Abstract：Through determination of weight loss rates and dry basis change of cake sludge and spherical sludge dried at 100~300℃, differences of drying characteristics of the two kinds of sludge were analyzed. Cake sludge cracked and split into several small pieces, while spherical sludge only shrank without shape change. Different apparent change led to different drying process. Cake sludge drying process was divided into two stages:acceleration stage and deceleration stage, while spherical sludge drying process was divided into three stages: acceleration stage, constant speed stage and deceleration stage. The average drying rate of cake sludge was bigger than spherical sludge. When dried above 150℃, organic matter of cake sludge began to decompose with water evaporating, while organic matter of spherical sludge didn’t decompose until most of water evaporated.
马学文, 翁焕新, 章金骏. 不同形状污泥干燥特性的差异性及其成因分析[J]. 中国环境科学, 2011, 31(5): 803-809.
MA Xue-Wen, WENG Huan-Xin, ZHANG Jin-Jun. Difference and cause analysis of drying characteristics of different shapes sludge. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(5): 803-809.
