共查询到19条相似文献,搜索用时 734 毫秒
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作为一种环保型水处理技术,电解法广泛应用于各种水处理中。详细介绍了电解絮凝法、电解气浮法和电催化氧化法的原理,列举了电解法在含铬废水、城市生活垃圾渗滤液、乳化废水和化纤浆粕黑液处理中的应用,分析了电解法今后的研究方向。 相似文献
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介绍了电絮凝原理及集成技术在水处理领域中的应用研究进展,作为一种利用电解产生的金属离子及其多核羟基络合物和氢氧化物将溶液中污染物进行凝聚、吸附与氧化的水处理技术,电絮凝具有去除效率高、操作控制简便、污泥产出量少、处理成本低等优点。指出电絮凝与其他水处理工艺组合可进一步提高污染物去除效率并降低系统能耗,认为未来电絮凝集成技术研究主要集中于电絮凝集成工艺关键环节强化以及与集成工艺匹配的电絮凝设备结构优化,从而发挥组合工艺优势,提高系统处理能效。 相似文献
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电絮凝是一种用于处理不同类型饮用水和废水有效的电化学方法,近年来由于其高效地处理大量难处理污染物的能力而受到了广泛的关注。它成功地处理了有机和无机污染物且同时却很少产生副产物。在过去的十年里大量的研究致力于利用电絮凝处理饮用水和废水,从受污染的地下水到受高度污染的炼油厂废水都是其处理范围。本文首先介绍了电絮凝的基本原理及优缺点并回顾了近年来有关电絮凝用于水处理的文献,重点关注当前在饮用水和废水中的具体应用方面取得的成功以及未来应用的潜力。随后分析了影响电絮凝效率的几个因素,最后指出最近的电絮凝大多集中在去除特定污染物的研究上,而没有关注开发模型或工业应用,并且如果能降低电絮凝的成本,此方法将会有一个巨大的突破。 相似文献
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絮凝法是水处理技术中最重要的方法之一 ,本文介绍了近年絮凝剂和混凝法与其它方法相结合处理高色度印染废水技术的研究近况 ,并对其应用于印染废水脱色处理的机理加以讨论 相似文献
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首先介绍了电絮凝的作用机理以及电絮凝应用中的优缺点,然后介绍了电絮凝在重金属废水、含油废水、含磷废水3种典型废水中的具体应用和电絮凝技术的改进方向,最后对电絮凝技术未来的发展趋势进行了展望。 相似文献
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电镀集中区电镀废水的处理 总被引:6,自引:0,他引:6
废水处理是电镀集中区建设成功的关键.提出了搞好电镀集中区中电镀废水处理的一些前提与方法:首先要按清洁生产的要求对入驻集中区的企业进行审核,同时要认真剖析集中区内电镀废水的特点,运用循环经济的理念对不同电镀废水进行分类收集,采用最佳的废水处理技术,并根据"集散控制模式"进行处理,以达到回用废水及回收废水中有价值的重金属的理想效果.对各种先进的处理技术(包括化学法、膜分离技术、螯合沉淀法、HR型除铬机、生化法和高压脉冲电凝加硅藻土整合技术)进行了对比.推荐采用国外某公司的重金属捕捉剂. 相似文献
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This paper describes the principals of an approach to desalt sea water via exploitation of solar energy and membrane technology. The approach has been under test aimed at commercialization of the process in the near future. The process is a combination of diffusion across a salinity gradient established by evaporation and distillation in the form of a solar still-type arrangement. An osmotic membrane is used to separate the liquids of different solid concentration. In other words, the desalination devise is a hybrid of a solar still and osmosis unit which could operate in an economical and efficient utilization of solar energy.The marine osmotic solar still does not have the complexity of a solar powered reverse osmosis that draws power from an active solar collection system. Solar collectors and associated energy delivery systems, if used with an RO unit, will be rather expensive, and will occupy a large space. Conventional solar stills occupy large space and are rather inefficient in water production. The marine osmotic solar still is a stand alone solar energy system which is capable of providing distilled water of high purity. It can also be constructed offshore or on land near the seashore.The offshore scheme involves floating units in contact with the sea water. Each is capable of producing 150 gallons of water containing less than 50 ppm of dissolved solid. A conceptual design has been developed and described here of a pilot plant that produces 6,000 gpd.Material tests have been conducted in Singapore and Malysia to assure proper selection of structural material that are suitable for the highly corrosive environment. Measurements on flow rate have shown values of 15 to 20 gallones per square foot per day. The measurements have been conducted in Long Island Sound off Southport, Connecticut.In this paper, the actual design of the plant is described and results of material tests and simulation system analysis are reported. A comparison is made with conventional solar stills and solar powered membrane desalination processes. Results of an extensive marketing research are reported for various applications of the process. 相似文献
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Andrew Gadd Dan Ryan John Kavanagh Anne-Laure Beaurain Simon Luxem Geoff Barton 《Journal of Applied Electrochemistry》2010,40(8):1511-1517
Successful application of electrocoagulation technology requires a thorough evaluation of electrode behaviour. This study
is concerned with the treatment of fermentation wastewater, generated by molasses-fed biorefineries in large volumes and containing
high concentrations of biorecalcitrant, coloured organic melanoidins that form a highly dispersed colloid. The polarisation
behaviour, surface morphology and current efficiency of both hot rolled coil steel and 5005 aluminium electrodes were investigated.
The steel electrodes were found to be susceptible to aggressive anodic pitting which is attributed to the high chloride content
of the wastewater, while the aluminium exhibited anomalous corrosion of the anode and cathode. The redox potential of the
wastewater has a significant effect on Fe2+/Fe3+ speciation with steel electrodes and thus on the decolourising efficiency of electrocoagulation. The practical implications
of the corrosion characteristics are discussed. 相似文献