重金属元素物质流分析方法及案例分析

Methods of Substance Flow Analysis of Heavy Metal Elements and Case Study

  • 摘要: 通过物质流分析方法展示某种元素进出某区域/企业的流动模式,从而评估元素在产品生命周期的某一阶段对工艺、产品和环境产生的潜在影响。介绍了物质流分析方法的研究现状及进展,重点提出重金属元素物质流分析应用方法与步骤,并根据数量、环境、资源经济和影响能力等指标,定量分析和评估重金属元素在生产过程中对工艺、产品和环境产生的影响及结果。以砷元素为研究对象,通过2家涉砷企业的案例,分析生产过程中砷元素的分布、贮存与走向,在此基础上明确了砷污染控制的关键环节和防控方向,为企业实现重金属总量削减、环境改善及清洁生产目标提供依据。

     

    Abstract: Substance Flow Analysis (SFA) is used to show the flow pattern of an elementary substance as it enters and leaves a region or factory, which can be used to evaluate the impacts of the element on the production processes, products and environment during various processes in product life cycle. The progress and status of SFA methods were comprehensively reviewed, and the methods and procedure for analysis of heavy metals established. The main factors influencing the production processes, products and environment, such as the amount of heavy metal, environmental and economic indicators, were quantitatively analyzed and evaluated. Specifically, focusing on arsenic and with case studies in two enterprises, the distribution, occurrence and tendency of arsenic during the production process were analyzed. On this base, the key links and directions for arsenic control were identified, thus providing guidance for enterprises to realize total amount reduction of heavy metals, improve the environment and cleaner production.

     

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