造纸污泥与污水污泥的表观干燥动力学研究  

Study of the Apparent Drying Kinetics of Papermaking and Sewage Water Sludge

作　　者：楼波[1] 钱炜[1] 武德智[1] 

机构地区：[1]华南理工大学电力学院广东省绿色能源技术重点实验室,广东广州510640

出　　处：《热能动力工程》2012年第4期494-497,521,共4页Journal of Engineering for Thermal Energy and Power

基　　金：广州市应用基础研究专项基金资助项目(7421154389972)

摘　　要：对污泥处理采用表观干燥动力学研究是具有重要的应用指导意义。通过对相同比表面积3.24 cm2/g的造纸污泥与污水污泥在4种不同的温度(30、70、102、130℃)条件下进行实验对比,并进行动力学方程拟合。结果表明:干燥速率常数k是污泥干燥动力学研究中一个重要参数,造纸污泥的干燥速率常数比污水污泥的大;造纸污泥与污水污泥的活化能分别为26.847和27.423 kJ/mol,污水污泥的活化能比造纸污泥活化能稍大,这与污水污泥粘性较大有关。To study the apparent drying kinetics of sludge is of major significance for guiding sludge treatment.For this purpose,a contrast test of paper-making sludge and sewage water sludge with a same specific surface area of 3.24 cm^2/g at four temperatures(30℃,70℃,102℃ and 130℃) was performed and a fitting of the kinetic equation was conducted.It has been found that the drying rate constant k is an important parameter for studying the drying kinetics of sludge and the drying rate constant of the paper-making sludge is bigger than that of sewage water sludge.The activated energies of the paper-making and sewage water sludge are 26.84 kJ/mol and 27.423 kJ/mol respectively,indicating that the activated energy of the sewage water sludge is slightly bigger than that of the paper-making sludge.This depends on the fact that the viscosity of the sewage water sludge is comparatively big.

关 键 词：造纸污泥 污水污泥 干燥动力学 活化能 干燥速率 

分 类 号：TU992.3[建筑科学—市政工程]