某城市污水处理厂毕业设计 完整版含图纸
某城镇污水处理厂毕业答辩
工艺 普通活性污泥法
氧化沟
优点
缺点
推广年限长，具有成熟的 运行经验，处理效果可靠， 如设计合理，运行得当， 出水BOD5可10~20mg/L
工艺路线长，工艺构筑物 及设备多而复杂，运行管 理困难，运行费用高。
采用低负荷延时曝气方式，
曝气效果好，处理效果好， 不但可以达到95%以上的 BOD去除率，还可以达到 部分脱氮除磷的目的
贮泥池
L5×B3×H5.3
2座
污泥消化池（一级） DN19×H17.5
污泥消化池（二级）
DN19
贮气柜
DN12.4×H8.27
2座 一座 2座
污泥脱水
5台
事故干化场
主要设备 竖流式浓缩池 矩形贮泥池 固定盖式消化池 固定盖式消化池
低压浮盖式贮气柜 带式压滤机
5 泵站设计
采用自灌式泵房，采用集水池与机器间合建，泵房运用半地 下式。
7 污水处理厂高程布置
污水处理厂污水处理高程布置的主要任务是：确定各构 筑物和泵房的标高，确定处理构筑物之间连接管(渠)的尺 寸及其标高，保证污水处理厂的正常运行。污水高程计
编号算表
名称
上游水面标高 下游水面标高 构筑物水面标高
1
出水口至计量堰
2
计量堰
3
计量堰到消毒池
4
消毒接触池
140.5 140.9 141.004 141.3
上游水面标高 142.260 141.860 141.145 142.490 142.400 141.200 141.096
146.031 144.831 144.571 143.371 142.851 142.900 142.500
下游水面标高 141.860 141.145 142.490 142.400 142.200 141.096 141.031
某城市污水处理厂二级处理工艺设计毕业设计
某城市污水处理厂二级处理工艺设计第一节设计任务及要求一、课程设计题目某城市污水处理厂二级处理工艺设计三、课程设计基础资料某城市污水处理厂二级处理工艺设计（附件1）四、课程设计内容和要求（一）设计内容：根据任务书给定资料，完成一个小型污水处理厂的工艺设计。
2、设计图纸图纸右下角为设计图签，注明图名、比例、学生班级、姓名等。
（1）污水处理厂总平面布置图1张（A3 CAD图）。
①要求以计算或选定尺寸按一定比例绘出全部处理构筑物、及附属建筑物、道路、绿化、厂界。
厂区内构筑物布置要合理，可按功能划分成几个区域（如：污水处理区、污泥处理区、办公及辅助区等）。
标注构筑物外形尺寸、平面位置（可用相对坐标（x, y）表示，以某点的相对坐标为零点）；②绘出各种管渠、阀门、检查井等（例如：污水管、排泥管、回流污泥管、超越管、总事故管、空气管、上清液管、沼气管等）。
标注管径、渠道尺寸、长度和坡度；③在右上角绘出指北针；④绘制管线等图例；⑤列表说明图中构（建）筑物的名称、数量和尺寸；⑥图纸布局要美观。
（3）污水处理厂高程布置图1张（A3 CAD图）。
①在污水与污泥处理流程中，要求沿污水、污泥在处理厂中流动的最长路程绘制流程中各处理构筑物、连接管渠的剖面展开图（从污水进厂的粗格栅起，至处理后的排水渠）；②图中要画出设计地面线、构筑物中水面线及标高，标注各构筑物的顶部、底部及水面线标高，标注构筑物名称；1③图纸布局要美观。
第二章污水处理工艺流程说明第一节设计规模的确定1.1 设计题目某城市污水处理厂二级处理工艺设计1.2 设计资料（1）设计水量：100 000 Td；（2）水质：表1-1 设计水质表（3）处理要求：出水水质达到城镇污水处理厂污染物排放标准（GB18918-2002）中的二级标准。
表1-2 排放水质表（4）厂区条件：①地势平坦，为300×300㎡一方形厂区；②气象条件：常年平均气温13℃；③工程地质：厂址周围工程地质良好，适合于修建城市污水处理厂，厂区平均海拔高程450m。
20000m3d城市污水处理厂综合设计(含11个CAD作图图纸)--优秀毕业设计
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）。
污水处理厂毕业设计(包含CAD大图)
目录引言................................................. 错误!未定义书签。
1 设计任务及概况 (6)1.1设计任务及依据 (6)1.1.1 设计任务 (6)1.1.2 设计依据及原则 (6)1.1.3设计围 (7)1.2设计水量及水质 (7)1.2.1设计水量 (7)1.2.2设计水质 (7)1.3.3设计人口 (7)2 工艺设计方案的确定 (8)2.1方案确定的原则 (8)2.2污水处理工艺流程的确定 (8)2.2.1厂址及地形资料 (8)2.2.2气象及水文资料 (9)2.2.3可行性方案的确定 (9)2.2.4工艺流程方案的确定 (10)2.2.5污泥处理工艺流程 (12)2.3主要构筑物的选择 (12)2.3.1格栅 (12)2.3.2泵房 (13)2.3.3沉砂池 (13)2.3.4初沉池、二沉池 (14)2.3.5曝气池 (14)2.3.6接触池 (15)2.3.7计量槽 (16)2.3.8浓缩池 (16)2.3.9消化池 (16)2.3.10污泥脱水 (17)3污水处理系统工艺设计 (17)3.1格栅的计算 (17)3.1.1粗格栅 (17)3.1.2格栅的计算 (18)3.1.3选型 (21)3.2泵房 (21)3.2.1泵房的选择 (21)3.2.2泵的选择及集水池的计算 (21)3.2.3扬程估算 (22)3.3细格栅 (22)3.3.1细格栅的计算： (22)3.3.2格栅的计算 (23)3.3.3选型 (25)3.4沉砂池的计算 (26)3.4.1池体计算 (26)3.4.2沉砂室尺寸计算 (27)3.4.3排砂 (29)3.4.4出水水质 (30)3.5初沉池 (30)3.5.1池体尺寸计算 (30)3.5.2中心管计算 (33)3.5.3出水堰的计算 (34)3.5.4集配水井计算 (35)3.5.5出水水质 (35)3.5.6选型 (36)3.6曝气池 (36)3.6.1池体计算 (36)3.6.2曝气系统设计与计算 (39)3.6.3供气量 (40)3.6.4空气管道系统计算 (43)3.6.5空压机的选择 (46)3.6.6污泥回流系统 (46)3.7二沉池 (47)3.7.1池体尺寸计算 (47)3.7.2中心管计算 (50)3.7.3出水堰的计算 (51)3.7.4集配水井计算 (51)3.7.5出水水质 (53)3.7.6选型 (53)3.8接触池 (53)3.8.1接触池尺寸计算 (53)3.8.2加氯间 (54)3.9计量槽 (55)4 污泥的处理与处置 (55)4.1污泥浓缩池 (55)4.2污泥消化池 (59)4.2.1 一级消化池池体部分计算 (59)4.2.2 一级消化池池体各部分表面积计算 (61)4.2.3二级消化池 (62)4.3贮气柜 (62)4.4污泥控制室 (63)4.4.1污泥投配泵的选择 (63)4.4.2污泥循环泵 (64)4.4.3污泥控制室布局 (65)4.5脱水机房 (65)4.5.1采用带式压滤机除水 (65)4.5.2选型 (66)4.6事故干化场 (66)4.7压缩机房 (67)5 污水处理厂总体布置 (67)5.1平面布置 (67)5.1.1平面布置的一般原则 (67)5.1.2 平面布置 (67)5.2污水处理厂高程布置 (68)5.2.1高程布置原则 (68)5.2.2污水污泥处理系统高程布置 (69)总结 (70)参考文献 (72)致 ................................................... 错误!未定义书签。
20000m3d城市污水处理厂综合设计(含11个CAD作图图纸)--优秀毕业设计{修}
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）。
毕业设计城市污水处理厂初步设计(完全混合流态生物工艺)
毕业设计相关材料题目: 城市污水处理厂初步设计（完全混合流态生物工艺）院(系)：化工与环境工程学院专业：环境工程学生：班级：环境07-1摘要当今，随着经济的快速发展，人民生活水平的不断提高，环境污染日趋严重，加大城市生活污水治理力度势在必行。
现拟建一座城市生活污水处理厂，处理规模为100000m3/d。
进水水质为COD Cr：250mg/L，BOD5 ：150mg/L，SS：200mg/L，NH3-N：40mg/L，NO3-N：10mg/L，pH=7.0~8.5,出水水质为COD Cr≤100mg/L，BOD5≤30mg/L，SS≤30mg/L，NH3-N ≤25mg/L，pH=6~9。
根据进出水水质，本设计拟采用完全混合液态的生物工艺，经比选，确定采用周期循环曝气活性污泥（CASS）工艺。
CASS工艺污水呈完全混合液态，对进水水质、水量、PH和有毒有害物质起到较好的缓冲作用，具有较强的耐冲击负荷能力，同时对丝状菌的生长起到抑制作用，可有效防止污泥膨胀。
此工艺具有投资省，处理效果好，运行管理方便等优点，适用于大中型污水处理厂使用。
本设计包含污水处理工艺流程的确定，工艺流程中各单元的计算，图纸的绘制等。
本工程的实施将显著改善受纳水体水质，同时间接产生经济效益，促进经济可持续发展。
关键词：污水处理厂；完全混合；CASS工艺AbstractNowadays, with rapid economic development, improve living standards, environmental pollution is worsening, and increase efforts to municipal sewage treatment is imperative.Now proposed a city sewage treatment plant for treating scale 100000m3 / d. The ram water quality is COD Cr, BOD5, SS, NH3-N, NO3-N,and pH keep at 250mg / L,150mg / L,200mg / L,40mg / L,10mg / L, and 7.0 ~ 8.5, respectively.The treated water quality is COD Cr, BOD5, SS, NH3-N, NO3-N,and pH keep at 100mg / L, 30mg / L, 30mg / L, 25mg / L,ant pH 6 ~ 9, respectively. According to the treated water quality, the design plans to use the completely mixed biotechnology, by comparison, determine to use of cyclic activated sludge system (CASS) process. sawage of CASS process is completely mixed, on water quality, water quantity, PH, toxic and hazardous substances have buffer role effect, with a strong resistance to shock loading capacity, meanwhile growth of filamentous bacteria is be inhibition to be prevent sludge bulking. This process has the advantage of good Less investment, good effect, easy operation and management .Applicable to large or medium sized sewage treatment plants. The design includes the determination of sewage treatment process, process in the calculation of each unit and drawing the construction drawings. The implementation of this project will significantly improve the water quality of receiving water, and indirect economic benefits and promote sustainable economic development.Key word: sewage treatment plants; Completely Mixing; CASS process目录摘要 (I)Abstract (III)目录 (IV)第一章前言 (1)1.1 设计的目的及意义 (1)1.2 设计指导思想 (1)1.3设计的容及要求 (1)1.3.1主要容 (1)1.3.2要求 (2)1.4 国外发展概况 (2)1.5 设计依据及原则 (2)1.5.1 设计依据 (2)1.5.2 设计原则 (3)1.6设计原始资料 (3)1.6.1 设计规模 (3)1.6.2 水质指标 (3)1.6.3气象资料 (3)1.6.4污水排水接纳河流资料 (4)1.6.5厂址及场地现状 (4)第二章污水处理厂工艺方案的选择 (4)2.1设计方案论证 (4)2.2.1活性污泥法处理系统有效运行的基本条件是： (4)2.2.2环境因素对微生物生长的影响 (4)2.2 原污水可生化性分析 (5)2.3 污水处理程度的确定 (6)2.3.1 水质情况 (6)2.3.2处理程度计算 (6)2.4污水处理厂工艺方案比选 (7)2.4.1 A2/O工艺 (7)2.4.2 奥贝尔（Orbal）氧化沟 (8)2.4.3 CASS工艺 (9)2.4.4 工艺方案选择 (12)2.4 处理程度计算 (12)2.4.1 CODcr的处理程度 (12)2.4.2 溶解性BOD5的处理程度 (12)2.4.3 SS的处理程度 (12)2.4.4 NH3-N的处理程度 (13)第三章单元构筑物的设计计算 (14)3.1粗格栅设计计算 (14)3.1.1 设计说明 (14)3.1.2 栅前明渠宽度 (14)3.1.3 栅条的间隙数 (15)3.1.4 栅槽宽度 (15)3.1.5 进水渠道渐宽部分的长度 (16)3.1.6 栅槽与出水渠道连接处的渐窄部分长度 (16)3.1.7 过栅水头损失 (16)3.1.8 栅后槽总高度 (17)3.1.9 栅槽总长度 (17)3.1.10 每日栅渣量计算W (17)3.2 泵站的设计计算 (17)3.2.1 泵房规要求 (17)3.2.2 污水泵计算 (18)3.2.3 集水池 (19)3.3细格栅设计计算 (19)3.3.1 设计说明 (19)3.3.4 栅条的间隙数 (20)3.3.3 栅槽宽度 (20)3.3.4 进水渠道渐宽部分的长度 (21)3.3.5 栅槽与出水渠道连接处的渐窄部分长度 (21)3.3.6 过栅水头损失 (21)3.3.7 栅后槽总高度 (22)3.3.8 栅槽总长度 (22)3.3.9 每日栅渣量计算W (22)3.4 沉砂池的设计计算 (22)3.4.1 沉砂池的选择 (22)3.4.2 沉砂池设计计算一般规定 (23)3.4.3 设计参数 (23)3.4.4 设计计算 (23)3.5 CASS池设计计算 (25)3.5.1 基本设计参数 (25)3.5.2 BOD5去除率的计算 (26)3.5.3 污泥负荷率 (26)3.5.4 曝气时间 (26)3.5.5 沉淀时间T S (26)3.5.6 排水时间T D (27)3.5.7 周期数的确定 (27)3.5.8 进水时间TF (27)3.5.9 CASS池运行模式 (27)3.5.10 CASS池容积及构造尺寸 (28)3.5.11 复核出水溶解性BOD5 (29)3.5.12 潜水搅拌器 (30)3.5.13 曝气系统设计计算 (30)3.5.14供气量的计算 (31)3.5.14 进出水管路计算 (33)3.6紫外消毒渠道 (34)3.6.1 紫外消毒渠道的功能 (34)3.6.2紫外消毒渠道设计计算 (34)3.7污水计量设备 (35)3.8 产泥量及排泥系统 (36)3.8.1产泥量 (36)3.8.2排泥系统 (36)3.8污泥回流 (37)3.8.1设计说明 (37)3.8.2回流污泥泵设计选型 (37)3.9 重力浓缩池设计计算 (38)3.9.1设计参数 (38)3.9.2设计与计算 (38)3.10 贮泥池 (40)3.11消化池 (40)3.11.1消化池容积计算 (41)3.11.2消化池各部分表面积计算 (41)3.11.3消化池热工计算 (42)3.11.4沼气混合搅拌计算 (43)3.11.5产气量及贮气柜 (43)3.12污泥脱水设备 (44)3.13附属构筑物 (44)第四章污水处理厂配套工程设计 (45)4.1 厂区平面设计 (45)4.1.1 平面布置原则 (45)4.1.2 平面布置 (46)4.2 厂区高程设计 (46)4.2.1 高程布置注意事项 (46)4.2.2 高程计算 (47)第五章环境保护及劳动卫生 (51)5.1 项目施工期对环境影响及对策 (51)5.1.1 项目施工期对环境的影响 (51)5.1.2 施工期对环境影响的对策 (52)5.2 项目运营期对环境影响及对策 (53)5.2.1 项目运营期对环境的影响 (53)5.2.2 运营期环境影响的对策 (53)5.3 劳动保护与安全生产 (54)第六章工程投资估算及效益分析 (55)6.1投资估算 (55)6.1.1．估算围 (55)6.1.2.编制依据 (55)6.1.3投资估算 (55)6.2 运行成本估算 (57)6.2.1 成本估算的有关单价 (57)6.2.3运行成本估算 (57)6.2.4 运行成本核算 (58)6.3效益分析 (58)6.3.1 环境效益 (58)6.3.2 社会效益 (58)结论 (59)致 (60)参考文献 (61)第一章前言1.1 设计的目的及意义随着我国社会和经济的高速发展,水环境日益恶化，2007年，我国600多个城市有400多个城市缺水，缺水原因主要不在于水量不足，而在于水质污染严重，属于水质性缺水。
毕业设计---某城市污水处理厂工艺设计(含外文翻译)
摘要本次设计的题目某城市污水处理厂工艺设计，设计流量为15万m3/d,进水水质为BOD5=200mg/L，CODc r=450mg/L，SS=370mg/L，氨氮=15。
出水水质：CODcr≤63mg/L；BOD5≤14 mg/L；SS≤30 mg/L；氨氮≤3 mg/L。
设计要求出水水质满足《中华人民共和国污水综合排放标准》(GB8978－1996)二级标准。
采用氧化钩法处理该城市污水，氧化沟处理技术70年代末就在国内开始应用，在污水处理中取得了良好的效果。
氧化沟是活性污泥法的一种改型，其曝气池呈封闭的沟渠型，污水和活性污泥的混合液在其中进行不断的循环流动，氧化沟通常在延时曝气条件下进行污水处理，这时水力停留时间长(10～40h)，有机负/(kg VSS•d)]。
与其他生物处理工与艺相比,有以下一些荷低[0.05～0.15kg BOD5技术、经济方面的特点：工艺流程简单，构筑物少，运行管理方便；曝气设备和构造形式的多样化、运行灵活；处理效果稳定、出水水质好并可以实现脱氮除磷。
