华北地区M市污水厂设计.doc

华北地区M市污水处理厂 毕业设计 系 别 环境科学与工程系 专 业 环境工程 学 号 907012 姓 名 指导老师 2011 年 月 日 污水处理厂设计，属于中小型型污水处理厂。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。 经技术经济分析，此设计方案投资总额为2619.53万元，废水处理成本为0.53元/ m3。 关键词：城市污水，污水处理，氧化沟法 North China Urban Sewage Treatment Plant M Abstract Author：Tutor：With the economy development and expanding of cities, the problem of water pollution increased 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 freatment of the city sewage treatment plant designed in M City is 30,000 m3,which belongs to big-sized sewage treatment plant. This design uses three oxidation ditch to treat urban sewage. The characters are follouing：simple process,less structures; stable effect, good water quality; less sludge, stable sludge. In the design, we demonstrate the wastewater treatment technology and sludge treatment ant 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. This project total investment is about 261,953,00Yuan, and processing unit cost is about 0.53 Yuan per cube meter. Key words: Municipal wastewater;Sewage treatment; Oxidation ditch 目录 1.1概述 1 1.1.1城市概况 1 1.1.2设计目的和意义 1 1.1.3设计内容 2 1.2设计原始资料 3 1.2.1自然资料 3 1.2.2气象资料 3 1.2.3排水资料 3 1.2.4 受纳水体资料 4 1.3设计水量 5 1.4设计水质 7 1.4.1生活污水水质 7 1.4.2工企业污水水质 8 1.4.3设计进水水质 8 1.4.4设计出水水质 10 1.5污染物处理程度 10 1.6设计原则及依据 12 2.1方案选择原则 12 2.2工艺方案选择 13 2.2.1氧化沟法与AAO法比较 13 2.2.2氧化沟系统的比选 16 2.2.3三沟式氧化沟 18 2.3工艺流程的确定 22 2.4主要构筑物的选择 22 2.4.1污水处理构筑物 22 2.4.2污泥处理构筑物 25 2.5污水处理厂布置 26 2.5.1污水处理厂厂址选择 26 2.5.2污水