Method Of Magnetic-assistant Catalytically Oxidize Applied To Treat Organic Wastewater

The wastewater is treated by the common method of catalytically oxidize, for example the system of H₂O₂/C,Fenton,ClO₂/ash, when the optimal reaction conditions are decided the result shows that the method can deal with some organic wastewater in the extend .The magnetic field like the electric current, light shine, radiates, is a kind of physics factor. The electric current, light shine, radiates play an important physics factor's function in chemical reaction, so magnetic field also should affect chemical reaction. People discovered that the magnetic field responds obviously to the free radicals many years ago. Many catalytically oxidize processes are based on free radicals responds, therefore we speculate the system of magnetic field/ catalyst oxidize may increases the decomposition velocity of pollutant, the magnetic field is added to the classic system of catalytically oxidize and handle the imitated organism waste water. The result show that when the o-nitro-phenol wastewater is treatment with catalytic oxidation by magnetization NaClO, its removed rate of COD_Cr raise 1. 4%; when the reactive blue dye simulated wastewater is treated by magnetic-assisted micro-ozone oxidation system, the results showed that the removed rate of chromaticity achieved 97.8% after oxidizing 30min without magnetic field. Comparatively, the removed rate of chromaticity achieved 97.8% after oxidizing 24min under the existence of magnetic field; when the surfactant simulative wastewater is treated by the magnetic-assistant Fenton reagent system , the results shows that the removed rate of CODcr was 0.4% under the existence of magnetic field better than without the existence of magnetic field; when the reactive red dye simulated wastewater is treated by the magnetic-assisted catalytically oxidation system, the results shows that the removed rate of COD_Cr reached 62.5% under pH value being 3, the dosage of FeSO₄·7H₂O being 500mg, the volume of H₂O₂ being 0.4mL, reaction time being 20min.Comparatively, intensity of magnetic field was 427.8mT and magnetic-assisted reaction time was 20min, the removed rate of CODcr was 8.3% better than without magnetic field. From the result, we speculate that magnetic field increase · OH reactive velocity of the...