工程制图及编写说明书的能力。
三、本次课程设计(论文)任务的主要内容和要求(包括原始数据、技术参数、设计要求等)1. 主要内容:完成城市污水处理厂工艺设计方案。
2. 基础资料及设计参数:(1)设计人口:近期设计人口为:(12+班次)×10000人+学号×2000人，排水量标准180L/人.天;远期发展人口(15+班次)×10000人+学号×2000人，排水量标准200L/人.天。
(2)工业废水:该城市工业企业生产废水全部经过厂内废水处理站进行处理后，33已经达到城市污水管道的纳污能力;近期排水量0.15m/s，远期排水量0.2m/s;时变化系数K =1.2。
h(3)污水性质:COD=400mg/L，BOD/COD=0.5，SS=180mg/L，夏季水温25?，冬季5水温15?，常年平均水温20?。
(4)纳污河流:位于城市南侧自西向东(01班)、东侧自北向南(02班)、北侧3自西向东(03班)、西侧自北向南(04班)，流量保证率为95%，流量Q=8m/s，平平均水深H=2m，平均流速V=0.2m/s，平均水温T=15?，溶解氧DO=8mg/L，平平BOD=2.8mg/L，SS=1.0mg/L，河流允许增加悬浮物浓度1.5mg/L，20年一遇洪5 水水位标高412.5m，常水位标高410.3m，城市排污口下游20km处有取水水源点。
南京理工大学课程设计题目: 50000m3/d污水处理工程方案设计学院：环境与生物工程学院专业：环境工程班级：09032701学号：0903270136学生姓名：刘洪全指导教师：江芳孟亚锋起讫日期：2012.12.29～2013.1.11目录一、设计依据 (1)二、设计范围 (1)三、项目概况 (1)四、废水的水质与水量 (1)五、排放标准 (1)六、废水处理工艺的确定 (2)七、构筑物设计 (3)八．构筑物计算结果及说明 (16)八、投资估算 (20)九、运行估算 (22)十一、技术经济指标 (23)十二、附件 (23)一.设计依据1.梁山县污水厂提供的有关生产规模、水量、水质等资料。
2.国家现行标准与规范3.水质、水量数据与调查监测资料及水样分析数据.4.给水排水设计手册（第6册）工业排水.5.给水排水设计手册（第5册）城市排水.6.有关的法规和地区环境保护规划.二.设计范围本工程为日处理量为50000的废水处理站设计，处理后的废水达标后排放，涉及到废水处理站以外的管网设计由厂方自行解决等等。
三．项目概况梁山县位于山东省西南部，黄河自西北过境，梁济运河纵贯南北。
原县城区没有污水处理厂，排水体制为雨污合流制，居民生活污水及工业废水直接或间接排放至河道，致使河道沿岸环境遭到严重污染。
由于梁山县紧靠南四湖，污水不经处理直接排入南四湖，严重影响了湖水水质和湖区水产品质量。
为此，政府决定兴建一座污水处理厂。
四.废水的水质与水量1．水质废水的原水水质：CODCr （mg/L）BOD5（mg/L）氨氮（mg/L）S S（mg/L）TP（mg/L）pH300~400 150~200 30~50 150~200 ~ 4 6~92.水量50000m3/d污水处理。
五.排放标准污水处理厂处理后的出水最终排入南四湖，根据湖水水体功能，要求排入其内的出水必须满足《城镇污水处理厂污染物排放标准》（GB18918-2002）中的一级B 排放标准，具体出水排放标准如下：COD Cr （mg/L ） BOD 5（mg/L ）氨氮（mg/L ） S S （mg/L ） TP （mg/L ）pH 粪大肠菌群数（个/L ）≤60≤20≤15≤20≤16~9≤104六.废水处理工艺的确定1.处理工艺的可行性论证由于该厂废水COD 、BOD 5较高因此所选工艺应该能有效去除有机物，该污水总氮与总磷也超标，因此该工艺应能同时处理总氮与总磷，选用AAO 工艺。
中山市三乡镇污水处理厂改扩建设计经验总结摘要：中山市三乡镇污水处理采用cass工艺，二期扩建规模5万m3/d，现已投入运行。
基于其改扩建前后的运行数据对比，总结设计实践的经验。
关键词：污水处理厂、cass工艺、设计经验1 工程概况中山市三乡镇污水处理厂一期工程总占地面积59912㎡（围墙内用地面积），建筑面积3016㎡，建、构筑物占地面积6397㎡，总投资9652.122万元。
一期已建有提升泵站及粗格栅、旋流沉砂池及细格栅、改良cass 反应池、污泥浓缩池、污泥脱水机房、鼓风机房、生物除臭装置、紫外线消毒池、变配电房、维修车间、办公及展示中心、员工宿舍、餐厅、大门、门卫等，建构筑物平面布置详见图1。
