双氧水对剩余污泥蛋白质释放过程研究  

Research on the releasing extracellular polymeric substances process from sludge by hydrogen peroxide

作　　者：马欣[1] 邵艳珊 王来福[1] 廉景燕[1] MA Xin SHAO Yan-shan WANG Lai-fu LIAN Jing-yan(School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, Chin)

机构地区：[1]天津理工大学化学化工学院,天津300384

出　　处：《天津理工大学学报》2016年第5期52-54,59,共4页Journal of Tianjin University of Technology

摘　　要：双氧水通过作用剩余污泥胞外聚合物可将污泥内微生物蛋白释放出来.通过筛选双氧水用量及处理时间得到:双氧水用量5mL/40mL,处理时间1.5h.在不同催化剂条件下研究双氧水对剩余污泥保外聚合物氧化程度的影响,发现适宜的催化剂能较大的提高胞外聚合物的氧化程度,通过实验得出最适催化剂为Cu2+和Fe2+,最佳浓度0.1%(w/v),处理时间1.5h.在研究双氧水氧化污泥机理中发现,在反应过程中pH一直在降低,说明双氧水在氧化污泥过程中有酸性物质生成.蛋白质溶解度受反应体系pH影响很大,适宜pH=8,最佳温度50℃.Hydrogen peroxide oxides the extracellular polymeric substances in sludge which makes protein releasing easily.Based on the tests, it is the best condition of reaction that dosage of hydrogen peroxide is 5 m L/40 m L（v/v）, reaction time is1.5h. It is discovered that a proper catalyst improves the oxidation of extracellular polymers. Cu^（2＋） or Fe^（2＋） is the best catalyst.Concentration is 0.1%（w/v）; reaction time is 1.5 h. Besides, during the reaction, the p H keeps declining, which means the reaction produces H~＋. pH has a significant influence on protein dissolving, while the best condition of dissolving is in 50 ℃ and pH is 8.

关 键 词：剩余污泥 胞外聚合物 双氧水 蛋白质 催化剂 

分 类 号：X705[环境科学与工程—环境工程]