Zhou Yan-Qing, Hao Rui-Xia, Liu Si-Yuan, Wang Li-Sha
Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China.
Huan Jing Ke Xue. 2017 Oct 8;38(10):4309-4315. doi: 10.13227/j.hjkx.201703241.
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 and , respectively.
为提高再生水的脱氮除磷能力，采用硫磺粉和海绵铁粉制备了一种新型复合填料，并在不同水力停留时间（HRT）和碳氮比（C/N）条件下，对新型填料与复合填料进行了对比实验。结果表明，新型填料的氮磷去除效率高于颗粒填料（在HRT = 4 h和C/N = 1时高出30%以上）。此外，基于16S rRNA基因克隆文库，两个反应器中的反硝化系统均包括硫自养反硝化菌和异养反硝化菌，而新型填料系统中硫自养反硝化菌的比例更高。新型填料和复合填料中的优势菌分别为 和 。
