随着社会发展进程加快，工业化程度升高，环境污染问题日益突出，农业污水，

As the process of social development accelerates, the degree of industrialization is increasing, and environmental pollution problems are becoming increasingly prominent. The purification of agricultural sewage, industrial wastewater, and daily water and sewage needs to be solved urgently. This article introduces the application of plasma and plasma in the environment. Including the plasma generation mechanism, electronic avalanche, streamer discharge, etc. are explained and how plasma acts on the degradation of organic pollutants, and wastewater sterilization. And it is mainly based on the phase distribution of the plasma discharge process and the treatment object, and respectively describes the treatment of pollutants by pure gas phase discharge, pure liquid phase discharge, and gas phase discharge. It specifically introduces common discharge forms such as sliding arc discharge, dielectric barrier discharge, and the corresponding discharge devices. The article also mentions other methods that are often used in conjunction with plasma to achieve better results, such as ultrasound assistance, photocatalyst assistance, and chemical additive synergy. The first part of the experiment uses the fungicide azoxystrobin as a model pollutant. Azoxystrobin is an efficient and broad-spectrum fungicide, which has been tested in natural waters many times. Has caused varying degrees of pollution. A new type of underwater array jet reactor was used to investigate the degradation of azoxystrobin under the conditions of input voltage, gas flow, and initial temperature of the solution. And a bubble model was established to analyze in detail the mass transfer of gas flow by affecting the mass transfer effect and then the degradation effect. , The thermal effect is greater than the proportion of active particles, the mass transfer effect is gradually enhanced, and the degradation effect is gradually enhanced. When the gas velocity increases from 1.5 SLM to 5 SLM, the thermal effect is less than the proportion of active particles, the mass transfer effect is gradually weakened, and the degradation effect is also weakened. And the analysis shows that the initial temperature of the solution also affects the final degradation rate by affecting the mass transfer rate and mass transfer time. Under the most suitable conditions, the degradation rate of azoxystrobin can reach 98.1%. The degradation products of azoxystrobin were also sorted out through LC/MS, and two degradation pathways were proposed. One nitrile group is hydrolyzed and rearranged, and the other is pyrimidine ring opening. Azoxystrobin eventually converts small molecules of benzoic acid, and under the continued action of plasma, it completely becomes inorganic particles, such as water molecules, nitrate, and carbon dioxide. The selected model pollutant in the second part of the experiment is methyl blue, an industrial dye with extremely high solubility. The active plume of the dielectric barrier discharge plasma is introduced into the water to achieve degradation. The input voltage, gas flow rate, FeCl2, ·4H2O, FeSO4·7H2O, NaCl three substances added amount to the adsorption and degradation of methyl blue are also studied. For the addition of three substances, the relevant effects of iron and chlorine in plasma treatment are studied. With FeCl2·4H2O added, the result of treatment for 3 minutes is 99. 4%, which is nearly 3 times better than pure plasma treatment with the same parameters. Based on the experimental results and experimental phenomena, a mechanism of the iron-chlorine waterwheel effect is proposed. And through the Fourier infrared change spectrum to verify the precipitation of the adsorption of methyl blue, but also from the side proved the importance of the mechanism of the iron-chlorine waterwheel effect. The article also has some prospects for the future of plasma and the environment. The direction of plasma sewage treatment must be towards a simpler step and lower cost.

