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Nanometer semiconductor TiO 2 is an efficient photocatalyst, has a strong oxidation ability, under ultraviolet irradiation, can be in the air and water, organic pollutants completely mineralized. TiO 2 photocatalytic oxidation technology is an emerging new water treatment method, has attracted great attention from researchers. In sewage treatment, air purification, solar energy utilization, antibacterial broad application prospects. If the TiO 2 doped with other elements, can improve its photocatalytic activity. Photoelectric catalysis is A voltage is applied, the optical excitation of the photo-generated electron mobility to the electrode, reducing the light-generated electron - hole recombination, and thereby significantly improve the catalytic activity of the photocatalyst to improve the technology. Artificial wetlands is booming in the 1970s-1980s, a new wastewater treatment technology. The design and construction of sewage treatment is carried out through a combination of physical, chemical, and biological role of natural ecosystems in the wetlands optimization to take advantage of the synergy of these three. In the research areas of the new generation of wastewater treatment technologies, ecological and physical methods that best meet the clean, low-cost and easy to operate direction of development, and shows a good prospect. This article explores the new technology the photoelectric the catalytic and artificial wetlands joint pesticide wastewater. First, using homemade Supported Nanoparticles of RuO 2 -TiO 2 photocatalyst pesticide plant wastewater photoelectric catalytic degradation experiments. The effects of the calcining time, amount of catalyst, light irradiation intensity, current density, wastewater initial pH of the reaction time of wastewater COD cr and color removal. The results show that the the homemade light the catalyst photoelectrocatalysis performance significantly, the the best photoelectric catalytic activity is the same degradation conditions, the same content Degussa P-25 TiO 2 1.38 times, Ru 0.3 Ti 0.7 O 2 1.81. Additionally, this photocatalyst to visible also a certain degree of response, especially in the removal of the chrominance, in the case of visible photoelectric than simply powering chroma removal rate of 34.8%. Photoelectrocatalysis degradation of pesticide wastewater by CaO the Phosphorus Removal adjust pH, diluted sewage into artificial wetland treatment after 5 days of the cycle process wastewater COD, color, total nitrogen, total phosphorus, orthophosphate, sulfide , suspended solids, have drastically reduced. Each reduced 97.2%, 99.2%, 96.7%, 99.4%, 69.7%, 100%, 73.5%. Handled by the combined process of photoelectrocatalysis and artificial wetlands wastewater, wastewater quality has been significantly improved, some water quality indicators have reached the GB8978-1996 \The results show that this new type of pesticide wastewater treatment process has a better application prospects.
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