光催化磁化学氧化在水处理中应用基础研究-市政工程专业论文.docxVIP

Ab Abstract Ⅲ Ⅲ THE BASIC RESEARCH OF PHOTOCATALYTIC MAGNETIC CHEMICAL OXIDATION IN WATER TREATMENT ABSTRACE This paper takes nano- TiO2 as catalyst, 265nm wavelength UV lamp as a light source, study on several typical water photocatalytic treatment, and then use H2O2 and magnetic field collaborative photocatalytic to treatment of waste water. Use the method to deal with Microcystis wastewater, we fiound that it had a better treatment effect under 265nm wavelength UV with nano-TiO2 catalysis. As 100mL simulated wastewater the wet weight of it was approximately 1.75g / L, the amount of TiO 2 10 mg / L, UV intensity 0.5mW/cm2, the removal rate of microcystin is more than 90% after 50min. The catalytic oxidation algaecide has a good effect with H2O2 synergistic, and the residual effect is significant, which can control Microcystis blooms of eutrophic water effectively. During H2O2 collaborative nano-TiO2 photocatalytic oxidation of microcystin in water, UV intensity and the concentration of H2O2 are the main influencing factors. reaction time 30min the removal rate of microcystin can reach more than 96% when UV intensity is 0.5mW/cm2 and H2O2 concentration of 20 mg/L. Besides the energy consumption is the most economical. Dealing with the aniline wastewater we found that, the optimal reaction conditions are as follows. As 100mL simulated wastewater, the initial concentration of the aniline was 10 mg / L, nano- TiO2 added amount of 100 mg / L, waste water pH 7.5, photocatalyticreaction time 60 min. 20 mg / L H2O2 synergistic the TiO2 photocatalytic handling aniline wastewater, after 24 min photocatalytic reaction, the aniline removal rate is 99%，which increase the rate of reaction. The research of dye wastewater showed that: 100mL simulated wastewater, the concentration of dye about 100mg / L, the water samples containing 150mg catalyst per 1L, pH = 6.5, the effect is best, the t0.5 is 59.137 when the HYPERLINK /dict_result.aspx?searchword=%e7%b4%ab%e5%a4%96%e7