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1、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
2、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)
3、 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, t
4、he 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 E
5、limination 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
6、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. Do
7、mestic 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 dom
8、estic 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
9、, 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
10、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 intens
11、ity of毕业设计(论文)开题报告题目：双牌县污水处理厂扩大初步设计 课 题 类 别： 设计 论文学 生 姓 名：李佳 学 号：2009班 级：给排0902专业（全称）：给水排水工程指 导 教 师：谢敏2013年3月一、本课题设计目的、意义：1. 进一步熟练掌握专业基础知识，培养独立思考问题和解决问题的能力,；2. 通过毕业设计，熟悉掌握取水工程、净水工程的设计原理、方法及步骤；3. 根据原始设计资料，正确选定设计方案，对取水工程、输水管道、净水工程进行设计，并进行正确计算；4. 掌握设计说明书、计算书的编写内容和编制方法； 5. 熟练操作计算机软件绘图及手工绘图，具备绘制工程图纸的能力。二
12、、设计资料：1、 设计人口：10万人2、 排水量标准：180210L/人日3、 工业污水排放量：800m3/d，K时=1.24、 污水水质： CODcr=250mg/l；BOD5=200mg/l；SS=250mg/l；大肠杆菌数超标5、 污水水温21，pH=7.56、 出水水质要求：符合城镇污水处理厂污染物排放国家三级标准 BOD530mg/l；SS30mg/l；CODcr120mg/l；LAS2mg/l；大肠杆菌数104个/l；25mg/l；总磷3mg/l；动植物油5mg/l；石油类5mg/l；pH=69；色度30(稀释倍数)。7、 污水厂地势基本平坦，自南向北逐渐升高，地面标高在60.34
13、米(地面高程60.34米)，地面坡度为9%。8、 场地与其它(1) 场地坐标 X 0.00 350.00 0.00 350.00 Y 0.00 0.00 180.00 180.00 (Y正指向北)(2) 来水方位：X：350.00，Y50.00 管内底标高：57.21米 管径D=1000mm，充满度h/D=0.6(3) 地下水位：54.21米(4) 接纳水体：位于场区西边，最高水位：56.08米9、 气象资料(1) 年平均气温：23(2) 夏季主导风：东南风，台风最高达910级，10米以上构筑物应考虑台风影响。(3) 历年平均降水量为：1472.9mm。(4) 历年平均相对湿度为：81%。 1
14、0、城市地质资料：厂区土层情况良好，地下2米深以内为粘土层，26.5米为砂粘土，6.588米为砾石层。厂区为地震6级区。TP=5 mg/ L（1）设计出水水质清远市位于珠江流域重点防护区以后，为有效防治水体富营养化和水产养殖业的发展，要求处理工艺必须有脱氮除磷效果。处理厂出水主要污染物执行GB8978-1996中的一级标准。因此，确定本工程设计出水水质标准为：BOD520 mg/ L CODCr60 mg/ L SS20 mg/ L NH3-N15 mg/ L TP1.5 mg/ L三、课题任务要求：1、 根据设计资料、当地情况、污水性质与成分，结合课题要求选择合适的污水、污泥处理工艺，此部分
15、要有方案论证；2、 在确定污水、污泥的处理工艺流程时，同时选择适宜的各单体构筑物的类型。对所有处理构筑物都进行设计计算，包括确定各有关设计参数、构筑物主要尺寸与所需的材料和规格等；3、 污水泵站工艺设计要确定水泵机组的台数、水泵型号、泵站的结构形式以及集水池的容积，并应进行泵站水泵机组管道水力计算和电器设备等布置设计，泵站的建筑与结构设计可参照标准图大致来确定；4、 污水处理厂平面布置要紧凑合理，节省占地面积，同时应保证运行管理方便；5、 对污水与污泥处理系统要做出准确的水力计算和高程计算；6、 设计图纸绘制规范，其中至少有两张基本达到施工图深度，对需绘制施工图的构筑物要进行更为详细设计计算，包括各部位构件的形式、构成与具体尺寸等。四、 国内外研究现状及发展趋势（含文献综述）： 目前，国内外城市污水处理厂厂采用的工艺有普通活性污泥法、A/O生物脱氮活性污泥法、A/A/O生物脱氮除磷工艺、AB工艺、氧化沟法（循环混合式活性污泥法）、SBR间歇时活性污泥法等工艺。1 关于活性污泥法 当前流行的污水处理工艺有：AB法、SBR法、氧化沟法、普通曝气法、A/A/O法、
