羟基对压载水中三态氮影响的实验研究

在强电离电场作用下，利用H2O和O2制成高浓度羟基溶液，处理压载水取得明显效果．针对处理后的水质问题，模拟低浓度羟基溶液处理船舶压载水过程，检测了其中三态氮的变化情况．实验结果显示，当羟基比值浓度达到0．68mg／L，亚硝酸盐含量降低了69％，氨氮含量也有所降低，硝酸盐的含量略微增加，并且在培养24h和48h后含量很稳定，表明了羟基溶液对压载水中的无机氮在三个价态上的分布更趋于无害，改善了水质，进而说明了羟基治理压载水的方法是可行的．

Effect of hydroxyl radical on three forms of nitrogen in ballast water

High concentration of hydroxyl radical is produced from H2O and O2 by the charge transfer in the strong electric field, by which the effect of treating ballast water is obvious. Dealing with the quality of treated ballast water, the experiment of hydroxyl upon it is done, measuring three forms of nitrogen. The results indicated that when the ratio concentration is up to 0.68 mg/L, the content of nitrite is decreased by 69%, and so was ammonia. The other way round the content of nitrate was increased little, and the cont- ent was stabile after 24 h and 48 h, indicating that the distributing of three forms of nitrogen was to innocuously, meanwhile to improve the quality of ballast water, so as to showed the method was feasible.