图1污水处理厂一期平面布置图其中粗格栅及提升泵房、细隔栅及旋流沉砂池、污泥脱水间（污泥浓缩、消化池）、变配电及鼓风机房、综合办公楼、门卫、机修间员工宿舍、围墙等建筑单体设计以及厂区内绿化等已建成。
三乡镇污水处理厂原设计总规模10万m3/d，采用cass工艺，分三期建设，一二期各2万 m3/d，三期6万 m3/d，其中一期于2008年3月投入运营。
后来由于服务范围调整，在《中山市三乡镇污水处理厂（二期）及集输系统（二期）工程可行性研究报告》中将污水厂总规模调整为17.5万m3/d，仍采用cass工艺，分三期建设，一期2万m3/d，二期5万m3/d，三期10.5万m3/d，并于2009年委托中山市规划设计院进行污水厂二期设计。
三乡镇污水厂一期设计进出水水质见表1：表1、一期设计进出水水质一期设计所采用的改良cass工艺流程如图2：图1、污水处理厂一期设计流程图图2 污水处理厂一期设计流程该污水厂二期工程设计与常规污水二期扩建相比较为复杂，存在以下一些难点：①规模调整问题。
原厂区面积、布局都是按早期规模确定，新规模下的二期设计既要与一期融和又要满足远期建设要求。
②厂区布局问题。
厂区面积有限，用地范围不能增加，在现有用地内布置17.5万 m3/d较为困难。
城市污水处理厂工艺设计毕业设计随着城市的快速发展和人口的不断增长，城市污水的排放量也日益增加。
城市污水处理厂作为城市基础设施的重要组成部分，对于保护水资源、改善环境质量具有至关重要的作用。
本次毕业设计旨在设计一座高效、经济、环保的城市污水处理厂，以满足城市发展的需求。
一、设计任务和要求本次设计的城市污水处理厂处理规模为_____吨/日，进水水质主要指标为：化学需氧量（COD）＿____mg/L，生化需氧量（BOD₅）＿____mg/L，悬浮物（SS）＿____mg/L，氨氮（NH₃N）＿____mg/L，总磷（TP）＿____mg/L 等。
出水水质需达到国家《城镇污水处理厂污染物排放标准》（GB 18918-2002）中的一级 A 标准，即COD≤50mg/L，BOD₅≤10mg/L，SS≤10mg/L，NH₃N≤5（8）mg/L，TP≤05mg/L。
二、污水处理厂选址污水处理厂的选址应综合考虑多方面因素，如地形、地质、水文、气象、周边环境、排水去向等。
选址应遵循以下原则：1、位于城市下游，便于污水自流进入处理厂，并能保证处理后的出水顺利排放。
2、有良好的工程地质条件，避免在地质灾害多发区建设。
3、少占农田，尽量利用荒地和劣地。
4、与周边环境协调，减少对周边居民生活和生态环境的影响。
经过综合比选，本次设计的污水处理厂选址在城市的_____方向，占地面积为_____平方米。
三、工艺流程选择目前，常见的城市污水处理工艺有活性污泥法、生物膜法、氧化沟法等。
结合进水水质特点和处理要求，本设计选用改良型 A²/O 工艺。
该工艺具有脱氮除磷效果好、运行稳定、管理方便等优点。
工艺流程简述如下：污水首先经过格栅去除较大的悬浮物和漂浮物，然后进入沉砂池去除砂粒。
经过预处理后的污水进入厌氧池，与回流的污泥混合，进行磷的释放。
接着进入缺氧池，进行反硝化反应，去除氮。
然后进入好氧池，进行有机物的降解、硝化反应和磷的吸收。
沈阳化工大学时间：2021.03.05 创作：欧阳理本科课程设计题目：某城市污水处理厂工程工艺设计院系：环境与安全工程学院专业：水质科学与技术班级： 1301学生姓名：朱立恒指导教师：金飙论文提交日期：年月日目录绪论 (3)第一章设计任务概述 (4)1.1 设计任务 (4)2.2 设计资料 (4)第二章污水处理厂工艺选择 (5)2.1处理工芝设计原则 (5)2.3污泥处理、处置工艺 (8)2.4净化污水消毒方式 (9)第三章 CASS工艺流程 (11)３.1 ............................................................... CASS工艺流程113.2 CASS工艺设计概要 (11)第四章污水处理厂设计计算 (13)4.1 设计参数 (13)4.2 构筑物设计计算 (13)第五章设计计算总结 (23)绪论本设计的课题为“某城市污水处理厂工程工艺设计”。
污水来源为生活污水和工业废水；项目服务面积8.70km2，服务人口约9万人。
设计污水量为50000m3/d。
本设计采用的是CASS工艺，BOD5去除率达90%以上，SS去除率达85%以上。
出水最终达到《城镇污水处理厂污染物排放标准》GB18918-2002中的二级标准。