With the acceleration of social development, the degree of industrialization, environmental pollution problems are becoming more and more prominent, agricultural sewage, industrial wastewater, daily water sewage purification problems need to be solved. This paper introduces the application of plasma and plasma in the environment. Including plasma production process, electronic avalanche, discharge and other explanations and plasma how to act on the degradation of organic pollutants, wastewater sterilization and so on. And mainly by the plasma discharge process and the phase distribution of the processing object, respectively, the pure gas phase discharge, pure liquid phase discharge, as well as the gas liquid phase discharge treatment of pollutants. The common discharge forms such as sliding arc discharge, medium blocking discharge and corresponding discharge devices are introduced. It also mentions other ways that are often associated with plasma to achieve better results, such as ultrasound assistance, photocatalyst assistance, chemical addition synergy, etc. The first part of the experiment in this paper is based on the fungicide esters as a model pollutant. Ester is an efficient broad-spectrum fungicide that has been tested in natural water bodies many times. has caused varying degrees of pollution. Using a new underwater array flow reactor, the degradation of sterilization under the conditions of input voltage, gas flow and initial temperature of solution is probed. The bubble model is established to analyze in detail the effect of gas flow mass transmission by affecting the mass transmission effect and then the degradation effect. The thermal effect is greater than the proportion of active particles, the mass transmission effect is gradually enhanced, and the degradation effect is gradually enhanced. When the air speed increases from 1.5 SLM to 5 SLM, the thermal effect is less than the proportion of active particles, the mass transmission effect is gradually reduced, and the degradation effect is also reduced. The initial temperature of the solution is also analyzed to influence the final degradation rate by affecting the mass transfer rate and the transfer time. Under the most suitable conditions, the degradation rate of sterilization can reach 98.1%. The degradation product of the sterilization by liquid joint is also combed, and two degradation paths are proposed. One barium-based hydrolyzed re-row, one is the ring open. In the end, the esters are converted into small molecule benzoic acid, and under the continued action of the plasma, completely become inorganic particles, such as water molecules, nitric acid roots, carbon dioxide and so on. The second model pollutant selected in the experiment was methyl blue, an industrial dye with a great solubility. The media blocked discharge plasma active plume into the water, to achieve degradation of the same study input voltage, gas flow, FeCl2, 4H2O, FeSO4,7H2O, NaCl three substances added amount of methyl blue adsorption degradation. For the addition of three substances, the correlation between iron and chlorine in plasma treatment is studied. FeCl2.4H2O was added, and the result of processing 3min was 99.4%, which is nearly 3 times better than the pure plasma processing effect of the same parameters. According to the experimental results, the mechanism mechanism of the effect of iron chlorine water truck is proposed. The adsorption of precipitation to methyl blue is verified by the Fourier infrared change spectral map, and the mechanism mechanism of iron chlorine water truck effect is also verified from the side. In this paper, there is also a partial vision of the future plasma and environment, plasma sewage treatment direction is certainly towards a step simplification, low cost.

With the acceleration of social development and the increase of industrialization, the problem of environmental pollution has become increasingly prominent. The problems of agricultural wastewater, industrial wastewater and daily water purification need to be solved. This paper introduces plasma and its application in environment. The mechanism of plasma generation, electron avalanche, streamer discharge and how plasma acts on degradation of organic pollutants and sterilization of wastewater are explained. And mainly based on the plasma discharge process and the phase distribution of the treatment object, the pure gas phase discharge, the pure liquid phase discharge and the gas-liquid phase discharge treatment of pollutants are described respectively. The common discharge forms such as sliding arc discharge, dielectric barrier discharge and the corresponding discharge devices are introduced in detail. In this paper, we also mentioned other ways which are often combined with plasma to achieve better results, such as ultrasonic assistance, photocatalyst assistance, chemical addition cooperation and so on. In the first part of the experiment, azoxystrobin was used as a model pollutant. Azoxystrobin is an effective broad-spectrum fungicide, which has been detected in natural water for many times. It has caused different degrees of pollution. A new type of underwater array jet reactor was used to investigate the degradation of azoxystrobin under the conditions of input voltage, gas flow rate and initial solution temperature. A bubble model was established to analyze the effect of gas flow on mass transfer and degradation. The thermal effect is greater than the proportion of active particles, the mass transfer effect is gradually enhanced, and the degradation effect is also gradually enhanced. When the gas velocity increases from 1.5 SLM to 5 SLM, the influence of thermal effect is less than that of the proportion of active particles, the mass transfer effect is gradually weakened, and the degradation effect is also weakened. The initial temperature of the solution also affects the final degradation rate by affecting the mass transfer rate and time. Under the optimum conditions, the degradation rate of azoxystrobin could reach 98.1%. The degradation products of azoxystrobin were sorted out by LC-MS, and two degradation pathways were proposed. One is the hydrolysis rearrangement of nitrile group and the other is the ring opening of pyrimidine ring. Azoxystrobin is eventually converted into small molecule benzoic acid, and under the continuous action of plasma, it completely turns into inorganic particles, such as water molecules, nitrate, carbon dioxide and so on. In the second part of the experiment, the selected model pollutant is methyl blue, an industrial dye with high solubility. The active plume of dielectric barrier discharge (DBD) plasma was introduced into water to realize the degradation. The adsorption degradation of methyl blue by input voltage, gas flow rate, FeCl2, · 4H2O, FeSO4 · 7H2O and NaCl was also studied. The effects of iron and chlorine on plasma treatment were studied. When FeCl 2 · 4H 2O is added, the result of treatment for 3 min is 99.4%, which is nearly three times better than that of pure plasma treatment with the same parameters. According to the experimental results and phenomena, a mechanism of iron chloride water vehicle effect is proposed. The adsorption of methyl blue on the precipitate was verified by Fourier transform infrared spectroscopy, and the importance of the mechanism of iron chloride water vehicle effect was also confirmed. This paper also has some prospects for the future of plasma and environment. The direction of plasma sewage treatment is to simplify the steps and reduce the cost.<br>