Potential analysis of cleaner production emission reduction of particulate pollution in foundry industry: taking M City as an example
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摘要: 颗粒物是铸造业的主要大气污染物,属于国家重点控制的大气污染物之一。以铸造业为研究对象,分析了铸造企业各生产工序颗粒物产排特征,并以M市铸造业为例,对颗粒物排放现状以及相关产业政策进行了分析和梳理,总结出M市铸造业清洁生产减排潜力。结合“自底向上”污染减排模型和《第二次全国污染源普查产排污核算系数手册(试用版)》构建出铸造业颗粒物污染减排模型,并在此基础上,对A铸造公司在“十四五”期间颗粒物污染减排潜力进行了预测分析。结果表明:与基准年2019年相比,2025年A铸造公司制芯、造型/浇注、砂处理工序排放颗粒物的总量预计可削减3 807.23 kg,使企业对清洁生产技术的推广和普及所带来的减排效果有了直观的认识。同时,提出了铸造业颗粒物污染防治五方面的措施,为“十四五”期间铸造业污染减排的发展规划提供参考。Abstract: Particulate matter is the main air pollutant in foundry industry and one of the key air pollutants controlled by the state. Taking the foundry industry as the research object, the characteristics of generation and emission of particles in various production processes of foundry enterprises were analyzed. Taking the foundry industry in M City, as an example, the emission status of particulate matter and related industrial policies were analyzed and summarized, and the potential of cleaner production emission reduction in the foundry industry of M City was summarized.Combined with the “bottom-up” pollution reduction model and Second National Survey of Pollution Sources Industrial Pollution Coefficient Manual, a model of particulate matter pollution reduction in foundry industry was constructed and, on this basis, the potential of particulate matter pollution reduction in A foundry company during the “14th Five-Year Plan” period was predicted and analyzed.The results showed that compared with the baseline year 2019, the total amount of particulate matter emitted by core making, molding/pouring and sand treatment processes of A foundry company in 2025 is expected to be reduced by 3 807.23 kg, which made the enterprise had a direct understanding of the emission reduction effect brought by the promotion and popularization of cleaner production technology. At the same time, five measures were put forward to prevent and control particulate pollution in foundry industry, which could provide reference for the development planning of pollution reduction in foundry industry during the “14th Five-Year Plan” period.
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