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某大学 毕业设计（论文） （2013届） 题 目 某淀粉厂废水处理工艺设计 学 生 学 院 专 业 班 级 校内指导教师 专业技术职务 讲师 校外指导老师 专业技术职务

二○一三年六月

某淀粉厂废水处理工艺设计

摘要：本次设计主要是淀粉废水处理设计。淀粉废水的主要特点就是废水中含有大量的有机物，属高浓度有机废水，所以废水生化需氧量也较大。某淀粉厂产生废水10000 m3/d，CODCr为8000～10000mg/L，BOD5为5000～7000mg/L，SS在3000mg/L左右，pH值为5，经处理后的废水排放标准执行《污水综合排放标准》规定的二级水质标准。淀粉厂产生的淀粉废水处理工艺的要求为采用UASB＋SBR法处理。

此设计流程简单、构筑物较少，处理效果较好，并且成本低、占地面积小，适合于大中型淀粉厂废水的处理。 关键词：淀粉废水；UASB；SBR。

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A starch factory wastewater treatment process design

Abstract：This design is mainly starch wastewater treatment design. Starch is the main characteristic of wastewater effluent contains a lot of organic matter, a high concentration organic wastewater, wastewater BOD so well. A starch factory of

wastewater is 10000 m3 / d, CODCr of 8000 ~ 10000mg / L, BOD5 of 5000 ~ 7000mg / L, SS at 3000mg / L or so, pH value of 5, pH value of 5, the treated wastewater

discharge standards \water quality standards. Starch produced from starch factory wastewater treatment process requirements for the use of UASB + SBR method.

This design process is simple, small structures, better handling, and low cost, small footprint, suitable for medium and large starch factory wastewater. Keyword：Starch wastewater; UASB; SBR.

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目 录

1.绪论............................................................................................................................. 1 1.1课题研究的意义，国内外研究现状和发展趋势 .............................................. 1 1.1.1意义................................................................................................................ 1 1.1.2 国内外研究现状和发展趋势....................................................................... 1 1.2研究的主要内容 .................................................................................................. 1 1.3课题的研究目标、内容和拟解决的关键问题 .................................................. 2 2.淀粉废水处理工艺设计............................................................................................. 2 2.1废水处理工艺选择原则 ...................................................................................... 2 2.2废水水质分析 ...................................................................................................... 3 2.2.1淀粉废水进出水水质水量............................................................................ 3 2.2.2淀粉废水的特点及来源................................................................................ 3 2.3设计涉及范围及原则 .......................................................................................... 3 2.4工艺流程的比较 .................................................................................................. 4 2.5工艺方案的确定 .................................................................................................. 6 2.6处理工艺 UASB反应器+SBR ........................................................................... 7 2.7方案特点 .............................................................................................................. 8 3.构筑物计算................................................................................................................. 8 3.1粗格栅 .................................................................................................................. 8 3.2集水井 ................................................................................................................ 10 3.3提升泵房 ............................................................................................................ 11 3.4细格栅 ................................................................................................................ 11 3.5曝气沉砂池 ........................................................................................................ 13 3.6气浮池 ................................................................................................................ 15 3.7 水解酸化池设计 ............................................................................................... 18 3.8 UASB反应器..................................................................................................... 21 3.9 SBR反应器 ........................................................................................................ 26 3.10 集泥井的计算 ................................................................................................. 29 3.11 污泥重力浓缩池 .............................................................................................. 30 3.12污泥脱水间 ...................................................................................................... 32 3.12整个设计的超越管 .......................................................................................... 32 4.平面布置................................................................................................................... 32 4.1 平面布置的一般原则和要求 ........................................................................... 32 4.2具体平面布置 .................................................................................................... 33 4.3 污水处理厂高程布置 ...................................................................................... 34 4.4 高程确定 ........................................................................................................... 35 5.投资估算................................................................................................................... 35 6.劳动定额与运行费用计算....................................................................................... 36 6.1劳动定额 ............................................................................................................ 36

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6.2运行费用的计算 ................................................................................................ 36 6.2.1运行费用分析.............................................................................................. 36 6.2.2运行费用计算 ................................................................................................. 36 7.结论........................................................................................................................... 37 参考文献...................................................................................................................... 38 致谢.............................................................................................................................. 39

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