硝酸盐负荷对新鲜垃圾稳定化的影响

Influence of Nitrate Loading on Stabilization of Fresh Refuse

基于厌氧生物反应器填埋技术,回灌不同浓度的硝化渗滤液,通过观察渗滤液水质变化和产气量,分析对新鲜垃圾稳定化进程的影响。结果表明,硝酸盐负荷对新鲜垃圾稳定化进程有一定的抑制作用。无硝酸盐负荷时,垃圾填埋柱渗滤液COD和氨氮浓度更低。回灌的硝酸盐负荷会抑制甲烷的产生,当硝酸盐负荷为5,15,25,35,50 mg/(kg·d)时,均未检出甲烷产生。

Based on the anaerobic bioreactor landfill technology,the nitrification leachate at different concentrations was recharged,and the effect of the leachate water quality change and gas production was investigated. The results showed that fresh refuse on stabilization was reduced by nitrate loading in simulative leachate recirculation. At the end of this experiment,the COD concentration and ammonia nitrogen concentration of refuse leachate in no nitrate loading is lower. The nitrate loading in the recirculation inhibited methane production. When the nitrate loading was 5,15,25,35 and 50 mg/（ kg·d）,no methane production was detected.