主要设计构筑物为CASS反应池。
本设计四组CASS反应池，每组CASS反应池尺寸为 5.7×10.4×62.6m，其中微生物选择区（预反应区）长度为10m。
反应周期为4h，每日反应周期数为6。
每个反应池的曝气量为3277.6m3/h,底部铺设2845个空气扩散器，平均每个空气扩散器的曝气量为1.13m3/h.工艺流程如下：1、生活污水和工业废水；项目服务面积8.70km2，服务人口约9万人。
2、设计污水量50000m3/d。
2.2.2工程设计污水进水水质污水进水水质如表所示，单位：指标CODcr BOD5 NH4+-N TP SS数值（mg/L）3001504052002.2.3工程设计要求出水要求符合《城镇污水处理厂污染物排放标准》GB18918-2002中的二级标准，见表。
摘要随着经济的发展，近几年我国水污染控制所面临的问题也愈加严重。
我国人均水资源占有量远小于世界平均水平。
而水环境污染的加剧与水质的普遍恶化，使得水资源供需矛盾进一步加剧，这导致了人们开始担心饮用水水质的安全性。
如何建设全国城镇污水处理及再生利用设施、提升基本环境公共服务水平、促进主要污染物减排和改善水环境质量成为了当下主要的问题。
本次毕业设计的题目为城市污水处理厂工程设计，本设计采用卡鲁塞尔氧化沟工艺。
本设计的主要内容是工艺流程的选择；构筑物的设计、选型与计算；平面布置和高程布置；绘制城市污水厂平面布置图、高程图、工艺流程图及主要构筑物的施工图。
城市污水的水质特点为水中有机物、氨氮浓度较低，可生化性较好，适宜采用生物处理工艺进行处理。
本设计的污水处理厂进水水质为：COD cr=220mg/L，BOD5=100mg/L，SS=200mg/L，TN=30mg/L，NH3-N=20mg/L，pH=6～9。
经组合工艺处理后，污水处理厂出水水质为：COD cr≤60mg/L，BOD5≤20mg/L，SS≤20mg/L，TN≤20mg/L，NH3-N≤8mg/L，pH=6～9。
满足《城镇污水处理厂污染物排放标准》（GB18918-2002）中的一级B标准。
关键词：城市污水，卡鲁塞尔氧化沟，生物处理Designing of 1.1×105m3/d Municipal Wastewater TreatmentProcessAbstractWith economic development in recent years, the problem of water pollution control are also facing increasingly serious. China's per capita possession of water resources far less than the world average. Exacerbate the general deterioration of water quality and water pollution, water supply and demand makes further intensified. This has led people began to worry about the safety of drinking water. How to build the national sewage treatment and recycling facilities towns, enhance the level of basic public services, the environment, and promote emissions of major pollutants and improve the water quality of the environment has become a major problem the moment.The topic of the thesis is finding out some combined technologies to treat the municipal wastewater. The main of the combined technologies is Carrousel oxidation ditch process. The main contents of this design is the process of choice; structures design, selection