摘要
以城市脱水污泥为研究对象,将其在不同干化温度下干化至恒重,采用氧弹式量热计测定干污泥热值.实验结果表明,剩余污泥比消化污泥干化恒重所需时间长;得到干污泥挥发份存留率和干化温度(100～600℃)之间的关系,并在两者之间进行函数拟合;随温度升高,两种污泥的热值都降低,干化温度大于350℃时,干化污泥热值几乎为零;污泥的适宜干化温度范围为150～250℃,为工业上干化处理污泥提供基本数据.
Oxygen-bomb calorimeter was used to determine the heat value of municipal dewatered sludge,which was made dry to constant weight at different temperatures.The results indicate that drying excess sludge takes more time than drying the digested sludge dried to the constand weight.There is Access to the relationship between dried sludge weight loss rate and the drying temperature（100～600℃）,and the fitting function between the two.With the increase of drying temperature,the heat value decreased.When the drying temperature is above 350℃,the heat value of dried sludge is almost zero.The optimization drying temperature range of sludge ranzes between 150～250℃.Experiment provided the basic data for the treatment of the sludge drying in industry.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2011年第6期900-904,共5页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
水体污染控制与治理科技重大专项(2010ZX07319-002)
西部建筑科技重点实验室开放研究基金项目(10kf06)
关键词
城市脱水污泥
氧弹式量热计
干化温度
挥发份存留率
热值
municipal dewatered sludge
oxygen-bomb calorimeter
the drying temperature
retention rate of volatile
heat value
