摘 要

该设计为南充市某自来水厂工程设计。给厂设计用水量为15万吨。水厂所在地高程约为297.00米。结合原水水质及经济、考虑远期规划，给水厂工艺按一期设计。处理水质达Ⅲ类标准，污染物较少，考虑水厂自用水，水厂实际生产水量为15万吨。工艺上按照：原水——配水井——预臭氧接触池——网格絮凝池——平流沉淀池——V型滤池——主臭氧接触池——活性炭滤池——清水池——送水泵房——市政管网的流程进行。此方案的优点在于采用深度处理，极大地提高水质；采用V型滤池，反冲洗水量大大减少，反冲洗周期增长，节水、节省运行费用。具体水厂处理选择工艺：絮凝池选用网格絮凝池，共6座；沉淀池选用平流沉淀池，共3座；过滤选择V型滤池，共8座；深度处理选用臭氧——活性炭联用工艺，臭氧接触池2座，活性炭滤池8座；消毒选择液氯消毒，设加氯间；清水池设2座。厂区V型滤池、活性炭滤池反冲洗水，由于所含泥沙较少且污染不重，设排水管排入市政污水管道，厂区沉淀污泥经污泥浓缩、脱水处理后泥饼外运。

关键词：给水工程、水厂设计、深度处理

Abstract

This design is a waterworks design for Nanchong. The water design consumption is about 150,000 tons. The water plant is located at an elevation of about 297.00 meters. Combined with raw water quality and economy, consider the long-term planning, the waterworks design will be finished in the first stage. The water got a Ⅲclass quality standards with few pollutant. Considering the supply of waterworks, its actual production is 150,000 tons.

According to the process: raw water - water distribution wells - pre-ozone contact pool - grid flocculation tank - horizontal flow sedimentation tank - V-type filter - the main ozone contact pool - activated carbon filter - clean pool - water Pump station - municipal pipe network process. The advantage of this program is the use of deep processing, greatly improve the water quality; the use of V-type filter, greatly reduce the backwash water quantity, increase the backwashing cycle, save water and save operating costs. The water treatment process selection: six grid flocculation tank; three horizontal flow sedimentation tank; eight V-type filter; two main ozone contact pool, eight activated carbon filter ; disinfection choice liquid chlorine disinfection, set chlorine; two clear pool.

The backwash water from the plant V filter and activated carbon filter, because the sediment is less and the pollution is not heavy, the drain pipe is put into the municipal sewage pipe. The sludge in the plant is transported by sludge concentration and dehydration, and the mud cake is transported out of the waterworks.

Key words: water supply engineering, water plant design, advanced treatment

目 录

第一章 设计说明书1

1.1设计资料1

1.1.1设计任务1

1.1.2设计原始资料1

1.2给水处理工艺流程和给水处理构筑物的选择1

1.2.1混合1

1.2.2絮凝2

1.2.3沉淀2

1.2.4过滤3

1.2.5深度处理4

第二章 设计计算书7

2.1配水井7

2.1.1已知条件7

2.1.2设计计算7

2.2药剂投配和混合设施7

2.2.1药剂投配7

2.2.2药剂仓库9

2.2.3管式静态混合器9

2.3网格絮凝池10

2.3.1已知条件10

2.3.2设计计算10

2.4平流沉淀池13

2.4.1已知条件13

2.4.2设计计算13

2.5V型滤池16

2.5.1已知条件16

2.5.2设计参数16

2.5.3设计计算17

2.6臭氧——活性炭联用深度处理28

2.6.1已知条件29

2.6.2臭氧接触池设计计算29

2.6.3活性炭滤池设计计算32

2.7消毒36

2.7.1已知条件36

2.7.2设计计算36

2.8清水池37

2.8.1已知条件37

2.8.2设计计算37

2.9送水泵房40

2.9.1已知条件40

2.9.2泵的选型40

2.9.3机组布置和基础计算41

2.9.4附属设备42

2.9.5吸水和压水管路计算43

2.10吸水井43

2.11污泥处理系统44

2.11.1已知条件44

2.11.2污泥处理系统数据计算45

2.11.3排水池46

2.11.4排泥池47

2.11.5污泥浓缩池47

2.11.6污泥调节池49

2.11.7脱水机房50

2.12平面布置51

2.12.1平面布置原则51

2.12.2厂区绿化与道路51

2.12.3水厂占地面积52

2.13附属建筑物52

2.13.1生产管理及行政办公用房52

2.13.2化验室52

2.13.3维修车间52

2.13.4车库52

2.13.5仓库52

2.13.6食堂及宿舍52

2.13.7浴室及锅炉房53

2.13.8传达室53

2.13.9堆场53

2.14高程53

2.14.1各构筑物之间连接管道的水头损失计算53

2.14.2各净水构筑物的水头损失55

2.14.3各构筑物的水面标高56

2.14.4污泥处理系统之间连接管道的水头损失计算56

2.14.5各构筑物的水头损失57

2.14.6各构筑物的水面标高57

第三章 造价估算58

参考文献61

附录62

A 图纸目录62

B 设计总说明62

C 南充市某自来水厂总平面图62

D 南充市某自来水厂管线布置图62

E 南充市某自来水厂高程图62