and calculation; plane layout and height layout; draw the plant layout maps, height layout maps, process flow diagrams and the main building of the construction plans for the municipal wastewater treatment.Low concentrations of organic matter and ammonia is the water quality characteristics of municipal wastewater .And it suitable for processing biological treatment process.The design of the wastewater treatment plant influent water quality: COD cr=220mg/L,BOD5=100mg/L,SS=200mg/L,TN=30mg/L,NH3-N=20mg/L,pH=6～9. After oxidation ditch process,sewage treatment plant effluent quality is COD cr≤60mg/L，BOD5≤20mg/L，SS≤20mg/L，TN≤20mg/L，NH3-N≤8mg/L，pH=6～9. It meets the "urban sewage treatment plant pollutant discharge standard" (GB18918-2002) in a B standard.Keywords:sewage treatment plant, carrousel oxidation ditch, feed water quality of effluent.目录第一章绪论 (1)1.1 城市污水的主要来源 (1)1.2 城市污水的水质水量特点 (1)1.3 城市污水处理现状 (2)1.4 城市污水的处理方法 (3)1.4.1 物理处理方法 (3)1.4.2 化学处理方法 (3)1.4.3 生物处理方法 (3)1.5 本设计的意义及主要研究内容 (4)第二章设计说明 (6)2.1 设计概述 (6)2.1.1 设计任务 (6)2.1.2 设计依据 (6)2.1.3 去除率 (6)2.2 方案选择 (6)2.2.1 确定污水处理方案的原则 (7)2.2.2 污水处理方案的比选 (7)2.2.3 格栅 (9)2.2.4 沉砂池 (9)2.2.5 氧化沟 (9)2.2.6 沉淀池 (11)2.2.7 接触池 (12)2.2.8污泥处理 (13)第三章设计计算 (15)3.1 粗格栅 (15)3.1.1 设计依据 (15)3.1.2 设计计算 (15)3.1.3 计算草图 (17)3.2 进水泵房 (18)3.2.1 设计依据 (18)3.2.2 设计计算 (18)3.3 细格栅 (18)3.3.1 设计依据 (18)3.3.2 设计计算 (19)3.4 沉砂池 (21)3.4.1 设计依据 (21)3.4.2 设计计算 (21)3.4.3 计算草图 (24)3.5 卡鲁塞尔氧化沟 (24)3.5.1 设计依据 (24)3.5.2 设计计算 (25)3.5.3 计算草图 (28)3.6 二沉池 (28)3.6.1 设计依据 (28)3.6.2 设计计算 (28)3.6.3 计算草图 (31)3.7 接触池 (31)3.7.1 设计概述 (31)3.7.2 设计计算 (31)3.7.3 计算草图 (32)3.8 污泥处理系统的设计计算 (32)3.8.1 污泥浓缩池 (32)3.8.2 贮泥池及污泥泵 (33)3.8.3 脱水机房 (34)3.9 污水厂的整体布置 (34)3.9.1 污水厂的高程平面布置 (34)3.9.2 污水厂的高程布置 (35)第四章结论 (37)参考文献 (38)致谢 (39)第一章绪论1.1 城市污水的主要来源城市污水主要包括生活污水和工业污水，由城市排水管网汇集并输送到污水处理厂进行处理。
课程设计题目:40000m3/ｄ处理规模城市污水处理厂（课程)设计学生学院环境科学与工程学院专业班级学号学生姓名指导教师２０1４年３月目录摘要ﻩ0第一章设计概述ﻩ错误!未定义书签。
