垃圾渗滤液处理反应器中好氧反硝化研究

Aerobic Denitrification in a Reactor for Landfill Leachate Treatment

为了探讨厌氧折流板-生物接触氧化工艺处理垃圾渗滤液好氧反应器的脱氮机理,采用反应器氮平衡的原理对脱氮问题进行了研究。研究结果表明:生物接触氧化反应器在进水pH=7.27、T=35℃和DO=0.5mg/L情况下发生了好氧反硝化,可用微环境理论来解释这一现象的发生;本试验生物接触氧化反应器中DO浓度,pH值,温度和泥龄为好氧反硝化的发生创造了适宜的条件。

Based on the theory of nitrogen equilibrium, this paper investigated into denitrification process of leachate in the baffled anaerobic/aerobic bio-contact oxidation reactor. The study found that aerobic denitrification took place in the reactor under a certain condition with regard to pH of influence as well as temperature and DO within the reactor, and this can be explained by micro-environment mechanism.