目 录
中文摘要................................................................................................................................................... 1 英文摘要................................................................................................................................................... 2 1 绪 论................................................................................................................................................. 3 2 设计说明书 ........................................................................................................................................... 5
2.1 概述 ........................................................................................................................................... 5
2.1.1 设计题目 ....................................................................................................................... 5 2.1.2 设计任务 ....................................................................................................................... 5 2.1.3 设计进出水质 ............................................................................................................... 5 2.1.3.1 设计进水水质 ............................................................................................... 5 2.1.3.2 设计出水水质 ............................................................................................... 6
2.2 设计内容 ............................................................................................................................... 6 2.3 设计原则 ............................................................................................................................... 6 2.4 工艺方案的确定 ................................................................................................................... 7
2.4.1 方案对比 ................................................................................................................... 7
2.4.1.1 污水处理水质水量分析 ............................................................................... 7 2.4.1.2 厌氧生物处理工艺的比较与选择 ............................................................... 7 2.4.1.3 主体工艺的选择与方案确定 ....................................................................... 9
2.5 污水处理构筑物设计说明 ................................................................................................. 10
2.5.1 高浓度废水构筑物 ............................................................................................... 10
2.5.1.1 过滤器 ......................................................................................................... 10 2.5.1.2 匀质池 ......................................................................................................... 11 2.5.1.3 膨胀颗粒污泥床反应器（EGSB） ............................................................. 11 2.5.1.4 加药间 ......................................................................................................... 12 2.5.2 低浓度废水构筑物 ................................................................................................. 13
2.5.2.1 格栅 ............................................................................................................. 13 2.5.2.2 泵房 ............................................................................................................. 14 2.5.3 沉砂池 ................................................................................................................... 15 2.5.4 低浓度废水匀质池 ............................................................................................... 16 2.5.5 A/O池 .................................................................................................................... 16 2.5.6 生物流化床 ........................................................................................................... 17 2.5.7 二沉池 ................................................................................................................... 18 2.6 污泥处理构筑物设计说明 ............................................................................................... 18
2.6.1 污泥处理的意义 ................................................................................................... 19 2.6.2 污泥处理流程 ....................................................................................................... 19 2.6.3 污泥泵房 ............................................................................................................... 19 2.6.4 污泥浓缩脱水车间 ............................................................................................... 20 2.7 污水处理厂平面及高程布置 ........................................................................................... 21
2.7.1 平面布置 ............................................................................................................... 21
2.7.1.1 布置的原则 ................................................................................................. 21 2.7.1.2 布置的内容 ................................................................................................. 21
2.7.2 高程布置 ................................................................................................................. 22
2.8.2.1 高程布置的原则 ......................................................................................... 22 2.7.2.2 计算内容 ..................................................................................................... 22 2.7.2.3 计算方法 ..................................................................................................... 23
2.8 组织结构与人员编制 ......................................................................................................... 24 3 计算说明书 ..................................................................................................................................... 25
3.1 设计依据 ............................................................................................................................. 25 3.2 设计进出水水质 ................................................................................................................. 25 3.3 设计流量 ............................................................................................................................. 26 3.4 高浓度废水处理构筑物设计计算 ..................................................................................... 27
3.4.1 事故池设计计算 ................................................................................................... 27
3.4.1.1 事故池设计参数 ......................................................................................... 27 3.4.1.2 设计计算 ..................................................................................................... 27 3.4.2 匀质池设计计算 ................................................................................................... 28 3.4.3 过滤装置选择 ....................................................................................................... 28 3.4.4 膨胀颗粒污泥床（EGSB）工艺设计计算 ......................................................... 29 3.4.4.1 设计说明 ..................................................................................................... 29 3.4.4.2 设计水质水量 ............................................................................................. 29 3.4.4.3 EGSB设计计算 ............................................................................................ 29 3.4.4.4 EGSB构筑物主体设计计算 ........................................................................ 30 3.4.4.5 反应器的升流速度 ..................................................................................... 31 3.4.4.6 三相分离器设计 ......................................................................................... 31 3.4.4.7 配水系统设计 ............................................................................................. 34 3.4.4.8 布水槽的设计 ............................................................................................. 35 3.4.4.9 进出水系统设计 ......................................................................................... 35 3.4.5.0 排泥系统设计 ............................................................................................. 35