第一节设计原则、任务、内容及依据............................................................... 错误!未定义书签。
一、设计题目ﻩ错误!未定义书签。
二、设计原则 ...................................................................................................... 错误!未定义书签。
三、设计内容 ...................................................................................................... 错误!未定义书签。
四、设计依据ﻩ错误!未定义书签。
第二节设计规模ﻩ错误!未定义书签。
第二章工艺流程及说明............................................................................................. 错误!未定义书签。
第一节工艺路线选定(处理方法和工艺流程)ﻩ错误!未定义书签。
工艺流程框图 (4)第二节流程各结构介绍....................................................................................... 错误!未定义书签。
第三章工艺流程设计计算..................................................................................... 错误!未定义书签。
5万m3d城市污水主要构筑物工艺设计第一章：环境工程学课程设计任务书（水污染控制单元构筑物工艺设计）课程名称环境工程学课程设计课程编号课程英文名称Course Design of EnvironmentaiEngin eeri ng课程类型必修所属学科环境科学与工程学时和学分2周/ 2适用专业环境科学大纲执笔人方继敏修订时间2010年5月先修要求环境工程学等1.1 课程设计基本目的本课程设计环节是环境科学专业的主要实践环节之一。
本实践环节的主要任务是熟悉环境工程学原理及水污染控制技术的基本原理和应用。
通过本环节的实践，使学生掌握水处理工程单元构筑物设计的理念和方法；使学生能从整体的角度和系统的观点出发，了解环境工程水处理单元构筑物设计的过程和特点，增强其设计能力，掌握水处理设计的基本原则、方法和步骤；并通过对某一典型流程的设计计算、绘图，使学生初步具备水处理工程的设计能力，增强学生的工程观念，加深对课本知识的理解和掌握。
1.2学习收获1掌握环境工程水处理单元构筑物设计的基本原则、方法和步骤；2 了解水处理的设计规范及常用资料的查阅；3掌握典型水处理工艺流程的设计计算过程；4掌握水处理机械设备的选型及管渠系统的设计。
5掌握对处理单元的构筑物的图纸的绘制。
1.3内容提要与要求：1.3.1水处理单元构筑物工艺流程的设计计算按照任务书的要求，完成工艺流程的选择，牢固掌握各部分处理单元的设计过程。
1.3.2机械设备的选型了解设备选型的方法和依据。
1.3.3绘图绘制某一单元构筑物的工艺图纸。
1.3.4完成设计说明书的编写1.4 设计基础资料：题目: 5 万m3/d 城市污水主要构筑物工艺设计初始条件：1.4.1 、设计总水量：污水类别为城市污水，设计水量为5 万m3/d ；1.4.2 水质情况(1)、BOD为170mg/L;( 2)、TN 为20mg/L；(3)、TP 为2.5mg/L。
1.4.3 出水情况出水标准按照国家标准(GB18918-2002中的一级B的标准: ( 1)、BOD5 最大为20mg/L;(2)、TN最大为20mg/L;(3)、TP 最大为1.0 mg/L。
第二章：设计说明书该城市污水处理厂主要是用于处理区内生活污水。
由于各个企业都具有不定量不定时排放废水，并且水质变化很大，污水厂所处理的废水水量波动都较大，根据这一特征，可见对污水必须进行较好的预处理，活性污泥法的处理效果较好，所以污水厂的主要工艺流程设计为：氧化沟—沉I ------------ ij污泥4」----- ------------- -------------1----- ~~H混凝絮—-i I污污泥污泥1.污水厂的工业废水与生活污水分流进入，由于工业废水不含大的垃圾，进水处不设格栅，格栅只是设在生活污水进水处，对生活污水进行预处理。
