The influence of starvation phase on the properties and the development of aerobic granules
发布时间：2024-08-09
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- 所属单位：
- 环境与市政工程学院
- 发表刊物：
- Enzyme and Microbial Technology
- 关键字：
- 中文关键字：好氧颗粒; 胞外多聚物; 活性污泥，英文关键字：Aerobic granules; Extra-cellular polymer substance
- 摘要：
- The current study was to evaluate the influence of starvation phase on surface negative charge, relative hydrophobicity, extra-cellular polymer substances (EPS) and the formation mechanism of aerobic granules. Granules with encouraging settling properties occurred in the reactor about 7 days after the inoculation. The surface negative charge decreased from 0.203 to 0.023 meq g VSS?1 and the relative hydrophobicity increased from 28.8 to 60.3% during the granulation period. Concentrations of protein and carbohydrate decreased from 18.0 to 7.1 and 7.0 to 2.9 mg g VSS?1, respectively in the first period. And from day 13, those values were observed in the range of 5.8–8.6 and 2.9–5.6 mg g VSS?1, respectively. The EPS especially protein concentrations well correlated with surface charge and relatively hydrophobicity. It was concluded that a reasonable amount of EPS should be controlled to form and maintain aerobic granules. It was proposed that aerobic granulation was initiated by starvation phase and then enhanced by anaerobic metabolism.
- 备注：
- 李志华
- 合写作者：
- Kuba,T.,KusudaT
- 第一作者：
- 李志华
- 论文类型：
- 期刊论文
- 卷号：
- 卷：38
- 期号：
- 期：5
- 页面范围：
- 页：670-674
- 是否译文：
- 否
- 发表时间：
- 2006-03-01