A2O处理城市污水5万吨毕业设计

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1、 第 1 页 摘摘 要要 本次毕业设计的题目为武汉某经济开发区污水处理厂设计OA/ 2 工艺。 主要任务是完成该经济开发区排水管网布置及污水处理厂初步设计和单项处理 构筑物施工图设计。 其中初步设计要完成设计说明书一份、污水处理厂总平面图一张及污水处 理厂污水与污泥高程图一张； 单项处理构筑物施工图设计中， 主要是完成OA/ 2 平面图和剖面图及部分大样图。 该污水处理厂工程，近期规模为5万吨/日。 该污水厂的污水处理流程为：从泵房到沉砂池，进入OA/ 2 反应池，进入 辐流式二次沉淀池，进入接触池，再进入巴氏计量槽，最后出水；污泥的流程 为：从OA/ 2 反应池排出的剩余污泥进入集泥配水井，

2、再由污水泵送入浓缩池， 再进入储泥池，最后外运处置。 污水处理厂处理后的出水优于国家污水综合排放标准(GB8978-1996)中的 一级标准。 所选择的OA/ 2 工艺，具有良好的脱氮除磷功能。 关键词：OA/ 2 工艺；脱氮除磷； 第 2 页 ABSTRACT The topic of this graduate design is about the design of the sewage disposal plant in the development area of economy and techonology in wuhan City. The technics of the

3、 plant is the Anaerobic-Anoxic-Oxic. 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 disposal of sludge and sewage;in the single disposal build design

4、,the harvest is that the section plane drawing、the plan and some part magnifying drawings of the Anaerobic-Anoxic-Oxic. The construction of this plant is 50000 steres 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