| 低温下活性污泥膨胀的微生物群落结构研究 |
| 摘要点击 3853 全文点击 1438 投稿时间：2015-09-08 修订日期：2015-10-20 |
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| 中文关键词 低温 污泥膨胀 高通量测序 微生物群落 丝状菌 |
| 英文关键词 low temperature activated sludge bulking high-throughput sequencing microbial community structure filamentous bacteria |
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| 中文摘要 |
| 采用水质参数指标测定和高通量测序技术,探讨了郑州某污水处理厂冬季间歇性污泥膨胀机制. 结果表明该厂活性污泥的污泥容积指数(SVI值)的变化与季节温度变化有显著的负相关性,1~4月及12月易发生污泥膨胀,但是不影响出水水质. 高通量测序技术分析发现污泥膨胀月份泥样的微生物群落结构要显著不同于未膨胀月份. 该厂发生丝状菌污泥膨胀的优势丝状菌为腐螺旋菌科Saprospiraceae和黄杆菌科Flavobacterium. 因此,低温导致活性污泥微生物群落结构变化是引起该厂活性污泥膨胀的原因. |
| 英文摘要 |
| The mechanism of activated sludge bulking in Zhengzhou wastewater treatment plant was studied by measurement of water quality parameters and high-throughput sequencing technology. The change of SVI value was significantly negatively correlated with the seasonal temperature variation, and sludge bulking was easy to occur during December to the next April, but the water quality was not affected. The result verified by high-throughput sequencing technology analysis showed that the microbial community structure of bulking sludge was significantly different from that of the non-bulking one. The dominant filamentous bacteria in the bulking sludge in this plant were Saprospiraceae and Flavobacterium. Therefore, the activated sludge bulking in this wastewater treatment plant was caused by the propagation of filamentous bacteria at low temperature. |
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