2.由于采用的是活性污泥法，水质水量的不稳定都会对活性污泥造成冲击，影响处理能力，所以对于废水的预处理就至关重要，而缓冲池-均化池-配水中和池就是这个重要环节。
在流程之首就为各个工业用户配有专门的独立的一级缓冲池，而二级缓冲池将对几个用户进行混合，在二级缓冲池中配有在线测毒仪（TOXIMET日R,它是模拟生化池的生物发应器，进行对混合废水的毒性在线监测，若检测到二级缓冲池的水质不符合设计的出水水质（将可能造成抑制或毒害活性污泥），池中的水将会切换到事故池中，另有一台测毒仪将对每个用户的水质进行调查，找出造成毒性的根源后，将根源的废水切换至事故池进行缓存。
在事故池的超标废水将进行曝气处理，并将按一定的比例与生活污水一起排放到均化池中。
进水仪表间主要设备：在线测毒仪：3台采样泵：5台，分别为功率1.1KW 流量110~650L/h，压力2Pa 功率0.55KW 流量5~35L/h，压力2Pa（2台）功率0.55KW 流量10~50L/h，压力2Pa（2台）事故池主要设备：输送泵：：2台（1备一用），能力200mVh，功率7.5KW 压力0.6Pa3.全部二级缓冲池的出水将汇集在均化池中进行充分的混合，另外还有生活污水直接排放在这。
均化池具有4台潜水搅拌器，并还有4台水射器，其目的在于使池中的废水具有一定的溶解氧，避免硫酸盐（SQJ还原成硫化物，可以避免对生化池的影响和对设备的腐蚀。
主要设备：潜水泵：2台（1备一用），能力548nVh，功率22KV，压力0.8Pa潜水搅拌器：4 台，功率13KW 水力射流器：4台，功率13.5KW 4．配水中和池将对均化池的出水进行中和（采用98％的H2SO4，30％的NaOH），使出水的PH值在7-9之间。
主要设备：搅拌机（1 台，11KW）5 ．生化池采用阶段曝气式活性污泥法（曝气系统是表曝机）使用了二廊道设计，在池中不同地方设置了三个在线溶氧仪，对池中水的DO值进行监测，并控制六台表曝机的运行时间（保持DO值在2-4mg/l范围内）。
主要设备：潜水搅拌器：6 台，功率13KW表面曝气机：6 台，功率35KW6 ．二沉池为中心进水辐流式，刮泥桥的转速为60r/h ，沉淀下的污泥先收集在污泥回流井中，剩余的污泥将进入污泥缓存池。
主要设备：桥驱动：1 台，功率0.37KW污泥回流泵：2台（1备1用），能力548 m3/h，功率22KV y扬程10m 排污泵：2台（1备1用），能力25 m3/h，功率1.7KW，扬程12m 7．混凝絮凝池分为两个相连的池子，废水先经过混凝池，进行快速搅拌，投加FeCb作为混凝剂使油滴，胶体和悬浮固体脱稳产生小矶花，再进入絮凝池进行低速搅拌，添加PAM（聚丙烯酰胺）将矶花聚集较大的牢固的矶花。
主要设备：搅拌机：3台，功率分别为0.37 KW，1.5 KW，5.5 KW8．气浮的主要设备有空气干燥机，空压机，压力溶气罐，竖流式气浮池。
溶气罐的运行压力为5X 105Pa,空气注入罐后在水中溶解，然后饱和空气的水通过一个释压装置送至气浮池入口，保证产生50-80 微米的气泡。
产生的污泥有沉淀下的污泥和浮渣，这些污泥将收集到污泥缓存池。
主要设备：桥驱动：1 台，0.37 KW3循环泵：2台（1备1用），能力170 m/h，功率55KV，扬程6m空压机：2台（1 备1 用），能力30 m3/h ，额定压力1Mpa水压力容器：1套，额定压力600Kpa容量2000L污泥泵：2台（1备1用），能力2〜10 m3/h，功率3KW/压力2Pa 潜水排污泵：1台，23.6 m3/h，功率1.2KW，压力0.8Pa9．污泥浓缩的目的是使污泥初步脱水、缩小污泥体积．为后续处理创造条件。
浓缩脱水方法有重力沉降浓缩、上浮浓缩以及其他浓缩方法。
这里使用重力浓缩—辅流式污泥浓缩池。
浓缩后的污泥采用带式压滤机处理污泥，最后产生的干泥运往垃圾焚烧厂处理。
主要设备：带式压滤机：型号：DY—1000;滤带有效宽：1000mm滤带速度：0.8m/min ; 压榨过滤面积：4.6m2;清洗水压力》0.5MPa产泥量：50kg/h • m外型：5750X 1856X 2683mm 功率3KW10．出水调节池可以稳定水质，保证水质达到排放标准。
第三章：城市污水处理厂主要构筑物工艺设计及计算 本设计方案的主要生产构筑物包括：格栅、涡流式沉砂池、改良式氧化沟、 二沉池。
