Huang Qi-fei, Chen Tong-bin, Gao Ding, Huang Ze-chun
Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
J Environ Sci (China). 2005;17(6):1004-7.
Using data obtained with a full-scale sewage sludge composting facility, this paper studied the effects of ambient air temperature on the composting temperature with varying volume ratios of sewage sludge and recycled compost to bulking agent. Two volume ratios were examined experimentally, 1: 0: 1 and 3: 1: 2. The results show that composting temperature was influenced by ambient air temperature and the influence was more significant when composting was in the temperature rising process: composting temperature changed 2.4-6.5 degrees C when ambient air temperature changed 13 degrees C. On the other hand, the influence was not significant when composting was in the high-temperature and/or temperature falling process: composting temperature changed 0.75-1.3 degrees C when ambient air temperature changed 8-15 degrees C. Hysteresis effect was observed in composting temperature's responses to ambient air temperature. When the ventilation capability of pile was excellent (at a volume ratio of 1:0:1), the hysteresis time was short and ranging 1.1-1.2 h. On the contrary, when the proportion of added bulking agent was low, therefore less porosity in the substrate (at a volume ratio of 3:1:2), the hysteresis time was long and ranging 1.9-3.1 h.
利用全尺寸污水污泥堆肥设施获得的数据，本文研究了环境空气温度对不同污水污泥与回收堆肥与膨胀剂体积比下堆肥温度的影响。实验研究了两种体积比，即1:0:1和3:1:2。结果表明，堆肥温度受环境空气温度影响，且在堆肥升温过程中影响更为显著：当环境空气温度变化13℃时，堆肥温度变化2.4 - 6.5℃。另一方面，在堆肥高温和/或降温过程中影响不显著：当环境空气温度变化8 - 15℃时，堆肥温度变化0.75 - 1.3℃。堆肥温度对环境空气温度的响应存在滞后效应。当堆体通风能力良好时（体积比为1:0:1），滞后时间较短，为1.1 - 1.2小时。相反，当添加的膨胀剂比例较低，因此基质孔隙率较小（体积比为3:1:2）时，滞后时间较长；为1.9 - 3.1小时。
