珠海市供水工程设计要求

videoconference, Secretary of the provincial Committee of Xia Baolong stressed: this year is the five water treatment 357 timetables for three years to resolve outstanding issues, obviously worked, victory of the year. The Countys departments at all levels must firmly establish the guanghui is gold and silver green development concept, convinced that Castle is not relaxed, always maintaining strategic ability and strong determination to improve the environment, consistently playing well five water treatment of winning the war, ever-higher levels of comprehensive well-off society was built. (A) lay the sewage uphill battle. This year we will river water quality improved at the county level, up to five this basic objective grasp of pollution control that focus, with the focus on three things: a good job, clear rivers reaching the County created. Organization look back special inspection, the County garbage River, black and odorous River is Dragnet investigation, timely rectification of problems found in place firmly to prevent river pollution rebound. In accordance with the one-stop strategy, improving the inferior five water quality monitoring stations work this year to ensure the Elimination of 1 provincial control, five water quality section 3 municipalities controlled deterioration, ensure the creation this year of clear rivers standards. Second, pay special attention to pollution-cutting construction of nanotubes. Intercepting nanotubes are the basis of pollution of water source engineering, engineering, matter of success or failure of water management. Urban sewage treatment, to improve effluent from sewage treatment rate, running accuracy, compliance requirement, speed up the towns support network construction, is focusing on nanotubes home last meters question. Domestic sewage treatment in rural areas, this year is the final year of the three-year action, determination to fight and the momentum around, ending the battle on which fully to ensure the realization of all County 648 formed village coverage. Also, be sure to attach importance to focus on rural domestic wastewater treatment facility operation and management, ensure that wastewater treatment facility up and running, role play, avoid the Sun problem. Third, pay special attention to the River Lake pond desilting operation. Provinces now have focused on pollution control of water go to dig up mud, as the deepening water of this years plays. Next, to jump-start an investigation line touches work, implementation plan according to the priorities and the programme of work, in accordance with the one river one policy requires detailed cleaning, dredging plan, planning ahead of time cleaning out mud way out, according to local conditions to do sludge, promote scientific resource utilization of silt and mud. (B) the heavy regulation of heavily polluting industries. Pollution of water must grab the source, wastewater is primarily the source of backward production capacity, increase the intensity of珠海市供水工程设计、施工及管材选用规定（试行：七）1 总则1.1 为进一步提高我市供水保障率和供水质量，提高城市供水设施建设和管理水平，实现优质供水和节约用水，根据国家及行业的有关规定，总结供水管理经验，结合我市实际情况制定本规定。