| 新型硫铁复合填料强化再生水深度脱氮除磷 |
| 摘要点击 3348 全文点击 996 投稿时间：2017-03-28 修订日期：2017-05-02 |
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| 中文关键词 新型复合填料 硫磺 海绵铁 复合反硝化 化学除磷 克隆文库 |
| 英文关键词 novel composite filler sulfur sponge iron composite denitrification chemical phosphorus removal gene clone library |
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| 中文摘要 |
| 为强化再生水深度脱氮除磷的能力，利用硫磺粉、海绵铁粉等制备出一种新型复合填料，并在不同HRT和C/N条件下将其与同种物质组成的颗粒混合填料进行对比实验.最后通过高通量测序技术对两填料表面的微生物种群结构进行了研究.结果表明，在不同条件下新型填料的脱氮除磷能力均优于颗粒混合填料；当HRT=4 h、C/N=1时，新型填料的总氮、总磷去除率均分别比颗粒填料高出30%以上.根据高通量测序结果，两反应器内的反硝化体系均由硫自养反硝化种群和异养反硝化种群构成，且新型填料系统内的硫自养反硝化菌群所占比例更大，两反应器内的优势种属分别为Sulfurimonas和Acinetobacter. |
| 英文摘要 |
| In order to improve the ability of denitrification and phosphorus removal from reclaimed water, a novel composite filler was prepared using sulfur powder and sponge iron powder, and a comparative experiment was constructed at different HRT(hydraulic retention time) and C/N(carbon-nitrogen ratio) conditions between the novel filler and the composite filler. The results showed that the efficiency of nitrogen and phosphorus removal on the novel filler was higher than that on the grain filler (more than 30% higher at HRT=4 h and C/N=1). Moreover, based on the 16S rRNA gene clone library, the denitrification system in the two reactors included sulfur autotrophic denitrification bacteria and heterotrophic denitrification bacteria, while the proportion of sulfur autotrophic denitrification bacteria in the novel filler system was higher. The dominant bacteria in the novel filler and composite filler were Sulfurimonas and Acinetobacter, respectively. |
