臭氧氧化技术除臭效果的研究

Study on the Effect of Odor Removal by Ozone

目的:利用臭氧对粪便处理车间的臭气物质进行氧化分解时,臭氧的除臭效果和臭氧的适宜浓度。方法:在对京东某粪便处理车间大规模现场测试(官能法,化学法)的基础上,确定粪便处理车间的恶臭污染源,计算出臭氧氧化法的除臭效率。结果:针对臭气成份与臭氧反应速度,绘制出了在粪便处理车间臭气浓度以及臭气主要成份硫化氢和氨随时间的衰减曲线;臭氧发生器启动后,臭气浓度迅速衰减,在第一个小时内臭气浓度衰减率为74%,硫化氢在第一个小时浓度衰减率为29%,第二个小时浓度衰减率为58.9%,氨2小时后总衰减率为56.8%;臭氧除臭时,粪便处理车间臭氧浓度应控制在0.03 ppm,此时臭气浓度为150,臭气强度为3级。结论:该项研究为臭氧除臭装置和粪便处理车间利用臭氧氧化法除臭提供了设计依据。

Objective： To assess the effect of odor removal by ozone and the suitable ozone concentration when it axidizes and decomposes odorants. Methods： To determine the source of order emissions in fecal treatment work-shops and to calculate the efficiency of order removal by ozone based on data acquired through comprehensive on-site measurements conducted in a fecal treatment workshop on the east side of Beijing. Results： Based on the reaction rate of odor elements and ozone, the time rate of the decline of odor concentration and ammonia and hydrogen sulfide are presented. The odor concentration declined rapidly after the ozonizer was started. Within the first hour the odor concentration dropped by 74% and hydrogen sulfide dropped by 29% within the first hour and 58.9% within the second hour; the total attenuation rate of ammonia reached 56.8% after two hours. The ozone concentration should be balanced at 0.03ppm when odor removal by ozone is used in fecal treatment workshops, at which state the odor concen- tration would be 150; the odor intensity, 3 grade. Conclusion： The study offers basic insights into the mechanisms of ozone odor removal on which the design of odor removal device and the adoption of ozone odor removal by fecal treatment workshops could be based.