| Summary: | 碩士 === 國立成功大學 === 化學工程學系 === 103 === Wastewaters containing imidacloprid (IMI), a widely used pesticide, is confirmed to potentially impact the bee populations. This study used two photochemical oxidation processes, including UV-H2O2, and UV-S2O82-, to treat the synthetic wastewater which is composed of IMI, dimethylacetamide, N-methyl-2-pyrrolidone, and methanol (TOC0 = 497 ppm). UV irradiation (254nm, 6.4 mW/cm2) was used to activate H2O2 and S2O82- to produce hydroxyl and sulfate radicals. 58% and 97% of TOC were reduced by UV-H2O2 and UV-S2O82- (in 4 hour), respectively, using 150 mM oxidant. The inorganic nitrogen such as NH4+ and NO3- were released during the process. In some cases, the organic nitrogenous species were supposed to exist in the effluent based on unbalance inorganic nitrogen production, even though removals of TOC were high.
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