1.2 本规定适用于珠海市行政区内的室外及室内新建、扩建或改建的供水工程设计、施工及管材选用。1.3 从事我市供水工程设计、施工的单位，在执行国家现行的有关标准、规范的基础上，尚需执行本规定。1.4 本规定从2008年8月1日起试行2 一般要求2.1 承接本市市政供水管道及建筑给水设计单位必须持有相关的设计资质，项目设计前应了解管网现状，各设计单位应严格按照国家、地方、行业设计标准和规范进行设计,做到方案合理、输配水安全可靠、施工安装、管理维修方便。2.2 市政供水管道建设的可行性研究及设计、建筑给水方案设计及施工图设计，须经市建设行政主管部门、市水行政管理部门会同有关部门进行审查，并应当征求供水企业的意见。2.3 供水工程必须纳入工程质量监督范围。供水工程竣工后，应当由建设单位组织有关部门和供水企业验收，并按规定报备案，验收合格后方可供水；未经验收或者验收不合格的，不得投入使用。2.4 新旧管连接应有详细的连接设计方案，并考虑有关费用(工程费、管网水损费以及相配合的人工、机械等费用)，应将有关费用包含在新建管道工程预算中。3 管材选用3.1 为了适应我市整体提高供水水质，实现优质供水的目标，新建室外埋地供水管道应根据工程地质条件及安装环境采用符合国家标准的管材及配套管件，宜使用以下管材及配套管件。管径（mm）推荐管材、管件名称DN100PE100管材、管件（用混配料生产）钢衬塑复合管材、管件（不得使用涂塑）100DN200球墨铸铁管材、管件PE100管材、管件（用混配料生产）钢衬塑复合管材、管件（不得使用涂塑）2001200球墨铸铁管材、管件卷板焊接钢管、管件（内外防腐）钢套筒混凝土管（PCCP）、管件注： 球墨铸铁管管材，应采用经外层喷锌和退火工艺的球墨铸铁管管材，非特殊情况下，管件也应采用相应的球墨铸铁管件。3.2 过路管宜采用球墨铸铁管，不宜采用非金属管道。当出现穿越或架空、转换驳接等特殊情况时，需要钢管的地方应采用特强级防腐。3.3 室内生活给水管道推广使用铝塑复合管、钢衬塑复合管、PE100、PPR、不锈钢管、铜管等优质管材。3.4 生活饮用水管道不宜使用单管多孔管和UPVC管。4 阀门及附属设施的选用4.1 阀门的选用如下表：阀门直径（mm）阀门名称技术要求50DN300法兰式蝶阀配备安装伸缩节或柔性接头注：不宜采用伸缩节、蝶阀一体的伸缩蝶阀；不宜在饮用水系统中采用UPVC材料的阀门；室外安装的阀门不宜采用明杆闸阀。4.2 阀体材料不宜使用灰口铸铁。4.3 阀杆宜采用不锈钢杆或铜杆。4.4 消火栓推荐采用球墨铸铁消火栓。4.5 车行道、人行道上给水井盖宜使用球墨铸铁井盖。5 室外管道设计与施工的要求5.1 市政过路支管应在穿越道路前设置阀门，消火栓宜设置在配水支管阀门后。5.2 DN400mm的供水主干管，宜在适当位置设测流测压井。5.3 凡在DN300mm的供水主干管上接出预留接水的支管，其管径不宜小于DN200mm。5.4 钢管防腐5.4.1 钢管应选用环氧系防腐涂料防腐。管外壁用环氧煤沥青涂料或环氧玻璃鳞片涂料防腐；管内壁采用水泥砂浆或无毒饮水仓涂料。DN300及以下宜用水泥砂浆，DN400及以上宜用无毒饮水仓涂料防腐。环氧玻璃鳞片涂料质量指标和无毒饮水仓涂料质量指标参照钢管制作防腐标准（ZSB101）执行。5.4.2 钢管表面处理标准为Sa2Sa2.5级（管内壁用水泥沙浆衬涂防腐除外）。5.4.3 防腐等级按钢管安装位置选择：外露及埋地钢管均应按加强级防腐，过河、过车道钢管或采用顶管施工的管段按特强级防腐。防腐等级和涂料结构、防腐质量评定标准及钢管防除锈防腐工艺参照钢管制作防腐标准（ZSB101）执行。5.4.4 钢管焊接口应做好内外防腐。5.5 埋地管道采用非金属管道时，必须在管道上端2030cm处埋设金属示踪线。6 新旧管道的连接6.1 连接方式宜采用不停水的开口方式。6.2 需要停水的新旧管道连接施工，应采取措施，保证在24小时内恢复供水。7 室内管道及二次供水设计、施工要求7.1 一般要求 7.1.1 住宅楼宇的生活给水系统与消防给水系统应分开设置、计量。厂房、办公大楼等非住宅楼宇的生活、生产给水系统与消防给水系统应根据生活生产与消防水量的差异来确定是否分开设置、计量。7.1.2 小区引入管应设置低阻力倒流防止装置。7.2 水表7.2.1 居民生活住宅水表设置应一户（具有独立产权的建筑为一户）一表，水表应设置在便于抄表、维护的公共部位。7.2.2 水表的选型与使用应充分考虑口径与流量的匹配关系。DN50的计量水表，正常运行时最大流量不得超过该类水表的过载流量，最小平均用水流量不得低于分界流量。DN200的水表，不宜采用机械表。7.2.3 当申请或以安装的水表口径与实际用水需要的水表口径有偏差时，应更换与实际用水相匹配的水表。7.2.4 水表立柱宜采用304以上的不锈钢分水器，并加设控制阀。7.2.5 DN25及以下水表前应采用表前防盗铜（或不锈钢）闸(球)阀。7.2.6 水表的安装7.2.6.1 高层建筑水表的安装要求7.2.6.1.1 维修管道的管井，其维修人员的工作通道净宽度不宜小于0.6m，管道井应每层设外开检修门；管道井门槛高度不宜超过0.3m，门洞大小应便于检修；管道井的井壁和检修门的耐性极限及管道井的竖向防火墙应符合消防规范的规定，管道井宜设置有水封的排水地漏；7.2.6.1.2 水表安装层应设置安装检修平台；7.2.6.1.3 管廊内应设置照明设施及排水设施；7.2.6.1.4 施工图中应含有管道井（水表房）大样图。7.2.6.2 多层建筑水表的安装要求7.2.6.2.1 宜装设室外不锈钢水表箱；7.2.6.2.2 水表如设置在楼顶应设置防护设施。7.3 室内管道7.3.1 室内供水干管应安装在公共部位，穿越墙体、楼地板段必须加设套管。室外管道进户前应加设控制阀。7.3.2 室外明装管道应做防护措施以避免阳光照射。7.4 生活用水水池、水箱7.4.1 水池（箱）中蓄水停留时间不宜超过24小时，保证水的流动，避免死角，防止污染。超过24小时应采取消毒措施。7.4.2 水箱进水管与出水管分开设置，不得产生短流，水箱预埋套管应达到特强级内、外防腐标准。7.4.3 水池（箱）进水管宜采用带电磁阀的遥控浮球阀。7.4.4 当供水管道压力大于等于0.2MPa时，地下水池的进水管宜设置减压阀。7.4.5 泄水管应装设在池（箱）底部，保证能够排空，并装设防盗阀门，不得与排水系统直接连接。屋顶水箱的泄水管径，应考虑屋顶排水系统的排空能力（校核屋顶排水管管径是否满足屋顶水箱排空条件）。7.4.6 水箱出水管应设水样采样点。7.4.7 池（箱）壁应采用符合饮用水卫生标准的喷涂瓷釉涂料、无毒的饮用水油漆或贴瓷砖，检修爬梯采用不锈钢材料。水箱底部应找坡。