南京市4万吨污水处理厂氧化沟工艺设计说明书.docVIP

4万吨污水处理厂氧化沟工艺设计说明书 摘要 污水处理厂设计规模近期40000 m3/d，远期60000m3/d，故本设计按近期设计,远期规划。污水厂二级处理出水排至河流下游。 污水处理厂处理流程为：污水→中格栅→提升泵房→细格栅→钟式沉砂池→氧化沟→二沉池→紫外消毒→出水。 污泥流程：剩余活性污泥→污泥提升泵房→浓缩脱水一化车间 →污泥外运。 本污水处理厂占地约为7.2公顷。 关键词：污水管网 雨水管网 氧化沟 浓缩脱水一体化设备 Process design of 40000t/d city sewage treatment plant Astract With the develop of our country society economy continuously, Vitalization is gradually increasing, Environmental protection measure of practical, and with establishing of the Market economy, Draining, As one of the important foundation facilities, also got a fast development. The city in the whole nation almost reform drainpipe net. And still built the dirty water of large quantity disposal the factory to discard the water to proceed to handle to city. This project is for designing sewerage engineering of Nanjing city Jianye District. The design includes stremwater drainage system and wastewater collecting system and sewage works . And this design all adopted national latest relevant provision, Standard, with design the norm. The system of pipe net adopts is the bridging system . Sewage treatment plant design scale now is 40000m3/d, in the future date is 60000m3/d . The rainfall is all putd in order into San Ming River and the handled sewage from the sewage plant put into River. The sewage treatment plant handle the distance travelled by a stream of water being : Sewage→Coarse screens→Sewage elevated pumb house→Fine screens→rotated Grit chamber→Oxidation ditch → Secondary sedimentation tank → UV Sterilize in pool→River. Sludge distance travelled by a stream of water : Remainder sludge→sludge elevated house →the concentration and dehydration workshop→ Transport outside the sludge Covers an area of and act as 7.2 hectares around in this the sewage treatment plant . Keywords: solid pipe net　 rainwater tule net Sewage treatment plant Oxidation ditch the concentration and dehydration workshop 目 录 摘 要 I Astract II 第一章 绪论 1 1.1 设计原则及目的 1 1.1.1 设计原则 1 1.1.2 设计目的 2 1.2 城市概况及自然条件 2 1