摘要
设计出一种以热水为干燥介质的整体式太阳能干燥的中试系统,主要研究不同厚度的剩余污泥在不同季节的干燥情况。试验结果表明:夏季湿污泥的含水率从88%降到40%需要6～14 d,w(VSS)/w(TSS)从79%降到69%;梅雨季节含水率从91%降到40%需要9～26 d,w(VSS)/w(TSS)从58%降到46%;春季含水率从88%降到40%需要7～17 d,w(VSS)/w(TSS)从79%降到57%;秋季含水率从88%降到40%需要7～19 d,w(VSS)/w(TSS)从53%降到49%。夏季时最不利干燥厚度为0.29 m,梅雨季节为0.53 m,春季为0.26 m,秋季为0.31 m;在此基础上,与常用的转盘式干燥器相比,这种太阳能干燥装置能收到很好的经济和环境效益。
A pilot-scale integral solar drying system with water as heat transfer fluid was designed.Experiments were conducted to study drying characteristics of excess sludge of different heights in different seasons.The average sludge moisture content decreased from 88% to 40% in 6～14 d during summer,from 91% to 40% in 9～26 d in plum rain season,from 88% to 40% in 7～17 d in spring,and from 88% to 40% in 7～19 d in autumn.（VSS） /（TSS） was reduced from 79% to 69% during summer,from 58% to 46% in plum rain season,from 79% to 57% in spring,and from 53% to 49% in autumn.The most unfavorable drying height was 0.29m in summer,0.53m in plum rain season,0.26m in spring,and 0.31 m in autumn.Compared with a drum dryer,this kind of solar dying system has great economic and environmental effects.
出处
《环境工程》
CAS
CSCD
北大核心
2010年第4期79-82,共4页
Environmental Engineering
关键词
太阳能
剩余污泥
干燥特性
经济性分析
solar energy
excess sludge
drying characteristics
economic analysis
