| 基于骨架构建体污泥脱水及其固化土工性能研究 |
| |
| 作者姓名： | 杨家宽 杨 晓 李亚林 张 铭 李 野 何 姝 |
| |
| 作者单位： | 华中科技大学环境科学与工程学院;宇星科技发展(深圳)有限公司 |
| |
| 基金项目： | 国家自然科学基金资助项目(51078162);教育部新世纪优秀人才计划项目(NCET-09-0392);中央高校基本科研业务费专项资金资助项目(2011TS123) |
| |
| 摘 要： | 以含水率为98.5%的污泥为研究对象,添加粉煤灰、生石灰等无机复合调理剂进行改性处理,研究其对泥饼固化体的比阻、含水率、最大干密度、渗透系数和无侧限抗压强度等性能的影响。结果表明,添加的粉煤灰和石灰起到骨架构建体作用,处理污泥的比阻从原污泥的109 s2/g降至107 s2/g,显著改善了污泥脱水性能。在不外掺水泥等其他固化剂的条件下,脱水后的泥饼固化体7d无侧限抗压强度大于100kPa,具有优良的固化土工性能。
|
| 关 键 词： | 污泥脱水 骨架构建体 污泥固化 土工试验 |
| 收稿时间： | 2011/7/30 0:00:00 |
Dewatering of sewage sludge with skeleton builder and engineering properties of dewatered sludge |
| |
| Authors: | Yang Jiakuan Yang Xiao Li Yalin Zhang Ming Li Ye and He Shu |
| |
| Institution: | 1.School of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;2.Universtar Science and Technology(Shenzhen) Co.,Ltd.,Shenzheng 518057,China) |
| |
| Abstract: | Raw sewage sludge with moisture content at 98.5% was dewatered with conditioners of fly ash and quick lime,and the specific resistance to filtration(SRF),moisture content,maximum dry density,permeability coefficient,and unconfined compression strength of the dewatered sludge were investigated.The results show that fly ash and lime have acted as skeleton builders for conditioning sewage sludge,and the SRF has decreased from 109 s2/g of raw sludge to 107 s2/g with conditioned sludge.Fly ash and lime can improve the dewatering properties of sludge,and without the use of any other additives such as cement the unconfined compression strength of 7-day curing sample from dewatered sludge is greater than 100 kPa,demonstrating excellent engineering properties. |
| |
| Keywords: | sludge dewatering skeleton builder solidification of sludge soil test |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《》浏览原始摘要信息 |
| 点击此处可从《》下载免费的PDF全文 |
|
