Wu Fenghui, Ren Yuanchaun, Qu Guangfei, Liu Shan, Chen Bangjin, Liu Xinxin, Zhao Chenyang, Li Junyan
Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Yunnan, Kunming, 650500, China; National Regional Engineering Research Center-NCW, Kunming, 650500, Yunnan, China.
Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Yunnan, Kunming, 650500, China; National Regional Engineering Research Center-NCW, Kunming, 650500, Yunnan, China.
J Environ Manage. 2022 Jul 1;313:114957. doi: 10.1016/j.jenvman.2022.114957. Epub 2022 Apr 4.
Phosphogypsum is one of the hottest issues in the field of environmental solid waste treatment, with complex and changeable composition. Meanwhile, phosphogypsum contains a large number of impurities, thus leading to the low resource utilization rate, and it can only be stockpiled in large quantities. Phosphogypsum occupies a lot of land and poses a serious pollution threat to the ecological environment. This paper mainly summarizes the existing pretreatment and resource utilization technology of phosphogypsum. The pretreatment mainly includes dry method and wet method. The resource utilization technology mainly includes building materials, chemical raw materials, agriculture, environmental functional materials, filling materials, carbon sequestration and rare and precious extraction. Although there are many aspects of resource utilization of phosphogypsum, the existing technology is far from being able to consume a large amount of accumulated and generated phosphogypsum. Through the analysis, the comparison and mechanism analysis of the existing multifaceted and multi-level resource treatment technologies of phosphogypsum, the four promising resource utilization directions of phosphogypsum are put forward, mainly including prefabricated building materials, eco-friendly materials and soil materials, and new green functional materials and chemical fillers. Moreover, this paper summarizes the research basis of multi field and all-round treatment and disposal of phosphogypsum, which reduces repeated researches and development, as well as the treatment cost of phosphogypsum. This paper could provide a feasible research direction for the resource treatment technology of phosphogypsum in the future, so as to improve the consumption of phosphogypsum and reduce environmental risks.
磷石膏是环境固体废物处理领域的热点问题之一，其成分复杂多变。同时，磷石膏含有大量杂质，导致资源利用率低，只能大量堆放。磷石膏占用大量土地，对生态环境构成严重污染威胁。本文主要总结了磷石膏现有的预处理及资源利用技术。预处理主要包括干法和湿法。资源利用技术主要包括建筑材料、化工原料、农业、环境功能材料、填充材料、碳封存及稀有珍贵元素提取等。虽然磷石膏资源利用有诸多方面，但现有技术远远无法消纳大量累积和产生的磷石膏。通过对磷石膏现有多层面、多水平资源处理技术的分析、比较及机理分析，提出了磷石膏四个具有前景的资源利用方向，主要包括预制建筑材料、生态友好型材料和土壤材料，以及新型绿色功能材料和化学填料。此外，本文总结了磷石膏多领域、全方位处理处置的研究基础，减少了重复研发，降低了磷石膏的处理成本。本文可为未来磷石膏资源处理技术提供可行的研究方向，从而提高磷石膏的消纳量，降低环境风险。
