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上海市废弃混凝土处置企业现状调研

Research on Current Situation of Waste Concrete Disposal Enterprises in Shanghai
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摘要 通过问卷调查和实地调研等方式,探讨了上海市废弃混凝土处置企业的现状、存在的问题及意义。调研发现:(1)上海市2 5家废弃混凝土处置企业均为民营企业,主要分布在上海市的浦东新区、宝山区、闵行区和青浦区;(2)2023年,上海市从废弃混凝土中获得的再生产品约6 34.4万t,粒径大于5m m的再生粗骨料占再生产品的6 1.3%,浦东新区的再生产品产量占本市的5 1.7%;(3)处置工艺主要为初步破碎、二次破碎和筛分,部分企业会增加人工分选、除铁、水浮选、风选等工艺,提高再生产品的质量;(4)废弃混凝土循环利用的经济效益和生态环境效益显著,值得坚持长期发展。 Current situation,existing problems,and significance of waste concrete disposal enterprises in Shanghai were studied using questionnaire surveys and field investigations.Research has found that:(1)All 25 waste concrete disposal enterprises in Shanghai are private enterprises,mainly distributed in Pudong New Area,Baoshan District,Minhang District,and Qingpu District of Shanghai;(2)In 2023,Shanghai has obtained approximately 6.344 million tons of recycled products from waste concrete.Recycled coarse aggregates with a particle size greater than 5 mm account for 61.3%,while the production of recycled products in Pudong New Area accounts for 51.7%of the city's total;(3)The disposal process includes preliminary crushing,secondary crushing and screening.Some enterprises have employed additional processes such as manual sorting,iron removal,water flotation,and air separation to improve the quality of recycled products;(4)The economic and ecological benefits of recycling waste concrete are significant,and worthy of adhering to longterm development.
作者 桂志伟 卫智勇 张鸣 张俣 施亮 GUI Zhiwei;WEI Zhiyong;ZHANG Ming;ZHANG Yu;SHI Liang(Shanghai Urban Construction Materials Co.,Ltd.,Shanghai 200438,China;Shanghai Construction Materials Industry Market Management Station,Shanghai 200032,China)
出处 《上海建材》 2024年第5期6-9,共4页 Shanghai Building Materials
基金 隧道股份新材料科创中心内部课题:基于生命周期的新型材料碳排放核算研究(25-2023-0007)。
关键词 上海市 废弃混凝土 再生骨料 处置现状 Shanghai city waste concrete recycled aggregate disposal status
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