有机废水的好氧生物处理技术进展研究

Study on Aerobic Biological Treatment Technology of Organic Wastewater

好氧生物处理(Aerobic Biological Treatment)是废水生物处理中应用最为广泛的一大类方法。在有氧条件下,有机污染物作为好氧微生物的营养基质而被氧化分解,使污染物的浓度下降。好氧生物处理方法一般分为两大类:(1)活性污泥法,是利用悬浮生长的微生物絮体处理有机废水的一类好氧生物处理方法,这种微生物絮体就是活性污泥,它由好气性微生物及其代谢和吸附的有机物、无机物组成;(2)生物膜法,利用微生物在固体表面的附着生长对废水进行生物处理的技术。

The aerobic biological treatment is the widest method used in the wastewater biological treatment. Under the aerobic condition, the organic pollutant as the nutrition medium of aerobic micro-organism is oxidized and resolved to make the concentration of pollutant decreased. The aerobic biological treatment method is generally divided in two kinds of activated sludge process and biofilm process. The activated sludge process is an aerobic biological treatment method of utilizing the suspended growth of microbial floc to treat the organic wastewater. This kind of microbial floc is exactly activated sludge composed of aerobic microorganism and its metabolism and adsorption of organic matter and inorganic matter. The biofilm process is a technology of utilizing the growth of microorganisms on the surface of solid to biologically treat the wastewater.