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湿式静电除尘器在制酸尾气治理中的应用
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作者 张富兵 《节能与环保》 2022年第8期84-85,共2页
本文介绍了某企业制酸双氧水脱硫尾气采用湿式静电除尘器除颗粒物的工艺、主要设备和运行情况。针对湿式静电除尘器的结构特点、工作原理及在使用过程中的注意事项进行了分析,并提出了防范措施,保证了系统的正常运行和尾气的达标排放。
关键词 制酸 脱硫尾气 湿电 除颗粒物 达标排放
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一种船用中速柴油机减排技术方案设计
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作者 李荣川 魏叶萌 魏亮 《内燃机与配件》 2021年第18期41-43,共3页
本文针对某型船用中速柴油机在启动或低负荷工况加载荷时尾气排放质量差,黑烟明显问题,利用尾气颗粒物在高温环境中与氧气在催化剂作用下发生反应原理,提出了一种降低在该工况黑烟排放的反应器装置技术方案设计,并进行了几何建模与仿真... 本文针对某型船用中速柴油机在启动或低负荷工况加载荷时尾气排放质量差,黑烟明显问题,利用尾气颗粒物在高温环境中与氧气在催化剂作用下发生反应原理,提出了一种降低在该工况黑烟排放的反应器装置技术方案设计,并进行了几何建模与仿真计算,结果显示能够适用减排需求。 展开更多
关键词 尾气减排 除颗粒物 反应器 低负荷 环保改造
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Fluidized-Bed Bioreactor Applications for Biological Wastewater Treatment: A Review of Research and Developments 被引量:15
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作者 Michael J. Nelson George Nakhla Jesse Zhu 《Engineering》 SCIE EI 2017年第3期330-342,共13页
Wastewater treatment is a process that is vital to protecting both the environment and human health. At present, the most cost-effective way of treating wastewater is with biological treatment processes such as the ac... Wastewater treatment is a process that is vital to protecting both the environment and human health. At present, the most cost-effective way of treating wastewater is with biological treatment processes such as the activated sludge process, despite their long operating times. However, population increases have created a demand for more efficient means of wastewater treatment, Fluidization has been demonstrated to in- crease the efficiency of many processes in chemical and biochemical engineering, but it has not been widely used in large-scale wastewater treatment. At the University of Western Ontario, the circulating fluidized-bed bioreactor (CFBBR) was developed for treating wastewater. In this process, carrier particles develop a biofilm composed of bacteria and other microbes. The excellent mixing and mass transfer characteristics inherent to fluidization make this process very effective at treating both municipal and industrial wastewater. Studies of lab- and pilot-scale systems showed that the CFBBR can remove over 90% of the influent organic matter and 80% of the nitrogen, and produces less than one-third as much biological sludge as the activated sludge process. Due to its high efficiency, the CFBBR can also be used to treat wastewaters with high organic solid concentrations, which are more difficult to treat with conventional methods because they require longer residence times; the CFBBR can also be used to reduce the system size and footprint. In addition, it is much better at handling and recovering from dynamic loadings (i.e., varying influent volume and concentrations) than current systems. Overall, the CFBBR has been shown to be a very effective means of treating wastewa- ter, and to be capable of treating larger volumes of wastewater using a smaller reactor volume and a shorter residence time. In addition, its compact design holds potential for more geographically localized and isolat- ed wastewater treatment systems. 展开更多
关键词 WASTEWATER Biological wastewater treatment Fluidized-bed technology Fluidized-bed reactor Biological nutrient removal Bio-particles High-efficiency process
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Fly Ash Resistivity Profiling for South African Coal Fired Power Stations
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作者 Gerald Chauke Rupert Gouws 《Journal of Energy and Power Engineering》 2013年第12期2306-2311,共6页
Particulate emission is a major problem in industrial processes, mainly power plants that make use of coal as a primary source of energy. Stringent emissions limits, set by government organisations requires industries... Particulate emission is a major problem in industrial processes, mainly power plants that make use of coal as a primary source of energy. Stringent emissions limits, set by government organisations requires industries to conform to these limits to ensure that air quality is sustained and with minimum pollutant present. Electrostatic precipitators are typically used to filter and collect these particulate emissions. Fly ash resistivity is a primary parameter in the collection of particulate emissions, and there is a resistivity range at which electrostatic precipitator collection is most efficient and anything outside this range limits, their operation. High resistivity ash results in back-corona discharge, whilst low resistivity results in particle re-entrainment into the flue gas stream. The purpose of this paper is to investigate and obtain a fly ash resistivity profile for existing power plants in South Africa. Ash samples obtained from power plants are, tested making use of an ash-resistivity test oven, in accordance with IEEE Standard 548-1984. This paper discusses obtained experimental results, to determine the resistivity profile at which South African power plant electrostatic precipitators operate. The electrical efficiency of the electrostatic precipitator system is evaluated based on the obtained resistivity profiles. 展开更多
关键词 Electrostatic precipitator fly ash RESISTIVITY back-corona re-entrainment.
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空气洁净技术的新发展 被引量:5
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作者 许钟麟 孙宁 曹国庆 《建筑科学》 北大核心 2013年第10期34-40,共7页
由于生产活动和生活质量要求提高,使空气洁净技术应用到高新技术和广大民生的领域。扩大应用和节能成为其重要方向。中国建筑科学研究院和国内广大空气洁净技术工作者一道,在进入新世纪以来,在为高新技术和民生服务,在学科前沿做贡献,... 由于生产活动和生活质量要求提高,使空气洁净技术应用到高新技术和广大民生的领域。扩大应用和节能成为其重要方向。中国建筑科学研究院和国内广大空气洁净技术工作者一道,在进入新世纪以来,在为高新技术和民生服务,在学科前沿做贡献,探索节能之路方面做了大量工作,这三方面也是今后的努力方向。 展开更多
关键词 建筑环境 空气洁净 除菌 除颗粒物
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