关键词：城市污水，氧化沟，活性污泥法AbstractThe design for the title of the city sewage treatment plant process design, design flow for the 150 ,000 m3 / d, water quality for BOD5 is200mg / L, COD cr is 450mg / L, SS is 370mg / L, Ammonia is15. Effluent quality for BOD5is less than 14mg / L, COD is less than 63mg / L, SS is less than 30 mg / L, Ammonia is less than 3mg / L. The drainage water should meet the two criteria water requirements of GB8978-1996《wastewater discharge standards》.By the oxidation ditch treatment of urban sewage，oxidation ditch technology was applied in our country about 70s, and had good effect in treating waste water. Oxidation ditch is a remodel of active mud method, its plug flow aeration assuming obturate ditch type, the mixed liquid of waste water and active mud flowing in circle. Oxidation ditch usually treats waste water in delay plug flow condition, the waterpower has long settle time (10～40h), low organic loading [0.05～0.15kg BOD5/(kg VSS•d)]. comparing with other biology treat technology, such as: simple process, little building, convenient to administering, its equipment and structure diversification, stabilization effect, and has good water quality, can pull off the nitrogen.Keywords : Urban Sewage,Oxidation ditch,Live and dirty mire method目录摘要 (I)ABSTRACT (II)目录 (1)第一章绪论 (4)1.1设计任务 (4)1.1.1设计题目 (4)1.1.2设计任务与内容 (4)1.1.3基本要求 (4)1.1.4设计计算说明书的具体要求 (5)1.2设计原始资料及处理目标 (5)1.2.1进水水质资料 (5)1.2.2气候资料 (5)1.2.3处理目标 (6)1.2.4处理效果的估算 (6)1.3处理工艺比较与选定 (6)1.3.1水质特征 (6)1.3.2目前国内外的研究现状 (7)1.3.3活性污泥法的新发展 (8)1.3.4工艺流程的确定 (9)1.3.5设计依据 (12)第二章污水处理构筑物设计计算 (14)2.1中格栅 (14)2.1.1设计说明 (14)2.1.2设计参数 (14)2.1.3设计计算 (14)2.2污水提升泵房 (17)2.2.1泵房设计计算 (17)2.3曝气沉砂池 (18)2.3.1.设计说明 (18)2.3.2池体设计计算 (18)2.4.1氧化沟的由来 (21)2.4.2氧化沟的结构 (21)2.4.3 Carrousel氧化沟处理污水的原理 (21)2.4.4设计参数 (22)2.4.5池体设计计算 (22)2.4.6曝气机设计选型 (23)2.4.7剩余污泥计算 (24)2.4.8计算校核 (25)2.5二沉池 (25)2.5.1设计说明 (25)2.5.2设计参数 (27)2.5.3池体设计计算 (27)2.6接触消毒池 (29)2.6.1设计说明 (29)2.6.2设计参数 (30)2.6.3设计计算 (30)第三章污泥处理构筑物设计计算 (33)3.1回流污泥泵房 (33)3.1.1设计说明 (33)3.1.2回流污泥泵房设计选型 (33)3.2剩余污泥泵房 (33)3.2.1设计说明 (33)3.2.2设计选型 (33)3.3污泥浓缩池 (34)3.3.1设计说明 (34)3.3.2设计参数 (34)3.3.3设计计算 (34)3.4污泥脱水间 (36)第四章污水处理厂平面与高程布置 (38)4.1平面布置 (38)4.1.1各处理单元构筑物的平面布置 (38)4.1.3辅助建筑物 (38)4.2高程布置 (38)4.2.1输送方式 (39)4.2.2污水管材料选取 (39)4.2.3设计充满度 (39)4.2.4设计流速 (39)4.2.5管径设计 (39)4.2.6最小设计坡度 (39)4.2.7污水管道的埋深深度 (40)4.3水力损失计算 (40)4.3.1水头损失计算 (40)4.3.2构筑物水力损失 (41)4.3.3总水力损失 (41)4.4高程计算 (42)4.4.1设计说明 (42)4.4.2设计计算 (42)第五章工程概预算 (43)5.1.基本建设投资 (43)5.2运行费用 (44)5.2.1运行成本估算 (44)第六章设计结论 (45)参考文献 (46)附录A 英文文献及译文 (48)附录B 设计图纸...................................... 错误！未定义书签。
