摘要
为了研究影响放电等离子体水处理中有物降解速率的因素,介绍了放电等离子体水处理技术中关于有机物降解速率的实验和理论研究进展,初步探讨了实验中各因素影响有机物降解过程的机理,并提出放电等离子体化学动力学理论研究中有待解决的几个问题。同时,针对放电等离子体水处理有机物降解过程研究中存在的困难,认为目前广泛应用于辐射化学研究中的采用脉冲辐射原理的动力学实验研究方法和考虑多因素交互作用的正交设计实验方法是今后值得借鉴的较有前景的研究方法。
The paper introduces the research progress and current status of the experimental and theoretical study on degradation rate of organic contamination in the process of treating the waste water by discharge plasma. Based on the existing experimental study, the influential factors on degradation rate of organic contamination by discharge plasma are classified into several aspects, such as the parameters of discharge electrode, those of the pulse power supply, the physics and chemical property of the waste water, the catalysis cooperated with the enhancement effect of the gas-liquid or solid-liquid mixed phases, the initial concentration of the organic contamination, the additive of inorganic salt or hydrogen peroxide and so on. The preliminary mechanisms of the mentioned factors individually acting on degradation rate of organic contamination in experiment are also discussed in detail. The current theoretical study on degradation rate of organic contamination by discharge plasma is summarized from the two aspects： one is the macro-kinetics, the other is micro-kinetics. Meanwhile, the relationship and essence are also analyzed for the further study. Besides, the existing problems which should he resolved exigently in the research of discharge plasma chemical reaction kinetics are presented, such as the solution of the electronic energy distribution function, the study method of non-equilibrium kinetics and nonlinear chemical kinetics, the inclusion of hydrodynamics equations in the current model and so on. Finally, the means of reaction kinetics investigated by use of pulse irradiation technology that has been widely used in the. research of radiation chemistry and the methodology of the orthogonal test that takes into account the interactions of several influential factors are recommended as two promising research methods.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2007年第2期150-153,185,共5页
High Voltage Engineering
基金
国家自然科学基金重点资助项目(50237010)
关键词
放电等离子体
有机物降解速率
影响因素
化学反应动力学
废水处理
discharge plasma
degradation rate of organic contamination
influential factors
chemical reaction kinetics
wastewater treatment
