基于资源节约的废旧轮胎回收利用研究

在资源和环境问题日益严峻的今天,将资源可持续利用思想引入废旧轮胎处置中,不仅能节省我国有限的橡胶资源,还能加快汽车和轮胎产业的发展井带动相关行业,必定能使环境效益和经济效益达到双赢。     

关于推进资源循环利用基地建设的指导意见

正发改办环资[2017]1778号为落实"十三五"规划《纲要》和《国务院关于深入推进新型城镇化建设的若干意见》,大力发展循环经济,加快资源循环利用基地建设,推进城市公共基础设施一体化,促进垃圾分类和资源循环利用,推动新型城市发展,提出如下意见。一、建设资源循环利用基地的重要意义资源循环利用基地是对废钢铁、废有色金属、废旧轮胎、建筑垃圾、餐厨废弃物、园林废弃物、废旧纺织品、废塑料、废润滑油、废纸、快递包装物、废玻璃、生活垃圾、城市污泥等城市废弃物进行分类利用和集中处置的场所。基地与城市垃圾     

节能与综合利用司开展轮胎循环利用专题调研

正2020年4月14—17日,工业和信息化部节能与综合利用司高云虎司长带队赴北京市吉通轮胎翻修利用有限公司和北京化工大学,开展轮胎循环利用专题调研,深入了解废旧轮胎综合利用发展情况。北京市经济和信息化局、中国轮胎循环利用协会等单位有关负责同志参加调研活动。     

无剥离微负压废旧轮胎热解技术

20 0 1年全世界轮胎产量达 8× 10 8只 ,我国占10 %左右 ,约为 7× 10 7只。目前我国废旧轮胎的数量巨大 ,并且还会随着汽车工业和公路交通业的快速发展而同步递增。废旧轮胎的处理与利用正日益成为我国环境保护和资源综合利用的一个突出问题。废旧轮胎的处理方法主要包括热解、剥离再生、翻新、制胶粉、填埋、焚烧等。再生橡胶在 70年代曾是处理废旧轮胎的重要方式 ,但由于再生橡胶和其他原形改制方式 (制胶粉、翻新、作船弦防护等 )都不是终极处理方式 ,其制品经长时间使用报废后仍是需处理的废橡胶制品。另外 ,这些处理方法由于工艺技术…     

发达国家废旧轮胎回收利用经验及借鉴

介绍了发达国家回收处理和再生利用废旧轮胎的管理和技术,提出我国应借鉴发达国家经验,从技术、政策、法规等方面加强废旧轮胎的再利用工作.     

废旧轮胎热裂解残渣资源化利用工艺研究进展

废旧轮胎的处理在交通与环保领域一直是世界重大课题。我国作为轮胎生产及使用大国,对废旧轮胎热裂解残渣资源化利用,研究从中回收可用于轮胎橡胶增强剂的炭黑工艺,一直备受关注。分析国内外废旧轮胎热裂解残渣提纯技术研究进展,总结环境友好及利润率高的几种工艺,通过分析我国废旧轮胎处理产业的发展现况,从环保方面对老旧工艺提出了建议。     

废旧轮胎回收利用技术及其应用前景

对废旧轮胎的各种回收利用技术进行了介绍，废旧轮胎的回收利用方法很多，其中有直接利用方法，包括翻新、用于建筑材料、原形改制等；还有间接利用方法，包括生产再生胶、胶粉、热利用、热裂解等。在此基础上，对我国废旧轮胎回收利用方面存在的问题进行了分析并提出了相应的发展建议。     

废旧纺织品的回收及再利用

随着人民生活水平的不断提高,居民家中淘汰的各类废旧纺织品的产生量快速增加。废旧纺织品作为一种可再生资源,其复杂性影响了回收后的资源化利用。废旧纺织品分类回收和再生纤维加工,提高了废旧纺织品回收及再利用水平,有助于弥补我国纺织原材料供给不足,实现织物资源的循环利用。     

