I摘要 近年来，随着经济不断发展，城市规模的扩大，水污染问题日益突出。水质的恶化以及水量的减少，不仅严重影响人们的健康生活，也限制了当地的经济发展。建设污水处理厂，对防治当地水污染起着非常重要的作用。本设计是山东省聊城市污水处理厂的初步设计。主要任务是根据设计任务书中的原始数据和资料，完成对该污水处理厂的设计和计算，并根据计算所得数据绘制相应的平面图高程图，另外对污水处理厂内主要构筑物绘制平抛面图。设计的污水处理厂出水水质要达到国家《城镇污水处理厂污染物排放标准》（GB18918-2002）中一级标准的 A 级排放标准。本工程设计日处理水量处理水量为 100000m3/d 的城市生活污水，原污水中含氮量较高，经过对各种工艺优缺点的比较，选用 A/O 方法进行处理。其特点是工艺流程简单、投资费用较低、沉淀效果好。适用于大中型城市污水处理厂。将建设格栅间、污水提升泵房、平流沉砂池、平流沉淀池、A/O 生化池和二沉池等主要处理构筑物，污泥浓缩池、污泥消化和污泥脱水等污泥处理构筑物。关键词：城市水污染 污水处理 A/O 工艺 IIAbstract In recent years, Water pollution problems have become increasingly prominent with the continuous development of economy and the expansion of the city. The deterioration of water quality and water quantity decrease, not only seriously affects people's health and life, but also limits the development of local economy. The construction of sewage treatment plant plays a very important part in the prevention and control of local water pollution. The design is the preliminary design of Liaocheng city sewage treatment plant of Shandong province. The main task is to complete the design and calculation of the sewage treatment plant according to the original data, and draw the corresponding plan elevation map data, in addition to the sewage treatment plant main buildings draw section figure. The design of this project, the daily processing of water treatment for sewage water city 100000 m3/d, the original waste water with high nitrogen content, after comparing the advantages and disadvantages of each process, and choose the A / 0 technology. It has many characteristics such as:simple process, low investment cost, good sedimentation effect and it is suitable for the sewage treatment plant of large and medium-sized city. The construction of grille room, sewage pumping station, horizontal flow grit chamber, sedimentation tank, A / 0 and second settling tank ,and sludge thickening tank and other sludge treatment structures. Keywords: City water pollution Solid water treatment A/O technology III目 录摘要.......................................................................ⅠAbstract.....................................................................Ⅱ第一章 设计概况.............................................................11.1 设计任务.................................................................11.2 设计资料.................................................................11.3 设计原则.................................................................2第二章 工艺流程的选择.......................................................32.1 确定污水处理方式的原则...................................................32.2 污水处理工艺简介.................................
