| 采用高效菌提高普通活性污泥系统抗2,4-DCP负荷冲击能力 |
| 摘要点击 1363 全文点击 1656 投稿时间：2003-09-14 修订日期：2003-12-29 |
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| 中文关键词 生物强化 高效菌 负荷冲击 2,4-二氯酚 |
| 英文关键词 bioaugmentation special culture shock loading 2,4-dichlorophenol |
| 作者 | 单位 | | 全向春 | 北京师范大学环境学院环境模拟与污染控制国家重点联合实验室,北京,100875 | | 施汉昌 | 清华大学环境科学与工程系环境模拟与污染控制国家重点联合实验室,北京,100084 | | 吕萍萍 | 清华大学环境科学与工程系环境模拟与污染控制国家重点联合实验室,北京,100084 | | 王建龙 | 清华大学环境科学与工程系环境模拟与污染控制国家重点联合实验室,北京,100084 | | 钱易 | 清华大学环境科学与工程系环境模拟与污染控制国家重点联合实验室,北京,100084 |
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| 中文摘要 |
| 研究了用于处理生活污水的普通活性污泥反应器(CAS)受到2,4-二氯酚(2,4-DCP)间歇性负荷冲击时,投加高效菌的生物强化系统和对照系统对污染物的响应及系统稳定性,并考察了长期运行过程中强化系统对目标污染物去除能力的变化.结果表明,投加5%和15% 2,4-DCP复合高效菌的强化CAS系统,其对目标污染物的降解能力及抗负荷冲击能力得到显著提高.当系统受到间歇性2,4-DCP负荷冲击[110.37～171.60 mg/(L·d)]时,对于单次投菌后前30日内发生的间歇性负荷冲击,强化系统有效保持了对目标污染物的强化效果;在无2,4-DCP存在的情况下连续运行70d,当系统再次受到2,4-DCP负荷冲击时,强化系统的强化效果与前几次相比已明显下降,不能够快速有效去除污染物并维持系统稳定,因此有必要再次投加高效菌. |
| 英文摘要 |
| In this study, conventional activated sludge (CAS) systems, which were generally used to treat municipal wastewater, were modeled to receive intermittent 2,4-dichlorophenol (2,4-DCP) shock loadings. The response and stability of the CAS system augmented with special culture and the non-bioaugmented control CAS system under shock loading conditions were compared. The capability of the bioaugmented CAS systems to degrade 2,4-DCP under long-term continuous operation was investigated. Results showed that for the CAS systems with 5% and 15% special culture addition, their degradation of the target pollutants and resistance against shock loadings was enhanced significantly. When 2,4-DCP shock loading occurred within the first 30 days after single inoculation, the bioaugmented CAS systems maintained high degradation ability to the target pollutants. After 70 days continuous operation without 2,4-DCP in feed, when the CAS systems challenged 2,4-DCP again, the effect of bioaugmentation was greatly reduced and the CAS system failed to remove the pollutants and maintain the system stability effectively. Therefore, re-supplementation was needed for further treatment of 2,4-DCP. |
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