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污水处理A2\\O工艺
摘 要
本次毕业设计的题目为新建城市污水处理厂设计（15万m3/天） 工艺。主要任务是完成个该地区污水的处理设计。
其中初步设计要完成设计说明书一份、污水处理厂总平面图一张及污水处理厂污水与污泥高程图一张；单项处理构筑物施工图设计中，主要是完成 平面图和剖面图及部分大样图。 该污水处理厂工程，规模为15万吨/日。
A2/O工艺的生物处理部分由厌氧池、缺氧池和好氧池组成。厌氧池主要功能是释放磷,同时部分有机物进行氨化。缺氧池的主要功能是脱氮。好氧池是多功能的,能够去除BOD、硝化和吸收磷。
该污水厂的污水处理流程为：从泵房到沉砂池，进入 反应池，进入辐流式二次沉淀池，再进入清水池，最后出水；污泥的流程为：从 反应池排出的剩余污泥进入集泥配水井，再由污水泵送入浓缩池，再进入消化池，最后进入脱水机房脱水，最后外运处置。
关键词： A2O；同步脱氮除磷；设计说明书
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Abstract
The topic of this graduate design is about the design of the sewage disposal plant in the area of a City. The technics of the plant is the Anaerobic-Anoxic-Oxic. The main task is the primary design of the plant .
The task of the primary design is that a design book、a plan of the plant、the high drawing of the disposal of sludge and sewage ;in the single disposal build design ,the harvest is that the section plane drawing、the plan and some part magnifying drawings of the Anaerobic-Anoxic- Oxic.
The construction of this plant is 160000 tones a day.
T-oxidize ditch and unoxidize pool are two important part and water flows into three ditchs in turn, also T-oxidize ditch plays the role of secondary settling. The unoxidize pond release phosphorus. Along with aeration distance, the dissolved oxygen density reduces. This make oxidize area and unoxdize area present in ture. Namely appears the nitration and the counter- nitration process in succession , get the result of denitrogenation. At the same time the fine oxygen district absorbs the phosphorus, get the result of getting rid of phosphorus.
The process of the sewage in the plant is that: The sewage runs from pump house to sand sinking pond, enters the pond of sedimentation tank, enters disinfection pond, then enters calculation trough ,at last lets out. The process of the sludge is that: Surplus sludge from the sedimentation tank enters concentration pond, enters digestion pond , enters automatically translated text: then enters automatically translated text:, at last it is carried out of the plant.
Key words：The Anaerobic-Anoxic-Oxic; Taking off the nitrogen and the phosphorus; Automatically translated text.
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目录 目 录
摘 要............................................................................................................................ I Abstract ........................................................................................................................ II 目 录.......................................................................................................................... III 第一章 设计概论 ...................................................................................................... 1 1.1设计任务............................................................................................................. 1 1.2.2 开发区自然条件：.................................................................................... 1 1.2.3 设计水量与水质........................................................................................ 2 第二章 工程概预算.................................................................................................... 4
污水处理厂设计规模............................................................................................ 4 工程估算................................................................................................................ 4 第三章 污水处理厂设计.............................................................................................. 6 3.1 污水处理厂址选择............................................................................................ 6 3.2 污水污泥处理工艺选择.................................................................................... 6 3.2.1水质............................................................................................................. 6 3.2.2污水、污泥处理工艺选择......................................................................... 6 3.3主要生产构筑物工艺设计............................................................................... 13 3.3.1 进水泵房.................................................................................................. 13 3.3.2 细格栅和沉砂池...................................................................................... 13 3.3.3初次沉淀池：........................................................................................... 14 3.3.4 A2/O池...................................................................................................... 14 3.3.5 鼓风机房.................................................................................................. 15 3.3.7 配水集泥井.............................................................................................. 15 3.3.8 污泥浓缩池.............................................................................................. 15 3.3.9 脱水车间.................................................................................................. 16 第四章 劳动定员及其附属构筑物............................................................................ 17 4.1劳动定员........................................................................................................... 17 4.2人员培训........................................................................................................... 17 4.3技术管理........................................................................................................... 18 4.4附属构筑物....................................................................................................... 18 4.5附属化验设备................................................................................................... 18 第五章 格栅的计算.................................................................................................... 20 5.1设计要求........................................................................................................... 20 5.2中格栅的设计计算........................................................................................... 20 5.3细格栅的设计计算........................................................................................... 22
III
目录
第六章 沉砂池的设计计算........................................................................................ 26 第七章 初次沉淀池的设计计算................................................................................ 28 7.1设计要点........................................................................................................... 28 7.2初次沉淀池的设计（为辐流式）................................................................... 28 第八章 A2/O反应池的设计计算................................................................................ 36 8.1设计要点........................................................................................................... 36 8.2设计计算........................................................................................................... 36 第九章 曝气池的设计计算........................................................................................ 42 9.1设计要点........................................................................................................... 42 9.2曝气池的设计................................................................................................... 42 第十章 二沉池的设计计算........................................................................................ 46 10.1设计要求......................................................................................................... 46 10.2.二次沉淀池的设计........................................................................................ 46 第十一章 清水池的设计计算.................................................................................... 48 第十二章 浓缩池的设计计算.................................................................................... 49 12.1设计要点......................................................................................................... 49 12.2.浓缩池的设计................................................................................................ 49 第十三章 消化池的设计计算.................................................................................... 51 13.1设计要点......................................................................................................... 51 13.2消化池的设计................................................................................................. 51 第十四章 污水处理厂总体布置................................................................................ 58 14.1污水厂平面布置............................................................................................. 58 14.1.1污水处理厂平面布的原则..................................................................... 58 14.1.2 污水处理厂的平面布置........................................................................ 60 14.2污水厂的高程布置......................................................................................... 61 14.2.1污水厂高程的布置方法......................................................................... 61 14.2.2本污水处理厂高程计算......................................................................... 62 14.2.3 污水处理部分高程计算........................................................................ 63 14.2.4 污泥处理部分搞程计算........................................................................ 65 结 论.......................................................................................................................... 67 参考文献 .................................................................................... 错误！未定义书签。
IV
第一章 设计概论 第一章 设计概论
1.1设计任务
本次毕业设计的主要任务是为新建城市污水处理厂设计（16万m3/天）做的设计。工程设计内容包括：
1、通过现场实习调研，查阅文献，进行传统、典型和先进方案的比较，分析优缺点，论证可行性，通过所给自然条件、城市特点及经济因素确定最终处理方案。
2、据所选方案，正确选择、设计计算污水处理构筑物。
3．进行污水处理厂各构筑物工艺计算：包括初步设计和图纸设计、设备选型，图中应有设备、材料一览表和工程进程表。
4．进行辅助建筑物(包括鼓风机房、泵房、脱水机房等)的设计：包括尺寸、面积、层数的确定；完成设备选型。
1.2 该地区的概况及自然条件
1.2.1 该地区的概况： 1.2.2 开发区自然条件：
1．地理位置：
东经118度08分至118度30分，北纬36度39分至36度37分。全年平均气温12.2℃。区内温度变化基本上反映了大陆性气候的特征。
2. 气象资料： （1）、风向：
春季：南风（东南） 夏季：南风（东南、西南） 秋季：南风、北风 冬季：西北风
（2）、气温：
年平均气温：7～8℃ 最高气温：34℃
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