污染控制技术及原理
龙焰,沈东升,劳慧敏,胡立芳,朱荫湄.生活垃圾填埋场不同粒径陈垃圾中微生物的分布特征[J].环境科学学报,2007,27(9):1485-1490
生活垃圾填埋场不同粒径陈垃圾中微生物的分布特征
- The distribution of microorganisms in various granules from aged landfill refuse
- 基金项目:国家自然科学基金资助项目(No.50478093);浙江省科技计划重点项目(No.2006C23071);杭州市科技发展计划(No.20061123B09)
- 摘要:用3种尺寸的方形筛筛分填埋龄为6~7a的陈垃圾,并对筛分得到的4种不同粒径垃圾中的微生物类群分布特征进行研究.研究结果表明,陈垃圾中含有非常丰富的微生物,可达到1012 CFU·g-1,其数量分布随粒径的变化为:(<4mm) >(8~25mm) >(4~8mm) >(>25mm);兼氧细菌在各粒径陈垃圾微生物中占绝对优势,其可达1012 CFU·g-1,其次为真菌和厌氧细菌,真菌最高可达107 CFU·g-1,厌氧细菌最高可达106 CFU·g-1,放线菌数量最少,但也能达105 CFU·g-1;同类群的微生物在不同粒径垃圾中的分布不同,不同粒径垃圾中不同微生物类群的数量组成也不相同;兼氧细菌和真菌数量对数值与各项理化指标线性回归方程表明,2类微生物明显受到含水率、浸提氨态氮、BDM和pH的影响.
- Abstract:The distribution characteristics of microorganisms in aged landfill refuse were investigated and then screened into four grades based on granule size.Alarge number of micro-organisms were present in the refuse, which had been aged for six to seven years,and the distribution of total microbial number in the refuse granules decreased in the order(<4 mm) >(8~25 mm) >(4~8 mm) >( >25 mm).Among the different microbial groups present in the refuse,facultative bacteria were predominant,at up to 1012 CFU·g-1.The quantities of anaerobic bacteria,fungi and actinomyces were 107 CFU·g-1,106 CFU·g-1,and 105 CFU·g-1,respectively.Regression analysis suggested that the facultative aerobic bacteria and fungi were significantly influenced by refuse pH,moisture,extractable ammonium and biological degraded matter(BDM).
摘要点击次数: 2175 全文下载次数: 2749