School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China.
Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing, 100012, China.
Environ Sci Pollut Res Int. 2022 Jun;29(26):39077-39087. doi: 10.1007/s11356-021-18346-w. Epub 2022 Jan 31.
Recently, enterprises and industries associated with intense pollution have been relocated in China, leaving behind abandoned polluted sites. Consequently, stabilization has attracted unprecedented attention and rapid development. However, too much focus has been placed on practicality and short-term effectiveness, whereas long-term effectiveness and sustainability concerns have been overlooked. The present study reports the findings of a national survey administered to stakeholders involved in soil stabilization projects over a decade to determine the pollution characteristics of industrial sites and current utilization status of stabilization technologies in China. One-hundred and fifty soil stabilization projects surveyed revealed that among 29% of chemical industry remained sites, 96.7% of the sites were heavily polluted with heavy metals and metalloids, mainly in the forms of lead, arsenic, and chromium. Our analyses of soil reuse methods revealed that landfilling was the primary strategy of soil disposal following stabilization and remediation. In addition, the reuse of treated soils is preferred to landfill waste treatment. Therefore, from the perspective of economy and reducing landfill loads, environmental management measures should be adopted based on the development objectives of different regions to avoid the failure of stabilization treatments and reapplication and over-repair problems, with the aim of establishing an evaluation method of "site-specific, analysis-specific" evaluation method.
最近，中国已经将一些高污染的企业和行业转移出去，留下了废弃的污染场地。因此，污染场地稳定化修复技术得到了前所未有的关注和快速发展。然而，人们过于关注实用性和短期效果，而忽视了长期效果和可持续性。本研究报告了一项针对中国土壤稳定化修复项目利益相关者进行的全国性调查结果，该调查旨在确定工业场地的污染特征和稳定化技术的当前利用情况。对 150 个土壤稳定化修复项目进行了调查，结果表明，在 29%的化学工业遗留场地中，96.7%的场地受到重金属和类金属的严重污染，主要以铅、砷和铬的形式存在。通过对土壤再利用方法的分析发现，稳定化和修复后，土地填埋是土壤处置的主要策略。此外，处理后的土壤的再利用优于垃圾填埋处理。因此，从经济和减少垃圾填埋场负荷的角度来看，应根据不同地区的发展目标采取环境管理措施，以避免稳定化处理和再应用以及过度修复问题的失败，旨在建立一种“因地制宜、因分析而异”的评价方法。
