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《化工经济技术信息》2008,(8)
环境保护部日前颁布的11项排放标准是《制浆造纸工业水污染物排放标准》、《电镀污染物排放标准》、《羽绒工业水污染物排放标准》、《合成革与人造革工业污染物排放标准》、《发酵类制药工业水污染物排放标准》、《化学合成类制药工业水污染物排放标准》、《提取类制药工业水污染物排放标准》、《中药类制药工业水污染物排放标准》、《生物工程类制药工业水污染物排放标准》、《混装制剂类制药工业水污染物排放标准》、《制糖工业水污染物排放标准》。 相似文献
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《中国轮胎资源综合利用》2018,(3)
正各省、自治区、直辖市、计划单列市财政厅(局)、国家税务局、地方税务局、环境保护厅(局):根据《中华人民共和国环境保护税法》及其实施条例的规定,现就环境保护税征收有关问题通知如下:一、关于应税大气污染物和水污染物排放量的监测计算问题纳税人委托监测机构对应税大气污染物和水污染物排放量进行监测时,其当月同一个排放口排放的同一种污染物有多个监测数据的,应税大气污染物按照监测数据的平均值计算应税污染物的排放量;应税水污染物按 相似文献
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本文介绍了蒸汽污染物的来源、透平污染物的形成、污染物对透平机的危害及从技术和管理上采取有效的防范措施,减少污染物对透平机的危害。 相似文献
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选取腐殖酸、卵清蛋白、硅溶胶、碳酸钙等作为实际水体中典型污染物配制原水,以实验室自制的聚偏氟乙烯中空纤维膜对配制的污染物原水进行膜蒸馏试验。通过监测通量的衰减及产水侧水质的变化考察不同污染物及污染物复配体系对膜蒸馏性能的影响。结果表明,膜蒸馏操作初期,有机质、胶体等在钙离子的作用下形成污染物聚集,加速过程通量的衰减并沉积在膜材料表面。对于有机类污染物,钙离子通过与有机类污染物分子上的官能团相互作用,络合有机质从而形成污染物聚集体;对于胶体类污染物,钙离子通过削弱两胶体粒子间的排斥作用促成胶体粒子的聚合,形成胶体类污染物聚集体,而钙离子并不构成胶体类污染物聚集体的化学组成。 相似文献
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<正>(接上期)5.2标准规范指南的制修订(1)氯碱工业污染物排放标准该标准是由环境保护部委托中国环境科学研究院组织制订的,是对《烧碱、聚氯乙烯工业水污染物排放标准》(GB 15581-95)的修订,规定了氯碱工业企业水和大气污染物排放限值、监测和监控要求,规定了水和大气污染物特别排放限值。本次修订的主要内容增加了大气污染物排放控制要求、调整了水污染物排放控制项目、收紧了水污染物排放控制要 相似文献
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On the reason why acid treatment of biomass enhances the biosorption capacity of cationic pollutants
Sung Wook Won Sun Beom Choi Yeoung-Sang Yun 《Korean Journal of Chemical Engineering》2014,31(1):68-73
The present work is aimed at understanding the effect of acid treatment and demonstrating the reason for its effect. For this, Corynebacterium glutamicum biomass was used as a model biomass. Two cationic (cadmium and Methylene Blue) and one anionic (Reactive Red 4) pollutants were used to evaluate the sorption capacity by the biomass. Isotherm experiments showed that acid treatment of the biomass increased the uptake of the cationic pollutants, but decreased that of the anionic pollutant. Through the results of FTIR and potentiometric titrations, it was found that carboxyl groups on the biomass increased after acid treatment. The carboxyl groups seem to be generated likely through hydrolysis of esters in the biomass under the acidic condition. Therefore, increase of the carboxyl groups provided the binding sites for cationic pollutants, whereas it may interfere with the binding of anionic pollutants. 相似文献
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本文提出一种多污染因子归一化环境影响评价方法模型,根据污染物毒理毒性将多污染因子的l环境分析问题转化为单因子状态进行考察。通过区域环境规划及污染物总量控制等实践研究,证实可以利用特征化的单因子解决环评中的多污染因子问题。与传统方法相比,本方法相对简单实用,有利于多污染物综合影响的评价管理,对于尚未制定评价标准的特征污染物质也可以纳入综合因子进行统一评价和管理,有利于实现高毒高污染的重点污染源率先控制削减目标,提高了特征有毒污染物环境控制及管理的可操作性。 相似文献
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Magdalena Anna Kara Sylwia Wdowiak-Wrbel Wojciech Sokoowski 《International journal of molecular sciences》2021,22(17)
Anthropogenic activities generate a high quantity of organic pollutants, which have an impact on human health and cause adverse environmental effects. Monitoring of many hazardous contaminations is subject to legal regulations, but some substances such as therapeutic agents, personal care products, hormones, and derivatives of common organic compounds are currently not included in these regulations. Classical methods of removal of organic pollutants involve economically challenging processes. In this regard, remediation with biological agents can be an alternative. For in situ decontamination, the plant-based approach called phytoremediation can be