| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Research Abstract |
In this study, we picked up NDMA as a new disinfection by-product. We examined the efficiency of ultraviolet treatment as the treatment method. The potential benefit of ultraviolet radiation of shorter wavelength than traditional was revelaed. I examined the lamp of 222nm shorter than 254nm conventional lamp. We investigated the effect of dissolved matters on the decomposition efficiency of NDMA by 222nm lamp. We obtained a result which lamp is more suitable for the degradation, depending on water conditions. Further, it was found that using the novel fluorescent excimer lamp to output a 220-254nm, NDMA was decomposed efficiently while suppressing the formation of nitrite as a by-products.
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