標題: Effects of polymer dosage on alum sludge dewatering characteristics and physical properties
作者: Wu, CC
Huang, CP
Lee, DJ
環境工程研究所
Institute of Environmental Engineering
關鍵字: alum sludge;bound water;dewatering;dilatometer;fractal dimension;polymer;sludge conditioning
公開日期: 14-四月-1997
摘要: The proper use of polymers as conditioners is a critical aspect of dewatering processes. In this study, we investigate their physical properties, i.e. size, density and fractal dimension and correlate them with their dewatering characteristics (bound water content, CST and SRF) on alum sludge with cationic polymer conditioning. Using CST measurement to determine the optimum polymer dose may lead to an over-dosing for polymer conditioned sludge. Bound water depletion and interstitial water formation significantly affect the moisture content during polymer conditioning. Moreover, the magnitude of bound water content reflects net change in moisture content, which is decreased by bound water depletion and increased by water formation. Flee size and density measurement suggest poor dewatering performance and increased bound water content are attributable to enlargements in flee size and decreases in flee density. Experimental results indicate that increases in bound water and decreases in flee density are caused by variations of both flee size and aggregation configuration type, not degree of flee compactness.
URI: http://dx.doi.org/10.1016/S0927-7757(97)00006-X
http://hdl.handle.net/11536/603
ISSN: 0927-7757
DOI: 10.1016/S0927-7757(97)00006-X
期刊: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume: 122
Issue: 1-3
起始頁: 89
結束頁: 96
顯示於類別:期刊論文


文件中的檔案:

  1. A1997XB13200010.pdf