The Effect of High Speed Mixing and Polymer Dosing Rates on the Geometric and Rheological Characteristics of Conditioned Anaerobic Digested Sludge (ADS)
In this study, the effects of high speed mixing and polymer dosing rates on the geometric and rheological characteristics of conditioned anaerobic digested sludge (ADS) with the polymer zetag7557 were investigated. The results showed that both the high speed mixing time and polymer dosing time had important effects on the emergence of the initial peak in test curves. A high speed mixing time within 60s or a polymer dosing time of 5s was sufficient for observation of the initial peak in flow curves. The extension of zetag7557 dosing time can also lead to the gradual decrease in the initial peak size of test curves and small aggregates formation with a decrease in two-dimensional fractal dimensions (D2). The initial peak in the test curves was observed when high speed mixing intensities increased up to 300rpm, where the smaller and less compact aggregates were formed. All of the rheological and geometric parameters were somewhat correlated with fractal dimension-D2P(based on regression analysis of the logarithmics of area and perimeter). The median diameters of the aggregates were well correlated with one-dimensional fractal dimensions(D1).
Yi-li WANG Steven-K DENTEL
College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China, 10008 Department of Civil and Environmental Engineering, University of Delaware, Newark, Delaware, USA, 19
国际会议
The Fifth International Conference on Waste Management and Technology(第五届固体废物管理与技术国际会议)
北京
英文
441-445
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）