7.4.8 水池（箱）附属设施设计：7.4.8.1 溢流管出口处应设网罩；7.4.8.2 通气管管口应有防止灰尘、昆虫进入的滤网，管口朝下；7.4.8.3 人孔应加盖，人孔盖与盖座应吻合和紧密，并用富有弹性的无毒发泡材料嵌在接缝处；人孔密封盖应采用不锈钢材料，并加设防水设施；暴露在外的人孔盖应有锁；7.4.8.4 地下水池人孔应设在安全卫生、便于管理和维护的部位，严禁设置在交通要道。7.4.9 推荐使用不锈钢水箱。7.5 二次加压系统7.5.1 生活给水加压系统，应按照供电部门要求单独设电表计量，直接由供电部门抄收电费。7.5.2 二次加压的系统应采取全自动控制，并备有手动控制模式，必须设有备用水泵。水泵应采用自灌式启动，变频加压系统应加设不锈钢调节水罐。每台水泵的出水管应设闸阀、低噪音式止回阀、伸缩器（橡胶接头）、压力表，总出水干管应设置总阀，每台水泵的吸水管上必须装设闸阀。水泵与基座间应安装减震装置，立式泵应用减震器。7.5.3 泵房应设置排水设施和防盗设施，照明和通风良好，并设置电源插座。7.5.4 水池（箱）在投入使用前，必须强制清洗消毒。7.6 叠压式、无负压加压设备选用及应用条件7.6.1 叠压式、无负压加压设备的选用严格按照管网叠压供水设备（CJ/T254-2007）城镇建设行业标准执行。 7.6.2 叠压式、无负压加压设备的使用条件7.6.2.1 主干管DN400mm，压力0.28MPa，供水量能够得到充分满足。设有高位调节水箱的建筑压力要求可适量降低。7.6.2.2 接管管径不得大于主干管的1/3 。7.6.2.3 除满足上述条件外，需征得供水部门同意后方可选择使用。7.6.3 叠压式、无负压加压设备的吸水管应设置低阻力管道倒流防止装置。8 管道试压和冲洗8.1 试压管道长度宜参照国家规范执行，应结合现场和施工情况分段进行，试压前应将所有敞口封堵。阀门不得参与管道试压。8.2 管道试压前，管道接口处不得回填，其他部位两侧及管顶以上回填高度不应小于0.5m；水压试验合格后，应及时回填其余部分。8.3 管道设计的工作压力：室外管道的工作压力应不小于0.5MPa。8.4 供水管道水压试验后、竣工验收前应委托专业部门进行冲洗消毒，并出具水质检测报告。冲洗时应避开用水高峰期，以流速不小于1.0m/s的冲洗水连续冲洗，直至出水口处浊度、色度与入水口处冲洗水浊度、色度相同为止。为了促进本公司各项经营活动由事后管理向事前管理方式的转变，强化生产经营全过程控制，提高资金使用的计划性，特制定本管理办法，以增加公司资金运行的透明度，降低各项成本，使有限的资金发挥最大的效能。treatment of heavily polluting industries. According to municipal, and municipal government deployment of seven big heavy pollution industry regulation three years action plans, requirements to December 2016 end of Qian, all included shut stopped eliminated of enterprise all shut stopped eliminated in place; June 30, 2017 Qian, all included place regulation upgrade and agglomeration restructuring of enterprise by unified standard regulation in place, late not standard of enterprise are implementation discontinued; June 30, 2018 Qian, all intends Park production of enterprise relocation Park in place, late not Park of are discontinued. In the process of renovation, will focus on four aspects: to firmly close the high energy consumption and heavy pollution, hopeless enterprise governance and production lines, eliminated a number of yearly emission intensity, low value-added products of backward production capacity. Second, we must strictly enforce the space, total project Trinity environment access system, promoting industry access and environmental conditions of access of enterprises to the Park, industrial park, in principle, no longer the class on the new project. Thirdly, promoting replacement and reconstruction of heavily polluting industries, mergers and reorganizations, guide enterprises to energy conservation, recycling and low-carbon and clean production, and improve the level of green development. Four to establish a long-term supervision mechanism, increase the intensity of special inspections, investigate and punish the rectification is not in place, normal business of running anti-pollution installations do not. (Iii) linkage to promote flood control water, drainage, water supply, improving water saving. Speed up cross Yang support river dike reinforcement, and along Pu seawall except insurance reinforcement, and Lake Qian sluice, and BA Cao sluice, and cloud cover reservoir, focus flood control drainage engineering construction, vigorously implementation strong libra