文档介绍：5万m3/d xx污水
处理厂的工艺设计
摘要
随着经济的不断发展,城市规模的扩大,水环境污染的问题日渐突出。水环境的污染影响人类的身体健康,制约了经济建设的进一步发展。因此近年来我国兴建了大量的污水处理厂,对于消除水体污染,改善环境起到了积极作用。
xx市污水处理厂设计污水日处理能力为50000m3,属于小型污水处理厂。本设计采用三沟式氧化沟法处理城市污水,其特点是工艺流程简单,构筑物少;处理效果稳定,出水水质好;污泥产生量少,污泥的性质稳定。设计中对污水处理工艺和污泥处理方案进行了选择论证;对污水、污泥处理构筑物进行了工艺设计计算;对废水处理厂进行了平面、高程布置,并绘制了平面布置图、高程图。
关键词:城市污水,氧化沟法,污水处理
Abstract
As the economy develops constantly, the size of cities expands, the peoblem of water pollution increasingly obviously. The pollution of water environment affects the human health and hampers the further development of economic construction. So in recent years our country constructs a large number of sewage treatment plants. It has played a positive role for eliminating the water pollution and improving the environment.
The designed daily capacity of the city sewage treatment plant in QinHuangdao City is 50,000 m3. It is a small-sized sewage treatment plant. This design uses three-ditch oxidation ditch to treat urban sewage. The characters:simple process,less structures; stable effect, good water quality; less sludge, stable sludge nature. In the design, we demonstrate the wastewater treatment technology and sludge treatment programmers selectively; made a technology design of sludge treatment structures; layout the plane and elevation of the wastewater treatment plant; draw the layout map, elevation map.
Key words: Municipal wastewater, Oxidation ditch, Sewage treatment
目录
摘要 I
Abstract II
第1章绪论 1
课题背景 1
城市污水处理厂背景 1
城市概况 2
自然条件 3
第2章工艺选择 4
废水水质 4
工艺方案分析 5
工艺比较 5
5
SBR法 8
工艺确定 9
工艺流程 12
厂址选择 12
选择原则 12
第3章污水处理工艺设计计算 14
中格栅...................................................................................................14
污水提升泵...........................................................................................16
细格栅.................................................................