堆体覆盖物对城市污泥堆肥保氮效果研究  

Effect of Mulching Material on Preserving Nitrogen During Municipal Sludge Composting

作　　者：陈莹[1] 孙克君[1,2] 张俊涛[1] 刘新鲁[1] 廖宗文[2] 刘聪[1] 阮琳[1] 

机构地区：[1]广州市园林科学研究所,广东广州510405 [2]华南农业大学资源环境学院,广东广州510642

出　　处：《华南农业大学学报》2012年第2期146-148,共3页Journal of South China Agricultural University

基　　金：国家建设部研究开发项目(2007-K6-40);广州市科技计划项目(2006z2-I0011);广东省教育部产学研结合项目(2010B090400159)

摘　　要：以城市污泥和面包虫屎为堆肥物料,选取膨润土和蚯蚓粪作为堆体覆盖物,采用室内模拟堆肥方法,研究了堆体覆盖物在堆肥过程中的保氮效果.结果表明:联合使用膨润土和蚯蚓粪可以起到较好的保氮作用,并且堆肥物料表面先覆盖蚯蚓粪再覆盖膨润土的效果优于先覆盖膨润土再覆盖蚯蚓粪,其7 d的NH3累积释放量较对照降低79.58%.Bentonite and wormcast were used as mulching material,and indoor simulation experiments were carried out to study the effect of the superstratum of pile on preserving nitrogen during municipal sludge composting.The results showed that wormcast combined with bentonite could play a good role in preserving nitrogen during municipal sludge composting.The effect of covering the pile with wormcast firstly and bentonite secondly was better than that of covering the pile with bentonite firstly and wormcast secondly.Compared to control,the accumulative amount of ammonia emission of the treatment of covering the pile with wormcast firstly and with bentonite secondly decreased by 79.58%.

关 键 词：城市污泥 堆肥 堆体覆盖物 保氮 

分 类 号：X705[环境科学与工程—环境工程]