摘要
工业企业生成的大量废气、废水对我国环境造成了严重污染,缓解方式为采用高效空气净化装置和污水处理装置。该文针对低温等离子体易产生副产物氮氧化物和臭氧,光催化对可见光响应弱、光量子利用效率低的缺点,设计了一种高效能的空气净化装置,以达到减少副产物排放,提高净化能效的目的。通过实验研究了单独低温等离子体、单独光催化及2种技术协同情况下对污染物甲醛去除效果的影响,并对比了三者作用时的降解率。实验结果表明,风管为九宫格形与风管为普通方形相比,有利于提高光催化去除甲醛的效率;2种技术协同后可有效提高污染物甲醛的去除效果,同时减少氮氧化物的排放,提高净化能效,并可将臭氧变废为宝用以工业废水处理。
A large number of stack gas and wastewater produced by industrial enterprises have caused serious pollution to our environment. The way to alleviate the pollution is to use high efficiency air purification equipment and sewage-treatment plant. This paper aimed at designing a high-efficiency air purifying device to solve the shortcomings on non-thermal plasma easily producing by-products such as nitrogen oxides and ozone,photocatalysis reflecting weakly to visible light and inefficient use of light quantum,to achieve the goal of reducing emissions and improving energy efficiency. In addition,through the experimental test,this paper studies the effect of formaldehyde removal under the conditions of separate non-thermal plasma,separate photocatalysis and the two kinds of technology cooperation and compared the degradation rate under the three conditions. The experimental results show that comparing with the ordinary square air duct,Sudoku air duct is beneficial to improving the efficiency of the decomposition of formaldehyde. And the two kinds of collaborative technology can effectively improve the removal efficiency of formaldehyde and reduce the emission of nitrogen oxides,and improve the efficiency of the purification. Meanwhile,turning ozone into treasure used in industrial wastewater treatment can reduce the production of ozone and energy consumption from the ozone generation facilities.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2017年第10期144-150,共7页
Environmental Science & Technology
基金
中央高校基本科研业务费科研专项面上项目(106112014CDJZR210006)
重庆市研究生科研创新项目(CYS16042)
重庆市基础与前沿研究计划一般项目(CSTC2014jcyj A90018)
中国中冶重大科技专项项目(0012012006)
关键词
低温等离子体
光催化
空气净化
九宫格风道
工业废水
non-thermal plasma
photocatalysis
air purification
Sudoku air duct
industrial wastewater
