深紫外發光二極體陣列排列對水殺菌反應器之研究

Investigation of Batch Water Disinfection using Deep Ultraviolet Light-Emitting Diode Array

葉宗儒(Zong-Ru Ye)

指導教授 ： 廖川傑 ； 王建評

中原大學/工學院/機械工程研究所/碩士(2019年)

https://doi.org/10.6840/cycu201900699

摘要

目錄
摘要 I
Abstract II
致謝 III
目錄 IV
圖目錄 V
符號表 VII
第一章 緒論 1
1.1 發光二極體簡介 1
1.2 水殺菌簡介 2
1.3 文獻探討 3
1.4 研究目的 6
第二章 理論基礎、研究方法 7
2.1 照度計量測系統原理 7
2.2 Tracepro輻照度模擬 8
2.3 紫外線滅活實驗 10
2.3.1 紫外線殺菌原理 10
2.3.2 菌液製作 10
2.3.3 分光光度計測量菌液濃度 11
2.3.4 紫外線殺菌實驗 14
2.4 紫外線滅活模擬 15
第三章 結果與討論 17
3.1 輻照度量測 17
3.2 輻照度模擬 20
3.3 紫外線滅活實驗、模擬 30
第四章 結論與未來展望 41
4.1 結論 41
4.2 未來展望 42
參考文獻 43

關鍵字

深紫外線發光二極體 ； 輻照度 ； 陣列 ； 滅活

並列摘要

The present study investigates inactivation effect of Escherichia coli K12 IFO 3301 by using homemade UVC LED module. UVC LED module is made by plural chips. The variations of average irradiation and irradiation distribution at different LED chips spacing distance and distance between sample light source are analyzed. Average irradiation and irradiation distribution are calculated by TracePro simulation and UVC light meter experiment. Residual Escherichia coli number after UV exposure is gained by spread plates. Effect of light source design on E. coli inactivation is analyzed in this study.
The inactivation test of this study explores four different LED chips spacing distance of 5mm, 15mm, 25mm, 35mm and eight different distance between sample light source,15mm, 20mm, 25mm, 30mm, 35mm, 45mm, 55mm, 65mm.
After inactivation test, average irradiation decreases because incident light reduces, when distance between sample and light source increases. Irradiation Uniformity of sample surface decreases because light sources become parallel light.
After 60s UVC test, log inactivation first increases then decreases when distance between sample light source increases under same operating current and LED chips spacing distance. Log inactivation increases when LED chips spacing distance increases and is lower than 35mm under same operating current and distance between sample light source. Log inactivation decreases when LED chips spacing distance increases and is higher than 35mm. Because incident light becomes parallel light, and LED chips spacing distance increasing causes incident light and log inactivation reducing. Average irradiation and irradiation uniformity should be taken into account when designing disinfection reactor.

並列關鍵字

UVC LED ； Irradiation ； Array ； Inactivation

參考文獻

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4. L. Kemeny, Z. Csoma, E. Bagdi, A. H. Banham, L. Krena´cs, A. Koreck, ” Targeted phototherapy of plaque-type psoriasis using ultraviolet B–light-emitting diodes” British Journal of Dermatology, Volume 163, Pages 167–173, July 2010

5. M. Gouma, E. Gayán, J. Raso, S. Condón, I. Álvarez, “Inactivation of spoilage yeasts in apple juice by UV–C light and in combination with mild heat” Innovative Food Science and Emerging Technologies, Volume 32, Pages 146-155, December 2015