AAO工艺毕业设计.doc

目录
摘要 Ⅳ
引言 1
1 设计说明书 1
1
1
1
1
2
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3
6
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8
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8
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10
2 设计计算书 10
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12
15
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18
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26
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29
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3 污水厂平面布置 32
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4 高程计算 33
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A2/O池 35
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5 投资估算 35
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44
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(包括行政管理费、辅助材料费)E6 40
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6 结论 40
致谢 41
参考文献 42
摘要
本设计为临海市污水处理厂的初步设计。由于进水的BOD:N:P=218:45:8,污水经二级生物处理后,氮、磷将难以达标,必须进行脱氮除磷处理。因此,本方案决定选用A2/O工艺。工艺流程为:“格栅——曝气沉砂池——厌氧池——缺氧池——好氧池——二沉池”。根据国内众多城市污水处理厂运行结果,A2/O工艺处理出水一般可达到《GB18918-2002》排放标准的一级B标准,能够确保城市周边海洋水体的环境要求。
关键词:城市污水;临海市;A2/O工艺;脱氮除磷;初步设计
The method design for the Linhai wastewater treatment plant method design
Student : Liang Ning Teacher : Cheng Guanwen
Abstract:The design is a primary design for the Linhai wastewater treatment plant. Because of BOD:N:P=218:45:8 of the enter water, wastewater by way of the secondary biological treatment, N and P will hardly plish standard, have to remove the N and P. therefore, this plan decided to adopt the anaerobic anoxic oxic. The process of the design is described as the following: Screening——Aerated Sediment tank——Anaerobic tank——Anoxic tank——Oxic tank——Second Deposi