| 辅料配比对污泥生物-物理联合干燥的影响 |
| 摘要点击 6431 全文点击 2818 投稿时间：2010-10-31 修订日期：2011-03-04 |
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| 中文关键词 污泥 微生物 含水率 回流污泥 干燥 |
| 英文关键词 sludge microorganism water content recycled sludge drying |
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| 中文摘要 |
| 利用自主研制的污泥生物-物理联合干燥反应系统研究了脱水污泥∶树皮∶回流污泥分别为7∶3∶0.5、 9∶3∶0.5和12∶3∶0.5时，污泥生物-物理联合干燥过程中温度、 含水率等参数的变化规律.结果表明，污泥温度随干燥时间延长先增大后减小，含水率在0～96 h逐渐降低，继续延长反应时间，则变化不明显.当脱水污泥∶树皮∶回流污泥为9∶3∶0.5时，污泥温度迅速升高，在48 h达到3组辅料配比最大值67℃，并在55℃以上保持72 h，而后迅速降低，经过168 h处理后含水率从74.1%降低到61.8%，获得水分去除率最大值43.5%.辅料配比对生物-物理干燥过程具有重要影响，通过向脱水污泥添加适宜配比的辅料，能改善堆体渗透性，有利于快速激发并维持微生物活性，提高干燥过程污泥温度，增强水分去除效果. |
| 英文摘要 |
| Parameters(temperature, water content and so on) in the process of sludge biophysical co-drying were studied in self-made biophysical co-drying reactor. The sludge∶tree bark∶recycled sludge was set as 7∶3∶0.5, 9∶3∶0.5, 12∶3∶0.5 respectively. The results suggested that sludge temperature first increased then decreased along with drying time, water content decreased in the first 96 h, then had no obvious variability. While sludge∶tree bark∶recycled sludge was 9∶3∶0.5, the temperature of sludge spiraling, received to max 67℃ at 48 h under three different accessories mixture ratio, and was kept for 72 h above 55℃, then spiraling, the final water content of sludge decreased from 74.1% to 61.8%, received the optimal water content removing rate 43.5%. Accessories mixing ratio had important influence on the process of sludge biophysical co-drying, sludge with proper mixing ratio can modify the structure of sludge, improve sludge permeability, arouse and keep microorganic activity, which will enhance sludge temperature and strengthen water content removal rate. |
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