炼油污水亚硝酸型与硝酸型脱氮的比较研究

RESEARCH ON THE AMMONIA NITROGEN REMOVAL FROM PETROCHEMICAL WASTEWATER THROUGH NITRITE REACTION AND NITRIFICATION REACTION

对比研究了低碳氮比的高浓度氨氮炼油污水采用亚硝酸型和硝酸型脱氮的效果。研究结果表明,亚硝酸型脱氮可明显提高总氮去除效率,氨氮和硝态氮负荷可提高近一倍。水质的pH值和氨氮浓度等因素对脱氮类型具有重要影响。通过对亚硝酸型和硝酸型生物脱氮的效果进行分析比较,确定了两种脱氮运行条件的控制方法。

Due to the low ratio of carbon to nitrogen,the removal ratio of ammonia nitrogen is low in the process of wastewater biochemical treatment.This article studies the ammonia nitrogen removal ratio from high ammonia nitrogen content wastewater through nitrite reaction and nitrification reaction.The results show that the ammonia nitrogen removal ratio through nitrite reaction is obviously higher than that through nitrification reaction.Besides,the pH value and ammonia nitrogen concentration of wastewater affect the ammonia nitrogen removal ratio.Through the contrastive analysis on the effects of ammonia nitrogen removal through nitrite reaction and nitrification reaction,the paper determines the actual effects and operating conditions of nitrosofication and nitrification pathways to remove ammonia nitrogen.