好氧颗粒污泥稳定性影响因素及其强化策略研究进展OA

Compared with the traditional activated sludge,the aerobic granular sludge has the advantages of abundant biomass,excellent sedimentation and bateria colonization,and has obvious advantages in energy-saving,land-saving and efficient decontamination,so this kind of wastewater treatment is a promising technology for domestic and industrial wastewater treatment in cities and towns.Nonetheless,the poor stability of the aerobic granular structure and function during long-term operation limits the application of this technology in large scale.In essence,aerobic granular sludge is a highly coupled microbial community structure and metabolic characteristics.Based on this,this review foucsed onthe enrichment,growth and metabolism of functional microorganisms in aerobic granular sludge at macro-and micro-scale scales such as morphology,substrate distribution,community structure and function,the key factors affecting the stability of aerobic granular sludge were analyzed,and then from the perspectives of influent conditions and reactor operation mode to change the substrates mass transfer and microbial growth rate,the stable operation strategy of aerobic granular sludge process was summarized to provide the theoretical basis and technical support for the large-scale application of aerobic granular sludge process and the reduction of pollution and carbon in wastewater treatment.In the future,it is essential to reveal the mechanism on stability maintenance of aerobic granular sludge by combining computer vision technology with advanced spatial intelligence and microbial ecology theory.