环境工程毕业设计酒精废糟液的排放【参考】.doc

摘 要 当前酒精废糟液的排放成为制约酒精发酵工业的重要因素，糟液的综合治理是解决环境污染一个重要方面，本文即是针对玉米酒精厂的废水处理进行工艺设计，污水先经预处理系统（包括事故调节池、集水池、PH调节）处理后进入MIC反应器处理，经处理后出水CODcr去除率达85%，BOD去除率达85%。然后进入生物滤池处理最终进入氧化沟处理COD去除率达99.33%，BOD去除率达99.72%。本设计完成了工艺选择、设计，主体构筑物的计算及工程的概预算。 【关键词】酒精 ,MIC ,BOD ，COD Abstract Distillery waste always is one of the chief factors to restrict the development of alcoholic fermentation industry .The comprehensive treatment of it can decrease environmental pollution. This paper tries to design a process to treat wastewater about a alcohol corn plant. The sewage first treated by pretreatment system(including accidents regulation pits ,collecting tank,ph adjustment ),then treated by MIC anaerobic reactor ,the removal rate of CODcr of water after treatment was 85% and removal rate of BOD reached 85%,then the water flew into filter bed and finally flew into OD ,the removal rate of CODCr and BOD of water after treatment reached 99.33%and99.72% respectively. In this paper author complete process selecting and design, accounting important buildings and estimate the price of the sewage treatment plant. 【Key words】 alcohol ,MIC anaerobic reactor , BOD, COD  目 录 1总论 - 2 - 1.1工程概况 - 2 - 1.2编制目的、依据、原则 - 2 - 1.2.1编制目的 - 2 - 1.2.2编制依据 - 2 - 1.2.3编制原则 - 2 - 1.3废水水量及水质 - 3 - 1.4排放标准 - 3 - 2废水处理工艺流程的比较与选择 - 4 - 2.1废水处理基本方法的确定 - 4 - 2.2 厌氧生物处理技术的比较与选择 - 4 - 2.3好氧生物处理技术比较与选择 - 6 - 3方案设计 - 9 - 3.1设计原则 - 9 - 3.2工艺流程的确定 - 9 - 3.2.1工艺流程特点 - 9 - 3.2.2工艺流程说明 - 9 - 3.3主体构筑物及设备的设计 - 10 - 3.3.1调节池 - 10 - 3.3.2一级MIC厌氧反应器 - 11 - 3.3.3中沉池1 - 16 - 3.3.4二级MIC厌氧反应器 - 17 - 3.3.5中沉池2 - 18 - 3.3.6生物滤池 - 20 - 3.3.7中沉池3 - 22 - 3.3.8配水井 - 23 - 3.3.9氧化沟 - 24 - 3.3.10配水井 - 25 - 3.3.11二沉池 - 26 - 3.3.12污泥浓缩池 - 28 - 3.3.13 厌氧污泥储池 - 28 - 3.3.14污泥脱水机房 - 29 - 4污水处理厂高程设计计算 - 30 - 4.1污水处理部分高程 - 30 - 4.2污泥处理部分高程 - 31 - 4.3各单元的进出水浓度和去除率情况 - 31 - 5工程概预算 - 32 - 5.1工程投资 - 32 - 5.1.1第一部分费用 - 32 - 5.1.2第二部分费用 - 35 - 5.1.3工程总投资合计 - 35 - 5.2 效益分析 - 35 - 5.2.1运行费用 - 35 - 5.2.2效益产出 - 35 - 致谢 - 36 - 参考文献