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The loading photocatalyst of TiO2/hollow pearls was prepared by sol-gel method and hollow pearls as carrier. The results indicate that the approach of TiO2 loading on hollow pearls is viable. The scanning electron microscope (SEM) images show that the coating layer is symmetrical on the hollow pearls; the UV-vis DRS shows that TiO2/hollow pearls has strong absorption in the UV range, and the absorption...
A kind of aspergillus niger which was isolated from soil was inoculated with Czapek-Dox liquid medium. Controling the experimental conditions, microbial flocculant MF-1 was prepared. MF-1 was adopted for the treatment of midcourse wastewater in papermaking factory. The influence to the flocculation effect of the dosage of flocculant, addition of metal ions, temperature, pH value, and flocculant stirring...
Acticarbon can absorb and gather -OH, -X etc. In phenol-containing wastewater these organic micropollutant (such as p-chlorophenol and o-chlorophenol) may affect COD value. After activation treatment, impregnated acticarbon with 6.0% Cu(NO3)2 solution, then put it into a drying oven of 270degC, copper will be reduced and thermosetting on its micro surface. Fixed bed was choosen as the equipment, absorption...
The degradation of an azo dye crystal violet by UV/Fenton oxidation process in the presence of heteropolyacid solution has been investigated. The degradation rate is strongly dependent on the pH, initial concentrations of the dye, Fe2+, H2O2 and phosphotungstic acid. The effect of these parameters has been studied and the optimal reacting conditions were experimentally determined. It was found to...
The photocatalyst of titanium dioxide/float pearls which had float performance was prepared by sol-gel method. The compound photocatalyst of phosphotungstic acid/titanium dioxide/float pearls which had high photocatalysis activity and floatability was prepared through surface modifying by dipping method. Scanning electron microscopy, X-ray diffraction and UV-Vis diffused reflectance spectroscopy analysis...
Aiming at handling oily waste water of steel-making enterprise, advective seperation of oil-coagulation-floatation-slag filtration technology routing was designed. Via static test, polyaluminium chloride etc. three kinds of coagulant were primarily selected. Coagulant for treating effect and rational operating conditions were determined. Optimized operating condition was: polyaluminium chloride dropping...
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