某城镇污水处理厂毕业设计(DOC)
灵宝市污水处理厂初步设计摘要水是人类的生命之源，它孕育和滋养了地球上的一切生物，并从各个方面为人类服务。
但是，水环境中的淡水资源却很少，仅占总量的2.53%，而目前能供人类直接取用的淡水资源仅占0.22%。
加之自然水源的季节变化和地区差异，以及自然水体遭到的普遍污染，致使可能直接取用的优质水量日益短缺，难以满足人们生活和工农业生产日益增长的需求，因此保护和珍惜水资源，是整个社会的共同职责。
所以说水资源是基础性自然资源、战略性经济资源，水资源安全属于资源和经济安全。
80年代以来，废水生物处理新工艺的研究、开发和应用，已在全世界范围内得到了长足的进展，并出现了许多新型的废水生物处理技术。
这些新工艺有的已在国内外实际工程中得到了良好的应用，有的已显示出其良好的应用发展前景、得到广大的研究者和工程技术人员的关注并正在得到不断深入的研究，他们的共同特点是高效、稳定、节能，并具有对污染物去除的多功能性，大多具有脱氮除磷等深度处理的良好效能，并正朝自动化控制的方向发展。
近年来，随着灵宝市经济不断发展，人口和工业产值也随之增加，生活用水和工业用水的需求也急剧扩大，如此必然引起污水量的增加，一系列水环境问题将日益突出。
如不及时对产生的污水进行治理，那么灵宝市的水环境污染将严重下去，整个市区的生活环境和生态平衡都将受到更为严重的破坏，而这一切的恢复将是十分缓慢的，要为之付出的代价也十分昂贵。
因此，必须建立一座生活污水处理厂。
污水通过治理可以缓解和减轻水环境污染，缓解水资源的供需矛盾，为灵宝市的经济文化的发展创造有利条件。
工程的兴建，一方面为人们提供优质的生活污水，提高人们的生活质量和健康水平；另一方面是工业用水水质得到保障。
本设计是针对灵宝市的实际情况而设计的。
由于灵宝市生活用水的流量较大、SS含量高、氮磷等也都需要有一定的去除。
A2/O在同时脱氮除磷去除有机物的的工艺中，该工艺流程最为简单，总水力停留时间也少于同类其他工艺，在厌氧—缺氧—好氧交替运行下，丝菌不会大量繁殖，SVI一般小于100，不会发生污泥膨胀等优点。
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水污染控制工程课程设计题目：某城镇二级污水处理厂设计指导老师：设计人：班级：时间：设计任务书一、课程设计的目的本课程设计是水污染控制工程教学中的一个重要实践环节，要求综合运用所学的有关知识，掌握解决实际工程问题的能力，并进一步巩固和提高理论知识。
1复习和消化所学课程内容，初步理论联系实际，培养分析问题和解决问题的能力。
2了解并掌握污水处理工程设计的基本方法、步骤和技术资料的运用；3训练和培养污水处理的基本计算方法及绘图的基本技能；4提高综合运用所学理论知识独立分析和解决问题的能力；5了解国家环境保护和基本建设等方面的政策措施。
二、课程设计的任务根据已知资料，确定城市污水处理厂的工艺流程，计算各处理构筑物的尺寸，绘制污水处理厂的总平面布置图和高程布置图，并附详细的设计说明书和计算书。
三、设计内容及要求1 设计说明书：说明城市概况、设计任务、工程规模、水质水量、工艺流程、设计参数、主要构筑物的尺寸和个数、主要设备和辅助设备的型号和数量、处理构筑物平面布置及高程计算、参考资料；说明书应简明扼要，力求多用草图、表格说明，要求文字通顺、段落分明、字迹工整。
2 设计计算书：各构筑物的计算、主要设备（如水泵、鼓风机等）的选取、污水处理厂的高程计算等（各构筑物内部的水头损失查阅课本或手册，构筑物之间的水头损失按管道长度计算）；3 设计图纸：污水处理厂总平面布置图和高程布置图各一张。
总平面布置图中应表示各构筑物的确切位置、外形尺寸、相互距离；各构筑物之间的连接管道及场区内各种管道的平面位置、管径、长度、坡度；其它辅助建筑物的位置、厂区道路、绿化布置等；污水污泥处理高程中标出各种构筑物的顶、底、水面以及重要构件的设计标高、地面标高等。
四、设计资料1 城市概况——江南某城镇位于长江冲击平原，占地约6.3 km2，呈椭圆形状，最宽处为2.4 km ，最长处为2.9 km 。
2 自然特征——该镇地形由南向北略有坡度，平均坡度为0.5 ‰，地面平整，海拔高度为黄海绝对标高3.9～5 .0 m，地坪平均绝对标高为4.80 m。
属长江冲击粉质砂土区，承载强度7～11 t/m2，地震裂度6 度，处于地震波及区。
全年最高气温40 ℃，最低-10 ℃。
夏季主导风向为东南风。
极限冻土深度为17 cm。
全年降雨量为1000mm，当地暴雨公式为i = (5.432+4.383*lgP) / (t+2.583) 0.622，采用的设计暴雨重现期P = 1 年，降雨历时t = t1 + m t2, 其中地面集水时间t1为10 min，延缓系数m = 2。
污水处理厂出水排入距厂150 m的某河中，某河的最高水位约为4.60 m，最低水位约为1.80 m，常年平均水位约为3.00 m。
