Technical Progress of Fluidized Bed Fenton Process in Industrial Water Treatment
The main disadvantage of traditional Fenton process is that it may produce large amounts of sludge and limits the application of water treatment.Fluidized-bed Fenton process is an advanced oxidation technology which combines Fenton process and carrier crystallization.Fluidized-bed Fenton can not only enhance the effect of catalytic oxidation,but also reduce the iron sludge.In this review,the basic principle of fluidized bed Fenton is comprehensively introduced from four aspects:homogeneous reaction,heterogeneous reaction,carrier crystallization and technical mechanism.Secondly,the key influencing factor of fluidized-bed Fenton process in wastewater treatment are systematically introduced from the aspects of carrier characteristics,reaction conditions(Fenton reagent,pH value,bed expansion rate and water matrices)and reactor structure.Then,the engineering application of fluidized-bed Fenton process in recalcitrant industrial wastewater treatment in recent years are critically reviewed.Finally,the optimization of fluidized-bed Fenton process is expandingly expatiated from the perspective of high efficiency active carrier and coupling technology(photocatalysis and membrane biological treatment),and propose feasible survey direction and interest on future research.
fluidized-bedindustrial water treatmentcrystallizationcarrierinfluencing factorengineering applicationoptimization
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