| 污水生物处理系统细菌衰减特征的实验研究 |
| 摘要点击 3885 全文点击 3225 投稿时间：2007-12-30 修订日期：2008-02-01 |
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| 中文关键词 污水生物处理 细胞衰减 细胞死亡 活性降低 LIVE/DEAD染色 |
| 英文关键词 biological wastewater treatment cell decay cell death activity decrease LIVE/DEAD dyeing |
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| 中文摘要 |
| 通过衰减速率测定实验和LIVE/DEAD细胞活性染色实验，分析了污水生物处理系统中细菌在好氧环境下的衰减状态.研究发现，细菌的衰减实质上是由生物量减少引起的数量衰减和由细胞活性降低引起的活性衰减两部分构成的.结果表明，硝化系统细菌在衰减过程中由细胞活性降低引起的衰减约占60%，由细胞死亡引起的衰减约占40%；而在异养系统中由活性降低引起的衰减和由细胞死亡引起的衰减分别为80%和20%. |
| 英文摘要 |
| The characteristics of cell decay in biological wastewater treatment systems were investigated under aerobic condition, by measuring the decay rate and by determining the death rate with LIVE/DEAD dyeing experiments. It was found that cell decay in biological wastewater treatment systems can be actually described as two parts: decay caused by cell death and decay derived from activity decrease. The experimental results revealed that 60% of cell decay in a nitrifying system was caused by activity decrease and 40% was caused by cell death. In a heterotrophic system, however, activity decrease was responsible for 80% of cell decay, and the other cell decay for 20% was caused by cell death. |
