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《Planning》2015,(3):473-475
研究了活性炭吸附法处理含铀放射性废水的最佳条件。试验结果表明,活性炭具有良好的除铀效果,在所选择的条件下,活性炭吸附法对铀的去除率≥96%,同时对重金属铬、镉、铅、铜也有一定的吸附作用。用活性炭吸附法除铀,方法简单,除铀率高,特别适合实验室含铀废水的处理。 相似文献
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因装修引起的住宅室内空气污染主要包括甲醛污染、苯类污染、氨气污染和氡气污染。分析上述污染物的来源,介绍光触媒、臭氧、负离子、活性炭、抗污染花草等多种室内空气污染治理方法,比较各种治理方法的利弊特点。 相似文献
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室内苯系物污染主要来源于装修用的装饰涂料和木器油漆等化学品。苯系物污染治理较为常见的几种方法有源头控制法、空气流通法、观赏植物净化法、活性炭吸附法、空气净化设备。选取住户为实验对象进行跟踪调查,根据GB50325—2001《民用建筑工程室内环境污染控制规范》要求设计苯系物污染治理效果对比实验。对比实验表明:实验采用的开窗通风、植物净化、活性炭吸附等三种治理方法中,以开窗通风的治理效果最好,1000 g活性炭吸附苯系物的能力高于2盆虎尾兰和1盆常春藤组合的吸附能力。 相似文献
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雾霾和室内甲醛超标是京津冀地区典型的建筑室内空气品质问题.本次研究模拟了上述室内污染环境条件,设计并搭建了实验测试装置,对包括HEPA过滤、活性炭吸附、光触媒净化等在内的多种技术开展了应用效果比对研究.通过对测试结果的总结分析,得出了上述净化技术的适用条件,相关结论可为设计人员和科研人员在进行技术选型时提供参考依据. 相似文献
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本文讨论了室内甲醛污染的主要来源和对人身体健康的危害,比较详细地叙述了目前治理室内甲醛污染主要吸附方法,并分析了各种方法的优缺点。本文认为,针对每种方法的优缺点和住宅内部实际情况选用适当技术、尤其是多种技术相结合,可对室内甲醛污染实现有效控制与治理。 相似文献
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磷酸—微波法活化树叶制备活性炭的初步研究 总被引:6,自引:0,他引:6
以废弃树叶为原料采用磷酸-微波法制备活性炭,通过正交试验考察了树叶与磷酸的质量体积比(固液比)、微波功率、辐照时间、磷酸浓度等因素对活性炭吸附性能的影响。结果表明,在磷酸-微波法中,微波功率是影响活性炭吸附性能的关键因素。以正交试验结果为基础,从经济技术角度出发,确定了活性炭制备工艺优化参数:固液比为1:2、微波功率为1000W、微波辐照时间为7min、磷酸浓度为67%,该条件下制备的活性炭对焦化废水中TOC的吸附容量为98mg/g。该活性炭制备方法为废弃物的综合利用找到了新的途径。 相似文献
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室内空气污染的危害得到逐步认识的同时,人们也意识到了维持良好的室内空气品质的重要性,于是有效的防治和治理室内空气净化技术成为了目前最为迫切的需求。简明地阐述了室内空气污染物的来源、危害,并且客观地评价了目前室内空气传统污染治理方法如通风换气、吸附法、臭氧净化法、静电除尘法、负离子净化法,以及部分新技术如光触媒法、空气触媒法、二氧化钛-活性炭纤维合成技术和纳米二氧化钛等离子体放电催化空气净化技术等的优缺点,最后展望了未来室内空气净化技术的发展前景。 相似文献
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针对某声学实验室内甲醛污染物浓度严重超标的问题进行了实验分析,发现污染气体主要源头为制作声学实验室内壁的消声材料.针对实验室已建成并投入使用的实际情况,提出在实验室内设置具有浸渍铜锰氧化物的活性炭净化装置,以实现对甲醛的高效吸附.实验验证表明,浸渍铜锰氧化物的活性炭材料相比普通活性炭材料对甲醛的吸附效率明显提高,由普通... 相似文献
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文章在对ACF的纳米空间结构及其载体功能特性以及ACF纳米结构上甲醛的衍生反应及其吸附/解吸原理,进行深入研究基础上,揭示了室内空气中甲醛在ACF上的吸附与解析动力学过程。根据Langmuir-Rideal定理,描述了甲醛与PFBHA-HCHO反应定量关系;推导出PFBHA-HCHO肟化合物浓度的反应速率与室内空气中甲醛浓度之间的一级反应线性回归方程,为定量检测室内空气中甲醛提供了理论依据。 相似文献
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Formaldehyde is a common indoor pollutant that is an irritant and has been classified as carcinogen to humans. Adsorption technology is safe and stable and removes formaldehyde efficiently, but its short life span and low adsorption capacity limit its indoor application. To overcome these limitations, we propose an in‐situ thermally regenerated air purifier (TRAP) which self‐regenerates as needed. This purifier has four working modes: cleaning mode, regeneration mode, exhaust mode, and outdoor air in‐take mode, all of which are operated by valve switching. We developed a real‐scale TRAP prototype with activated carbon as adsorbent. The experimental testing