生物接触氧化设计计算详解(共97页).doc
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1、精选优质文档-倾情为你奉上摘 要水污染问题是我国最大的环境问题之一,水处理的发展对我国能否实现可持续发展起着举足轻重的作用。尤其是水资源的过度开发和不合理利用,导致水污染日益严重。因此,高效、合理、经济的污水处理工艺是解决这些问题的关键。本设计是山东济南某新区20000m3/d生活污水处理厂的初步设计。根据城市所处的地理位置和污水厂的规模,并结合脱氮除磷的要求,城市污水处理厂设计采用生物接触氧化工艺。生物接触氧化是采用生物膜水处理废水的一种方法,是以附着在载体(填料)上的生物膜,净化有机废水的一种高效水处理工艺。所选的生物接触氧化工艺具有工艺稳定性高,处理构筑物少,流程简化,节省投资等优点。通
2、过此工艺的处理,出水水质将达到国家城镇污水处理厂污染物排放标准(GB18918-2002)中的一级B标准。关键词:生物接触氧化 污水处理厂 工艺流程Abstract One of the foremost Environmental problems in our country is water pollution, especially because of over-exploitation of water resources and unreasonable use,water pollution is increasely serious.So,efficient,rational
3、,economic process of wastewater treatment plant is the key to solve these problems.The design is a intial design on sewage treatment plants of a new township Ji Nan of Shan dong province.According to the location of the township ,the sacle of the plant and the requirements of nitrogen and phosphorus
4、 removal,the craft of the plant is bio-contact oxidation. Bio-contact oxidation is a kind of wastewater treatment method by using biofilm, which is a highly efficient wastewater treatment process of organic materials purification with the biomembrane attached to the carrier (commonly known as filler
5、s). Selected bio-contact oxidation process has some advantages, such as high process stability , less structure, process simplification and saving investment.Through this craft processing, the effluent will reach the B standard of national urban sewage treatment plant emission standards (GB18918-200
6、2).Keywords: bio-contact oxidation Sewage treatment plant Process目 录 ContentsAbstractIIChapter 1 Design summarize11.1 Design basis and design task11.1.1 The original basis11.1.2 The basic requirements of the design21.1.3 Design Principles21.1.4 Design basis21.1.5 Design Purpose31.2 Design of water31
7、.3 Design of water Design of water3Chapter 2 Determination Process52.1 Design and feasibility analysis52.1.1 CASS Technology62.1.2 Biological contact oxidation process82.1.3 Choosing the craft82.2 Engineering examples102.2.1Ngineering examples of cass craft102.2.2 Engineering examples of Biological
8、contact oxidation process112.3 Process of the craft12Chapter 3 Wastewater treatment design and calculation of structures133.1 Coarse grid133.1.1 Design Notes133.1.2 Design parameters143.1.3 Design calculations143.2 Grit chamber173.2.1 Design Notes173.2.2 Design parameters173.2.3 Design calculations1
9、73.3 Fine grid183.3.1 Design parameters183.3.2 Design calculations193.4 Grit chanber213.4.1 Design Notes213.4.2 Design parameters223.5 Hydrolysis acidification tank263.5.1 Design parameters263.5.2 Volume calculations263.5.2 Water distribution system273.6 distribution wells293.6.1 Design Notes293.6.2
10、 Design repuirements293.6.3 Design calculations303.7 Bio-contact oxidation tank323.8 Sedimentation tank423.6.1 Known conditions423.8.2 Design parameters423.8.3 Design calculations433.9 Disinfectant tank483.9.1 Design parameters483.9.2 Design calculations483.10 Chlorination room493.10.1 Disinfectant4