设计流量a.日平均流量333Q d =50000m 3/d 〜2083.3m 3/h=0.578m 3/s=578L/sb.最大日流量3 3 3Q max z • Q d =1.34X 2083.3m /h=2791.62m /h=0.775m /s3.1 格栅设计及计算进水中格栅是污水处理厂第一道预处理设施，可去除大尺寸的漂浮物或悬 浮物，以保护进水泵的正常运转，并尽量去掉那些不利于后续处理过程的杂物。
拟用回转式固液分离机。
回转式固液分离机运转效果好，该设备由动力装 置，机架，清洗机构及电控箱组成，动力装置采用悬挂式涡轮减速机，结构紧 凑，调整维修方便，适用于生活污水预处理。
3.1.1设计说明栅条的断面主要根据过栅流速确定，过栅流速一般为0.6〜1.0m/s ，槽内流速0.5m/s 左右。
如果流速过大，不仅过栅水头损失增加，还可能将已截留在栅 上的栅渣冲过格栅，如果流速过小，栅槽内将发生沉淀。
此外，在选择格栅断 面尺寸时，应注意设计过流能力只为格栅生产厂商提供的最大过流能力的 80%以留有余地。
3.1.2具体设计 3.1.2.1粗格栅格栅倾角资料K Z2.727 Qd0.11 5780.11=1.341设计参数：设计流量：Q i =0.578m 3/s; 过栅流速:v i =0.90m/s; 栅条宽度:s=0.01m; 格栅间隙:e=60mm;栅前部分长度0.5m ； 格栅倾角：a =60°单位栅渣量W=0.03m 3栅渣/103吊污水2设计计算2(1 )确定格栅前水深，根据最优水力断面公式Q !=旦巴计算得栅前槽宽2 B i = 1.13m ，则栅前水深 h =--_ 1.13 ... 0.6m2 2(2)栅条间隙数门=Q1"sin* =0.578汉Usin60° 肚 17.(取 n=18)eh)1W0.06 汉 0.6 汉 0.9(3) 栅槽有效宽度:B 2=s (n-1 ) +en=0.01 x (18-1)+0.06 x 18=1.25m (4) 进水渠道渐宽部分长度鹉二瓷2&°.16m(其中a 1为进水渠展开角)(5)栅槽与出水渠道连接处的渐窄部分长度 L 2 = 5「吐 二0.08m2 2(6) 过栅水头损失(h 1)因栅条边为矩形截面，取k=3,则其中:h o ：计算水头损失mk :系数，格栅受污物堵塞后，水头损失增加倍数，取k=320 二矶=k vsin ： =3 2.42 (2g四)30.060.922 9.81sin60 = 0.024m:阻力系数，与栅条断面形状有关，=B (s/e ) 4/3当为矩形断面时B = 2.42(7) 栅后槽总高度(H)取栅前渠道超高h 2=0.3m ,则栅前槽总高度Hi=h+b=0.6+0.3=0.9m 栅后槽总高度 H=h+h+h 2=0.6+0.024+0.3=0.924m(8) 格栅总长度 L=L I +L 2+0.5+1.0+ H i /tan a=0.16+0.08+0.5+1.0+0.9/ta n60 ° =2.26m(9)每日栅渣量：用公式W=Qmax Wl 86400计算，取W=0.02m 3/103m K 总汉1000所以宜采用机械格栅清渣(10)计算草图如下：2課\ .■ / \\\■=! Jy 厂/ / 1 ■-S =F / '1 _ /a■ -1进 水「W_Q max W 86400K 总 1000总、0.775 0.02 864001.40 1000二 0.95m 3/d . 0.2m 3/d栅条工作平台图1中格栅计算草图3.122细格栅 1设计参数：设计流量：Q i =0.578m 3/s; 过栅流速:v i =0.80m/s; 栅条宽度:s=0.01m; 格栅间隙:e=10mm; 栅前部分长度0.5m格栅倾角：a =60° ；单位栅渣量W=0.1m 3栅渣/103m 污水 2 •设计计算2Q =2 0.578^.2m ，则栅前水深 h 二旦上=0.60m : 0.8 2 2(2) 栅条间隙数 n 二 Ql a ： = 0.578 sin60 J12.1 (取 n=120)ehv 0.01 汇 0.6 汉 0.8设计三组格栅，每组格栅间隙数 n=40条(3) 栅槽有效宽度 B=s (n-1 ) +ne=0.01 (40-1 ) +0.01 x 40=0.79m所以总槽宽为B=0.79x 3+0.2 x 2= 2.77 (考虑中间隔墙厚0.2m )(4) 进水渠道渐宽部分长度L ,=卫 旦_ = 2.77 -1.2= 2.1呦2ta na 2ta n20°(其中a 1为进水渠展开角)(5)栅槽与出水渠道连接处的渐窄部分长度L^L 1= 1.08m2(6) 过栅水头损失(h 1)因栅条边为矩形截面，取k=3,则242耐二kh 。
