计算书2
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1 摘要
众所周知，城市污水是水污染大户。据不完全统计，2005年全国城市废水年排放总量已超过500亿m3。由此可见，为了控制污染，保护环境，迫切需要解决城市污水同环境保护协调发展的问题。
根据城市污水产生的特点和污水的性质，将废水处理同废水回用结合起来作为一个完整的系统加以考虑，似更为合理，使废水处理更能适应环境保护和生产发展的要求。
本设计针对城市生活污水水质特征，同时要求脱磷除氮。对SBR、氧化沟和A2/O工艺进行比选，选择SBR作为主体工艺。污水通过格栅→调节池→SBR池工艺处理后，达到《城市污水再生利用杂用水水质标准》（GB-T18920-2002）、《城市污水再生利用 景观环境用水水质》（GB-T 18921-2002）和《污水综合排放标准》（GB8978-1996）一级标准的一级排放标准。
关键词：城市生活污水；设计；SBR法处理；脱氮除磷
2 Abstract
As everyone knows, city sewage water polluters.According to incomplete
statistics, in 2005 the national city wastewater discharge gross already
exceeded 50000000000 m3.Therefore, in order to control pollution, protect
environment, urgent need to solve the city sewage and the coordinated
development of environmental protection problem.
According to the city sewage and wastewater characteristics of
characters, will waste water treatment and wastewater reuse as a combination
of a complete system into consideration, a more reasonable, so that the
wastewater treatment can adapt to the environment protection and the
requirements of production and development.
The design for the city sewage water quality characteristics, at the same
time dephosphorization nitrogen discharge.On SBR, oxidation ditch
technology and A2/O is selected, select SBR as the main process.Sewage
through the grille, regulating pond → SBR pool process, achieve "sewage
treatment plant pollutant discharge standard" one grade discharge standard.
Key words: city life sewage；design；SBR process；nitrogen and phosphorus
remova
3 目录
第一章 引言.....................................................5
1.1本课题研究背景................................................5
1.2 生活污水概念.................................................5
1.3生活污水的回收的意义.........................................6
1.3.1 开辟城市第二水源，缓解淡水资源的严峻形势..................6
1.3.2 减轻对水环境的污染，保护水资源不受破坏.....................6
1.4 中水回用国内外现状..........................................6
1.4.1国内研究情况...............................................6
1.4.2 国外研究状况..............................................8
1.5城市生活污水的来源与组成..................................10
1.5.1生活污水....................................................10
1.5.2工业废水....................................................10
1.5.3城市污水....................................................10
2毕业设计（论文）的主要内容......................................12
2.1设计目的......................................................12
2.2设计原始资料..................................................12
2.2.1地理位置....................................................12
2.2.2建设情况....................................................12
2.2.3气象资料....................................................12
2.2.4建设选址....................................................12
2.2.5水文........................................................13
第三章 工程设计说明..............................................13
3.1设计排水量计算................................................14
3.2 污水处理系统的选择..........................................16
第四章 水处理方案的确定..........................................17
4.1污水处理厂位置的确定.........................................17
4.2小区污水处理工艺比较以及工艺流程确定.........................17
4.2.1氧化沟工艺.................................................17
4.2.2 AB工艺....................................................17
4.2.3 普通生物滤池...............................................18
4.2.4 SBR工艺...................................................18
第五章 水处理构筑物的平面布置....................................22
第六章水处理构筑物的计算........................................23
6.1格栅........................................................23
6.1.1格栅的设计与参数..........................................23
6.1.2 格栅计算..................................................23
6.2沉砂池 .....................................................25
6.2.1设计要求...................................................26
6.2.2 设计计算...................................................26
6.3污水提升泵站.................................................28
6.3.1一般规定...................................................28
6.3.2选泵.......................................................28
4 6.4 SBR处理工艺计算.............................................29
6.4.1沉淀时间（TS）..............................................30
6.4.2曝气时间（TA）..............................................31
6.4.3排水时间（TD）..............................................31
6.4.4周期数（n）................................................31
6.4.5进水时间（TF）.............................................31
6.4.6反应器容积（V）............................................31
6.4.7需氧量（AOR）.............................................32
6.4.8供氧量（SOR）.............................................32
6.4.9滗水器....................................................33
