Grit, fly ash, cinder residue, active carbon, air brick detritus were used as filtering media according to proper proportion for low concentration domestic sewage treatment.
选取粗砂、粉煤灰、细煤渣、活性炭和空心砖粉块作为介质，再按适当的比例配成填料处理柱，进行处理低浓度生活污水的研究。
The viscosity, combustion heat, sulfur content, carbon residue, ash, flash point, moisture and cetane value of biodiesel and its blending oils with diesel were determined.
测定了生物柴油及其与石化柴油的调和油的粘度、燃烧热、硫含量、残炭、灰分、闪点、水分和十六烷值的含量。
Ash layers increase speed big, ash contains carbon residue quantity is not stable.
灰层增大速度大，灰中含残炭量不稳定。
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