摘要
采用最大概率法和平板计数法[1] 测定城市有机垃圾堆肥过程中主要微生物类群的变化。实验表明 :中、高温好氧细菌在前 7d呈上升趋势 ,在第 7d达其最大值为 1.32× 10 13 /g干垃圾 ;随后 ,其数量随着氧含量的降低而逐渐下降。厌氧菌在前 10d呈上升趋势 ,到第 10d达到最大值 7.5 1× 10 5/ g干垃圾 ;随后随着营养物质的减少而减少。停止通气后 ,好氧菌中的兼性厌氧菌逐渐增多 ,严格好氧菌逐渐减少 ;厌氧菌中的兼性厌氧菌逐渐减少 ,而严格厌氧菌逐渐增多。高温放线菌 ,中温好、厌氧纤维素菌和高温好氧纤维素菌在发酵的前 4d均呈上升趋势 ,随即逐渐下降。中温放线菌和真菌只在发酵之初存在 ,其数量随着温度的上升和氧含量的下降而迅速下降至零。
The change of microbial flora during the compost of city organic refuse was studied using Most-Probable-Number (MPN) and plate counting. The number of aerobes increased in the first 7 days and reached to the peak at the 7th day. Then it decreased gradually as the oxygen content decreased. The number of anaerobes increased in the first 10 days, and reached the maximum at the 10th day. Then both aerobes and anaerobes decreased as the nutrition decreased. After stopping aeration, the number increased or decreased gradually according to their nature.
出处
《微生物学杂志》
CAS
CSCD
2002年第1期22-23,26,共3页
Journal of Microbiology
基金
中国科学院"九五"重大项目 (KY95T 0 3)
关键词
有机垃圾发酵
稀释法
四分法
微生物
fermentation of organic refuse, dilution method, quartering.
