通化市污水处理厂提标扩建工程设计

发布时间：2018-05-25 04:29

本文选题：污水处理厂 + 提标扩建　；参考：《吉林大学》2017年硕士论文

【摘要】：随着城市建设的发展和人口的急剧增加,城市污水排放等环境问题日益突出,而污水处理工程作为城市重要的基础设施,对城市的发展有着先导性和制约性的作用。通化市污水处理厂始建于2009年,目前已满负荷运行。本文从对通化市中心城区排水规划、污水水质及水量综合预测的角度出发,以解决现有污水处理厂规模不足、污水处理程度不够的问题为目的,对通化市污水处理厂进行提标扩建工程设计。通化市污水处理厂提标扩建工程在原一期工程预留用地上建设,扩建规模5万m3/d,同时对一期5万m3/d规模进行提标改造,实现全厂总规模10万m3/d,出厂水质符合《城镇污水处理厂污染物排放标准》(GB18918-2002)中的一级A标准。一期提标改造工程内容包括:在维持原AAO工艺的基础上将生化反应池进水量将至4万m3/d,将一期溢流井改造为配水井,改造二沉池配水配泥井,扩大生化反应池曝气用鼓风机房面积,将一期污泥脱水机房作为一二期共用污泥浓缩机房。二期扩建工程污水处理工艺采用“旋流沉砂池+初沉池+多模式AAO+二沉池”工艺,采用“离心浓缩+板框脱水”工艺统一处理一、二期污泥,全厂总规模10万m3/d的深度处理采用“高效沉淀池+滤布滤池+紫外线消毒”工艺,尾水部分排入通天河进而排入浑江,部分回流中水回用车间。中水回用采用UF+RO+混床工艺,回用水规模3万m3/d,出水达到锅炉补给水水质要求。通化市污水处理厂提标扩建工程建成后,将大大降低城市污水对环境的污染,有效地改善城市整体环境,同时为通化市创造良好的投资环境,利于招商引资,促进城市经济的可持续发展。
[Abstract]:With the development of urban construction and the rapid increase of population, environmental problems such as urban sewage discharge become increasingly prominent. As an important infrastructure of the city, sewage treatment works play a leading and restrictive role in the development of the city. Tonghua sewage treatment plant was built in 2009, the current full load operation. In this paper, from the point of view of drainage planning, water quality and quantity forecast of Tonghua central city, the purpose of this paper is to solve the problem that the scale of existing sewage treatment plant is insufficient and the degree of sewage treatment is not enough. The expansion project design of Tonghua sewage treatment plant is carried out. Tonghua Municipal sewage treatment Plant bid raising and extension Project is built on the reserved land for the original first phase project, with an expansion scale of 50,000 m3 / d, and at the same time, the scale of the first phase of the 50, 000 m3 / d scale will be upgraded. The total scale of the plant is 100000 m3 / d, and the water quality of the factory conforms to the first class A standard of the pollutant discharge standard of the Municipal sewage treatment Plant (GB18918-2002). The first stage of the project includes: on the basis of maintaining the original AAO process, the influent of the biochemical reactor will reach 40 000 m3 / d, the first stage overflow well will be transformed into a distribution well, and the secondary sedimentation tank will be transformed into a mud well for water distribution. The area of blower room for aeration in biochemical reactor was enlarged, and the first stage sludge dehydrator room was used as the common sludge thickener room. The sewage treatment process of the second stage extension project adopts the "multi-mode AAO secondary settling tank for primary settling tank of cyclone sand settling tank" and the "centrifugal thickening plate and frame dewatering" process for the unified treatment of sludge in one or two phases. The total scale of 100000 m3 / d advanced treatment adopted the technology of "ultraviolet disinfection of filter cloth filter tank with high efficiency". The tail water was discharged into Tongtian River and then into Hunjiang River, and part of the reflux and reclaimed water was reused in the workshop. UF RO mixed-bed process is used for reclaimed water reuse. The scale of reused water is 30 000 m3 / d, and the effluent meets the requirement of boiler recharge water quality. After the completion of the project to raise and expand the standard of Tonghua sewage treatment Plant, it will greatly reduce the pollution of urban sewage to the environment, effectively improve the overall environment of the city, and at the same time create a good investment environment for Tonghua City, which is conducive to attracting investment, Promote the sustainable development of urban economy.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X703

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