城市污泥高温好氧堆肥过程中碳氮含量的变化特征  

Characteristics of Carbon and Nitrogen Contents in High Temperature Aerobic Composting of Sewage Sludge

作　　者：林诚[1] 刘用波 林福光 李昱[1] Lin Cheng(Institute of Soil and Fertilizer,Fujian Academy of Agricultural Sciences,Fuzhou 350013,China)

机构地区：[1]福建省农业科学院土壤肥料研究所,福建福州350013 [2]福州市花乡园艺有限公司,福建福州350028

出　　处：《安徽农学通报》2019年第21期110-112,共3页Anhui Agricultural Science Bulletin

基　　金：福州市科技计划项目(2012-N-93)

摘　　要：采用高温好氧堆肥工艺,以菌渣、木屑等为辅料,研究城市污泥与辅料不同配比对堆肥过程中碳、氮含量的影响。结果表明:城市污泥与辅料不同配比在进行好氧堆肥情况下,均能在15d左右完成腐熟周期。各处理含水率随着堆肥时间的延长呈下降的趋势,pH值表现为先下降后上升,在堆肥进行到第19天时,达到7.67~8.36;有机质、全氮含量呈下降趋势,在第19天时,有机质、全氮含量分别下降6.72%~12.79%、0.54%~0.98%;不同处理堆体微生物量的碳、氮含量呈先上升后下降的趋势,在不同配比中,污泥比例越大,堆肥过程碳、氮含量损失越多,且微生物生物量碳、氮活性越低。In this paper,high temperature aerobic composting process was used to study the effects of different ratios of sewage sludge and auxiliary materials on carbon and nitrogen content in the composting process,using bacterial residue and sawdust as auxiliary materials. The results showed that the decomposition cycle of sewage sludge with different proportions of auxiliary materials could be completed in about 15 days when aerobic composting was carried out. The water content of each treatment decreased with the composting time prolonging,and the pH value decreased first and then increased. The pH value was 7.67-8.36 on the 19 th day of composting. The contents of organic matter and total nitrogen decreased by 6.72%-12.79% and 0.54-0.98% on the 19 th day of composting,respectively. The content of Microbial biomass carbon and Microbial biomass nitrogen increased first and then decreased. The larger the proportion of sludge,the more the loss of carbon and nitrogen in composting process,and the lower the activity of microbial biomass carbon and nitrogen.

关 键 词：城市污泥 好氧堆肥 有机质 全氮 微生物量碳 微生物量氮 

分 类 号：X703[环境科学与工程—环境工程]