工程院为废旧化纤利用开方

正中国工程院咨询研究项目——废旧化纤纺织品资源再生循环技术发展战略研究成果近日在北京发布。在全面深度梳理比较国内外废旧纺织品资源再生循环现状及发展趋势的基础上,该项目提出了我国废旧化纤纺织品资源再生循环的重点任务,明确了全产业链技术体系的发展方向。据中国工程院院士蒋士成介绍,为促进我国化纤再生行业的良性发展和全面升级,中国工程院于2017年设立废旧化     

固废资源化重大专项成果落地 双星废旧轮胎实现零污染全利用

<正>2019年3月20日,由中国轮胎循环利用协会主办的2019年全国热裂解行业高端技术发布研讨会暨科技部固废资源化重大专项成果发布会在河南省汝南县举行。会上正式发布了科技部固废资源化重大专项成果——废旧橡胶(轮胎)绿色生态循环利用示范工厂方案。     

Comparing urban solid waste recycling from the viewpoint of urban metabolism based on physical input-output model: A case of Suzhou in China

Investigating impacts of urban solid waste recycling on urban metabolism contributes to sustainable urban solid waste management and urban sustainability. Using a physical input-output model and scenario analysis, urban metabolism of Suzhou in 2015 is predicted and impacts of four categories of solid waste recycling on urban metabolism are illustrated: scrap tire recycling, food waste recycling, fly ash recycling and sludge recycling. Sludge recycling has positive effects on reducing all material flows. Thus, sludge recycling for biogas is regarded as an accepted method. Moreover, technical levels of scrap tire recycling and food waste recycling should be improved to produce positive effects on reducing more material flows. Fly ash recycling for cement production has negative effects on reducing all material flows except solid wastes. Thus, other fly ash utilization methods should be exploited. In addition, the utilization and treatment of secondary wastes from food waste recycling and sludge recycling should be concerned.     

Experimental study of rubber tire aggregates effect on compressive and dynamic load-bearing properties of cylindrical concrete specimens

Sustainable development has become a major focus for engineers and planners as part of their collective efforts in finding, developing and integrating environmental-friendly solutions for material recycling and waste management into design and construction of civil engineering infrastructure. In the past three decades, there has been an increase in recycling and application of waste materials into the concrete to decrease costs and improve material properties of the concrete. Significant growth in automobile manufacturing industry and increased rubber tire supply for vehicles suggested the application of waste tire particles as concrete aggregates to minimize the ecological footprint of the rubber tire waste due to its recycling process difficulties. In this paper, the effect of rubber tire particles on compressive and dynamic strength of concrete specimens with different particle percentiles was tested on more than 55 cylindrical specimens. To achieve the optimal mix design properties of rubber tire concrete specimens, both fine and coarse aggregates got replaced by fine and coarse rubber particles. Introduction of rubber tire particles as coarse and fine aggregate reduces the brittleness of the concrete and provides more flexible aggregate bonding which ultimately improves the dynamic resistance of the concrete. It increases the concrete workability and provides environmental-friendly and cost-effective solutions in using recycled materials for concrete construction applications.     

Influence of different processing techniques on the mechanical properties of used tires in embankment construction

Use of the processed used tires in embankment construction is becoming an accepted way of beneficially recycling scrap tires due to shortages of natural mineral resources and increasing waste disposal costs. Using these used tires in construction requires an awareness of the properties and the limitations associated with their use. The main objective of this paper is to assess the different processing techniques on the mechanical properties of used tires–sand mixtures to improve the engineering properties of the available soil. In the first part, a literature study on the mechanical properties of the processed used tires such as tire shreds, tire chips, tire buffings and their mixtures with sand are summarized. In the second part, large-scale direct shear tests are performed to evaluate shear strength of tire crumb–sand mixtures where information is not readily available in the literature. The test results with tire crumb were compared with the other processed used tire–sand mixtures. Sand–used tire mixtures have higher shear strength than that of the sand alone and the shear strength parameters depend on the processing conditions of used tires. Three factors are found to significantly affect the mechanical properties: normal stress, processing techniques, and the used tire content.     

