目 录
氧化沟工艺处理城市污水
专 业:环境工程 学 号:**********
学生姓名:*** 指导教师:**
摘 要
本次毕业设计的题目为某污水处理厂设计――氧化沟工艺。主要任务是工艺流程选择及构筑物设计和计算。
其中初步设计要完成设计说明书一份、污水处理厂总平面布置图一张、高程图一张,流程图一张,主要设备图一张,管道布置图一张;单项处理构筑物施工图设计中,主要是完成氧化沟平面图和剖面图。
该污水处理厂工程,总规模达到8万吨/日。该污水厂的污水处理流程为:从泵房到沉砂池,进入氧化沟,二沉池,最后出水;污泥的流程为:从二沉池排出的剩余污泥首先进入浓缩池,进行污泥浓缩,然后进入消化池,经过消化的污泥再送至带式压滤机,进一步脱水后,运至垃圾填埋场。
出水执行国家污水综合排放标准(GB8978-1996)二级标准。
关键词:氧化沟工艺;消化池
City sewage treatment by the Oxidize ditch method process
ABSTRACT
The topic of this design is the design of sewage treatment plant in one City using the oxidation ditch craft. The main task is the selections of process flow and the designs and calculation constructions used in process flow.
During the preliminary design ,we must complete a brochure, a general layout a map, an elevation map. a flow chart, a map of major equipment, piping layout, one; Construction of structures to deal with individual designs, is complete oxidation ditch plans and profiles. The sewage treatment plant project, the total amount to 80,000 tons / day. The wastewater treatment plant sewage treatment process : from the pumping station to Grit Chamber, enter oxidation ditch, two sedimentation tank, the final effluent; Sludge Process : two from the settling tank discharge of the first to reach the remaining sludge thickening tank, sludge thickening, and then enter Digester, After digestion of sludge sent to the belt filter presses, and further dehydration, transported to the landfill. Implementation of the national sewage effluent discharge standards (GB8978-1996) 2 standard.
Key words:The craft of oxidation ditch; digestion tank









