学号：
毕业设计说明书
20万吨/天城市污水处理工程设计（AAO工艺）
Engineering design of 1?205 tons/day urban sewage wastewater
treatment plant (AAO process)
学 院： 专业： 班级： 学 生：
指导教师（职称）： 完成时间：
2014年03月07日至2014 年06 月12日
摘 要
该毕业设计的题目为20万吨/天城市污水处理工程设计，应用的处理工艺为AAO工艺，具有脱氮除磷的效果。进水水质为CODCr =290mg/L，BOD5 =180mg/L，SS =200mg/L，NH3-N = 35mg/L，TP=6 mg/L , pH=7.0~8.5，出水水质为CODCr≤200mg/L，BOD5≤20mg/L，SS≤20mg/L，NH3-N≤15mg/L, TP≤1 mg/L，达到污水排放二级标准。 该污水厂的处理流程为：从粗格栅到泵房到细格栅到沉砂池，进入反应池，进入辐流式二次沉淀池，再进入消毒池，最后出水；从反应池排出的剩余污泥集中输送到污泥浓缩池，由剩余污泥泵直接输送到污泥脱水房脱水，最后外运处置。
关键词：AAO工艺 脱氮除磷 污水处理
Abstract
The subject of graduation is 1?205 tons/day of municipal wastewater treatment engineering design,Process the application process for the AAO,Has the effect of nitrogen and phosphorus removal.Influent water quality is CODCr = 290mg / L, BOD5 = 180mg / L, SS = 200mg / L, NH3-N = 35mg / L, TP = 6 mg / L, pH = 7.0 ~ 8.5,Effluent water quality is CODCr≤200mg/L，BOD5≤20mg/L，SS≤20mg/L，NH3-N≤15mg/L, TP≤1 mg/L，To secondary effluent standards. The sewage treatment plant process is: from coarse to fine grid to the grid to pump grit chamber,Into the reaction pool,Radial flow into the secondary sedimentation tank,Re-entering the disinfection of pool,Finally outflow of water.Discharged from the reactor sludge concentration delivered to the sludge thickener.By the sludge pump directly to the sludge dewatering house dehydrated, and finally Sinotrans disposal.
Keywords: AAO process Nitrogen and phosphorus removal Sewage Treatment
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广东石油化工学院毕业设计：20万吨/天城市污水处理工程设计（AAO工艺）
目录
第一章 概述 .............................................................................................................................. 1
1.1 设计任务 ..................................................................................................................... 1
1.1.1 设计题目 .......................................................................................................... 1 1.1.2 基本资料 .......................................................................................................... 1 1.1.3 设计任务 .......................................................................................................... 2 1.1.4 设计成果 .......................................................................................................... 2 1.2 设计需要使用的有关法规、标准、设计规范和资料 ............................................. 2 1.3 处理程度 ..................................................................................................................... 3 1.4 工艺比较选择 ............................................................................................................. 3 1.5 AAO法脱氮除磷工艺 ................................................................................................ 9 第二章 污水处理厂工艺设计及计算 ...................................................................................11
2.1 设计流量 ....................................................................................................................11
2.1.1设计规模 ..........................................................................................................11 2.1.2 设计最大流量与总变化系数 .........................................................................11 2.2 格栅设计计算 ............................................................................................................11 2.3 泵房设计计算 ........................................................................................................... 14 2.4 沉砂池设计 ............................................................................................................... 15 2.5 AAO生物反应池设计计算 ................................................................................... 17 2.6 二沉池设计 ............................................................................................................. 22 2.7 接触消毒池设计计算 ............................................................................................... 26 2.8 污泥浓缩池设计计算 ............................................................................................... 28 第三章 污水处理厂总体布置 ................................................................................................ 30
3.1 污水厂平面布置 ....................................................................................................... 30
3.1.1 污水处理厂平面布置的原则 ........................................................................ 30 3.1.2 污水处理厂的平面布置 ................................................................................ 31 3.2 污水厂的高程布置 ................................................................................................... 31
3.2.1 污水处理厂高程的布置方法 ........................................................................ 31 3.2.2 本污水处理厂高程计算 ................................................................................ 33
第四章 污水厂构筑物及设备汇总与费用核算 .................................................................... 36
4.1 设备部分 ................................................................................................................... 36 4.2土建部分 .................................................................................................................... 36 4.3 总投资费用 ............................................................................................................... 38 4.4 经济效益分析 ........................................................................................................... 38 第五章 结论 ............................................................................................................................ 40 第六章 环境保护 .................................................................................................................... 41 致 谢 ........................................................................................................................................ 42 参考文献 .................................................................................................................................. 43
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