好氧颗粒污泥及其在污水处理领域的研究进展

Research Progress of Aerobic Granular Sludge and Its Applications in Sewage Treatment

好氧颗粒污泥的形成受物理、化学、生物等诸多因素的影响,例如进水有机负荷的高低、水力剪切力的大小、沉降时间的长短及"营养匮乏期"都会影响到好氧颗粒污泥的形成。好氧颗粒污泥好氧-缺氧-厌氧的特殊空间结构使其能在同一反应器中实现同步脱氮除磷,对高浓度有机废水、含氮磷污水、含重金属有毒废水及工业废水等具有较好的处理效果。序批式反应器(SBR)具有工艺简单、运行费用低,耐冲击负荷、适应性强等独特的优点,因此在好氧颗粒污泥的培养研究方面具有较理想的效果,是目前污水处理领域的研究热点。

Formation mechanism of aerobic granular sludge（ AGS） is complex,and affected by physical,chemical and biological factors,including the organic loading of influent,the hydraulic shear force,the settling time and the period of lacking nutrition. The special structure aerobic- anoxic- anaerobic of aerobic granular sludge makes nitrogen and phosphorus removal synchronized in the same reactor. The removal efficient is especially high to organic wastewater with high concentration,wastewater with nitrogen and phosphorus,toxic wastewater with heavy metal. The Squencing batch reactor（ SBR） is characterized by simple process,low operation cost,good resistance to shock- loading and well- adapted. For its good treatment to AGS training,SBR is the research advantage in the field of wastewater treatment.