3 规划资料——该城镇将建设各种完备的市政设施，其中排水系统采用完全分流制体系。
规划人口：近期30000 人，2020年发展为60000 人，生活污水量标准为日平均200 L/人。
工业污水量近期为5000 m3/d，远期达10000 m3/d，工业污水的时变化系数为1.3，污水性质与生活污水类似。
生活污水和工业污水混合后的水质预计为：BOD5 = 200 mg/L，SS = 250 mg/L，COD = 400 mg/L，NH4＋-N = 30 mg/L，总P =4 mg/L；要求达到的出水水质达到国家污水综合排放二级标准。
规划污水处理厂的面积约25600 m2，厂区设计地坪绝对标高采用5.00 m，处理厂四角的坐标为：X — 0 ，Y — 140 ；X — 0 ，Y — 0 ；X — 175 ，Y — 140 ；X — 190 ，Y — 0 。
污水处理厂的污水进水总管管径为DN800，进水泵房处沟底标高为绝对标高0.315 m，坡度1.0 ‰，充满度h/D = 0.65。
初沉污泥和二沉池剩余污泥经浓缩脱水后外运填埋处置。
五、国家污水综合排放二级标准（GB8978-1996）对于城镇二级污水处理厂：BOD5 = 30mg/L，SS = 30 mg/L，COD= 120 mg/L，NH4＋-N = 25 mg/L，总P = 1 mg/L设计说明书一、环境条件见设计任务书的设计资料一栏。
二、处理工艺的选择该城镇污水处理厂主要是用于处理城区生活污水和部分工业废水，且对氮磷的去除有一定要求。
按《城市污水处理和污染防治技术政策》要求推荐，对脱磷脱氮有要求的城市，应采用二级强化处理，如A2 /O 工艺，A/O工艺，SBR 及其改良工艺，氧化沟工艺，以及水解好氧工艺，生物滤池工艺等。
故该设计应选取二级强化处理。
鉴于SBR 工艺具有以下特点：(1) 工艺流程简单、管理方便、造价低。
SBR 工艺只有一个反应器，不需要二沉池，不需要污泥回流设备，一般情况下也不需要调节池，因此要比传统活性污泥工艺节省基建投资30%以上，而且布置紧凑，节省用地。
由于科技进步，目前自动控制已相当成熟、配套。
这就使得运行管理变得十分方便、灵活，很适合小城市采用。
(2) 处理效果好。
SBR 工艺反应过程是不连续的，是典型的非稳态过程，但在曝气阶段其底物和微生物浓度变化是连续的(尽管是处于完全混合状态中)，随时间的延续而逐渐降低。
反应器内活性污泥处于一种交替的吸附、吸收及生物降解和活化的变化过程之中，因此处理效果好。
(3) 有较好的除磷脱氮效果。
SBR 工艺可以很容易地交替实现好氧、缺氧、厌氧的环境，并可以通过改变曝气量、反应时间等方面来创造条件提高除磷脱氮效率。
(4) 污泥沉降性能好。
SBR 工艺具有的特殊运行环境抑制了污泥中丝状菌的生长，减少了污泥膨胀的可能。
同时由于SBR 工艺的沉淀阶段是在静止的状态下进行的，因此沉淀效果更好。
(5) SBR 工艺独特的运行工况决定了它能很好的适应进水水量、水质波动。
均适用于本设计，故选取SBR工艺作为本设计的水处理工艺。
三、污水厂的主要工艺流程四、设计说明1、格栅和提升泵房设置方式：粗格栅→泵房→细格栅格栅的主要作用是将污水中的大块污物拦截，以免其对后续处理单元的机泵或工艺管线造成损害。
由于直棒式格栅运行可靠，布局简洁，易于安装维护，本工艺选用选择GH型回转格栅。
粗格栅运行参数：栅前流速 0.5m/s，过栅流速 0.8m/s，栅条宽度0.02m，格栅间隙数27，水头损失0.07m，每日栅渣量 0.823m3/d；细格栅运行参数：栅前流速0.5m/s，过栅流速0.8m/s，栅条宽度0.01m，栅前渠道水深0.4m，格栅倾角60o，栅间隙数66，水头损失 0.2m，每日栅渣量1.18m3/d。
对于新建污水处理厂，工艺管线可以充分优化，故污水只考虑一次提升。
污水经提升后入曝气沉砂池。
然后自流进入各工艺池，提升泵房采用2台（1用1备）型号为YC300LXL-780-11的水泵，其主要性能参数为：流量545-900m3/h，扬程9-12m，转速980r/min，效率78%。
配套电机及功率为Y250M-37，叶轮名义直径335mm。
其中细格栅计算草图如下：进水2、沉砂池沉砂池主要用于去除污水中粒径大于0.2mm ，密度2.65t/m3的砂粒，以保护管道、阀门等设施免受磨损和阻塞。
平流式沉砂池具有构造简单、处理效果好的优点。
故本设计采用平流式沉砂池。
污水经立式污水污物泵提升后经细格栅，进入钟式沉砂池，共两组对称与提升泵房中轴线布置，每组分为两格。
设计参数为：沉砂池长度9m ，池总宽1.2m ，有效水深0.96m ，贮砂斗容积0.178m 3（每个沉砂斗），斗壁与水平面倾角为600，斗高0.68m ，斗部上口宽1.23m 。
草图如下：进水3、SBR反应池本设计中为进水时间1 h ；曝气时间h ；有效反应时间4 h ；沉淀时间1 h ；滗水时间0.5 h ；除磷厌氧时间0.5 h ，一个周期T N=6 h ，经过预处理的污水由配水井连续不断地进入反应池，反应区内安照“进水、闲置、曝气、沉淀、滗水”程序运行。
