北京理工大学珠海学院2007届本科生毕业设计
啤酒厂污水处理工艺流程设计
摘 要
啤酒工业在我国迅猛发展的同时，排出了大量的啤酒污水，给环境造成了极大的威胁。啤酒污水处理厂的处理水量为5000m3/d,不考虑远期发展。原污水中各项指标为：BOD浓度为800mg/L ,COD浓度为1400mg/L ，SS浓度为350mg/L, Ph=6～10 。因该污水BOD值较大,不经处理会对环境造成巨大污染，故要求处理后的排放水要严格达到国家二级排放标准,即：BOD ≤20mg/L ，COD ≤100 mg/L ，SS ≤70mg/L ，Ph=6～9。
本文分析了啤酒生产中污水产生的环节，污染物及主要污染来源，并从好氧、厌氧生物处理两方面来考虑了污水治理工艺，提出了UASB+CASS的组合工艺流程。可将污水COD由1400 mg/L降至50～100 mg/L ，BOD从800mg/L降至20 mg/L以下，SS由350 mg/L降到70 mg/L以下，出水符合标准。
本设计工艺流程为：
啤酒污水 → 格栅 → 污水提升泵房 → 水力筛 → 调节池 → UASB反应器 → CASS池 → 处理水
该处理工艺具有结构紧凑简洁，运行控制灵活，抗冲击负荷，污泥量小等特点。为啤酒工业污水处理提供了一条可行途径。具有良好的经济效益、环境效益和社会效益。
关键词：啤酒污水 UASB CASS
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北京理工大学珠海学院2007届本科生毕业设计
Sewage Treatment Process Design of Beer Factory
Abstract
With the rapid development of brewery industry in China, more brewery wastewater is discharged, which endangers enviroment.
The water which needs to treatment in the beer waste water treatment plant is 5000m3/d, regardless of the specified future development. Various target in the raw waste water is: the concentration of BOD is 800 mg/L , the concentration of COD is 1400 mg/L , the concentration of SS is 350 mg/L，and pH is 6～10 . For the beer waste water's BOD is high, it could pollute the environment if drained before treatment, so it request the beer waste water which drained must be strictly treated to the two effluence standard in the country, which is as following: BOD ≤ 20 mg/L , COD ≤ 100 mg/L , SS ≤ 70 mg/L ,pH = 6～9 .
According to the product scale of beer brewery, the main standard of draining water\\natural materials, and so on, the main process technology of the beer waste water disposal station is defined as UASB + CASS .Practice of project indicate, when COD of wastewater reduces from 1400mg/l to 50~100mg/l, BOD reduces from 800mg/l to 20mg/l, SS reduces from 350mg/l to 70mg/l, so that drains out can reaches the Standard.
The technological process of this design is:
Beer waste water → Screens → The sewage lift pump house → shuili shai → Regulates tank → Reaction tank of UASB → Tank of CASS → Treatment water
This technology of wastewater treatment has many traits. Such as, well-knit structure, pithy quick control, lasting attacked, less sledge capacity. Practice indicates that the composed craft has reliable function, its investment is little, and its running and management is uncomplicated.
Key words: beer waste water UASB CASS
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北京理工大学珠海学院2007届本科生毕业设计
目 录
摘要 ............................................................................Ⅰ ABSTRACT .......................................................................Ⅱ 1前言 .......................................................................................................................................................1
1.1研究的意义及目的 ...................................................................................................................1 1.2研究目标和关键问题 ..............................................................................................................1 1.3研究现状和内容 ........................................................................................................................1
2工艺流程选择及说明 ...............................................................................................................2
2.1工程概况 ........................................................................................................................................2 2.1.1工厂概况 ...................................................................................................................................2 2.1.2设计依据..…………………………………...……………………………………..2 2.1.3设计范围 ................................................................................................................... 2 2.1.4设计原则 ...................................................................................................................................2 2.2污水处理工艺流程 ...................................................................................................................2 2.2.1建设规模 ...................................................................................................................................2 2.2.2设计原水水质指标 ..............................................................................................................3 2.2.3设计出水水质指标 ..............................................................................................................3 2.2.4处理工艺流程的选择 ........................................................................................................3 2.2.5处理工艺路线的确定 ........................................................................................................3 2.3主要处理构筑物设计及选型 ..............................................................................................4 2.4污水处理站总体布置 ..............................................................................................................5
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北京理工大学珠海学院2007届本科生毕业设计
2.4.1布置原则 ...................................................................................................................................5 2.4.2管线设计 ...................................................................................................................................5 2.4.3布置特点 ...................................................................................................................................6 2.4.4高程布置 ...................................................................................................................................6
3工艺流程计算……………………………………………………….………..…………………8
3.1啤酒污水处理构筑物设计与计算 ......................................................................... 8 3.1.1格栅 ..............................................................................................................................................8 3.1.2集水池 ...................................................................................................................................... 11 3.1.3泵房 ............................................................................................................................................ 11 3.1.4水力筛 ......................................................................................................................................12 3.1.5 酸化调节池 ..........................................................................................................................13 3.1.6 UASB反应池 .........................................................................................................................15 3.1.7 CASS反应池 .........................................................................................................................24 3.2污泥部分各处理构筑物设计与计算 ............................................................................33 3.2.1集泥井 ......................................................................................................................................33 3.2.2污泥浓缩池 ............................................................................................................................34 3.2.3 污泥脱水间 ..........................................................................................................................36 3.3构筑物高程计算 ......................................................................................................................38 3.3.1污水构筑物高程计算 ......................................................................................................38 3.3.2污泥高程计算 ......................................................................................................................40 参考文献................................................................................................................................................42 谢辞 ..........................................................................................................................................................43
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