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The treatment of high concentration organic wastewater by microwave Fenton process was studied in this paper. The input volume of Fenton reagent, microwave power, reaction time, initial pH value is investigated to study the impact of the effect of the high concentration organic wastewater treatment. The optimum condition of Microwave-Fenton oxidation is: the pH reaching 3, Fenton reagent composition...
Chemical oxygen demand (COD) has been the crucially problematic parameters in refinery wastewater treatment. This study was conducted to investigate COD removal in refinery wastewater with Fenton process. The effects of pH value, H2O2 dosage, the mole ratio of Fe2+ to H2O2, oxidation time and oxidation temperature on COD removal were discussed. The results showed that COD removal efficiency first...
The mineral processing wastewater of sulfide ore is easily cause environment pollution, because it contains xanthate. This thesis applied the combined technology of ultrasound and Fenton reagent to deal with the artificial and actual mineral processing wastewater, in terms of the effects of pH value, H2O2 and Fe2+ concentration on the removal efficiency of xanthate. The results showed that combined...
In this paper, advanced oxidation process utilizing Fenton's reagent was investigated for degradation of the C.I. Acid Blue 9 from aqueous solution. Some important operation parameters, such as pH value of solutions, iron and hydrogen peroxide concentration, temperature and presence/absence of chloride ion, which effect on the decolorization of the C.I. Acid Blue 9 from aqueous solution by Fenton...
The synergetic action of UV-Fenton catalytic oxidation and nano-TiO2 photocatalysis to dye wastewater was researched by experiments. The impact of different concentrations and different structures to the dye wastewater treatment was analyzed. And the recovery test of TiO2 was made. The results showed that the performance of TiO2 photocatalysis was relatively stable, and TiO2 could be reused.
The study on further treatment of coal coking wastewater by ultrasound wave, Fenton's reagent and coagulation was carried out in this paper at the first time, Furthermore, this paper discussed the optimum cooperative reaction condition of their combined application and the influence trend of COD by the single factor. The results showed that the removal rates of COD had optimum values with the variation...
Landfill leachate pre-treatment was studied by Fenton reagent composed of FeSO4ldr7H2O and H2O2. The different effect factors of CODcr were studied, such as pH value, Fenton reagent under different dosages, the molar ratio of ferrous ion to H2O2 and reaction time. The results indicated: when the pH value was 3.0, the dosages of H2O2 was 0.25 mol, FeSO4ldr7H2O and H2O2 in the molar proportion was 10...
Even though iron salts are widely used in waterand wastewater treatment, many questionssurrounding the use of this element remain.Issues surrounding the impact of mixingconditions on floc structure and strength, theeffect of reduction of ferric iron species onanaerobic sludge properties (includingdewatering) and the possible options for choiceof ligand in the modified photo-Fenton processfor contaminant...
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