二段活性污泥法处理城市污水.doc

二段活性污泥法处理城市污水 摘要：乌鲁木齐河东污水处理厂污水处里工艺是采用国际领先的 AB 两段活性污泥法处理工艺，它是在两段活性污泥发和高负荷活性污泥法的基础上开发出来的一种新型生物处理工艺，在国内外城市生活污水处理方面以得到广泛的运用，对垃圾渗滤滤液，印染废水,饮料废水的处理也进行着小试研究。A段污水处理区主要进行污水的一级处理。机理是将活性污泥置于兼氧状态下吸附分离水中污染物，以达到初级净化的目的。B 段污水处理区主要进行污水的二级处理。机理是使活性污泥在好氧状态下，氧化分解水中的有机物，进一步净化污水水质，使其各项指标达到国家二级排放标准，排除厂外。它的运行实践表明，二段生物接触氧化法具有抗冲击负荷、容积负荷高、气水比低、运行管理简便、污水回用率高等工艺特点，可推广应用。 The dirty water in the river east of Urumqi handles the dirty water in factory is the foundation last development that live and dirty mire in the two pieces of AB to adopt nations be in the lead method handles craft in the craft, it is at live and dirty mire in two pieces hair with high carry a kind of new living creature that live and dirty mire method come out handles craft, to get in the aspects of domestic and international city living dirty water handling extensive application, to garbage liquid, print to dye the waste water, beverage waste water of handles to also proceed the small trying the research.A dirty water handles the main proceeding in area is dirty and aqueous a the class handles.The mechanism is to places the live and dirty mire in concurrently the oxygen appearance descend to adsorb the separation water inside pollutant, toing attain the purpose that entry-level decontamination.A dirty water handles the main proceeding in area is dirty and aqueous and second class to handle.The mechanism is to make live and dirty mire been under the good oxygen appearance, oxidizing the aquatic organic matter in decomposition, dirty the fluid matter of water in further decontamination, make the various of index sign attain the national second class exhaustion standard, the exclusion factory is outside.It of the movement practices the enunciation, two living creatures gets in touch with oxidize the method have the anti- pounds at burthen, capacity carry high, spirit water ratio low, circulate to manage the simple and dirty water return to use the high etc. in rate craft characteristics, can expand the application. 关键词： 生物接触氧化