污染水体中三氮转化过程的模拟研究

以城市河涌污染水体为研究对象,通过模拟实验,研究了水体中的三氮转化规律及其与环境条件的关系。实验结果表明:室内和室外条件下氨氮转化十分迅速,亚硝酸盐氮和硝酸盐氮没有出现明显的累积现象;而在培养箱中,亚硝酸盐氮和硝酸盐氮则出现明显的累积现象。此外还研究了光合细菌对水体三氮转化的影响,发现其在室内和室外条件下有利于水体中的三氮转化,而对培养箱条件下的三氮转化起抑制作用。

SIMULATIVE EXPERIMENT ON NITROGEN TRANSLATION OF POLLUTED WATER

Taking the badly polluted municipal river as the studying targets,the relationship between nitrogen translation and environment conditions was obtained through this simulated experiment.The results showed that when the water samples were indoor or outside,the variability of ammonia concentration presented very quickly,but the concentrations of nitrite and nitrate were almost not variable.However,when the water samples were put into incubator,their corresponding concentrations were no longer increased or decreased evidently.The effect of photosynthetic bacteria on nitrogen translation also was studied at the same time.It showed that photosynthetic bacteria can accelerate nitrogen translation when the water samples were indoor or outside,but the velocity of nitrogen translation would slow down when the samples were put into incubator.