摘要
近年来,随着污水处理厂的不断发展,作为污水处理厂副产物的城市污泥的总产量也不断增加,对其处置及综合利用技术要求越来越高。污泥用于土壤改良时,其中有机质的含量具有重要作用,然而目前仍然没有污泥标准的检测方法。本文在参考了土壤有机质测定方法的基础上,采用重铬酸钾容量法测定城市污泥中有机质含量,方法稳定简便可靠,实际样品的加标回收率在90%~110%,可作为标准方法测定城市污泥中的有机质含量。
Recently,with the continuous development of sewage treatment plants,the total output of municipal sludge as a by-product of sewage treatment plant is also increasing. When the sludge is used for soil improvement,the content of organic matter has an important role; however, there is still no standard test method for sludge. Based on soil organic matter determination method on the determination of the content of organic matter,we use the potassium dichromate volumetric method for the determination of organic matter content in city sludge,which is stable,simple and reliable. And finally we got a recovery rate of 90-110% in real samples,which can be used as a standard method for the determination of organic matter content of sludge in the city.
出处
《环境与可持续发展》
2016年第5期222-224,共3页
Environment and Sustainable Development
关键词
城市污泥
有机质
重铬酸钾容量法
municipal sewage sludge
Organic Matter
potassium dichromate method