3.4.5.1 排泥系统设计 ............................................................................................. 36
3.4.5.2 产气量计算 ................................................................................................. 36
3.4.5.3 气水分离器 ..................................................................................................... 37
3.5 低浓度废水构筑物设计计算 ............................................................................................. 37
3.5.1 格栅设计 ................................................................................................................. 37
3.5.1.1 设计参数 ..................................................................................................... 37 3.5.1.2 设计计算 ..................................................................................................... 37 3.5.2 提水泵房设计 ......................................................................................................... 38
3.5.2.2 设计计算 ..................................................................................................... 39 3.5.3 细格栅的设计计算 ............................................................................................... 39
3.5.3.1 细格栅设计参数 ......................................................................................... 39 3.5.3.2 细格栅计算 ................................................................................................. 39 3.5.3.3 格栅间尺寸的确定 ..................................................................................... 40 3.5.4 旋流沉沙池 ............................................................................................................. 40
3.5.4.1 设计参数 ..................................................................................................... 41 3.5.4.2 设计计算 ..................................................................................................... 41 3.5.5 A/O工艺池体设计 .................................................................................................. 41
3.5.5.1 设计参数： ................................................................................................. 41 3.5.5.2 设计计算 ..................................................................................................... 41 3.5.5.3 A/O 池主要尺寸计算 ................................................................................. 42 3.5.5.4 剩余污泥量 ................................................................................................. 42 3.5.6 生物流化床设计计算 ........................................................................................... 43
3.5.6.1 设计参数： ................................................................................................. 43 3.5.6.2 载体的选择和计算 ..................................................................................... 45 3.5.6.3 流化床所需生物浓度计算 ......................................................................... 45
3.5.6.4 载体分离器设计计算 ................................................................................. 46
3.5.6.5 供氧设计及计算 ......................................................................................... 46 3.5.7 辐流式二沉池 ....................................................................................................... 48
3.5.7.1 设计参数 ..................................................................................................... 48 3.5.7.2 设计计算 ..................................................................................................... 48 3.5.8 污泥泵房 ................................................................................................................. 49
3.5.8.1 构筑物 ......................................................................................................... 49 3.5.8.2 主要设备 ..................................................................................................... 49 3.5.9 污水厂平面布置 ..................................................................................................... 50
3.6 污水厂高程布置 ................................................................................................................... 51
3.6.1 概述 ......................................................................................................................... 51 3.6.2 构筑物之间管渠的连续及水头损失计算 ............................................................. 51 3.6.3 构筑物之间管渠的连续及污泥损失的计算 ......................................................... 55 3.6.4 高程的确定 ............................................................................................................. 56
结 论................................................................................................................................................... 57 致 谢................................................................................................................................................... 59 [参考文献]............................................................................................................................................. 59
1
摘 要：本次设计任务为某市污水处理厂工艺设计。在设计前对该市的自然条件和
水文情况有了基本认识。详细分析了进水的水质水量，并依据国家的标准 制定了出水水质。在此基础上，通过查阅设计手册及相关技术规范的途径， 确立处理工艺，并对单体构筑物进行设计和计算，针对本次废水具有高低 两种浓度的特点，本次设计工艺首先分别对高低浓度废水进行预处理，然 后再混合一起处理的思路。针对废水水质含氮高的特点，采用国内主流的 脱氮工艺，使其出水水质达到国家标准。本次设计为二期A部份，因此要 考虑到远近期相结合的特点，某些构筑物要预留给后面的工程。 关键词：膨胀颗粒污泥床反应器（EGSB） A/O工艺 生物流化床 脱氮 好氧处理
!未定义的书签，错误！未指定书签。
1
2
Abstract：The graduation design is a paper of sewage treatment plant process design in
XXX city. After researching the natural conditions and hydrological condition of the city, we started to do the works. According to study the standards set by the state, we discuss the quality of the effluent water and anaysis the quality and quantity of the water. On the basis of it, We also ensure the sewage treatment plant process and design any single stucture by searching the technical specifications and any other manuals.There are two kinds of waste water in this mission. So we decided to set a pretreatment partly, and then treat them together when they have a same property. As a number of nitrogen in this sewage, we use the method normaly in our country and it will make the water up to the standard. This misssion was second phase of A part so we need to build some sturctures for later in order to considerd the time plan of the projedt.
Keywords：expended granular sludge bed Anoxic-Oxic biological fluidized
bed denitrification Aerobic treatment
2