共查询到17条相似文献,搜索用时 109 毫秒
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采用"等离子体特种垃圾焚烧炉"处理医疗废物 总被引:1,自引:0,他引:1
应用低温等离子体技术制备的"等离子体特种垃圾焚烧炉"可处理医疗垃圾及工业有毒有害危险废物,处理范围广,成本低.在1200℃以上高温焚烧可防止二恶英的形成,达到彻底无毒无害化. 相似文献
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低温等离子体技术及在空气污染控制中的应用 总被引:5,自引:0,他引:5
本文概述了等离子体的发展历史、概念及分类,介绍了低温等离子体的产生方法及其分解气态污染物的基本原理,详细分析了低温等离子体在空气污染控制领域的应用研究进展,并在此基础上提出了目前存在的问题及今后研究的方向。 相似文献
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应用低温等离子体技术制备的“等离子体特种垃圾焚烧炉”可处理医疗垃圾及工业有毒有害危险废物,处理范围广,成本低。在1200℃以上高温焚烧可防止二恶英的形成,达到彻底无毒无害化。 相似文献
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目前对异味恶臭废气的常用处理方法存在运转费用高、设备及运行管理要求高、占地面积大、净化效率不高、极易产生二次污染、易受污染物浓度及温度影响等缺点。低温等离子体降解污染物是利用高能电子、自由基等活性粒子与废气中的污染物作用,使污染物分子在极短的时间内发生分解,以达到降解污染物的目的。通过山东某制药公司废气处理项目应用实例,显示出低温等离子体处理废气的效果和经济效益的优势。 相似文献
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等离子体技术在环境污染治理中的应用研究 总被引:9,自引:0,他引:9
阐述了等离子体的产生机理、方法、分类及特点,从大气污染、水污染和固体废物三方面论述了等离子体技术在环境污染治理中的应用进展,展现了等离子体技术在废物处理中的应用前景。 相似文献
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由于等离子体的特异性能,近年来,除了在等离子体物理技术方面的研究有了长足的进展,人们越来越多地把等离子体技术用于合成新材料、表面改性、多相催化、治理污染以及工艺改进的各个方面.本文综述了等离子体技术在污染控制方面的应用如用等离子体技术治理二氧化碳,用等离子体化学降解有毒废气,等离子体活化法研究干法烟气脱硫脱硝新技术.本文特别介绍清华大学的樊友三教授等研究用等离子体技术将煤气化.经气化后的煤,无SO2排放,可得到优质的燃料.硫以硫化氢排放,而硫化氢的处理技术成熟,费用低,仅是二氧化硫的1/4-1/5.有效的治理二氧化硫的技术,社会效益是显著的,但科技含量高、投资大.为了解决资金来源问题本文提出了几项解决办法. 相似文献
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等离子气化技术在固体废物处理中的应用 总被引:3,自引:0,他引:3
针对国内固体废物处理的经验和情况,从保证处理的无害化效果以及让固体废物的处理经济可行结合的角度,介绍了等离子气化技术的应用效果及优势,认为采用等离子气化技术进行固体废物处理的时机已经成熟。 相似文献
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杜艳华 《中国环境管理干部学院学报》2013,(5):69-71
冷轧废乳化液是轧钢过程中排放的高浓度难降解废水,治理的关键是破乳技术。主要介绍了混凝工艺、膜分离工艺、电凝聚气浮工艺、Fenton氧化工艺、微电解工艺、微波破乳工艺原理及研究现状,并对每种工艺在乳化液废水破乳中的优缺点进行了阐述。其中混凝破乳和膜分离破乳是目前应用最广泛的技术,其他技术由于运行管理以及成本的原因应用相对较少,今后破乳技术的发展应该是高效、低成本的新技术开发或者对原有破乳技术进行革新。 相似文献
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Joseph L. Ebersole William J. Liss Christopher A. Frissell 《Journal of the American Water Resources Association》2003,39(2):355-368
ABSTRACT: Discrete cold water patches within the surface waters of summer warm streams afford potential thermal refuge for cold water fishes during periods of heat stress. This analysis focused on reach scale heterogeneity in water temperatures as influenced by local influx of cooler subsurface waters. Using field thermal probes and recording thermistors, we identified and characterized cold water patches (at least 3°C colder than ambient streamflow temperatures) potentially serving as thermal refugia for cold water fishes. Among 37 study sites within alluvial valleys of the Grande Ronde basin in northeastern Oregon, we identified cold water patches associated with side channels, alcoves, lateral seeps, and floodplain spring brooks. These types differed with regard to within floodplain position, area, spatial thermal range, substrate, and availability of cover for fish. Experimental shading cooled daily maximum temperatures of surface waters within cold water patches 2 to 4°C, indicating a strong influence of riparian vegetation on the expression of cold water patch thermal characteristics. Strong vertical temperature gradients associated with heating of surface layers of cold water patches exposed to solar radiation, superimposed upon vertical gradients in dissolved oxygen, can partially restrict suitable refuge volumes for stream salmonids within cold water patches. 相似文献
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Daniel L. Long Randel L. Dymond 《Journal of the American Water Resources Association》2014,50(4):977-987
This study examines the use of bioretention as a strategy to reduce the thermal impact associated with urban stormwater runoff in developing cold water stream watersheds. Temperature and flow data were collected during 10 controlled runs at a bioretention facility located in Blacksburg, Virginia. It was determined that bioretention has the ability to reduce the temperature of thermally charged stormwater runoff received from an asphalt surface. Significant reductions in peak and average temperatures (p < 0.001) were observed. However, this facility was unable to consistently reduce the temperature below the threshold for natural trout waters in Virginia. The ability of bioretention to reduce runoff volume and peak flow rate also serves to reduce the hydrothermal impact. An average thermal pollution reduction of nearly 37 MJ/m3 was calculated using an adopted threshold temperature of 20°C. Based on the results of this study, it was concluded that properly designed bioretention systems have the capability to reduce the thermal impact of urban stormwater runoff on cold water stream ecosystems. 相似文献
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Density functional theory (DFT) has been used to investigate the reaction pathways with steam reforming of glycerol under cold plasma conditions. Total energies, energy barriers, and reaction enthalpies at 298.15 K have been calculated at the GGA/PW91/DNP level. The calculation shows that, with the presence of steam, the energy barrier of glycerol conversion is reduced and the conversion from glycerol to H2 and CO is promoted under cold plasma conditions. The formation of syngas was through a multi-step pathway via the conversion of OHCH2CHOH, CH2OH, CH2O, HCO,·and CH3, while the recombination of H generated extra H2. The synthesis of hydrocarbons are from the recombination of·CH3,·CH2, and·CH, which could be primarily generated through glycerol dissociation. The structure of glycerol anion was also studied in this work, and it was less stable than the neutral molecule. The route for the formation of OHCH2CHOH·and CH2OH·from glycerol anion is thermodynamically favorable. 相似文献