全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

电渗透脱水污泥干燥特性曲线及干燥模型

Keywords: 污泥,电渗透脱水,干燥曲线,干燥模型

Full-Text   Cite this paper   Add to My Lib

Abstract:

通过电渗透脱水技术及自然风干技术两种预处理方式降低污泥含水率,当污泥初始含水率相近时,研究经两种方式处理后污泥的干燥特性曲线,并对电渗透脱水污泥干燥特性曲线的优势情况进行探讨。在40~120℃的低温条件下,研究电渗透脱水污泥(泥饼厚度为3.5mm)的干燥特性曲线并分析其干燥特性。通过所得电渗透脱水污泥的干燥特性曲线,引入薄层污泥干燥模型进行数值分析。结果表明,在实验条件下,电渗透脱水污泥的干燥速率要优于自然风干污泥的干燥速率。随着温度的升高,电渗透脱水污泥的干燥速率随之升高,干燥到所需含水率的时间则随之减少。Logarithmic模型比其他模型更适合描述薄层电渗透脱水污泥在低温条件下的干燥特性。

References

[1]  张振涛, 杨鲁伟, 周远, 等. 污泥太阳能干化技术研究进展. 科技导报, 2010, 28(22):39-42 Zhang Z. T., Yang L. W., Zhou Y., et al. Recent developments in wastewater sludge solar drying technology. Science and Technology Review, 2010, 28(22):39-42 (in Chinese)
[2]  Idfis A., Yen O. B., Hamid M. H., et a1. Drying kinetics and stabilization of sewage sludge in lagoon in hot climate. Water Science and Technology, 2002, 46(9):279-286
[3]  卢宁, 文一波, 魏婧娟. 污泥的电渗透脱水技术研究进展. 环境科学与管理, 2010, 35(3):85-87 Lu N., Wen Y.B., Wei J.J. Research on sewage sludge electro dewatering. Environmental Science and Management, 2010, 35(3):85-87 (in Chinese)
[4]  马德刚, 张书廷, 季民, 等. 污泥电渗透脱水操作条件的优化研究. 中国给水排水, 2005, 21(5):36-38 Ma D.G., Zhang S.T., Ji M., et al. Optimization of operating condition for sewage sludge dewatering by electro-osmosis technology. China Water & Wastewater, 2005, 21(5):36-38 (in Chinese)
[5]  郑磊, 于晓艳, 张书廷, 等. 操作条件对吸附分离辅助电渗透脱水特性的影响. 安徽农业科学, 2011, 39(34): 21253-21255 Zheng L., Yu X.Y., Zhang S.T., et al. Influence of operation conditions on electroosmotic dewatering performance assisted by absorptive separation. Journal of Anhui Agricultural Sciences, 2011, 39(34): 21253-21255 (in Chinese)
[6]  Midilli A. Determination of pistachio drying behaviour and conditions in a solar drying system. International Journal Energy Research, 2001, 25(8):715-725
[7]  Thakor N. J., Sokhansanj S., Sosulski F. W., et al. Mass and dimensional changes of single canola kernels during drying. Journal of Food Engineering, 1999, 40(3):153-160
[8]  周加祥, 余鹏, 刘铮, 等. 水平电场污泥脱水过程. 化工学报, 2001, 52(7): 635-638 Zhou J.X., Yu P., Liu Z., et al. Sludge dewatering in horizontal electric field. Journal of Chemical Industry and Engineering, 2001, 52(7): 635-638 (in Chinese)
[9]  于晓艳, 支苏丽, 张书廷, 等. 吸附分离辅助电渗透脱水过程中污泥的特性. 环境工程学报, 2012, 6(8): 2853-2858 Yu X.Y., Zhi S.L., Zhang S.T., et al. Characteristics of sludge during electroosmotic dewatering assisted by absorptive separation. Chinese Journal of Environmental Engineering, 2012, 6(8): 2853-2858(in Chinese)
[10]  姜瑞勋, 李爱民, 王伟云. 脱水污泥薄层干燥特性及动力学模型的分析. 中国环境科学, 2009, 29(1): 22-25 Jang R.X., Li A.M., Wang W.Y. Thin layer drying characteristics and kinetics model of dewatered sludge. China Environmental Science, 2009, 29(1): 22-25(in Chinese)
[11]  马学文. 城市污泥干燥特性及工艺研究. 杭州:浙江大学博士学位论文, 2008 Ma X.W. Research on drying characteristics and technology of sewage sludge. Hangzhou:Doctor Dissertation of Zhejiang University, 2008 (in Chinese)
[12]  刘凯. 污泥干燥和热重实验及动力学模型分析. 广州:华南理工大学硕士学位论文, 2011 Liu K. Experiment on drying and thermogravimetric of sludge and kinetics model analysis. Guangzhou:Master Dissertation of South China University of Technology, 2011 (in Chinese)
[13]  Ayensu A. Dehydration of food crops using a solar dryer with convective heat flow. Solar Energy, 1997, 59(4-6):121-126
[14]  Akgun N. A., Doymaz I. Modelling of olive cake thin-layer drying process. Journal of Food Engineering, 2005, 68(4):455-461
[15]  Henderson S. M., Pabis S. Grain drying theory, Ⅱ. Temperature effects on drying coefficients. Journal of Agricultural Engineering Research, 1961, 6(3):169-174
[16]  Togrul I. T., Pehlivan D. Mathematical modelling of solar drying of apricots in thin layers. Journal of Food Engineering, 2002, 55(3):209-216

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133