NaOH改性污泥制备污泥水煤浆的成浆机理研究  

Study on the Slurrying Mechanism of Coal Water Slurry with Municipal Sludge Modified by NaOH

作　　者：马少莲[1,2] 吴国光[1,2] 周蕊[3] 

机构地区：[1]中国矿业大学化工学院,徐州221116 [2]煤炭加工与高效洁净利用教育部重点实验室,徐州221116 [3]中国矿业大学现代分析与计算中心,徐州221116

出　　处：《科学技术与工程》2016年第32期274-277,共4页Science Technology and Engineering

基　　金：国家自然基金(51204179);中央高校基本科研业务费专项资金资助(2014XT05);江苏高校优势学科建设工程项目(BK20141242)资助

摘　　要：采用NaOH对污泥进行改性;并通过Zeta电位、扫描电子显微镜和红外光谱等手段来考察改性前后污泥性质的改变。结果发现污泥在经NaOH处理后,电负性得到增强,孔隙结构减少,空间网状的絮凝体结构被破坏,亲水性官能团减少。对比成浆实验发现,污泥水煤浆的定黏浓度为61.75%,而改性污泥水煤浆的定黏浓度则可以提高到65.02%,且具有更好的流变特性。NaOH was applied as an alkaline modifier for municipal sludge. The different characteristics of sludge before / after modifying were studied by testing Zeta potentials,SEM pictures and infrared spectroscopy. The results shown that the electronegativity of modified sludge was enhanced. Pore structures and flocs networks were both destroyed with hydrophilic functional groups decreasing. Comparing slurrying experiments,the fixed-viscosity concentration of coal sludge slurry was 61. 75%,while that of modified-sludge was increased to 65. 02%. Additionally,coal modified-sludge slurry had better rheological behavior than coal sludge slurry.

关 键 词：NAOH 改性污泥 污泥水煤浆 成浆机理 

分 类 号：TQ519[化学工程]