摘要
生物反应器填埋场是一种新型的垃圾卫生填埋场,可以加速填埋场的稳定及甲烷的产生。通过模拟试验探讨了加装了活性炭载体的生物反应器填埋场在不同操作条件下的产气情况及COD,pH值、挥发性脂肪酸的变化趋势。试验证明添加活性炭做载体的反应器不仅有助于垃圾降解及渗滤液中CODCr浓度的降低,而且填埋气中甲烷含量也较高;但是简单的两相型反应器却不利于甲烷气体的产生和CODCr的降解,这是由于其水解速度慢,水解反应时间长引起的。
Bioreactor landfill is a new type of landfill, which can accelerate methane generation velocity and landfill stabilization. The generation of landfill gas and the change tendency of COD concentration as well as pH value and the change of VFA were discussed in this paper on base of the simulative experiment of bioreactor landfill with active-carbon carrier. The findings of the simulative experiments verified that it could not only facilitate the degradation of municipal solid waste and reduce CODcr concentration of leachate but also accelerate the generation of methane, Another conclusion was that the phenomenon appeared in bioreactor landfill with active-carbon carrier was worse in two-phase bioreactor because of the small hydrolyzing velocity.
