浙江省松阳县排水工程设计毕业论文
2021-07-13 00:23:59
摘 要
松阳县位于浙江省西南部,介于北纬28°14′-28°36′和东经119°10′-119 °42 ′之间。该城区地处松古平原,地势较平坦,有松阴溪由东北向西南流过,此河流也可供雨水排放使用。松阳县城区尚无排水管涵,生活污水直接排入城区北面的松阴溪。据监测分析,松阳县城区以上水质符合二类水质功能区标准,以下则未达三类水体标准,部分污染物质超标。
根据松阳县总体规划,近期(2020年)松阳县主城区总人口为11万人,远期(2030年)主城区总人口为15万人。本设计拟规划分流制排水系统,由于城区面积较小,所以不需要采用分区排水,整个主城区只有一个排水流域。污水管网只设一条主干管,将污水收集至污水处理厂然后进行后续处理;雨水管网拟采用分散出水口的布置形式,顺坡铺设,分别由四条主干管就近排入松阴溪。本设计中污水处理厂的近期规模为27810m3/d,远期规模为42557m3/d。本设计采用的生物处理工艺是奥贝尔氧化沟活性污泥法,出水符合国家一级B排放标准。本设计中污泥处理的方法是浓缩脱水,然后外运进行深度处理。
本次设计提交的图纸主要有污水、雨水管网的平面布置图,污水主干管纵断面图,污水处理厂的平面布置图和高程布置图,构筑物的工艺图有提升泵房、奥贝尔氧化沟、二沉池。
关键词:松阳县;污水管网;雨水管网;污水处理;氧化沟
Abstract
Songyang county is located in the southwest of Zhejiang Province, between 28 degrees north latitude 14 degrees 36 '-28' and '-119 10 degrees east longitude 119 degrees 42'. The city is located in the song of the ancient plains, the terrain is relatively flat, there is a Pine River from the northeast to the southwest flow, the river can also be used for rainwater drainage. Songyang County, there is no drainage pipe culvert, domestic sewage directly discharged into the city on the north side of the pine river. According to monitoring and analysis, Songyang county above the water quality compliance with the functional areas of the two categories of water quality standards, the following is not up to three categories of water standards, part of the pollution substances exceeded.
According to the overall planning of Songyang County, the recent (2020) the total population of Songyang County, the total population of 110 thousand people, long-term (2030) the total population of 150 thousand people in the main city. The design of the proposed planning division flow system, due to the smaller urban area, so do not need to use the partition drainage, the entire city is only a drainage basin. Sewage pipe network only a main tube, the collection of sewage to the sewage treatment plant and subsequent processing; rainwater pipe network intends to use dispersed layout of outlet, along the slope laying, respectively by four main tube discharged to the nearby pine Yin Xi. The design of the sewage treatment plant in the near future size of 27810m3/d, long-term scale of 42557m3/d. This design uses the biological treatment process is the Obel oxidation ditch activated sludge process, the water in line with the national level B emission standards. The design methods of sludge treatment in concentrated dehydration, and then transported to the depth of processing.
Submit the design drawings are the layout of sewage and rainwater pipe network, sewage main pipe profile, the sewage treatment plant layout and elevation layout, build the process diagram to upgrade pumping stations, Orbal oxidation ditch and the secondary clarifier.
Key Words:Songyang city; the Sewage pipe network; the rainwater pipe network; sewage treatment; oxidation ditch.
目录
摘要 I
Abstract II
1绪论 1
2设计说明书 2
2.1原始资料 2
2.1.1自然条件 2
2.1.2城市概况 3
2.1.3设计任务 3
2.2设计依据 3
2.3排水体制 4
2.5污水管道系统设计 5
2.5.1污水管网设计内容 5
2.5.2污水管网定线和面积划分 5
2.5.3污水管网设计流量 6
2.5.4污水管网水力计算 7
2.5.5管材及管道用量 9
2.5.6污水管道平面与纵断面图 10
2.6雨水管道系统设计 10
2.6.1雨水管网设计内容 10
2.6.2暴雨强度公式 10
2.6.3雨水管道布置方案 10
2.6.4雨水管网定线和面积划分 11
2.6.5雨水管网设计流量 11
2.6.6雨水管网水力计算 11
2.6.7雨水管道管材及管道用量 12
2.7污水处理厂设计 13
2.7.1工程规模 13
2.7.2设计水质 13
2.7.3污水厂工艺流程 13
2.7.4泵前中格栅 14
2.7.5污水提升泵房 15
2.7.6泵后细格栅 15
2.7.7沉砂池 16
2.7.8计量堰 16
2.7.9厌氧池 16
2.7.10奥贝尔氧化沟 17
2.7.11二沉池 19
2.7.12综合井 21
2.7.13接触消毒池 21
2.7.14加氯间和氯库 22
2.7.15贮泥井 23
2.7.16污水处理厂平面布置 23
2.7.17污水处理厂高程布置 23
2.8排水工程投资估算 24
2.8.1污水处理厂投资估算 24
2.8.2单位水成本费估算 24
2.8.3管道工程投资估算 24
3设计计算书 25
3.1污水管道系统设计计算 25
3.1.1排水体制 25
3.1.2确定排水区界,划分排水流域 25
3.1.3污水管道定线 26
3.1.4控制点的确定 27
3.1.5控制点埋深和覆土厚度的确定 27
3.1.6污水设计流量的确定 27
3.1.7污水设计管段及设计流量的确定 29
3.1.8污水管网水力计算 30
3.1.9污水管道平面图及总剖面图的绘制 33
3.2雨水管道系统设计计算 33
3.2.1排水流域划分 33
3.2.2雨水管道定线 33
3.2.3暴雨强度公式的确定 33
3.2.4雨水管道设计流量 35
3.2.5雨水管网水力计算 35
3.3污水处理厂设计计算 36
3.3.1设计水量 36
3.3.2设计水质 38
3.3.3工艺流程的确定 39
3.3.4格栅 40
3.3.5污水提升泵房 43
3.3.6沉砂池 45
3.3.7计量堰 46
3.3.8厌氧池 47
3.3.9氧化沟 48
3.3.10二沉池 57
3.3.11综合井 62
3.3.12接触消毒池 65
3.3.13加氯间与氯库 67
3.3.14污泥处理设计计算 68
3.3.15污水处理厂平面布置 70
3.3.16污水处理厂高程计算 72
3.4排水工程投资估算 76
3.4.1污水处理厂估算 76
3.4.2单位水成本费估算 79
3.4.3管道工程投资估算 80
4结论 83
参考文献 84
附录 85
附表1 街区面积流量 86
附表2 污水干管设计流量计算表 89