毕业论文__日处理8万吨的中型污水处理厂工艺设计说明书.doc

摘 要 水是人类最宝贵的自然资源之一，目前全世界正面临着越来越严重的缺水问题。因此，对水资源的保护，特别是对污水的净化处理和研究工作就显得十分重要，建设良好的污水处理厂势在必行。 在许多大中城市的缺水问题严重，以及城市中人口密度大，产生的污水量也就很多，所以城市污水处理厂更显得很重要。在我国，中小城市零星分布，因此，中小型污水处理厂更是建设中的重中之重。 中小型污水处理厂虽然不如大型的处理量大，但其成本少、易于建设。况且，中小型污水处理厂更适合我国城市众多的特点。处理工艺主要为活性污泥处理工艺以及其他先进的处理方法。本文对日处理8万吨的中型污水处理厂的工艺流程进行了简单的介绍。 关键词：污水处理厂；活性污泥；氧化Abstract The water is one of the natural resourceses that the mankind are most precious, the whole world faces the more and more serious water shortage problem face to face currently. Therefore, to the protection of the resources of water, seem to be very important to the decontamination processing and the research works of the dirty water especially, constuct the good and dirty water processing factory power at go necessarily. The water shortage problem severity of the city in mainly bigly, and a density of the city middleman is big, output and dirty water quantity also a lot of, so the dirty water of city processing the factory even seems to be very important. At the our country, distribute piecemeal in the small city, therefore, handle in the small scaled and dirty water the factory is also a construction in of heavy in it is heavy. The medium small scaled and dirty water processing factory although the not equal to large processing have great capacity, its cost is little and be easy to the construction. Besides, win the small scaled and dirty water processing factory more in keeping with our country the city numerous characteristicses. Mainly handle the craft to handle craft and the processing method of other forerunnerses for the live and dirty mire. This text handles the craft process that 80,000 medium-sized dirty waters of the tons handle the factory to carry on the simple introduction to the day. Key word: The dirty water processing factory; Live and dirty mire; Oxidize the ditch 目 录 第1章 前 言 1 第2章 水质标准、方案选择与工艺流程 2 2.1水质标准与工艺流程 2 2.2方案选择 2 2.3原始数据确定 3 第3章 设计流量的计算和污水水质污染程度的确定 4 3.1污水流量的计算 4 3.2污水水质污染程度的确定 4 第4章 主要构筑物设备及工艺设计 5 4.1格栅 5 4.2沉砂池 9 4.3巴氏计量槽