As a clean, fast, and efficient strategy for chemical synthesis, mechanochemical ball-milling approach has been developed promisingly to prepare functional materials for water treatment. Based on our previous findings that both the accelerated corrosion and facilitated electron-transfer are crucial for contaminants removal by zerovalent iron (ZVI), ball-milled FeCl₂ and ZVI (Fe²⁺-ZVI^bm) was synthesized for metal(loid)s sequestration in this study. The results showed the complete removal of Se(VI) was obtained by Fe²⁺-ZVI^bm and there was no residual Fe²⁺ in the solution after Se(VI) removal. Compared to other enhanced-ZVI techniques, Fe²⁺-ZVI^bm showed evident superiorities for Se(VI) removal in many aspects, including removal rate, removal capacity, utilization ratio of reductants, electron efficiency of reductants, specific removal capacity, adaptability of initial pH, and operation cost. The influence of storage condition on the performance of Fe²⁺-ZVI^bm was examined and the performance of Fe²⁺-ZVI^bm for Se(VI) removal could be ensured when it was sealed-stored in air. The rates and capacities of various metal(loid)s (V(V), Cr(VI), Cu(II)-EDTA, As(III), As(V), Se(IV), Sb(III)-tartrate, Sb(V), and U(VI)) removal by Fe²⁺-ZVI^bm were increased by 2.2–32.4 times and 2.8–11.6 times, respectively, compared to those by pristine ZVI. In the semi-continuous flow reactor, Fe²⁺-ZVI^bm synthesized with industrial-grade ZVI powders displayed advantages on the removal of target contaminants (V, P, Se, As) in two practical wastewaters, further revealing its great potential for application.

作为一种清洁、快速、高效的化学合成策略，机械化学球磨方法已被开发用于制备用于水处理的功能材料。基于我们之前的发现，加速腐蚀和促进电子转移对于零价铁 (ZVI) 去除污染物至关重要，合成了用于金属 (类) 的球磨 FeCl ₂和 ZVI (Fe ²⁺ -ZVI ^bm )本研究中的隔离。结果表明，Fe ²⁺ -ZVI ^bm完全去除了Se(VI)，去除Se(VI)后溶液中没有残留Fe ²⁺。与其他增强型 ZVI 技术相比，Fe ²⁺ -ZVI ^bmSe(VI)去除在去除率、去除能力、还原剂利用率、还原剂电子效率、比去除能力、初始pH适应性和运行成本等方面表现出明显的优势。考察了储存条件对Fe ²⁺ -ZVI ^bm性能的影响，密封储存在空气中可以保证Fe ²⁺ -ZVI ^{bm对Se(VI)的去除性能。}各种金属(类)s (V(V)、Cr(VI)、Cu(II)-EDTA、As(III)、As(V)、Se(IV)、Sb(III)-酒石酸盐的速率和容量, Sb(V), 和 U(VI)) 被 Fe ²⁺ -ZVI ^bm去除与原始 ZVI 相比，分别增加了 2.2-32.4 倍和 2.8-11.6 倍。在半连续流反应器中，工业级ZVI粉体合成的Fe ²⁺ -ZVI ^bm在去除两种实际废水中的目标污染物（V、P、Se、As）方面表现出优势，进一步揭示了其巨大的应用潜力.