在重金属土壤修复中使用创新的气旋技术进行细颗粒分离
Ruiqi Zhang1, Leyao Xing2, Yang Li2
1School of Architecture and Design, Harbin Institute of Technology, Harbin 150090, PR China; Key Laboratory of Cold Region Urban and Rural human Settlement Environment Science and Technology, Ministry of industry and Information Technology, Harbin 150090, PR China.
The Science of the total environment
|March 11, 2025
概括
一种新气旋设计精确地分离受重金属污染的微细土壤颗粒 (<20微米). 这种具有成本效益的方法显著提高了土壤修复效率,并减少了污染的土壤量.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 土壤科学 土壤科学
背景情况:
- 重金属土壤污染威胁着生态系统和人类健康.
- 传统的整治方法往往受到高成本和低效率的影响.
- 现有的分离技术对于微细污染颗粒 (<20微米) 缺乏精度.
研究的目的:
- 开发和验证一种新的小型气旋,以有效地分离受细颗粒污染的土壤.
- 为了优化气旋设计,专注于关键的<20微米颗粒大小范围.
- 为土壤整治提供一个具有成本效益和效率的解决方案.
主要方法:
- 使用雷诺兹应力模型 (RSM),流体体积 (VOF) 和离散相模型进行数值模拟.
- 研究了探器直径对流场和分类的影响.
- 在不同的条件下分析了粒子轨迹和分离性能.
主要成果:
- 优化气旋设计实现了<20微米颗粒分量的增加,从溢出时的76.3%增加到89.2%.
- 实现了高下流脱吸效率:铜 (Cu) 的88.7%, (Pb) 的84.5%, (Cd) 的80.4%.
- 在细颗粒分类和精确减少受污染的土壤体积方面取得了显著的改进.
结论:
- 开发的气旋提供了一种精确高效的方法来分离细微的,被重金属污染的土壤颗粒.
- 这种方法为传统的土壤修复技术提供了具有成本效益的替代方案.
- 这项研究为先进的环境恢复技术提供了一个有希望的基础.
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