基于SEFA的造纸地块污染修复方案环境足迹案例研究

王贵云; 桑春晖; 肖萌; 聂雨欣; 杨欣桐; 张红振; 李香兰

doi:10.13205/j.hjgc.202501009

基于SEFA的造纸地块污染修复方案环境足迹案例研究

doi: 10.13205/j.hjgc.202501009

1. 北京师范大学地理科学学部全球变化与地球系统科学研究院, 北京 100875;
2. 生态环境部环境规划院土壤保护与景观设计中心, 北京 100012

基金项目:

国家重点研发计划项目(2022YFC3703301)

详细信息

作者简介:
王贵云(1995-),女,博士研究生,主要研究方向为污染场地和土壤标准研究。guiyun225@qq.com

通讯作者:
李香兰(1980-),女,副教授,主要研究方向为污染场地绿色修复。xlli@bnu.edu.cn

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出版历程
- 收稿日期: 2024-03-29
- 录用日期: 2024-09-13
- 修回日期: 2024-08-24
- 网络出版日期: 2025-03-21
- 刊出日期: 2025-03-21

Environmental footprint analysis for contaminated soil remediation in paper mill based on SEFA tool

1. College of Global Change and Earth System Science, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China;
2. Center for Soil Protection and Landscape Design, Chinese Academy of Environmental Planning, Beijing 100012, China

摘要

摘要: 造纸工业在生产过程中产生大量含有机污染物和重金属的废水和污泥,导致造纸厂及周边地块的土壤修复工程难度增加。因此,环境影响评价有助于降低修复过程中的环境足迹。以某造纸污染地块为例,采用生命周期评价方法对地块的修复过程进行环境足迹分析,探索绿色可持续的土壤修复方法,以期为我国造纸行业的土壤污染治理提供科学的理论支持和实践指导。采用SEFA工具计算3种备选方案的环境足迹,分别为:异位化学氧化与水泥窑协同处置(方案1),水泥窑协同处置(方案2),异位热脱附与土壤淋洗(方案3)。结果表明:材料消耗量、能源消耗总量、温室气体排放总量、大气污染物排放总量均表现为方案3<方案2<方案1;各修复技术的单方土碳排放量为0.05~0.66 t CO₂e/m³,蒙特卡罗不确定性分析也表明模拟结果合理,说明SEFA工具在修复方案的评估框架和评估结果均适用于造纸行业的土壤污染修复,对复杂的有机物和重金属污染地块的修复提供环境足迹定量计算具有一定的潜力和优势。
- 碳中和 /
- 异位化学氧化 /
- 水泥窑协同处置 /
- 异位热脱附 /
- 土壤淋洗
Abstract: The paper industry generates a large amount of wastewater and sludge containing organic pollutants and heavy metals during its production process, leading to serious soil environmental pollution in the paper mill and its surrounding areas, which makes the soil remediation project for the paper mills and their surrounding areas more difficult. Consequently, there is an urgent need for environmental impact assessment to minimize the ecological footprint of the remediation process. Taking a contaminated site in a paper mill as an example, this study applied a life cycle assessment (LCA) approach to analyze the environmental footprint of soil remediation efforts, aiming to explore a sustainable and environmentally friendly method for soil restoration. In this study, the SEFA (sustainable environmental footprint assessment) tool was used to calculate the environmental footprints of three alternative remediation scenarios: 1) ex-situ chemical oxidation combined with cement kiln co-processing (Scenario 1), 2) cement kiln co-processing alone (Scenario 2), and 3) ex-situ thermal desorption combined with soil washing (Scenario 3). The SEFA tool is developed by the US Environmental Protection Agency, covering five core elements of GSR, and quantifying energy consumption and carbon footprint generated by remediation of contaminated sites. The results showed that regarding material consumption, total energy consumption, greenhouse gas emissions, and air pollutant emissions, the environmental impacts followed the order of Scenario 3 < Scenario 2 < Scenario 1. The carbon emissions from each remediation technique ranged from 0.05 to 0.66 t CO₂ e/m³. Additionally, Monte Carlo uncertainty analysis confirmed the robustness and reliability of the simulation results. Under the national background of the Dual-Carbon policy, China’s paper industry is constantly optimizing its industrial layout and building a low-carbon development cluster. These findings suggest that the SEFA tool is highly applicable for evaluating soil remediation options in the paper industry. It provides a framework for assessing both the environmental impact and the feasibility of different remediation strategies, demonstrating potential advantages for complex sites contaminated with organic pollutants and heavy metals. This paper can serve as a scientific foundation for decision-making and contribute to improving the environmental performance of soil remediation in the paper industry, helping to guide future efforts to address pollution in the sector.
- carbon neutrality /
- ex-situ chemical oxidation /
- co-processing in cement kilns /
- ex-situ thermal desorption /
- soil leaching

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参考文献(41)

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