酸改性剩余污泥对亚甲基蓝吸附性能的研究  

Absorption capacity of the acid-modified excess sludge for methylene blue

作　　者：田辉[1] 崔岩[1] 刘亚纳[2] 赵黎[1] 

机构地区：[1]河南农业大学机电工程学院,河南郑州450002 [2]河南科技大学化工与制药学院,河南洛阳471003

出　　处：《河南农业大学学报》2013年第4期461-464,共4页Journal of Henan Agricultural University

基　　金：河南省教育厅自然科学研究计划项目(2009A150008)

摘　　要：用磷酸对剩余污泥进行改性,研究改性后的污泥对亚甲基蓝的吸附效果.结果表明,pH值增大对改性污泥的吸附有促进作用.在碱性条件下,改性污泥的吸附效果要优于未改性的污泥.温度升高,平衡时间缩短;温度在25,35,45℃时,平衡时间分别为6.5,4.5,3.5h,去除率分别为97.2%,92.2%和90.5%.改性剩余污泥对亚甲基蓝的吸附符合Freundlich等温吸附方程,该吸附是一个自发的放热过程.The remaining sludge was modified by phosphoric acid, and the absorption effect of the mod- ified sludge on methylene blue was studied. The experimental results showed that the absorption capac- ity increased with the increase of pH value, and the absorbing effect of the modified sludge on methyl- ene blue reached best under alkaline conditions. The absorption balance time was shortened with the increase of temperature. The absorption balance time was 6.5 came true for, 4.5 h, and 3.5 h, and the removal efficiencies were 97.2% , 92.2% , and 90.5% respectively when the temperatures were at 25, 35 ℃ and 45 ℃. The modified sludge absorption of methylene blue obeyed the Freundlich iso- therm equation, and the absorption was a spontaneous and exothermic process.

关 键 词：磷酸酸改污泥 亚甲基蓝 吸附效果 吸附热力学 

分 类 号：X131[环境科学与工程—环境科学]