某市政污水处理工程工艺设计

论文总字数：32471字

摘 要

八卦洲现有面积56.41km²，人口近4.0万人，目前尚无水处理设施。为了相应可持续发展理念，八卦洲需要新建一座污水处理厂。本设计将针对八卦洲现有面积和服务人口提出污水处理的设计方案。

在这项污水处理厂工程设计中，厂中将设置粗格栅池、提升泵房、细格栅、沉砂池、改良型A2/O生化池、二沉池、消毒池等。目的是将八卦洲的进水通过污水处理厂的净化，达到国家排放标准一级A标准。八卦洲污水处理厂出水水质执行《城镇污水处理厂污染物排放标准》一级A标准，同时为污水处理厂后期提标至准Ⅳ类水留有余地。

污水处理厂建设规划为日处理量1万吨，一期工程建设日处理量为五千吨。其中核心工艺是改良A2/O的生物处理阶段。为了净化水质，达到出水的一级A标准，在一定条件下创造生物反应池中厌氧、缺氧、好氧环境，在池中降解有机物的是沉积的活性污泥。一期建设1座，二期新增1座。土建及设备规模0.5万m³/d，变化系数1.0。其他构筑物按1.0万m³/d进行土建设计。

关键词：八卦洲，污水处理厂，一级A，A2/O工艺

Abstract

The existing area of Baguao is 56.41km2, with a population of nearly 40,000. There is no water treatment facility at present. For the corresponding sustainable development concept, Baguazhou needs to build a new sewage treatment plant. This design will propose a sewage treatment design plan for the existing area and service population of Baguazhou.

In this sewage treatment plant engineering design, the factory will set up coarse grid pool, lift pump room, fine grid, grit chamber, improved A2/O biochemical pool, second settling pond, disinfection tank and so on. The purpose is to pass the water from Baguazhou through the purification of the sewage treatment plant to the national emission standard Class A standard. The quality of the effluent from the Baguazhou Sewage Treatment Plant complies with the Class I A Standard for Discharge Standards of Pollutants from Urban Wastewater Treatment Plants, and it also provides room for the subsequent treatment of the WWTP to standard Class IV water.

This treatment plant construction plans for the daily processing capacity of 10,000 tons, the first-phase project construction capacity of 5,000 tons per day. One of the core processes is the modified A2/O biological treatment stage. In order to purify the water quality and achieve the first-grade A standard of effluent, the anaerobic, anoxic, and aerobic environments in the bioreactor are created under certain conditions. Degradation of organic matter in the pond is the deposition of activated sludge. One building will be built in the first phase and one will be added in the second phase. The scale of civil engineering and equipment is 0.5 million m3/d with a coefficient of variation of 1.0. Other structures are designed for civil engineering at 10,000 m3/d.

KEY WORDS: Baguazhou, Sewage Treatment Plant, Grade A, A2/O Process

目录

摘要 I

Abstract II

第1章 绪论 1

1.1 设计背景 1

1.2 八卦洲城镇概况 1

1.2.1 地理位置 1

1.2.2 自然条件 1

1.3 八卦洲给排水现状 1

1.3.1 区域给水现状 1

1.3.2 区域排水现状 2

1.4 设计进水水质 3

1.5 设计出水水质 5

1.6 尾水计量及排放 5

1.6.1 尾水计量 5

1.6.2 尾水排放 5

1.7 生化处理方案选择 5

1.8 流程选择 9

1.9 结论 9

第2章 设计计算书 10

2.1 基本设计参数 10

2.2 粗格栅 10

2.3 进水泵房 11

2.4 细格栅 12

2.5 曝气沉砂池 12

2.6 生物池 13

第3章 工艺设计 19

3.1 设计依据 19

3.3 事故调节池 20

3.4 细格栅及曝气沉砂池 21

3.5 改良A²O生化池 22

3.6 配水井及污泥回流泵房 23

3.7 二沉池 24

3.8 深床滤池及反冲洗设备间 25

3.9 接触消毒池及中水泵房 26

3.10 加药间及机修间 27

3.11 储泥池 29

3.12 污泥脱水机房及料仓 30

3.13 附属建构筑物 31

3.14 工艺设备表 31

第4章 平面及总图设计 39

4.1 总图设计 39

4.2 竖向高程设计 40

第5章 总结 42

致 谢 43

参考文献 44

绪论

设计背景

八卦洲目前尚无水处理设施。为了相应可持续发展理念，八卦洲需要新建一座污水处理厂。本设计将针对八卦洲现有面积和服务人口提出污水处理的设计方案。

八卦洲城镇概况

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