摘要
为研究臭氧对污泥的破解效果,在剩余污泥中通入臭氧进行静态试验。结果表明,随着臭氧氧化时间的增加,臭氧对污泥的溶胞效果有不同程度的改善:污泥液相中蛋白质的浓度和UV254均上升,蛋白质浓度最高达56.3 mg/L,30 min时增幅约为4.52倍,此时UV254增加率达到46.21%,表明臭氧处理污泥的最佳时间为30 min;pH随时间增加逐渐降低,但降低幅度不大;通过镜检观察和粒径测定,臭氧可以促进污泥絮体的破坏,使絮体颗粒变小、变分散。
Static tests were carried out to study the effect of ozonic disintegration characteristics on waste activated sludge in laboratory.The results showed that ozone improved the effect of sodium hydroxide with increasing oxidizing time at different levels.A substantial increasement in the concentration of protein and UV254 were observed.The concentration of protein increased to 56.3 mg/L and had a largest increase of 40.81% with 30-minute ozonation.Meanwhile,UV254 was 46.21%more than the raw samples.The pH value reduced gradually with the increase of the ozone dose.The microscopic analysis and the particle size assay also showed that ozone favored the destruction of the activated sludge flocculate structures,re-duced and disrupted the crystal size.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第2期83-87,共5页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
广东省科技厅科技计划资助项目(2010B031700023)
