共查询到20条相似文献,搜索用时 125 毫秒
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本文在分析废线路板产生现状及成分组成的基础上,介绍了我国目前废线路板的主要处置工艺和回收利用现状,特别针对目前废旧线路板资源回收过程中对非金属材料重视不够的问题,提出了非金属材料回收利用的工艺设想,并对废线路板中非金属材料的利用前景进行了展望。 相似文献
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《中国环境管理干部学院学报》2018,(6)
对从锂离子电池阴极材料中浸出回收有价金属的研究进行综述。从浸出试剂、浸出条件及机理方面分析了酸浸法、氨浸法和生物浸出等浸出方法对废旧锂离子电池阴极材料中金属的浸出效果。在还原剂存在条件下,无机酸能高效浸出阴极材料中有价金属;氨浸能选择性浸出金属。总结了各分离纯化工艺的优缺点,萃取能专一性地回收目标金属,沉淀法因工艺简单而广泛应用。综上,只有充分考虑各工艺优缺点,才能实现废旧锂离子电池的无害化回收。 相似文献
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世界各国都在为了防止公害,保护水源,积极探索经济有效地从含各种有毒金属的矿山、冶金工业和化工工业等废水中脱除和回收金属的方法。浮选法是其中的一种方法,近10年来,逐步受到广泛的重视。虽然目前国内研究和报道还极少,但日本、美国、苏联、德国以及西班牙等国都有所研究,其中尤以日本研究较多,取得了较好效果,有的已用于生产。如用黄药浮选法处理含镉废水,自1971年以来已在日本宫古工厂生产中应用,日处理含镉废水2,000米~3,据称效果满意。我国不少地 相似文献
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微生物遗传学应用到环境工程领域 ,给传统的水污染控制技术和环境监测方法注入了新的活力。本文着重探讨了水处理中污泥驯化的微生物遗传学原理 ,同时评述了微生物遗传学在环境工程中的应用现状 ,分析了其中存在的问题 ,并指出了今后进一步发展的方向。 相似文献
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循环经济是黄河三角洲发展的必由之路 总被引:1,自引:0,他引:1
徐丽莉 《中国环境管理干部学院学报》2005,15(1):72-74
从黄河三角洲走新型工业化道路、可持续发展和应对入世挑战三个方面,论述了黄河三角洲发展循环经济的必要性和重要性,并提出了发展循环经济的四项措施和建议. 相似文献
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Present status of the recycling of waste electrical and electronic equipment in Korea 总被引:7,自引:1,他引:7
In Korea due to rapid economical growth followed by urbanisation, breakage of large traditional families into small nuclear families, continuous changes in equipment features and capabilities causes tremendous increase in sale of new electrical and electronic equipment (EEE) and decrease in sale of used EEE. Subsequently, the ever-increasing quantity of waste electrical and electronic equipment (WEEE) has become a serious social problem and threat to the environment. Therefore, the gradual increase in the generation of WEEE intensifies the interest for recycling to conserve the resources and protect the environment. In view of the above, a review has been made related to the present status of the recycling of waste electrical and electronic equipment in Korea. This paper describes the present status of generation and recycling of waste electrical and electronic equipment, namely TVs, refrigerators, washing machines, air conditioners, personal computers and mobile phones in Korea. The commercial processes and the status of developing new technologies for the recycling of metallic values from waste printed circuit boards (PCBs) is also described briefly. Since 1998, three recycling centers are in full operation to recycle WEEE such as refrigerators, washing machines and air conditioners, having the total capacity of 880,000 units/year. All waste TVs are recently recycled on commission basis by several private recycling plants. The recycling of waste personal computers and mobile phones is insignificant in comparison with the amount of estimated obsolete those. Korea has adopted and enforced the extended producer responsibility (EPR) system. Korea is making consistent efforts to improve the recycling rate to the standards indicated in the EU directives for WEEE. Especially environmentally friendly and energy-saving technologies are being developed to recycle metal values from PCBs of WEEE. 相似文献
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生态工业园内的水资源循环模型 总被引:2,自引:0,他引:2
目前,工业生态学在我国有了很大程度的发展,它已成为环境管理和规划领域研究的热点问题。本文简要介绍生态工业园的概念和理论后,重点阐述了生态工业园区内水资源循环模型的构建,并以青白江工业集中发展区为例,建立工业园区内的水资源循环再生模型,以期对我国的生态工业园区的水资源规划和循环再生利用提供依据。 相似文献
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This report summarizes current developments in the United States and 18 other industrial countries regarding packaging waste. It presents available data concerning the types, amounts, and methods of managing such waste and provides information concerning the policies established or under consideration to reduce the amount of such waste being disposed. The countries discussed are all members of the Organisation for Economic Co-operation and Development (OECD).In recent years, waste disposal capacity has become more scarce in most OECD countries. As a result, waste management policies have focused on efforts to reduce and recycle major components of the waste stream. Packaging represents about one-third of municipal solid waste in many countries. Because of this, measures to reduce the amount and toxicity of packaging and to encourage its recycling are currently being considered in at least 18 OECD countries. In addition, the EC and the Nordic Council are developing programs to address packaging on a regional basis.The report is divided into four main sections. Section I summarizes available information for the OECD countries. The second section discusses waste generation and recycling rates for six types of packaging material: paper, glass, metal, plastic, wood, and composites. The third section discusses key questions raised by the information presented in the report. The fourth briefly discusses packaging waste issues facing the Congress.In general, the report finds, other countries use less packaging than the United States, recycle more of it, and are considering policy measures stronger than the measures generally being considered in America. As noted in detail, other countries have adopted or are developing requirements that:
- • • set mandatory requirements for packaging waste reduction;
- • • require reusable or refillable packaging;
- • • impose taxes to discourage single-use packages;
- • • prohibit the use of non-recyclable packaging,
- • • prohibit or limit disposal of packaging, and
- • • require manufacturers of packaging materials to collect and recycle post-consumer waste.