安庆某2500吨/天某肉类加工厂屠宰污水处理工程设计(含CAD图)(任务书,开题报告,论文说明书9000字,CAD图11张)
摘要
本毕业设计是一个2500吨/天的屠宰污水处理厂的设计，查阅有关文献及资料，尤其是与屠宰污水处理相关的资料 ，初步定下工艺为预处理+AAO+MBR+消毒。
考虑到屠宰废水的特点，即含有大量血污、猪毛、油脂油块、肉屑、内脏杂物、未消化的饲料和粪便等污染物、外观呈暗红色，有腥臭味，废水COD、 BOD、SS和氨氮浓度高、水质水量波动大。因此预处理工艺定为三级格栅过滤，即粗格栅、细格栅以及超细膜格栅。主体工艺为A方O工艺，经过曝气池之后的混合液就进入MBR膜池，之后再进行消毒处理后即可排放，出水水质能达到国家污水综合排放标准一级。MBR是一种深度处理工艺，泥水分离的效果非常好，前两周毕业实习参观城东污水处理厂的时候我们重点参观学习了MBR的运行状况，但是MBR膜过滤的系统是十分复杂的，膜的清洗（包括酸洗、碱洗）也很是繁琐。学生深知自己水平不够，设计经验不足，因此在设计中可能会存在一些缺陷，望老师能够批评指正。
关键词：屠宰污水；预处理；AAO工艺；MBR膜生物反应器
ABSTRACT
This graduation project is the design of a 2500 ton / day slaughtering sewage treatment plant. The relevant literature and data, especially the data related to slaughtering sewage treatment, are consulted, and the preliminary process is pre-treatment AAO MBR disinfection.
Considering the characteristics of slaughterhouse wastewater, that is, it contains a large amount of blood pollution, pig hair, oil nuggets, meat crumbs, visceral sundries, undigested feed and faeces, etc., the appearance is dark red, smelly, and the wastewater has high concentrations of COD, BOD,SS and ammonia nitrogen, The quality and quantity of water fluctuate greatly. Therefore, the pretreatment process is determined as three-stage grille filtration, that is, coarse grille, fine grille and ultra-fine film grille. The main process is A Party O process. The mixture after aeration tank enters the MBR membrane tank, and then it can be discharged after disinfection treatment. MBR is a kind of advanced treatment process. MBR is a kind of advanced treatment process. The effect of mud and water separation is very good. When we graduated to visit Chengdong sewage treatment Plant two weeks ago, we focused on visiting and learning the operation of MBR, but the MBR membrane filtration system was very complex, and the membrane cleaning (including pickling) Alkali washing) is also very tedious. Students know that their own level is not enough, design experience is not enough, so there may be some defects in the design, I hope the teacher can criticize and correct.
Keywords: slaughtering sewage; pretreatment; AAO process; MBR membrane bioreactor
1.1 基本资料
安庆某肉类加工厂集生猪屠宰、冷冻、肉类加工于一体，日宰生猪能力近7000头。该厂排出的废水中主要含有大量血污、猪毛、油脂油块、肉屑、内脏杂物、未消化的饲料和粪便等污染物、外观呈暗红色，有腥臭味，废水COD、 BOD、SS和氨氮浓度高、水质水量波动大[1]。
该厂废水主要由待宰生猪猪圈的冲洗废水、屠宰车间屠宰废水、肉类加工车间生产废水、运猪车清洗站洗车废水和厂区生活污水等五部分组成。该厂诽出的综合废水的水质见表。目前排水量约为2200水量立方米/天，甲方要求新建污水厂处
理规模按2500立方米/天设计[2]。
排放出水要求达到GB 8978-2002 污水综合排放标准一级。
1.2原水水量及水质分析
1.2.1 原水水量计算
污水量Qd = 2500t/d = 2500m3/d = 104.167m3/h = 0.0289m3/s = 28.9L/s;
由于屠宰污水属工业污水，取变化系数KZ=3.5；
则最大时流量Qmax = KZ×Qd = 3.5×28.9 = 101.15L/s = 0.1m3/s.
目录
摘要 1
第一章 基本资料 3
1.1 基本资料 3
1.2原水水量及水质分析 3
1.2.1 原水水量计算 3
1.2.2 水质分析及处理程度 3
第二章水处理方案比选 4
2.1 预处理工艺 4
2.2 生物处理工艺比较 4
2.2.1 SBR工艺 4
2.2.2 氧化沟 4
2.2.3 A2/O工艺 5
2.3 处理工艺确定 5
第三章 污水处理构筑物的计算 7
3.1 粗格栅 7
3.1.1 设计说明 7
3.1.2设计要求 7
3.1.3 设计计算 8
3.2 调节池 9
3.3 提升泵房 9
3.4 细格栅与超细格栅 10
3.5 配水井 10
3.6 初沉池 11
3.7 生化池 12
3.7.1进出水水质 13
3.7.2 生化池设计 13
3.7.3 曝气系统设计 15
3.7.4搅拌设备 18
3.7.5 回流设备 19
3.8 膜生物反应器（MBR） 19
3.9 消毒池 20
第四章 污泥处理构筑物设计 22
4.1 污泥处理工艺的选择 22
4.2 污泥浓缩和脱水 22
第五章 污水处理厂平面与高程布置 25
5.1 平面布置 25
5.2 高程布置 26
第六章 结语 28
参考文献 29
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