showed that the regeneration ratios for formaldehyde of TRAP were greater than 90% during 5 cycles of adsorption‐regeneration and that through the 5 cycles, there was no damage to the adsorption material as confirmed by scanning electron microscope (SEM) and Brunauer‐Emmett‐Teller (BET) tests. The total energy consumption by the prototype for purifying 1000 m3 indoor air was 0.26 kWh. This in‐situ thermal‐regeneration method can recover the purifier's adsorption ability through at least five cycles. 相似文献
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利用活性炭颗粒过滤器可以有效地去除室内空气中甲醛等低浓度有机污染物.实验测试了不同实验条件下以及过滤器本身的一些因素时过滤器净化效率的影响.结果表明:过滤风量、污染物的初始浓度、活性炭颗粒用量、活性炭颗粒粒度、净化网的形状等因素时过滤器吸附效果均有影响. 相似文献
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对国标“GB/T18204.26-2000酚试剂比色法”和XP-308型甲醛分析仪进行样品的对比实验分析及显著性差异的检验,得出了XP-308型甲醛分析仪与酚试剂比色法两种方法无显著性差异。并对XP-308型甲醛分析仪检测室内空气中甲醛含量的优势进行了分析。 相似文献
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Organic air pollutants inside and outside residences in Shimizu, Japan: levels, sources and risks 总被引:1,自引:0,他引:1
Concentrations of 38 organic air pollutants including aromatic hydrocarbons (AHCs), carbonyl compounds (CCs), volatile organic halogenated compounds (VOHCs), and organophosphorus compounds (OPCs) were measured in indoor and outdoor air in an industrial city, Shimizu, Shizuoka Prefecture, Japan. Levels of pollutants tended to be higher indoors than outdoors in both summer and winter except for benzene, carbon tetrachloride, trichloroethylene, tetrachloroethylene, and dichlorvos (DDVP). This trend was especially pronounced for CCs such as formaldehyde and acetaldehyde. For the organic air pollutants, the concentrations of AHCs and VOHCs substantially increased in winter, but not those of CCs and OPCs; the trends were similar for both indoors and outdoors. We investigated possible indoor sources of pollutants statistically. Multiple regression analysis of corresponding indoor and outdoor concentrations and the responses to our questionnaire showed that indoor concentrations of certain AHCs were significantly affected by their outdoor concentrations and cigarette smoking. For formaldehyde, indoor concentrations were significantly affected by house age and the presence of carpet or pets. For p-dichlorobenzene (pDCB), the concentrations in bedroom trended to be higher than those in other indoors and outdoors, suggested that mothballs for clothes present in bedrooms are the principal indoor source of pDCB. We compared indoor and outdoor pollutant concentrations to acceptable risk limits for 11 organic air pollutants. In indoors without smoking samples, the geometric mean concentrations of benzene, formaldehyde, acetaldehyde, carbon tetrachloride, pDCB, and DDVP exceeded the equivalent concentration representing the upper bound of one-in-one-hundred-thousand (1x10(-5)) excess risk over a lifetime of exposure. 相似文献