MBBR反应器处理制革废水的氨氮去除机理

通过移动床生物膜反应器试验装置，研究该工艺对综合制革废水中氨氮的处理效果及去除机理。试验结果表明：氨氮去除率随填着填料填充率增加而降低。当填料填充率为40%，填井表面氨氮承受负荷为0．1—0．8g/（m^2·d）时，氨氮去除率为85％-95％，出水氨氮浓度为35～75mg／l。单靠降低负荷已无法进一步改善出水水质，但通过补充进水碱度、降低进水碳氮比、提高水温等一系列措施，可使反应器出水氨氮由降低至9-14mg／l.

Removal Mechanism in Moving Bed Biofilm Reactor for Tannery Wastewater Ammonia Treatment

The Moving Bed Biofihn Reactor experimental equipment is used to research on the ammonia treatment effect of tannery wastewater. The results show that the removal rates of NH3-N is reduced when the suspend packing stuffing rate is increased .When the suspend pack- -ing stuffing rate is 40% and apparent loading index of filling material is 0.1-0.8g/（m^2 .d）, the removal rates of NH3-N is 85%-95%, the NH3-N concentration of effluent is 35-75mg/l and can be nolonger increased simply by corresponding apparent loading index of filling material increa- -sing. But the NH3-N concentration of effluent can be reduced to 9-14mg/l by such measures as alkalinity supplement, Carbon-nitrogen ratio rducing and water temperature increasing.