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简要介绍了超滤的工作原理、超滤膜的类型及超滤的特点,在此基础上重点综述了超滤技术在工业和生活废水处理中的应用,并对超滤技术的发展趋势进行了展望. 相似文献
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超滤技术是一种膜分离技术,在给水处理领域的应用已趋于成熟。随着环境污染问题日益严重化以及GB 5749—2006《生活饮用水卫生标准》对饮用水水质各项指标要求的严格化,传统水处理技术已经无法满足人们的需求,发展与推广以超滤技术为代表的新型水处理技术非常必要。通过对超滤技术概况及其工程应用实例的介绍,分析了超滤技术的发展瓶颈以及市场技术前景。 相似文献
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超滤作为一种新型废水处理技术,因其具有操作简单、节约能源、处理效率高等一系列优点,在制革废水、印染废水、造纸废水、石化含油废水以及重金属废水的处理中被广泛应用。本文对超滤技术的工作原理、超滤膜的种类以及超滤技术在各种类型废水处理中的应用和改进等问题作了详细的分析和系统的阐述。 相似文献
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最近几年超滤技术逐渐兴起,已经被广泛的应用在食品、纯水、医药行业当中,尤其是在纯水生产过程中,发挥了很大的作用。但是在纯水深度处理当中应用的还比较少,但是这一技术因为投资少、成本低,在纯水处理当中具有较好的应用前景。文章从纯水和超滤技术的基本概念入手,介绍超滤技术在纯水深度处理中的应用,以推动这项技术的应用创新。 相似文献
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用超滤法回收退浆废水中PVA作型煤粘结剂的试验研究 总被引:2,自引:0,他引:2
本文应用超滤方法对回收退浆废水中的PVA及用作型煤粘结剂进行了试验研究,探讨了影响超滤性能的因素、超滤运行过程中膜污染的处理方法等,结果表明,此方法技术可靠,操作方便,经济可行,具有很好的环境效益和经济效益. 相似文献
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结合工程实例介绍了复合式接触氧化-过滤沉淀工艺在医院污水处理中的应用。对接触氧化进行了改进,把原有接触氧化池分成若干单元池,通过控制曝气量,营造好氧、缺氧环境,以完成脱碳和硝化反硝化脱氮过程,并辅以过滤沉淀技术。工程实践证明,用该工艺处理完全能够达到相关排放标准的要求,是一种适宜于医院污水处理的经济、高效的污水处理技术。 相似文献
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《Journal of Cleaner Production》2006,14(5):536-538
In leather industry environmental concern has been growing since 1980s. Increasing levels of pollutant emissions have reached saturation point in spite of the conventional technology that highly industrial countries have adopted to keep them under control. This has started a technology revolution in several industries. These critical levels of pollution may have been caused by high industrial density, by high population density or by the use of old polluting technology. This situation has boosted emerging green technology which has begun to take up a larger portion of research work in the supply and raw materials in industries. Together with consumers growing awareness of the environment, this new technology has ended up affecting the consumer good industry. In leather industry due to the sector's bad public image regarding pollution more emphasis has been given to clean technologies and waste reduction. At this time nearly every part of the tanning process has several cleaner or environmentally friendlier alternatives. In leather industry to prevent damage to the hide and skin, bactericide is added during soaking process to kill the growth of microorganism. Bronopol is used as a bactericide. The active ingredient of bronopol is 2-bromo-2-nitropropane-1,3-diol. Here we have reported simple and cleaner technology of the bronopol by using nontoxic and non-hazardous raw materials and belongs to the modern concept of environmentally friendly low waste or nonwaste technology. Bronopol was characterized by IR and Mass spectral data. 相似文献
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近年我国电石法聚氯乙烯发展迅速,多项技术取得重大突破。氯碱企业经过多年探索和实践,已将干法乙炔、膜法+冷冻脱硝等先进工艺成功应用于生产实践中,并取得一定的经济和环境效益,本文对我国近期氯碱行业中主要环保工艺进行经济、技术比选。 相似文献
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针对电镀行业的特点,介绍了清洁生产技术,重点分析靖江市在推行电镀业清洁生产过程中的技术应用及取得的社会、经济及环境效益。 相似文献
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《Journal of Cleaner Production》2008,16(3):253-262
A framework has been introduced before to assess the sustainability performances of projects and technology developments in the process industry. The research summarised in this paper verified the completeness of the social dimension of that framework to evaluate operational initiatives. Furthermore, the relevance of the social dimension to the process industry has been validated. The perspectives of decision-makers in industry, i.e. a top-down approach, determined both the completeness and relevance. It was found that, to a limited extent, a smaller set of social assessment criteria might be defined for project and technology Life Cycle Management purposes. Also, it was concluded that quantitative social indicators are not practical in the process industry at present. Rather, checklists and guidelines should be applied during project and technology management, although this requires further investigation. Moreover, the perspectives of other stakeholders in technological systems should also be considered, from a bottom-up approach. 相似文献
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本文介绍了一种新型的过滤技术(表面过滤技术)在袋式除尘器中的应用及其特点,该技术的采用可减少除尘器的压力损失,提高滤袋的使用寿命和除尘效率. 相似文献
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作为大规模城市化的产物,废弃混凝土引发了一系列的资源和环境问题.废弃混凝土的再生利用技术已经日趋成熟,而市场化推广却遇到成本、制度等方面的一系列难题.引入循环经济的理念,对废弃混凝土与再生混凝土进行成本比较、对产业化的困难和条件进行了剖析,并从技术、产业、经济等各方面提出了政策建议,也可为其它资源再生产业的发展提供一定的借鉴. 相似文献