使用烧结和铁制造联合技术处理含污泥:环境影响的风险降低策略
Shengxuan Fan1, Jinchao Wei2, Xiaorong Xu1
1School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China.
Journal of environmental management
|May 2, 2024
概括
这项研究开发了一种安全和环保的方法,通过在铁制造中共同处理含污泥 (CCS) 来处置. 该工艺有效地将有毒的Cr6降低到Cr3,并利用作为铁中宝贵的补充物.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 金工程 金工程 金工程
背景情况:
- 含污泥 (CCS) 由于其环境风险,造成了大量的处置挑战.
- 有效,安全和环保的CCS处置方法对于钢铁行业至关重要.
研究的目的:
- 制定CCS无害处置和资源利用战略.
- 通过烧结和铁制结合技术研究CCS的共同加工.
- 评估该方法的技术可行性,环境影响和资源回收.
主要方法:
- 进行了实验室规模的烧结实验.
- 进行了大规模的工业试验.
- 分析包括的晶相和价值状态转换,技术可行性,漏风险和污染物释放.
主要成果:
- 在高于1000°C的温度下,联合加工将超过99.99%的有毒Cr (VI) 降低到Cr (III).
- 工业试验表明,在添加0.5w‰的CCS时,对烧结物质或工厂运营没有不利影响.
- 烧结产品中总 (TCr) 的化度明显低于国家标准.
- 从CCS中至少有89.9%的迁移到铁中,作为一种有价值的补充物.
结论:
- 通过烧结和铁制造共同加工CCS是一种技术上可行的和环保的战略.
- 这种方法可以安全地处置CCS,并有效地利用钢铁行业的资源.
- 这项研究为可持续的CCS管理提供了一种新方法.
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