11、93.10.2 Chlorine dosage calculation493.11 sedimentation tank503.11.1 Design parameters503.11.2 Design calculations513.12 Blower housing543.13 Sludge storage tank543.13.1 Design parameters543.13.2 Design calculations543.14 Sludge pumping station553.15 Sludge dewatering machine room563.15.1 Calculatio
12、n of the amount of dewatered sludge563.15.2 Dehydrator Selection573.15.3 Pump Selection sludge transportation583.15.4 Calculation of dosage583.16 Regulation ponds593.16.1 Volume calculation59Chapter 4 Description of major equipment60Chapter 5 Sewage treatment plant layout635.1 Layout of the sewage t
13、reatment plant635.1.1 The principle of The layout635.1.2 Layout635.2 Elevation layout of the sewage treatment plant655.2.1 Elevation layout principle655.2.2 Sewage treatment elevation calculation665.2.3 Sludge treatment elevation calculation73chapter 6 the project budget and cost analysis776.1 Busin
14、ess organization776.1.1 Situation of the enterprise776.1.2 Labor quota776.2 Investment budget776.2.1 Investment budget786.2.2 Apparatus and instruments purchased fee816.3 Other construction costs816.4 Ready-costs816.5 Operating costs816.5.1 Energy consumption charges E1826.5.2 Pharmacy fee E2826.5.3
15、 Wage welfare E3836.5.4 Basic fixed asset depreciation charges E4836.5.5 Intangible assets and deferred assets amortization expense E5836.5.6 Overhaul fund commission E6846.5.7 Routine repair and maintenance fee E 7846.5.8 Management fee sales and other expenses E 8846.5.9 Annual operating costs E98
16、56.5.10 Total annual costs E10856.5.11 Unit cost of processing E11856.5.12 Unit operating costE1285chapter 7 Environmental Impact Assessment867.1 Environmental quality standards and pollutant discharge standards867.1.1 Environmental quality standards867.1.2 Pollutant emission standards867.2 Project
17、construction and production impact on the environment877.2.1 Air Pollution Sources877.2.2 Wastewater pollution877.2.3 Solid waste materials877.2.4 Noise877.3 Environmental protection measures the initial program887.3.1 Atmospheric environmental governance887.3.2 Wastewater treatment887.3.3 Solid was
18、te management887.3.4 Noise control887.4 Safety measures89 7.5 Evaluation findings89Conclusion90Acknowledgements91References92专心-专注-专业第1章 设计概论1.1设计依据和设计任务 1.1.1 原始依据1设计题目 山东济南某新区生活污水处理厂初步设计2.给定资料(1)污水水质:设计原水水质为COD= ,BOD5=,SS=,NH3-N=,TN=, TP=,PH=6.58.0(2)出水水质要求:要求出水水质达到国家城镇污水处理厂污染物排放标准(GB18918-2002)中的
19、一级B标准要求。排入自然沟壑,夏季用于灌溉,要求设计工艺技术可行、运行灵活,经济合理:出水水质:COD= ,BOD5=,SS=,NH3-N=,TN=, TP=,PH=6.5-8.0去除率:COD84.21% BOD93.75% SS90.00% NH3-N77.14% TP80.00%(3)流量变化系数:Kz=1.3(4)气象资料山东市属温带大陆性季风气候主要风向春季多为东北风,冬季多为东南风,海拔高度51.6m年平均气温 14.2最高气温 42.5最低气温 -19最大冻深 44cm主导风向 夏季为东北风,冬季为东南风最大积雪深度 19 cm年平均降水量 685mm年平均风速 2m/s1.1.
20、2 设计的基本要求1.说明书要求内容系统完整、计算准确、文理通顺书写工整、装订整齐,数字不得少于2万字,2.毕业设计图纸要求布置合理、正确清晰,符合制图标准、专业规范。图纸不少于8张(1号图纸)要求至少两张CAD图,一张手工图;3.参与本专业内容紧密相关地文献15篇,其中至少2篇外文。1.1.3 设计原则1认真贯彻国家关于环境保护工作的方针和政策,符合国家的有关法律、规范、标准。2采用适合本地区条件的技术,选用高效节能的废水处理工艺,并充分利用废水厂厂址地形,因地制宜地采用现代化技术,提高管理水平,做到投资省、运行费低、技术可靠、运行稳定。3妥善处理、处置废水处理过程中产生的栅渣、污泥,避免二
21、次污染。4选择国内或国外先进、可靠、高效,运行管理方便,维修简便的排水专用设备和控制系统。5适当考虑周围地区的发展状况,在设计上留有余地。6合理利用水资源,考虑废水回用,充分发挥项目的社会、经济和环境效益。1.1.4 设计依据1污水综合排放标准(GB8978-2002); 2室外给水设计规范(GB50013-2006);3CAD工程制图规则(GB/T18229-2000)。1.1.5 设计目的目前,我国城市污水处理率较低。据统计1998年和1999年46个重点城市污水处理率分别为20.3%和26.7%,其他城市污水处理率更低。根据中国环境保护远景目标纲要的要求,到2010年全国的污水平均处理率
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