Effect of solid contents on the controlled shear stress rheological properties of different types of sludge

作     者：Ting Li Yili Wang Yujing Dong 

作者机构：College of Environmental Science and EngineeringBeifing Key Lab for Source Control Technology of Water PollutionBeifing Forestry UniversityBeijing 100083China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2012年第24卷第11期

页      面：1917-1922页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Natural Science Foundation of China (No.51078035, 20977008) the Fundamental Research Funds for the Central Universities (No.JC2011-1, TD2010-5) the Ph.D.Programs Foundation of Ministry of Education of China (No.20100014110004) the High-Tech Research and Development Program (863)of China (No.2007AA06Z301) the Major Projects onthe Control and Rectification of Water Body Pollution (No.2008ZX07422-002-004, 2008ZX07314-006) 

主　　题：controlled shear stress test exponential law rheology sludge solid contents 

摘      要：Controlled shear stress （CSS） test was used to study the effect of solid contents on the corresponding rheological parameters for sludge. Three types of sludge with or without conditioning, including activated sludge （AS）, anaerobic digested sludge （ADS）, and water treatment residuals （WTRs）, were collected for the CSS test. Results showed that the yield stress and the cohesion energy of the sludge networks were improved with increased total suspending solid （TSS） contents in most cases. For the conditioned AS/ADS and the raw WTRs, exponential law was observed in the relationships between cohesion energy of material networks or yield stress and the TSS contents, whereas for the conditioned WTRs, only exponential law dependence was found between the parameters of shear modulus or critical strain and the TSS contents.