摘要
纺织印染废水成分复杂,含有大量染料、重金属等有毒难降解污染物,是最难处理的工业废水之一。传统的生物处理法因耐毒性差、处理负荷低、受外部环境影响等存在一定的局限性,难以高效处理该类废水。好氧颗粒污泥胞外聚合物含量高,且含有大量氨基、羧基等官能团,此外,其具有不同的氧化还原微环境,能够有效吸附、降解污染物。但好氧颗粒污泥对印染废水中重金属的去除仍存在局限性,对染料的脱色和矿化效率仍有较大提升空间。针对纺织印染废水的污染物特性,总结并论述好氧颗粒污泥技术的优点及其对废水中重金属、偶氮染料的去除机理;综述好氧颗粒污泥处理模拟与实际纺织印染废水的研究进展,并对其运行方式进行总结分析。基于重金属离子去除存在局限性、染料降解不够彻底、实际废水具有复杂性等各种问题,展望其发展方向,以期为今后好氧颗粒污泥高效处理纺织印染废水的研究提供参考。
Textile dyeing wastewater is one of the most difficult industrial wastewaters to treat because it contains a large amount of toxic and refractory pollutants such as dyes,heavy metals.The traditional biological treatment process has certain limitations,such as poor toxicity resistance,low treatment load,and being affected by the external environment,making it difficult to efficiently treat this type of wastewater.Aerobic granular sludge(AGS)has a high content of extracellular polymeric substances and contains a large number of functional groups such as amino groups and carboxyl groups.In addition,it has different redox microenvironments,which can effectively adsorb and degrade pollutants.However,there are still limitations in the removal of heavy metals from printing and dyeing wastewater by AGS, and there is still much room forimprovement in the decolorization and mineralization efficiency of dyes. According to the pollutantcharacteristics of textile dyeing wastewater, the advantages of AGS technology and the removal mechanism ofheavy metals and azo dyes in wastewater are summarized and discussed. The research progress of AGStreatment simulated and actual textile dyeing wastewater is reviewed, and the operation mode is summarizedand analyzed. Based on the limitations of heavy metal ion removal, insufficient dye degradation, and thecomplexity of actual wastewater, the development direction is prospected, in order to provide a reference for thefuture research on the efficient treatment of textile dyeing wastewater by AGS.
作者
翟俊
陈茸茸
金静
刘文博
段科萍
ZHAI Jun;CHEN Rongrong;JIN Jing;LIU Wenbo;DUAN Keping(College of Environment and Ecology,Chongqing University,Chongqing 400045,P.R.China;Institute for Smart City of Chongqing University in Liyang,Liyang 213300,Jiangsu,P.R.China;Liyang Water Conservancy Bureau,Liyang 213300,Jiangsu,P.R.China)
出处
《土木与环境工程学报（中英文）》
CSCD
北大核心
2023年第4期182-191,共10页
Journal of Civil and Environmental Engineering
基金
国家自然科学基金(51878093、52000015)。
关键词
好氧颗粒污泥
纺织印染废水
重金属污染
偶氮染料
aerobic granular sludge(AGS)
textile dyeing wastewater
heavy metals pollution
azo dyes