本设计采用SBR反应池4座，并联运行，运行周期为6h。
单座尺寸为55m*15m*5.5m.反应池内最小水深2.9m,滗水高度1.1m，内设微孔曝气头。
采用膜片式微孔曝气器，每个服务面积A f=0.5m2，曝气头个数为1000个；滗水高度1.56m，滗水速度为0.694 m3/s4、污泥泵房污泥泵选三台（两用一备），单泵流量Q>2Q w/2＝13.07m3/h。
选用1PN污泥泵Q 7.2－16m3/h，H：14-12m，功率为3kW4、污泥浓缩池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。
设计参数：设计流量：每座1344.4kg/d，采用2座，进泥浓度10g/L，污泥浓缩时间13h，进泥含水率99.0%，出泥含水率96.0%，池底坡度0.08，坡降0.28m，贮泥时间4h，上部直径9.5m，浓缩池总高4.68m，泥斗容积5.86m3。
5、贮泥池设贮泥池1座，贮泥时间12h，选用1PN污泥泵两台，一用一备，单台流量Q7.2～16m3/h，扬程H14～12mH2O，功率3kW。
五、处理构筑物平面布置处理构筑物是污水处理厂的主体建筑物，应根据各构筑物的功能和水力要求结合当地地形地质条件，确定它们在厂区内的平面布置。
污水处理厂的辅助建筑物有泵房，鼓风机房，办公室等，其建筑面积按具体情况而定，在污水厂内主干道应尽量成环，方便运输，保证30%以上的绿化。
为保证污水处理厂二期扩建工程的实施，在厂区留有一定面积的扩建空间。
六、高程计算为了降低运行费用和使维护管理，污水在处理构筑物之间的流动以按重力流考虑为宜，厂内高程布置的主要特点是先确定最大构筑物的地面标高，然后根据水头损失，通过水力计算，递推出前后构筑物的各项控制标高。
根据SBR反应池的设计水面标高，推求各污水处理构筑物的水面标高，根据和处理构筑物结构稳定性，确定处理构筑物的设计地面标高。
七、参考资料《水污染控制工程实践教程》彭党聪主编化学工业出版社；《水污染控制工程》下册高廷耀、顾国维主编高等教育出版社；《给水排水工程专业工艺设计》南国英张志刚主编化学工业出版社《环保设备设计与应用》罗辉主编高等教育出版社《给水排水设计手册（第九册）专用机械》第三版上海市政工程设计研究院主编中国建筑工业出版社设计计算书一、设计流量生活污水量：近期 30000*200*10-3*1.7 =10200（m3/d）；远期 60000*200*10-3*1.7=20400（m3/d）工业污水量：近期 5000*1.3 =7500（m3/d）；远期 10000*1.3 =13000（m3/d）总污水量：近期 17700（m3/d）；远期 33400（m3/d）取设计污水量Q = 20000（m3/d）二、粗格栅1、 主要设计参数栅条宽度：S = 10 mm栅条间隙宽度：b = 20 mm过栅流速：v = 0.8 m/s栅前渠道流速：0.5 m/s栅前渠道水深：h = 0.5 m格栅倾角：α= 60°数量：1座单位栅渣量：W 1=0.07m 3/103m 32、 工艺尺寸（1） 格栅尺寸过栅流量：Q 1= Q = 20000 m 3/d = 0.2314 m 3/s 栅条间隙数：02.268.05.002.060sin 2314.0sin =⨯⨯︒⨯==bhv Q n α 取n=27 有效栅宽：B= S （n+1）+ bn = 0.01*（27+1）+ 0.02*27 = 0.8m进水渠道宽度B 1：要求B 1*h*v > Qmax取B 1= 0.6 m（2） 格栅选择选择GH 型回转格栅； 实际过流速度：77.0275.002.060sin 2314.0sin =⨯⨯︒⨯==bhn Q v α m 3/s（3） 栅渠尺寸栅渠过水断面S ：04635.02314.0===v Q S m 2 栅槽总长度：m tg tg H l l L 78.3208.05.00.1029.00577.05.10.1121=︒++++=++++=α 其中m tg tg B B l 0577.06026.08.0211=︒⨯-=⨯-=α m l l 029.020577.0212=== H 1= h +h 2= 0.5+0.3 = 0.8 mα1指进水渐宽部分的展开角，一般取20°3、 水头损失格栅断面为锐边矩形断面（β=2.42）格栅水头损失：m k g v b S h 07.0360sin 8.9277.0)02.001.0(42.2sin 2)(275.0275.01=⨯︒⨯⨯⨯⨯=⋅⋅⋅=αβ 栅后槽总高度：H= h+ h 1+ h 2 =0.5+0.07+0.3 = 0.87 mh 2 — 栅前渠超高，一般取0.3 m4、 栅渣量对于栅条间距b=20.0mm 的中格栅，城市污水中取每单位体积污水拦截污物为W 1=0.07m 3/103m 3，每日栅渣量为823.07.1100007.02314.0864001000864001=⨯⨯⨯==z K QW W K z — 生活污水流量的总变化系数拦截污物量大于0.3m 3/d ，宜采用机械清栅。