Using NaClO oxidation to degrade ammonia nitrogen in high salinity wastewater, the influencing factors and kinetics of the reaction were studied. The results showed that, the degradation process of ammonia ni-trogen by NaClO followed pseudo-first-order kinetics model, and the influencing factors included dosage of NaClO, initial concentration of ammonia nitrogen, salinity, temperature and so on. When the NaClO dosage was 0.6%, the reaction rate was as high as 0.01575 min-1. The higher the initial concentration of ammonia nitrogen was, the worse the effect of oxidation reaction would be. When the initial mass concentration was not above 45 mg/L;with the increasing of initial concentration, the influence of it on oxidation rate constant increased. Low salinity had little influence on ammonia nitrogen oxidation, however, when the salinity was over 2.0%, the inhibiting effect of it on ammonia nitrogen oxidation would be strengthened, and the reaction rate constant decreased distinctly. In-creasing reaction temperature was beneficial to ammonia nitrogen oxidation and degradation. During the process of the temperature increased from 10 ℃ to 35℃, the reaction rate constant increased from 0.00188 to 0.01043 min-1.%采用NaClO氧化降解高盐废水中的氨氮,对其影响因素及动力学进行研究.结果表明:NaClO对氨氮的氧化降解过程符合伪一级反应动力学模型,影响其降解效果的因素有NaClO的投加量、 氨氮的初始浓度、 盐分、 温度等.当NaClO投加量为0.6%时,反应速率常数高达0.01575 min-1.氨氮初始浓度越大,氧化反应效果越差,且初始质量浓度不超过45 mg/L时,随着初始浓度的增加,其对氧化反应速率常数的影响增大.低浓度盐分对氨氮氧化基本无影响,但超过2.0%时,随着盐分的增加,其对氨氮氧化效果的抑制作用增强,反应速率常数明显降低.提高反应温度,有利于氨氮的氧化降解,当温度从10℃增加至35℃的过程中,反应速率常数从0.00188 min-1增加至0.01043 min-1.
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