摘要
好氧颗粒污泥因具有良好的沉降性能、较高的生物量、对污染物较高的去除能力,以及在工程应用中占地面积较少和运行成本较低,近年来被广泛关注.本文综述了絮状污泥的颗粒化过程,好氧颗粒污泥形成的影响因素及其物理、化学和生物学特性.研究发现,好氧颗粒污泥在生活污水、高浓度有机废水和富含有毒有害物质的废水处理中均可发挥重要作用,可以高效去除污水中的氮磷污染物、工业废水中的有机物、毒性物质和重金属等.好氧颗粒污泥的形成机理存在4种假说,基于絮状污泥颗粒化过程中形成的胞外聚合物及其助凝作用被普遍认为是好氧颗粒污泥的形成机理.最后进行了问题分析和前景展望,认为突破培养过程相对漫长、培养条件相对严苛技术瓶颈的好氧颗粒污泥技术对废水处理效能的提升具有重要意义.
Aerobic granular sludge has attracted much attention for its high settling property, biomass retention, and contaminant removal efficiency as well as the subsequent low space requirement and operation expense in wastewater treatment plant. This review provides recent advances in study of aerobic granular sludge, including the formation process from fl℃sludge, formation influencing factors and physical, chemical and biological sludge characteristics. Many studies demonstrated the importance of aerobic granular sludge in treatment of domestic sewage, high-concentration organic wastewater and wastewater containing toxic and hazardous materials, which means that nitrogen, phosphorus, organics, toxic substance and heavy metal can be effectively removed by aerobic granular sludge. In addition, the formation mechanism of aerobic granular sludge is generally shown to be the formation of extracellular polymeric substances and their flocculation. Finally, the review discusses the problems and possible future trends of aerobic granular sludge： the aerobic granular sludge technology is promising in enhancing the efficiency of wastewater treatment if the technical bottlenecks of formation period and conditions are passed through.
出处
《应用与环境生物学报》
CAS
CSCD
北大核心
2014年第4期732-742,共11页
Chinese Journal of Applied and Environmental Biology
基金
国家水体污染控制与治理科技重大专项(2013ZX07314-002
2013ZX07315-003)
国家环境保护环境微生物利用与安全控制重点实验室开放基金(SMARC2013D006)
污染控制与资源化研究国家重点实验室开放课题(PCRRF13022)
中央高校基本科研业务费专项资金(JUSRP11434)资助~~
关键词
好氧颗粒污泥
颗粒化过程
胞外聚合物
废水处理
形成机理
aerobic granular sludge
granulation process
extracellular polymeric substances
wastewater treatment
formation mechanisms
