文档介绍：某城市污水处理厂设计
该污水处理厂工程,规模为7万吨/日。
该污水处理厂的污水处理流程为:污水由市政排水管网经格栅由泵房提升进入到涡流沉砂池,进入倒置AAO反应池,进入辐流式二沉池,进入接触池,最后出水;污泥的流程为:从二次沉淀池池排出的剩余污泥进入回流污泥泵房,再由污水泵送入浓缩池,再进入储泥池,由浓缩污泥泵房提升送入污泥脱水间,最后泥饼外运处置。
污水处理厂处理后的出水优于国家污水综合排放标准(GB)中的二级标准。
所选择的倒置AAO工艺,具有良好的脱氮除磷功能。
关键词:倒置AAO工艺,脱氮除磷
ABSTRACT
The topic of this graduate design is about the design of the sewage treatment plant in the development area of economy and techonology in Da lian City. The technics of the plant is the inverted AAO process. The main task is the primary design of the plant and the shop drawing of the oxidation ditch pond.
The task of the primary design is that a design book、a plan of the plant、the high drawing of the treatment 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 inverted AAO process.
The construction of this plant is 70000 ton per day.
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 pong, then it is dehydrated, at last it is carried out of the plant.
The outlet water of the plant meets the level two of the National Sewage Discharge Standard (GB8978-1996).
There is an inverted AAO process prevents sludge from eapending, promots releasing phosphorus ,and strengthens anti-nitration.
Key words:The inverted AAO process, Taking off the nitrogen and the phosphorus
目录
摘要 I
ABSTRACT II
前言 1
第一部分设计说明书 2
第一章设计概论 2
设计任务 2
设计目的 2
设计要求 2
设计数据及材料 3
处理程度的计算 4
第二章总体设计 5
工艺比较选择 5
主要生产构筑物工艺设计 16
格栅间 16
污水提升泵房 16
沉砂池 16
倒置AAO池 17
鼓风机房 17
二次沉淀池 17
接触消毒池 18
18
污泥浓缩池 18
脱水车间 19
第三章污水处理厂总体布置 20
污水厂平面布置 20
.