环境工程学报2017，Vol.11Issue(4)：2627-2632,6.DOI:10.12030/j.cjee.201601002
水分快速分析仪测定城市污泥的含水率
Moisture content of municipal sludges determination by rapid moisture tester
摘要
Abstract
Sewage sludge moisture content is measured frequently in wastewater treatment plants and sludge treatment and disposal facilities to assess the status and efficiency of treatment processes.The influence of sludge quality and particle size on the moisture content determination results for different municipal sludges was investigated by a rapid moisture tester.The results showed that sludge quality did not have much of an effect on the rapid test results,and the standard deviations for the original sludge,conventional dewatered sludge,and bioleaching dewatered sludge were 0.01％ to 0.05％,0.03％,and 0.03％,respectively.Compared with China's national standard method for moisture content determinations,the rapid tester produced errors that were larger when the dewatered sludge moisture content was lower,but the relative errors for conventional dewatered sludge and bioleaching dewatered sludge were only-2.09％ and-3.49％,respectively.The dewatered sludge particle size was found to be an important factor that affected the rapid test results.In addition,the results showed that the dewatered sludge after bioleaching had faster evaporation rates compared with those for conventional dewatered sludge under the same drying conditions.To improve the efficiency of treatment processes,the sludge quality and particle size of municipal sludge should be set to optimization values of ≤ 4 g and ≤ 3 mm,respectively.While these findings demonstrate that the rapid determination method can be valuable to use during production operations,China's national standard method should continue to be used for scientific research or laboratory experiments.关键词
快速法/国标法/城市污泥/含水率/质量/颗粒度Key words
rapid determination method/China national standard method/municipal sludge/sludge moisture content/sludge quality/sludge particle size分类
资源环境引用本文复制引用
宋永伟,王鹤茹,覃孔昌,周立祥..水分快速分析仪测定城市污泥的含水率[J].环境工程学报,2017,11(4):2627-2632,6.基金项目
国家自然科学基金资助项目(21177060) （21177060）
湖北省自然科学基金项目(2016CFB289) （2016CFB289）
中南财经政法大学人才引进基金(21141611307) （21141611307）
