摘 要本次毕业设计的题目为 xx 市某污水处理厂工艺设计——倒置 AAO 工艺。设计主要任务是根据该市污水性质、排污规模的要求完成污水处理厂初步设计和单项处理构筑物设计。其中污水处理厂初步设计要完成设计说明书一份、污水处理厂总平面图一与污水处理厂污水与污泥高程图一；单项处理构筑物设计中，主要是完成主体处理构筑物平面图与剖面图与部分大图样。该污水处理厂工程，规模为 7 万吨/日。该污水处理厂的污水处理流程为：污水由市政排水管网经格栅由泵房提升进入到涡流沉砂池，进入倒置 AAO 反应池，进入辐流式二沉池，进入接触池，最后出水；污泥的流程为：从二次沉淀池池排出的剩余污泥进入回流污泥泵房，再由污水泵送入浓缩池，再进入储泥池，由浓缩污泥泵房提升送入污泥脱水间，最后泥饼外运处置。污水处理厂处理后的出水优于国家污水综合排放标准（GB)中的二级标准。所选择的倒置 AAO 工艺，具有良好的脱氮除磷功能。关键词：倒置 AAO 工艺，脱氮除磷ABSTRACTThe topic of this graduate design is about the design of the sewage treatment plant in the development area of economy and techonology in Da lian City. The technics of the plant is theinverted AAO process. The main task is the primary design of the plant and the shop drawing of the oxidation ditch pond.The task of the primary design is that a design book、a plan of the plant、the high drawing of the treatment of sludge and sewage; In the single disposal build design,the harvest is that the section plane drawing 、 the plan and some part magnifying drawings of the inverted AAO process.The construction of this plant is 70000 ton per day.The process of the sewage in the plant is that:The sewage runs from pump house to sand sinking pond,enters the pond of sedimentation tank,enters disinfection pond,then enters calculation trough,at last lets out.The process of the sludge is that: Surplus sludge from the sedimentation tank enters concentration pond,enters digestion pong,then it is dehydrated,at last i...
