文档介绍：东海市城区污水处理厂及配套污水管网工程设计

作者:黄远征专业:给水排水工程班级:水本0406 指导教师: 王永磊
摘要:针对东海市污水现状,先对东海市城区的污水管网进行设计,再根据设计要求进、出水水质,出水水质达到一级B排放标准,设计采用A2/O污水处理工艺,这种处理工艺能满足脱氮除磷的要求,且出水水质较好。设计中主要构筑物有:粗格栅、提升泵房、细格栅、平流沉砂池、初沉池、A-A-O生物池、二沉池、污泥回流泵房、贮泥池和脱水机房,。
关键词:设计流量;平流沉砂池;生物池;辐流二沉淀池;污水泵站
The design of seweage and waste water plant in
DONGHAI city
Abstract:This design aims at the present condition of DONGHAI city waste water to be treated, First,we should draw out seweage of DONGHAI city with the request of a discharge quality stardards and we should control N and P removal and the effment one class B exhaustion standard, this design draws up to adopt the A2/O waste water process, this kind of process is fit to out request, and fluid quality are all better. The main constructions of this design are:The sewage pumping station and bar screen, calm flow grit chamber, biology pond, radial flow sedimentation tank, dirty mire reflux pump house, sludge thickener, the mire pond and sludge dewatering devices. The volume of wastewater is 45000 m3/ d.
Key words:Design the discharge ;calm fiow grit chamber;biology pond;radial flow sedimentation tank; sewage pumping station
1前言
由于东海市污染严重, 故对东海市进行污水处理及管道的布置。东海市的地形东北高南面低决定了其管道的布置方向,东海市污水中富含氮磷,处理工艺要求脱氮除磷。选择A-A-O工艺。由于季风的影响,决定了水厂的布置方位为城市的南方。
2城镇排水系统设计

东海市城区整个地形东北高西南低,有33米的坡降,无明显的分水界线。另外整个城区有八家排水量较大的工厂。根据东海市的情况,综合考虑排水体制的特点,经过经济效益、社会效益和环境效益的比较,