小型废弃电器电子产品精细拆解与资源化利用初步探讨

随着工业化进程和社会生活的丰富,各种小型电器电子产品不断问世,相关废弃产品的拆解和资源化利用已经成为资源综合利用的重要课题.基于其分类与回收利用现状,就国内精细拆解与资源化利用问题进行了探讨,并以废弃手机为例,就处理原则、工艺流程设置和高值利用方法提出了一些建议.     

中国再生资源产业管理政策体系分析

中国再生资源产业发展离不开国家政策的支持。归类梳理和分析相关政策有利于把握现有政策体系的内在联系,实现整体的政策改进。提出中国现有关于再生资源产业的管理政策可以归纳为5个方面:再生资源回收和利用综合性管理、再生资源回收体系专门管理、环境保护领域固体废弃物管理、资源综合利用和废物进口管理。在此基础上,揭示相关政策间的层次关系和内在联系,并加以综合评价。     

Application of system dynamics modeling for evaluation of different recycling scenarios in Singapore

The influence of socioeconomic factors, such as population and rapid economic growth, and the change of consumption and living patterns make waste management in Singapore, a complex issue. Due to limited land and resources, the solid waste management scheme requires a comprehensive approach. Therefore, system dynamics (SD) modeling was applied to assess alternative strategies for solid waste management by interconnecting landfill capacity and recycling efficiency with reference to the projection on waste generation. Nine different scenarios were investigated to identify the best approach to maintain environmental sustainability without inhibiting the economic growth. Four subsystems (i.e., population, economy, waste recycling, and waste disposal) have been incorporated into the SD model to broaden the effectiveness of the waste management system. Research findings revealed that a high economic pattern and a high recycling rate are recommended to satisfy the requirements for economic growth and environmental sustainability while extending landfill capacity for waste disposal. Even though the balance of expenditure could be increased by the high recycling rate, it meets the need for long-term incineration and landfill planning.     

天津市餐厨垃圾回收现状与对策

餐厨垃圾是一种具有较高再生利用价值的资源,但是处置不当会给社会造成危害。天津市餐厨垃圾的回收包括规范化的再生资源回收企业回收、以养猪和炼制餐厨再生食用油为目的的非法回收商贩回收、城市普通生活垃圾收集处理系统回收等三种形式。以源头单独集中、清洁化单独收运、无害化处理和资源化利用为指导原则,开展城市餐厨垃圾的规范化回收符合发展循环经济的根本要求。从加强宣传教育、加大食用油监管力度、健全行政监管体系、完善餐厨垃圾规范化收集网络等角度,提出推动天津市餐厨垃圾回收规范化发展的对策。     

Closed-loop recycling of construction and demolition waste in Germany in view of stricter environmental threshold values.

Recycling of construction and demolition waste contributes decisively to the saving of natural mineral resources. In Germany, processed mineral construction and demolition waste from structural engineering is used nearly exclusively in civil engineering (earthwork and road construction sector) as open-loop recycling. Due to the planned stricter limit values for the protection of soil and water, however, this recycling path in civil engineering may no longer be applicable in the future. According to some new guidelines and standards adopted recently, recycled aggregates may also be used for concrete production in the structural engineering sector (closed-loop recycling). Wastes from the structural engineering sector can thus be kept in a closed cycle, and their disposal on a landfill can be avoided. The present report focuses on the determination of maximum waste volumes that may be handled by this new recycling option. Potential adverse effects on the saving of resources and climate protection have been analysed. For this purpose, materials flow analysis and ecobalancing methods have been used.     

Benchmarking in municipal solid waste recycling

The paper presents an analysis of the factors influencing the recycling potential of municipalities in Israel, including population size and density, geographic location, current waste levels, and current waste management system. We employ a standard regression analysis in order to develop an econometric model to predict where potential for economically efficient recycling is highest. By applying this model to readily available data, it is possible to predict with close to 90% accuracy whether or not recycling will be economically efficient in any given municipality. Government agencies working to promote advanced waste management solutions have at their disposal only limited resources and budget, and so must concentrate their efforts where they will be most effective. The paper thus provides policy-makers with a powerful tool to help direct their efforts to promote recycling at those municipalities where it is indeed optimal.