| 应用解蛋白菌生物预水解剩余污泥 |
| 摘要点击 2196 全文点击 750 投稿时间：2016-04-23 修订日期：2016-06-13 |
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| 中文关键词 生物预水解 地衣芽孢杆菌 蛋白酶 消化性能 脱水性能 液化 |
| 英文关键词 biological pre-treatment Bacillus licheniformis protease digestibility dewaterability liquefaction |
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| 中文摘要 |
| 本文比较了解蛋白菌——地衣芽孢杆菌在不同接种比（0.17%、0.66%、1.16%和1.65%，以TS比计）条件下，生物菌剂预水解对剩余污泥液化效果和脱水性能的影响规律.结果表明，以地衣芽孢杆菌为接种物进行生物预处理，可以促进污泥胞内物质的溶出，同时促进污泥中蛋白质的溶出和降解，但污泥的脱水性能会有所劣化.发现地衣芽孢杆菌的接种比为1.16%时，溶解性有机物的累积溶出量达到最大值，而继续提高接种比并不会增加溶解性有机物的累积溶出量；同时，在该接种比下，经过129 h的生物预处理，蛋白质与挥发性固体的比值达到最低，为初始值的72%，表明蛋白质的降解量达到最大值.但经过129 h生物预处理，污泥的模化CST值上升为初始值的2倍左右，经过生物预处理后污泥的脱水性能劣化. |
| 英文摘要 |
| The performances of biological pre-treatment were compared at different inoculation ratios of Bacillus licheniformis (0.17%, 0.66%, 1.16% and 1.65%, TS/TS), in order to evaluate the influence on sludge liquefaction and its dewaterability. The analysis showed that biological pre-treatment by inoculating Bacillus licheniformis accelerated the dissolution of intracellular materials and increased the degradation of protein, but the sludge dewaterability deteriorated. When the inoculation ratio of Bacillus licheniformis was 1.16%, the cumulative effect of dissolved organic carbon reached its maximum. Keeping increasing the inoculation ratio would not result in any improvement. At an inoculation ratio of 1.16%, the quantity of protein per volatile solid reached the minimum, which was 72% of the initial value, after 129 hours of digestion, which reflected the maximal degradation rate of protein. But at same time, the value of CST of sludge doubled, which indicated the deterioration of sludge dewaterability. |
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