给水排水工程专业——毕业设计说明书——定州市排水工程工艺设计城市排水管网与5.0×104 m3d 传统SBR污水处理系统.doc

摘 要 水是宝贵资源，可人们在用水的同时又向环境排放大量被污染的水。如不处理，势必造成对环境的污染，影响人们的身心健康，亦会给工农业生产等造成一定危害。大量的污水排放必将污染水体资源，进而导致总体环境质量降低，严重影响社会经济的发展。因此，有必要对污水处理厂加以建设，以满足污水量的增长。本设计为北京市通州区排水工程工艺设计。工作分四部分：第一，城市排水管网设计。设计并绘制城市污水、雨水管网。第二，方案比选。首先对几种工艺如A2/O工艺和A1O工艺等进行了比选，通过对各个工艺的特点和优缺点的比较，选择了A1O工艺。第三，设计计算。在进行完工艺比选后，进行计算工作，主要内容是根据污水量和其他参数，对各个构筑物，如中格栅、污水泵房、细格栅、沉砂池、初沉池、曝气池、接触池、污泥浓缩池、贮泥池、脱水机等进行了设计计算。另外水厂设计还对各个构筑物进行高程计算，确定每个构筑物的高程。第四，绘制设计图纸。 关键词：城市排水管网，城市污水、A1O工艺、污泥处理 ABSTRACT Water is one of the precious resources，but people have drained polluted water at the time of their using water. If the municipal wastewater can not be treated, environmental contamination certainly will appear; the peoples mind and body health must be affected heavily; and to some degree the damage to industrial and agricultural production will be caused. A great deal of sanitary sewage blow down into the environment necessarily cause the contamination of water body, then the total environmental quality lower, the development of the society economy will be serious influenced. Therefore, it is necessary to take into the construction to the sewage treatment plant, and so as to meet the increasing need for sewage treatment. This design is about the process design of drainage engineering of Tongzhou area in Beijing City. The work includes four parts: The first, municipal drainage pipe network. The design of the wastewater pipe network and the storm pipe network are carried out. The second, process comparison. First tow sewage treatment processes, such as the A1O process and the A?O processo, were chosen. After the compassion of the characteristics and advantages disadvantages of these processes, the A1O process was selected. The third, design calculation. The design was carried out after the process comparison had finished. The main work was to design and calculate the every configuration such as coarse screen，sewage pump station，fine screen，grit chamber，primary sedimentation tank, A1O biological reactor ,secondly sedimentation tank