共查询到20条相似文献,搜索用时 31 毫秒
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废弃SCR催化剂回收利用项目建设格局的分析 总被引:1,自引:0,他引:1
阐述并分析了我国即将大量产生的烟气脱硝SCR废催化剂,及回收利用状况,列举出了适宜的SCR废催化剂回收利用项目建设格局模式。 相似文献
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通过在炼油厂放空系统上加装三组调节阀,将加热炉燃油喷嘴改为燃气喷嘴,使以前废弃烧掉的火炬气克分回收利用,即保护了环境,节约了能源,又提高了经济效益。 相似文献
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铬酸阳极化是铝合金加工过程中一种重要的、不可缺少的关键技术,而铝合金工件在铬酸阳极化加工之前必须经脱氧工艺从而提高铬酸阳极化质量。随着脱氧槽液使用时间的延长,Al~(3+)的浓度逐渐增加,当其浓度高于17 g/L时,槽液报废。槽液报废不仅造成资源的浪费,且报废废液含有大量的重金属离子,直接排放会对环境造成污染。因此,开发脱氧槽液的资源化利用技术具有十分重要的意义。本文采用离子交换法对含铬废槽液进行回收处理,确定了反应时间、反应温度、搅拌速率以及树脂用量等参数对阳离子吸附的影响规律。结果显示,最优工艺条件下铝离子吸附率可以达到60 %以上。用硝酸对树脂进行再生处理,效率可以达到88 %左右。此外,结合自主研发和制造的废液杂质离子含量在线分析与监测装置,开发了铝合金脱氧废液再生利用系统,保证铝合金表面处理工艺的连续性,实现了金属表面处理的清洁生产。 相似文献
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废荧光灯管中的有害物质如果处置不当,会对人体健康和环境造成危害.目前国内大部分废荧光灯管未得到无害化处置,主要在指定的法规、有效的政策以及完善的运营机制方面存在很多弊端,应引起社会各界的关注和政府部门的重视.本文结合国内外废荧光灯管回收处置现状,针对存在的问题,提出源头控制、分类收集、多渠道回收、建立资金及资金补贴机制... 相似文献
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Solid waste poses a serious problem to government agencies and people in third world cities. Recycling as a way of managing waste has received relatively little attention. This paper examines the role of waste scavengers in the waste recycling process. The preliminary findings reported here indicate that the waste scavenger could be incorporated formally into the recycling process. Using plastic waste as an example, it is demonstrated that such recycling is economically viable. 相似文献
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建材行业的发展为城市化建设提供了重要保障,在我国城市化快速发展、建筑材料需求旺盛的带动下,建材行业发展强劲,但大多属于高能耗高污染行业,加之城市拆迁改造产生大量建筑废弃物,环境压力十分巨大,必须加强建筑废弃物的环境管理。对建筑废弃物再利用、再循环以及减少建筑废弃物是解决建筑行业环境问题的重要方式,实施这些仍有很大的提升空间。本文回顾了近年来建筑废弃物再生利用方面的各种可行性技术。主要是针对沥青、砖、混凝土、金属、玻璃等几种物质再生利用的可行性技术进行综述,为未来建筑废弃物再生利用领域提供参考。 相似文献
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Alessandra DiGiacomo David W.-L. Wu Peter Lenkic Bud Fraser Jiaying Zhao Alan Kingstone 《Journal of Environmental Planning and Management》2018,61(2):309-331
Increasing volumes of solid waste, implicated in environmental pollution and health problems, are central to the current environmental crisis. In two randomized field experiments, we demonstrate that convenience dramatically boosts recycling and composting rates in multi-family dwellings and university residences. When compost bins were placed on each floor in a multi-family residence, instead of on the ground floor, composting rates increased by 70%, diverting 27 kilograms of compost from the landfill per unit per year. When recycling stations were placed just meters from suites in student residences, instead of in the basement, recycling increased by 147% (container), and 137% (paper), and composting increased by 139%, diverting 23, 22, and 14 kilograms of containers, paper, and compost, respectively, from the landfill per person per year. Simply making recycling and composting convenient can significantly increase waste diversion, and as such this single intervention has important implications for waste management and environmental policy. 相似文献
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宁阳县发展循环经济过程中所取得的初步成果,同时对当前存在的突出问题,提出了相应的对策和改进措施:制定促进循环经济发展的相关政策;构筑循环经济基本模式,推动建立生态工业园;建立循环经济发展的技术支撑体系;制定发展循环经济的长远规划;提高全民发展循环经济意识和公众参与水平. 相似文献
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The ability for small islands to meet sustainability goals is exacerbated by the costs of transporting goods on, and then, wastes off the islands. At small scales, recycling can be prohibitive and complicated by labor costs; the need to profitably recycle and manage solid waste output from tourism is complicated by scale and available technologies. A multi-year study documents the amount of solid waste generated on Great Exuma (Exuma), The Commonwealth of The Bahamas since 2010 with one year of benchmarking, then limited recycling of food waste generation by an all-inclusive resort, Sandals Emerald Bay (SEB). For the island of Exuma, the rapid increase in the rate of accumulation of solid waste associated with a large destination resort has led to an increase in pests such as rats and flies, along with an increased occurrence of fires associated with unburied solid waste. Solid waste has accumulated faster than the island solid waste management can absorb. SEB kitchen and hotel operations contributes an estimated 36% of all solid waste generated on the island, about 1752 t1 out of a total of 4841 t generated on the island in 2013 (exclusive of vegetation waste). Based on 4 weeks of benchmarking, 48.5% of all the waste coming out of the SEB resort is compostable, organic waste, but waste composition varies widely over time. Exuma Waste Management (EWM) and Recycle Exuma (RE), both privately-held Bahamian businesses, worked for one year (2012–2013) with SEB resort to implement a benchmarking and pilot recycling project to meet Earth Check green resort certification requirements. This paper outlines the costs and resources required for food waste recycling and some barriers to implementing more effective solid waste management for the tourism industry on small islands. 相似文献
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在分析废旧塑料再生利用工艺过程的基础上,确定了废塑料综合利用工艺的产污节点,并通过物流平衡和水平衡计算,得出了总的产排污量,为环境保护措施提供重要依据,以实现保护环境和资源合理再生利用。 相似文献
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