1、摘要本设计为互助县西山乡给水工程设计，设计规模规划到2023年，城镇人口规模为6.4万人，生活用水量标准200L/人d，日工业产值248万元，万元产值耗水量70m3/万元，日变化系数1.1，未预见漏失量20Q最高日计。互助县西山乡给水工程的设计，是为了满足该镇近期和远期用水量增长的需要而新建的，最终设计规模为4.1万立方米/天给水处理厂设计，主要是给水处理厂的设计。该厂的水源为地表水，水质情况良好，水厂位于城镇西边4公里处，原水水质其中的一些常规的检测项目已经符合生活饮用水水质卫生规范（2001）的要求，需要处理的为水源的浊度、残渣及细菌的灭活。由于水源具有较高含沙量，则该水厂的处理工艺流程设
2、计为二级沉淀工艺流程。即：原水预沉混凝沉淀过滤消毒二级泵站用户。主要构筑物为：取水泵站、简单辐流沉淀池、机械搅拌澄清池、普通快滤池、清水池、配水池和二级泵站。水厂布置采用了直角型，水厂地面标高0.00米，服务水头60米，Kh为1.42。水厂出厂水质统一按现行国家生活饮用水卫生标准考虑。水厂出厂水压为0.38MPa，以满足接管点处服务水头0.25MPa。本设计最终成果主要包括设计计算说明书和图纸两部分。设计计算说明书中包括取水工程，水源选择、取水方案及位置的确定、取水构筑物形式和设备设计计算并绘图；输水工程， 输水管道工程的设计计算并绘图；给水处理工程，净水厂场址选择、水处理方案的比较与选择、建
3、构筑物型式、尺寸及设备选择计算并绘图。图纸部分共14张，包括：给水工程设计说明、互助县西山乡诚镇总体规划图、互助县西山乡给水厂总平面布置图、互助县西山乡给水厂管网布置图、管网节点详图、二级泵站平剖面图、机械澄清池平剖面图、机械搅拌澄清池剖面图、取水泵房平剖面图、清水池平剖面图、普通快滤池平剖面图、清水池平剖面图、给水厂高程布置图、加氯间平剖面图、简易辐流式预沉池平剖面图。1ABSTRACTThis design for the huzhu county west rural water supply project design, planning design size by 2023, t
4、he urban population size of 64000 people, living water consumption standard 200 l/d, industrial output 2.48 million yuan, ten thousand yuan output value of water consumption of 70 m3 / ten thousand yuan, the daily variation coefficient is 1.1, the highest unforeseen loss 20% Q meter. Huzhu county we
5、st rural water supply engineering design, it is in order to meet the needs of the towns immediate and long-term water consumption growth and new, the scale of final design for 41000 m3 / day water treatment plant design, mainly is the water treatment plant design. The plants water to surface water,
6、water quality in good condition, water plant is located in the town to the west of 4 km, the raw water quality testing some of the regular project has with the life drinking water health standards (2001), to deal with the water turbidity, particles and bacteria inactivated. Because the water has hig
7、h sediment concentration, the water treatment process design for the secondary precipitation process. Namely: the raw water to forecast heavy - coagulation - sedimentation, filtration and disinfection to secondary pump station, the user. Main structure is: water intake pumping station, simple radial
8、 flow sedimentation tank, mechanical stirring clarification pool, ordinary fast filter and secondary pumping station, clear water reserviors, with pools. Plant layout adopted rectangular type, water surface elevation 0.00 meters, 60 meters, service head Kh is 1.42. Water factory unified according to
9、 the current national health drinking water water quality standard. Water factory water pressure of 0.65 MPa, 0.63 MPa to meet take over point service head.This design final results mainly includes two parts design specifications and drawings. Included in the design and calculation specification for
10、 water projects, water source selection, the determination of water intake scheme and position, water intake structure form and the equipment design calculations and drawings; Water delivery engineering, pipeline engineering design calculations and drawings; Water treatment engineering, water treatm
11、ent works site selection, scheme comparison and selection of water treatment, building structure type, size and equipment selection calculation and drawing.Drawing part, a total of 15 pieces, including: water supply engineering design instructions, huzhu county, west shan cheng town overall plan, hu
12、zhu county west rural water-supply plant general layout, huzhu county west shan to the water pipe network layout, detail of network nodes, and the secondary pump station flat section, clear understand mechanical section, profile of mechanical stirring clarification pool, water pump room flat section
13、, clear water reserviors flat profile, quick filter ordinary flat section, clear water reserviors flat profile, for water elevation layout, flat section between chlorine and heavy understand section simple radial flow.1设计总说明ISpecificationII目 录31 工程概况11.1设计原始资料11.1.1地理位置11.1.2自然环境11.1.3气候资源11.1.4水资源1
14、1.2工程设计11.2.1设计任务11.2.2 设计内容12 设计用水量计算22.1各项用水量计算22.1.1综合生活用水量22.1.2工业企业生产用水量22.1.3未预见水量和管网漏失水量22.1.4消防用水量32.1.5最高日用水量32.2设计流量确定32.2.1确定设计流量33取水工程设计43.1给水水源选择43.2取水构筑物的选型43.3取水泵站（一级泵站）53.3.1集水间的设计53.3.2泵房布置53.3.3起重设备的选型与布置53.3.4泵房高度53.4取水水泵选配及一级泵站工艺布置53.4.1扬程计算53.4.2选泵63.4.3水泵机组的布置63.4.4起重设备的选型和布置73
15、.4.5泵房高度计算73.4.6管道计算73.4.7通风与抽水设备计算73.5取水头部设计计算83.5.1设计计算内容83.6集水间设计计算83.6.1集水间设计84净水工程设计94.1工艺流程94.2构筑物的选取94.2.1简单辐流沉淀池94.2.2混凝剂的的选择和投加94.2.3机械搅拌澄清池94.2.4普通快滤池94.2.5清水池94.2.6吸水池94.2.7二级泵站104.2.8加药加氯间104.3简易辐流式预沉池104.3.1辐流式预沉池优缺点104.3.2辐流式预沉池设计114.4机械搅拌澄清池计算134.4.1第二反应室设计134.4.2导流室154.4.3分离室154.4.4池深计算164.4.5配水三角槽174.4.6第一反应室174.4.7容积计算184.4.8进水系统184.4.9集水系统184.4.10排泥及排水计算204.4.11机械搅拌澄清池，搅拌机计算204.4.12刮泥机计算214.5通快滤池计算224.5.1滤速234.5.2滤池面积及尺寸234.5.3滤池布置234.5.4滤料234.5.6配水系统244.5.7洗砂排水槽274.5.8滤池各种管渠计算284.5.9冲洗水泵
