摘要 为科学应对废液晶显示器(LCD)设备回收管理挑战,研究采用GM(1,1)及Weibull分布函数模型对中国3大类典型LCD内主要有毒有害物质存量及其动态报废量进行理论分析。结果表明:(1)2003—2025年中国国内台式电脑显示器、笔记本电脑、液晶电视的总消费量约74.6亿台,其中台式电脑显示器、笔记本电脑、液晶电视分别为42.7亿、10.0亿、21.9亿台。(2)至2025年,中国国内市场消费的3大类典型LCD中所含液晶、重金属、溴系阻燃剂等有毒有害物质总存量将达32658.5 t,其中液晶和As最高,总存量将分别为10914.4、10535.8 t。(3)自2010年起中国LCD报废量逐年增加,至2025年LCD的年报废量将达4.8亿台,其所含各主要有毒有害物质的年报废量为1782.5 t。(4)当前回收模式与处理水平下,废LCD回收处理工艺中拆解、LCD面板破碎、有机污染物去除、铟(In)回收与塑料外壳再生等处理流程是污染物释放的主要环节。 To scientifically cope with the management and recycling challenges of waste liquid crystal display(LCD)equipment,stocks of the hazardous substance in typical LCD equipment and its flow to waste stream were estimated with the GM(1,1)model and Weibull distribution model.Results showed that:(1)there would be up to 7.46 billion sets of LCD desktop monitors,notebooks and LCD TVs sold in the Chinese market from 2003 to 2025,in which the consumption amount of LCD desktop monitors,notebooks and LCD TVs were 4.27 billion,1.00 billion and 2.19 billion respectively.(2)The stocks of liquid crystals,heavy metals and brominated flame retardant in the typical LCD equipment of desktop monitors,notebooks and LCD TVs would be 32658.5 tons till 2025,with liquid crystals and As accounting for the largest amount which were 10914.4 tons and 10535.8 tons respectively.(3)The annual amount of discarded LCD equipment increased since 2010 and it would reach up to 0.48 billion sets in 2025,in which 1782.5 tons of hazardous and toxic substance were stocked.(4)Under the current recycling condition,the hazardous substance contained in discarded LCD equipment would release in the deep recycling process of dismantling,LCD panel crushing,combustion/pyrolysis of organics,In recovery and plastic recycling.
出处 《环境污染与防治》 CAS CSCD 北大核心 2021年第4期445-452,共8页 Environmental Pollution & Control
基金 国家自然科学基金资助项目(No.21707088) 上海市自然科学基金资助项目(No.16ZR1412500) 上海市Ⅱ类高原学科环境科学与工程(资源循环科学与工程)建设项目 上海第二工业大学校重点学科建设项目(No.XXKZD1602)。
关键词 液晶显示器 污染物存量 动态报废量 污染流向 liquid crystal display stocks of hazardous substance annual discarded amount pollutant flow
