摘要
利用TG-FTIR系统,分析了污泥在升温过程中的质量变化,以及氧气浓度对失重过程和气体释放的影响。研究结果表明:污泥的失重过程可分为四个阶段,即水分蒸发-有机质挥发和分解-有机质分解和燃烧-碳燃烧;氧气浓度越大,有机质挥发和分解速率越大;本次实验中氧气浓度为17.65%的气氛下,污泥中有机质能够完全分解或燃烧,释放的气体量最大;在氧气浓度为6.67%和12.65%的气氛下,污泥中的部分有机物并不能完全分解和燃烧。
The use of TG-FTIR system by which we analyze the mass of the sludge changes in the heating process and influences of weight loss of sludge and evolved gas affected by the different oxygen concentration The results showed that： the process of weight loss of the sludge can be divided into four stages, namely water evaporation-volatilization and decomposition of organic matter-decomposition and combustion of organic matter-carbon combustion; the greater the oxygen concentration, the greater the rate of decomposition and volatile of organic matter; under 17.65% oxygen concentration of atmosphere, the organic matter in the sludge can be complete decomposition or combustion, and the maximum amount of gas released; under the oxygen concentration of 6.67% and 12.65% of the atmosphere, and the organic portion of the sludge is not completely decomposed and combustion; at oxygen 17. 65% concentration of the atmosphere, the maximum amount of gas released from the sludge during the weight loss.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2014年第4期858-862,共5页
Bulletin of the Chinese Ceramic Society
基金
水体污染控制与治理科技重大专项资助(2010ZX07319-002)
陕西省科学技术研究发展计划项目资助(2013K13-02-05)
