Study on the changes of cellulose and lignin in municipal solid waste with age
During the landfill process,the cellulose and lignin content of household waste will change with the increase of landfill age.To study the changes of cellulose and lignin in waste with age,the method of the National Renewable Energy Laboratory in the United States was used to measure the cellulose and lignin content in municipal solid waste(MSW)at different life stages and mechanical biological treatment(MBT)waste at the Tianziling landfill in Hangzhou.It analyzed the change law of cellulose and lignin content in MSW with age,as well as the differences in cellulose and lignin content between MBT waste and MSW.The results show that the degradation rate of lignin and cellulose in MSW varies from being fast to being slow with increasing age,but the degradation rate of cellulose is much higher than that of lignin.The ratio of cellulose to lignin decreases with age,and the magnitude of its decrease gradually decreases and tends to plateau.The cellulose content in MBT waste has significantly decreased compared to fresh waste,while the proportion of lignin in remaining waste has significantly increased.The MBT technology of Tianziling landfill has a good treatment effect,and can be used as technical reference for the treatment of waste in newly built landfills,as well as reference for the upgrading of existing landfill technologies.The study uses quantitative experiments to verify the advantages of MBT technology,providing strong support for the promotion of MBT technology.
municipal solid wastemechanical biological treatmentlignincelluloseagechange law
NETL
NSTL
万方数据
