摘要
污泥生物干化是利用微生物高温好氧发酵过程中有机物降解所产生的生物热能，通过过程涮控手段促进水分蒸发，从而实现快速去除水分的一种干化处理工艺，文章对生物干化中嗜热微生物的特点从宏观和微观2个角度进行分析，得到了嗜热微生物的生长曲线；通过试验发现嗜热脂肪芽孢杆菌可以有效地干化污泥；同时对不同通风量下污泥温度和含水率随时间的变化进行了研究，得到了通风量为10L／min的污泥温度比5L／min的高3～4℃，污泥含水率降低趋势明显提高，污泥干化效果优于5L／min试样。
Sewage sludge bio-drying is using the bio-energy produced by biodegradation of organics to promote the evaporation. Thermophiles in sewage sludge bio-drying were analyzed from macro to micro and the growth curve was obtained. It was found that Bacillus stearothemophilus could dry sludge effectively. And it was also found that temperature of the sludge with air-flow rate 10 L/min was 3-4℃ higher than the sludge with air-flow rate 5 L/min and the drying effect was also better.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2014年第10期136-139,共4页
Environmental Science & Technology
基金
国家自然科学基金:剩余污泥生物干化过程的机理研究(51208313)
关键词
生物干化
嗜热菌
通风量
产热量
sludge bio-drying
thermophiles
air-flow rate
heat output