used. However, the main disadvantages of this method are the limited accumulation capacity of plants, sensitivity to the action of high concentrations of hazardous pollutants, and no possibility of using pollutants for growth. To overcome these drawbacks and additionally increase the efficiency of the process, an integrated technology of bacteria-assisted phytoremediation is being used recently. For the system to work, it is necessary to properly select partners, especially endophytes for specific plants, based on the knowledge of their metabolic abilities and plant colonization capacity. The best approach that allows broad recognition of all relationships occurring in a complex community of endophytic bacteria and its variability under the influence of various factors can be obtained using culture-independent techniques. However, for practical application, culture-based techniques have priority. 相似文献
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Lidia Szpyrkowicz 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2006,81(8):1375-1383
The influence of kinetic and hydrodynamic factors in electrochemical reactors used in the removal of pollutants from industrial wastewater is shown, distinguishing between the two main types of reactions, namely direct and mediated electro‐oxidation. The effect of stirring during treatment of four different types of wastewater is reported. Whilst for direct electro‐oxidation of pollutants, the influence of agitation on the performance of the reactor can be easily predicted from a mass transfer correlation, its effect during electro‐oxidation mediated in the homogeneous phase by a redox couple is not straightforward. The Hatta number can be a useful criterion to apply to electrochemical reactors performing mediated oxidation of compounds (in analogy to gas–liquid reactions), so as to define whether the reaction occurs in the bulk of the reactor or near the electrode, and thus can be affected differently by stirring. The hydrodynamic conditions in the reactor for treatment of industrial wastewater can affect the differential selectivity of the removal of pollutants and this can be used for optimising the performance of the reactor with respect to a target pollutant. Copyright © 2006 Society of Chemical Industry 相似文献
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高级氧化技术以产生具有强氧化能力的羟基自由基(·oH)为特点,该技术用于有效去除和降解有毒污染物,或者作为预处理将污染物转化为可生物降解化合物,然后通过传统的生物处理方法处理。该文总结了·OH的形成以及污染物的降解机制,同时阐述了高级氧化法的研究方向。 相似文献
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UiO-66系列金属有机骨架(MOFs)材料因具有较高的比表面积、丰富的孔结构、优异的结构稳定性和类半导体特性而广泛应用于污染物的吸附和催化领域。文中指出:液相有机污染物主要通过物理吸附、静电、氢键、π-π相互作用被UiO-66基材料吸附去除,同时由于电性等性质差异,UiO-66基材料可从性质差异显著的多种有机污染物中选择性吸附污染物,而气相有机污染物主要通过氢键或UiO-66基材料孔道被吸附去除,同时环境中的水汽对污染物的吸附去除具有显著影响;针对光催化,由于载流子的快速复合,纯UiO-66基材料具有较低的光催化活性,通过与半导体材料复合可显著提高材料载流子分离速率,同时活性位点高度均匀分散在UiO-66基材料表面,利于光的激发及污染物与活性位点的充分接触,进而显著提高材料的光催化活性。与此同时,本文也提出了UiO-66基材料在有机污染物吸附和去除中的不足之处。最后展望了UiO-66基材料的发展前景。 相似文献
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水污染是当前工业发展中亟待解决的问题之一,催化臭氧氧化降解有机污染物工艺具有绿色、高效和工艺简单的优点而被广泛应用,而其中的关键在于催化剂的选用。本研究对均相催化臭氧氧化和非均相催化臭氧氧化过程的机理进行了分析和总结,着重讨论了非均相催化臭氧氧化过程常采用的贵金属催化剂、过渡金属催化剂、碱土金属催化剂和非金属催化剂对臭氧氧化降解有机污染物的促进作用,对提高这些催化剂催化活性的方法进行了综述,总结了pH值、臭氧浓度、催化剂剂量和有机污染物浓度对催化臭氧氧化降解有机物过程的影响。指出目前催化臭氧氧化降解有机污染物过程面临的主要问题是活性组分的流失导致催化剂催化活性下降。在今后的研究中,开发和制备新型、高效、绿色、稳定的催化剂以及探究最佳工艺条件仍是研究的重点。可以通过提高催化剂的吸附能力以改善臭氧在水溶液中的传质,促进臭氧分子的分解,还可以通过不同活性组分的协同偶联有效抑制活性组分的流失,提高催化剂催化活性的同时提高催化剂的稳定性,以达到高效降解有机化合物的目的。 相似文献
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光催化净化室内空气技术的应用 总被引:4,自引:0,他引:4
应用纳米多功能光催化涂料可降解室内空气中甲醛、苯、氨等污染物。实验中,在13m^2的密闭室内、常温、常压条件下进行检测,5d后各种污染物浓度均降到国家标准以内。 相似文献