摘要
为了研究复合微生物菌剂对污泥堆肥的作用效果,以消化污泥、锯末和回流堆肥为原料,接种不同剂量(0、0.2%、0.5%)的复合微生物菌剂进行室外露天堆肥,分析了温度、含水率、pH值、全碳(TC)、全氮(TN)、种子发芽指数(germination index,GI)的动态变化,结果表明:各堆体温度保持在50℃以上的时间均超过7 d,满足堆肥卫生标准;接种复合微生物菌剂的堆体升温速率和温度最高值均大于未接种堆体,接种复合微生物菌剂有利于增加堆体水分散失量,加快堆体有机质降解速度,降低堆体氮的损失量,提高GI值;其中微生物菌剂接种量为0.5%的堆体,接种处理对水分散失、氮损失的控制和GI值的增加效果较明显。
The effect of compound microbial inoculant was researched in the aerobic composting process by using sewage sludge, sawdust and recycled compost as the major raw materials. The dynamic changes of temperature, moisture, pH value, total carbon and nitrogen, and the germination index were reported. The results showed that the duration of high temperature of 50 ℃ and 55 ℃ all exceeded 7 days and the compost conformed to the sanitary standard of the aerobic composting. The temperature rising rate and the maximum temperature of those treatments with inoculation were higher than that of those treatments without inoculation and the inoculation treatments had been proved effective in the reduction of the moisture, accelerating the decomposing of organic matters, decreasing the nitrogen loss, and improvement of the composting maturity. The treatment of inoculating 0.5% was more effective than others.
出处
《环境工程学报》
CAS
CSCD
北大核心
2008年第2期266-269,共4页
Chinese Journal of Environmental Engineering
基金
北京市生态学重点学科(XK10019440)
北京都市农业学科群建设项目(XK100190553)
广东省农业攻关项目资助(2006A20302001)
关键词
污泥
复合微生物菌剂
堆肥
sewage sludge
compound microbial inoculant
composting
