毕业设计——某20万吨／年啤酒废水处理厂设计计算说明书.docVIP

毕业设计说明书 摘 要 通过分析啤酒生产中废水产生的环节，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废水治理工艺，本啤酒废水处理站工艺技术确定为UASB+CASS的组合工艺流程。 本设计工艺流程为： 啤酒废水 格栅 提升泵 调节池 UASB池 CASS池 处理水 该工艺可将废水COD由2500 mg/L降至80 mg/L以下 ，BOD由1500mg/L降至20 mg/L以下，SS由300 mg/L降到70 mg/L以下，出水达到啤酒工业污染物排放标准。UASB所产生的沼气可作为燃烧器燃料，提供蒸汽使用。 本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，实践表明该组合工艺处理性能可靠，投资少，运行管理简单的特点。为啤酒工业废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 啤酒废水；UASB；CASS Graduation Project Manual Abstract This paper analyzes the generation processes of wastewater, the major contaminats and their major sources in beer production. It also introduces the primary biological processing techniques of aerobic and anaerobic treatment. 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. The technological process of this design is: Beer waste water Screens The sewage lift pump house Regulates tank Reaction tank of UASB Tank of CASS Treatment water Practice of project indicate, when COD of wastewater reduces from 2500mg/l to 80mg/l, BOD reduces from 1500mg/l to 20mg/l, SS reduces from 300mg/l to 70mg/l, so that drains out can reaches the Standard. Marsh gas produced by UASB can be used to be fuel of Burner so used to provide steam. 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. Keywords beer waste water；UASB；CASS 目 录 1 绪论………………………………………………………………………… 1 2 设计条件…………………………………………………………………… 1 2.1 设计依据……………………………………………………………………1 2.2 设计资料……………………………………………………………… 2 3 设计工艺的选定……………………………………………………………… 2 3.1 目前国内啤酒废水处理工程概况………………………………………… 2 3.2 各工艺的分析对比………………………………………………………… 5 3.3 选取UASB+CASS工艺的依据………………………………………… 10 3.4 UASB+CASS