Yamamoto Taichi, Takaki Keita, Koyama Toichiro, Furukawa Kenji
Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan.
Bioresour Technol. 2008 Sep;99(14):6419-25. doi: 10.1016/j.biortech.2007.11.052. Epub 2007 Dec 31.
Partial nitritation using inhibition of free ammonia and free nitric acid is an effective technique for the treatment of high concentrations of ammonium in wastewaters. This technique was applied to the digester liquor of swine wastewater and the stability of its long-term operation was investigated. Partial nitritation was successfully maintained at a nitrogen loading rate (NLR) of 1.0 kg N m(-3)d(-1) for 120 days without acclimatization of nitrite oxidizing bacteria (NOB) to the inhibitory compounds (free ammonia and free nitric acid). The conversion efficiencies of NH(4)-N to NO(2)-N and to NO(3)-N were determined to be around 58% and <5%, respectively. After the establishment of partial nitritation, the influence of swine wastewater on the Anammox reaction was examined using continuous flow treatment experiments. Consistent nitrogen removal was achieved for 70 days at a nitrogen removal rate (NRR) of 0.22 kg N m(-3)d(-1) and the color of Anammox bacteria changed from red to greyish black. The NO(2)-N consumption and the NO(3)-N production increased concurrently and the Anammox reaction ratio was estimated to be 1:1.67:0.53, which is different from that reported previously (1:1.32:0.26).
通过抑制游离氨和游离硝酸进行部分亚硝化是处理高浓度氨氮废水的有效技术。该技术应用于猪废水消化液，并研究了其长期运行的稳定性。在不使亚硝酸盐氧化细菌（NOB）适应抑制性化合物（游离氨和游离硝酸）的情况下，部分亚硝化在1.0 kg N m(-3)d(-1)的氮负荷率（NLR）下成功维持了120天。NH(4)-N转化为NO(2)-N和NO(3)-N的转化效率分别确定为约58%和<5%。在建立部分亚硝化后，通过连续流处理实验研究了猪废水对厌氧氨氧化反应的影响。在0.22 kg N m(-3)d(-1)的氮去除率（NRR）下，连续70天实现了稳定的氮去除，厌氧氨氧化细菌的颜色从红色变为灰黑色。NO(2)-N消耗和NO(3)-N产生同时增加，厌氧氨氧化反应比估计为1:1.67:0.53，这与先前报道的（1:1.32:0.26）不同。
