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电化学方法具有无二次污染、工艺简单、容易操作、运行维护方便等优点,在含油废水处理领域逐渐受到应用。文章主要对电絮凝、电氧化及微电解三种电化学方法的基本原理及研究进展进行了简单的介绍。讨论了电化学方法在处理含油废水时的可行性,指出该技术存在的主要问题以及发展方向。 相似文献
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主要研究了3-甲氧基噻吩的合成,并通过电化学方法合成了聚(3-甲氧基噻吩)电致变色膜。最后采用电化学扫描方法研究了膜的电致变色行为。 相似文献
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为了对有机物吸附饱和的活性炭纤维(ACF)进行电化学再生研究,以含油废水为模拟有机物,通过测量再生前后ACF对含油废水的吸附效果,考察了电流密度、再生时间、pH值、电解质的电化学再生的影响因素,并研究了电化学再生过程对ACF结构的影响以及ACF电化学再生的机理。结果表明,在电流密度为30 mA·cm-2,pH值为4,15 g·L-1 NaCl的溶液中再生120 min,再生率可达到90%,5次电化学再生循环后,ACF保持较高的吸附容量。再生后ACF的表面没有明显损伤,比表面积也没有明显减小,微孔孔径分布于0.5~1.0 nm。由紫外光谱分析可知,ACF的电化学再生机理主要包括电脱附及电化学氧化过程。 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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电化学法处理工业废水和生活污水的研究与应用 总被引:1,自引:0,他引:1
工业废水和城市生活废水中组成越来越复杂,可采用电化学法进行废水处理。综述了电化学法处理废水的优缺点,介绍了电解絮凝法、电解气浮法、电催化氧化法和电-Fenton法的作用原理,举例说明了电化学法在海上平台生活污水、高盐度废水、含铬废水和乳化废水处理中的应用,并提出了电化学法目前应用所遇到的问题和今后的研究发展方向。 相似文献
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含油污水处理方法研究 总被引:2,自引:0,他引:2
综述了含油污水的来源及危害,较系统地介绍了盐析法、絮凝法、气浮法、粗粒化法、膜分离法、吸附法和生物法等处理含油污水的方法。最后介绍了微波法这种新型的含油污水处理方法。 相似文献
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含油废水处理技术的研究与应用现状 总被引:24,自引:0,他引:24
综述了含油废水的来源、危害与分类,并对重力法、气浮法、电化学法、吸附法、超声波法和生物法等传统的含油废水处理方法的原理、优缺点及改进作了较详细的论述。分析了石油工业含油废水的特征并对现有工艺应用现状作了概述。根据目前研究现状预测了含油废水处理方法的发展趋势。 相似文献
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Apostolos Giannis Michael Kalaitzakis Evan Diamadopoulos 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2007,82(7):663-671
Background Olive mill wastewater (OMW) constitutes a very strong agro‐industrial wastewater posing severe environmental threats in olive oil producing countries. The main objective of this study was to treat olive mill wastewater by electrochemical oxidation. The variables studied included the type and concentration of electrolyte solutions, voltage and time applied. Results: The electrolyte type and concentration significantly affected the degradation efficiency of the electrochemical oxidation. Optimal conditions for NaCl concentration were 3% (w/v) and 16 V. At these conditions chemical oxygen demand (COD) removal reached 70.8% after 8 h of electrochemical treatment, while color and turbidity were completely removed after short periods of treatment. However, bio‐assays indicated that the ecotoxicity of the treated wastewater remained unchanged, possibly due to the formation of chlorinated by‐products. Na2SO4 did not demonstrate sufficient efficiency. The simultaneous use of FeCl3 and NaCl contributed to electro‐coagulation of OMW. After settlement, two separate phases were formed: the supernatant phase and the settled solids. Under optimal conditions (2% Na2SO4 + 1% FeCl3; 24 V), the removal efficiency of COD reached 85.5% at the supernatant phase. Conclusion: NaCl was an effective electrolyte for OMW treatment. The electro‐coagulation process was also a successful process, but as in the case of NaCl the remaining acute toxicity of treated OMW was high. Copyright © 2007 Society of Chemical Industry 相似文献
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沿海港口油污染对沿海生态环境危害巨大,治理困难。因此对沿海港口含油废水的主要来源,港口处理油污水的过程和存在的问题进行了总结概括,并介绍了传统含油废水处理方法中吸附法和膜法在近年来的发展状况,总结了这两种方法在深度处理含油废水方面所取得的最新研究成果,最后对港口油污水处理技术的发展趋势进行了展望。 相似文献
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太阳能电絮凝技术(SPEC)是一种水处理新技术,其结合了太阳能光伏发电可再生、可持续的特点和电絮凝处理废水无需添加化学药剂、产泥量少、设备易操作、占地小的优势,为太阳能丰富的地区带来了更加高效、环保和节能的水处理方法。本文阐明了电絮凝的原理,并分析了阳极材料、电极连接方式、电流密度、初始pH、电导率和极板间距对废水中污染物去除效率的影响。随后,重点综述了国内外学者对SPEC技术处理染料废水、含磷废水、含油废水、偏远地区分散式废水和SPEC与其他技术耦合处理废水的研究进展。最后,点明了SPEC技术当前存在的不足及挑战,并对未来的研究方向提出了展望。 相似文献