Shao Liu, Xu Zu-Xin, Jin Wei, Yin Hai-Long, Zhu Bai-Rong
College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
Huan Jing Ke Xue. 2009 May 15;30(5):1414-9.
In this research,agriculture waste-rice straw was investigated as the sole carbon source as well as biofilm carrier to remove nitrate from wastewater in up-flow laboratory reactors. The experimental results indicated that the startup of the system was quick and a high nitrate removal efficiency was observed. The accumulation of nitrite was not observed in this process. Moreover, high nitrate concentration in the influent had a significant effect on nitrate removal efficiency. The reactor was able to accommodate a wide range of pH (6.5-8.5) and DO (1.0-3.5 mg/L). A time-dependent decrease in nitrate removal efficiency was observed after 84 days of operation. The results showed that rice straw could be used as an economical and effective carbon source for denitrification.
在本研究中，农业废弃物稻草被用作唯一碳源以及生物膜载体，用于上流式实验室反应器中去除废水中的硝酸盐。实验结果表明，该系统启动迅速，硝酸盐去除效率高。在此过程中未观察到亚硝酸盐的积累。此外，进水的高硝酸盐浓度对硝酸盐去除效率有显著影响。该反应器能够适应较宽的pH范围（6.5 - 8.5）和溶解氧范围（1.0 - 3.5 mg/L）。运行84天后，观察到硝酸盐去除效率随时间下降。结果表明，稻草可作为一种经济有效的反硝化碳源。
