Lim Eun-Tae, Jeong Gwi-Taek, Bhang Sung-Hun, Park Seok-Hwan, Park Don-Hee
Taerim Industry Co., Ltd., Jeonnam 520-340, South Korea.
Bioresour Technol. 2009 Dec;100(24):6149-54. doi: 10.1016/j.biortech.2009.06.072. Epub 2009 Aug 5.
In this study, pilot-scale experiments for the removal of nitrogen from sewage obtained from a county Y sewer system were performed using modified A(2)O processes. Using this approach, the total amount of nitrogen discharged during denitrification of the influent was average 38.6 mg/L and a level of average 10.8 mg/L was maintained throughout the denitrification process, which resulted in an average removal efficiency that was greater than 72%. The nitrogen components in the effluent water consisted of 22% ammonia nitrogen, 6% nitrite nitrogen and 72% nitrate nitrogen, reaching a nitrification efficiency of 94%. In conclusion, since these advanced treatment methods, which involve modified A(2)O processes, were successfully employed to remove nitrogen from sewage discharge, they hold promise for wide spread use by treatment plants.
在本研究中，采用改良A(2)O工艺对从Y县下水道系统获取的污水进行了中试规模的脱氮实验。采用这种方法，进水反硝化过程中排放的总氮量平均为38.6 mg/L，并且在整个反硝化过程中平均维持在10.8 mg/L的水平，这导致平均去除效率大于72%。出水的氮成分包括22%的氨氮、6%的亚硝酸盐氮和72%的硝酸盐氮，硝化效率达到94%。总之，由于这些涉及改良A(2)O工艺的先进处理方法成功用于去除污水排放中的氮，它们有望被污水处理厂广泛采用。
