(完整版)污水处理厂毕业设计(包含CAD大图).doc

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 设计范围.....................................................................................7

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

2.3.10 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

3.4.2 沉砂室尺寸计算.......................................................................27

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

3.7.6 选型...........................................................................................53

3.8 接触池.............................................................................................53

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

5 污水处理厂总体布置 .........................................................................67

5.1.1 平面布置的一般原则...............................................................67

5.1.2 平面布置................................................................................67

总 结......................................................................................................70

参考文献..................................................................................................72

致 谢......................................................................错误！未定义书签。

附 录......................................................................................................73