赤泥固废土壤化修复研究进展

赤泥产量大、碱性强、综合利用难度大,赤泥处置问题严重限制了氧化铝行业的可持续发展。为减少环境污染和提高资源利用率,赤泥的综合利用得到广泛研究,但是赤泥的无害化处置仍然是亟待解决的问题。土壤化是实现赤泥大宗消纳的一种可行性方法,在综合赤泥土壤化研究现状的基础上,分析了赤泥土壤化处置过程中堆场演化、碱性调控、土壤化调控、植物修复等研究方向存在的问题,并对赤泥土壤化研究方向提出了建议,为赤泥生态修复和无害化处置提供理论和技术指导。

Research Progress on Soilification of Red Mud Solid Waste

Due to massive production, high alkalinity and intractable utilization, the sustainable development of alumina industry is significantly limited by disposal of red mud. In order to reduce environmental pollution and improve resource utilization, numerous researches have been carried out on comprehensive utilization of red mud. However, cleaner utilization of red mud is still an urgent issue to be solved. Soilification is a feasible method for massive consumption of red mud. This review surveys current status, and discusses future research directions from the aspects of evolution of red mud dam, alkaline regulation, soil regulation and phytoremediation. Theoretical and technical guidance for cleaner disposal and phytoremediation of red mud are provided.