摘要
研究了黄孢原毛平革菌与枯草芽孢杆菌复合菌剂在剩余污泥静态强制通风好氧堆肥中的作用.结果表明,根据堆肥过程中的温度(0～5d为中温阶段,6～12d为高温阶段,16～28d为腐熟阶段)变化,复合菌剂的变化导致堆体细菌数量明显高于空白堆体,且堆体中的嗜热真菌在高温期显著增多,促进了有机物的降解,加速了堆体的腐熟.试验组萝卜种子发芽指数(GI)相对空白组提前3d达到了50%,表明复合菌剂的加入迅速地降低了堆体的生物毒性,但由于相对浓缩效应使得堆肥产品Cd含量略有增加。
The study focused on the effect of microbial inoculant composite（Bacillus subtili and Phanerochaete chrysosporium） on static composting of excess activated sludge under forced ventilation.According to the temperature change in the composting process（mesophilic（0～5d）,thermophilic（6～12d）,and maturing（13～28d））,the number of bacterial population of the compost inoculated with the microbes was obviously higher than that of the control,and the population of the thermophilic fungi also significantly increased in the thermophilic stage,effectively enhanceing the degradation of organic matter and accelerateing maturing of the compost.The germination index（GI） of radish seed for the experiment group reached 50% spending 3d less than that for the control one,indicating that addition of the compound microbial inoculant acutely accelerated the decreasing of the compost biological toxicity.However,due to the relative enrichment effect,the Cd（II） content of compost product increased slightly.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2011年第2期253-258,共6页
China Environmental Science
基金
国家自然科学基金资助项目(50978087)
关键词
剩余污泥
复合菌剂
静态强制通风好氧堆肥
种子发芽指数
相对浓缩效应
excess activated sludge
compound microbial inoculants
static forced-aeration composting
germination index
enrichment effect
