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Risks in the Physical Recovery System of Waste Refrigerator Cabinets and the Controlling Measure

机译：废冰柜物理回收系统的风险及控制措施

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摘要

Environmental information in physical recovery system of waste refrigerator cabinets was provided in this paper. The system included closed shearing, activated carbon adsorption (ACA), air current separation, magnetic separation, and eddy current separation. Exposures of CFC-11, heavy metals, and noise emitted from the system were assessed. Abundant CFC-11 (>510 mg/m~3) was detected in crusher cavity. However, due to the employment of ACA, little CFC-11 (<9.5 mg/m~3) could be detected out the recovery system. Heavy metals were detected in the air of workshop (TSP: Cu ≤ 4.91 μg/m~3, Pb ≤ 3.17 μg/m~3, PM10: Cu ≤ 2.1 μg/m~3, Pb ≤ 1.3 μg/m~3). Assessment results indicated the concentrations of heavy metals in air were safe for workers. Copper (25.8 mg/kg) and lead (19.5 mg/kg) were found in ground dust of the workshop and the concentrations were safe for soils. Noise level (98.2 dB(A)) of crushing process could cause disease and hearing impairment to workers. For controlling noise, acoustic hood was designed to reduce the noise level to 69.7 dB(A).The above information was of assistance to the industrialization of physical process for recovering waste refrigerator cabinets on environmental protection. Meanwhile, it contributed to the knowledge of environmental information of physical technology for recovering e-waste.
机译：本文提供了废旧冰箱柜体物理回收系统中的环境信息。该系统包括封闭剪切，活性炭吸附（ACA），气流分离，磁分离和涡流分离。评估了系统暴露的CFC-11，重金属和噪声。在破碎腔中检测到大量的CFC-11（> 510 mg / m〜3）。但是，由于使用了ACA，回收系统中几乎检测不到CFC-11（<9.5 mg / m〜3）。在车间空气中检测到重金属（TSP：Cu≤4.91μg/ m〜3，Pb≤3.17μg/ m〜3，PM10：Cu≤2.1μg/ m〜3，Pb≤1.3μg/ m〜3） 。评估结果表明，空气中重金属的浓度对工人是安全的。在车间的地面粉尘中发现了铜（25.8 mg / kg）和铅（19.5 mg / kg），其浓度对土壤是安全的。压碎过程中的噪音水平（98.2 dB（A））可能导致工人患病和听力受损。为了控制噪音，设计了隔音罩，将噪音水平降低到69.7 dB（A）。以上信息有助于物理过程的工业化，以回收废旧冰箱柜，实现环保。同时，它有助于了解物理技术用于回收电子废物的环境信息。

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  • 来源
    《Environmental Science & Technology》 |2012年第24期|13386-13392|共7页
  • 作者

    Jujun Ruan; Mianqiang Xue; Zhenming Xu;

  • 作者单位

    School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China,School of Environmental Science and Engineering, Yangzhou University, 196 West Huayang Road, Yangzhou, Jiangsu 225000, People's Republic of China;

    School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China;

    School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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