文档介绍：4万吨污水处理厂氧化沟工艺设计说明书
摘要
随着我的逐步提高,环境保护措施的落实,以及市场经济的建立,排水事业作为城市的重要基础设施这一,也得到了蓬勃的发展。全国大多的城市都对老城区的给排水管网进行了改造,并且还兴建了一大批污水处理厂对城市的生活污水,工业废水进行处理。
本设计是对南京市建邺区某一排水工程设计。其设计范围包括:雨水管网工程、污水管网工程和污水处理厂工程。本次设计均采用了国家最新的有关规定、标准、和设计规范。
管网的体制采用的是分流制。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。
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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 . 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 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 hectares around in this the sewage treatment plant .
Keywords: solid