《环境工程》投稿指南

<正>一、征稿内容1.工业、厂矿和民用领域产生的废气、废水、固体废弃物等的防治和综合利用新技术。2.污染防治创新性改进的工艺、设备、方法、材料以及运行管理经验。3.各行业节能减排和清洁生产技术。4.受污染场地的修复技术。5.环境质量、污染物监测技术和环境评价领域的创新技术和经验。二、稿件具体要求     

书讯

<正>张殿印、王海涛主编的《袋式除尘器管理指南—安装、运行与维护》,由机械工业出版社于2013年11月出版,全国新华书店和机械工业出版社官网发行。该书是专门介绍袋式除尘器安装、运行与维护的管理技术书。全书约75万字,共分为8章,分别介绍袋式除尘器的分类、性能、选择,袋式除尘器安装准备、安装流程,安装方法与验收,袋式除尘器调整试验、运行操作、维护保养、故障排除和袋式除尘系统运行管理。本书内容全面,资     

新型有机废液焚烧炉炉内燃烧过程的数值模拟

为了实现化工有机废液的减量无害化处理,提出了一种新型废液焚烧炉。以某20 t/h废液焚烧炉为研究对象,利用fluent软件对新型有机废液焚烧炉炉内燃烧过程进行了数值模拟,分析了炉内温度场分布、速度场、水分浓度场分布。结果表明:炉内一二层燃烧器分级布置的四角切圆燃烧方式能很好的组织废液的干燥及燃烧,焚烧炉设计合理。研究结果可为改进废液焚烧炉的设计提供参考。     

等离子体法脱硫脱硝一体化试验研究

对等离子体法烟气脱硫脱硝一体化技术进行了中试研究。在不同温度下,烟气中NOx及SO2的脱除量随温度升高而升高,其中脱硝效率最大化的温度区间约为210℃;在还原剂存在的条件下,温度提高40℃,脱硫脱硝效率平均上升70%和50%,氮氧化物的脱除效率对温度变化更加敏感,应予以更多考虑。     

Mo-modified Pd/Al2O3 catalysts for benzene catalytic combustion

Mo-modified Pd/Al2O3catalysts were prepared by an impregnation method and tested for the catalytic combustion of benzene. The catalysts were characterized by N2 isothermal adsorption, X-ray diffraction（XRD）, X-ray photoelectron spectroscopy（XPS）, temperatureprogrammed desorption of NH3（NH3-TPD）, H2temperature-programmed reduction（H2-TPR）, and high-angle annular dark-field scanning transmission electron microscopy（HAADF-STEM）. The results showed that the addition of Mo effectively improved the activity and stability of the Pd/Al2O3catalyst by increasing the dispersion of Pd active components, changing the partial oxidation state of palladium and increasing the oxygen species concentration on the surface of catalyst. In the case of the Pd-Mo/Al2O3catalyst,benzene conversion of 90% was obtained at temperatures as low as 190°C, which was 45°C lower than that for similar performance with the Pd/Al2O3catalyst. Moreover, the 1.0% Pd-5% Mo/Al2O3catalyst was more active than the 2.0% Pd/Al2O3catalyst. It was concluded that Pd and Mo have a synergistic effect in benzene catalytic combustion.     

Two-step accelerated mineral carbonation and decomposition analysis for the reduction of CO2 emission in the eco-industrial parks

Carbon dioxide（CO2） emissions are a leading contributor to the negative effects of global warming. Globally, research has focused on effective means of reducing and mitigating CO2 emissions. In this study, we examined the efficacy of eco-industrial parks（EIPs） and accelerated mineral carbonation techniques in reducing CO2 emissions in South Korea.First, we used Logarithmic Mean Divisia Index（LMDI） analysis to determine the trends in carbon production and mitigation at the existing EIPs. We found that, although CO2 was generated as byproducts and wastes of production at these EIPs, improved energy intensity effects occurred at all EIPs, and we strongly believe that EIPs are a strong alternative to traditional industrial complexes for reducing net carbon emissions. We also examined the optimal conditions for using accelerated mineral carbonation to dispose of hazardous fly ash produced through the incineration of municipal solid wastes at these EIPs. We determined that this technique most efficiently sequestered CO2 when micro-bubbling, low flow rate inlet gas, and ammonia additives were employed.     

Pd/activated carbon sorbents for mid-temperature capture of mercury from coal-derived fuel gas

Higher concentrations of Hg can be emitted from coal pyrolysis or gasification than from coal combustion, especially elemental Hg. Highly efficient Hg removal technology from coal-derived fuel gas is thus of great importance. Based on the very excellent Hg removal ability of Pd and the high adsorption abilities of activated carbon（AC） for H2 S and Hg, a series of Pd/AC sorbents was prepared by using pore volume impregnation, and their performance in capturing Hg and H2 S from coal-derived fuel gas was investigated using a laboratory-scale fixed-bed reactor. The effects of loading amount, reaction temperature and reaction atmosphere on Hg removal from coal-derived fuel gas were studied. The sorbents were characterized by N2 adsorption, X-ray diffraction（XRD） and X-ray photoelectron spectroscopy（XPS）. The results indicated that the efficiency of Hg removal increased with the increasing of Pd loading amount, but the effective utilization rate of the active component Pd decreased significantly at the same time. High temperature had a negative influence on the Hg removal. The efficiency of Hg removal in the N2-H2S-H2-CO-Hg atmosphere（simulated coal gas） was higher than that in N2-H2S-Hg and N2-Hg atmospheres, which showed that H2 and CO, with their reducing capacity, could benefit promote the removal of Hg. The XPS results suggested that there were two different ways of capturing Hg over sorbents in N2-H2S-Hg and N2-Hg atmospheres.     

垃圾“零填埋”,路在何方?

<正>垃圾主要指在日常生活中为日常生活提供服务的活动中产生的固体废物。与其他固体废物不同的是,垃圾是我们每个人每一天都要产生和排放的,不可避免地要与我们经常性地发生"亲密接触",处理不当会影响市容、传播疾病和污染环境。正因为     

从“引进来”到“走出去”

<正>从2010年的巴基斯坦核电援助项目,到2013年的英国欣克利角(Hinkley Point C)核电项目再到罗马尼亚切尔纳沃德核电项目;从1982年引进国外技术建设我国大陆第一座大型商用核电站,到2014年4月具有完全自主知识产权的"华龙一号"首次亮相;在经历了昔日的"拜师学艺"和通过引进消化吸收再创新增强"内功"之后,中国核电正在一步步由"中国制造"向"中国创造"转变,核电"走出去"正成为一张绚丽的名片。化石能源使用的负作用已成为地球的     

乡镇小型屠宰场污水处理技术研究

本文在分析生猪屠宰污水的来源及水质特点基础上,对比各种污水处理的好氧和厌氧的方法与措施,提出将“两级沉淀＋两段曝气”工艺应用到小型屠宰场污水处理系统中,具有重要的理论意义和工程实用价值.