生态环境学报2017，Vol.26Issue(1)：154-158,5.DOI:10.16258/j.cnki.1674-5906.2017.01.023
污泥堆腐过程中腐殖酸组分及结构变化特征
The Variation Characteristics of Humic Substances' Components and Structure in Sewage Sludge during Composting
摘要
Abstract
Sewage sludge originates as a by-product from the waste water treatment process.It includes lots of toxic and harmful substances such as heavy meatals,organic pollutants,pathogenic bacterias and parasitic ovums.In order to clarify the effects of composting on humic substances in sewage sludge,this study conducted composting experiment for 30 days under the initial condions of sewage sludge ∶ peat ∶ straw=3 ∶ 1 ∶ 2 (calculated by dry weight) and 55％ water content.The variation of the component and structure of humic substances in sewage sludge that occurred during composting was studied through the instruments of ultraviolet spectrograph and infrared spectrograph.The results indicated that,the concentrations of humic substances-carbon increased after an early decrease;the concentrations of humic acids-carbon ranged from 23.5 g·kg-1 to 51.4 g·kg-1 with a increasing rate of 118.9％,while the concentrations of fulvic acids-carbon ranged from 46.1 g·kg-1 to 20.8 g·kg-1 with a reduction rate of 54.8％.Ultraviolet spectroscopy detected no obvious change in the wavelength of the maximum absorption peak,but the peak shape was broadened,with decreased E465/E665 ratio.Fourier transform infrared spectroscopy revealed the similar peak pattems for humic acids and fulvic acids,but the intensities of some peaks became stronger at the end of the composting.The aromatization and humification of humic acids and fulvic acids increased during sewage sludge composting.关键词
污泥堆腐/胡敏酸/富里酸/光谱特征Key words
sewage sludge composting/humic acids/fulvic acids/spectroscopy characteristics分类
农业科技引用本文复制引用
王杰,闫鹏举,杨春璐,袁雅婷,吴新颜,韩晓昕,潘潇涵,陈忠林..污泥堆腐过程中腐殖酸组分及结构变化特征[J].生态环境学报,2017,26(1):154-158,5.基金项目
辽宁省博士启动基金项目(20121033) （20121033）
辽宁大学“大学生创新创业训练计划项目”(201610140139) （201610140139）
