Electrolytic manganese residue (EMR) is a solid waste generated in filters after sulphuric acid leaching of manganese carbonate ore, which contains manganese, ammonia nitrogen and heavy metals that cause damage to environment. In fact, leaching and recovery of manganese and ammonia nitrogen from EMR is the key to the harmless treatment and resource utilization of EMR. In this study, electric field was applied to leach manganese and ammonia nitrogen from EMR. In addition, carbonate precipitation and struvite precipitation methods were used to recover manganese and ammonia nitrogen from leaching solution. The results showed that the leaching efficiencies of manganese and ammonia nitrogen were 88.07% and 91.50%, respectively, when the current density was 35 mA/cm², the mass of H₂SO₄ and H₂O₂ were 9.15 wt% and 3.33 wt%, solid-liquid ratio was 1:5 at temperature of 40 °C leached for 120 min. All heavy metals content in leached EMR except Ni and Cd were below national standard (GB 15618–2018) by electric field enhanced leaching. Meanwhile, manganese and ammonia nitrogen in leaching solution were fractional recovered by MnCO₃ and struvite, and the recovery efficiency of manganese and ammonia nitrogen was 98.6% and 98.0%, respectively. This study provides a direction for the effective harmless treatment and resource utilization of EMR.

电解锰残留物（EMR）是在硫酸浸出碳酸锰矿石后，过滤器中产生的固体废物，其中含有锰，氨氮和重金属，会对环境造成破坏。实际上，从EMR中浸出和回收锰和氨氮是EMR无害化处理和资源利用的关键。在这项研究中，电场被应用于从EMR中浸出锰和氨氮。此外，碳酸盐沉淀法和鸟粪石沉淀法被用于从浸出液中回收锰和氨氮。结果表明，当电流密度为35 mA / cm ^2时，H ₂ SO质量为：锰和氨氮的浸出效率分别为88.07％和91.50％。₄和H ₂ O ₂分别为9.15 wt％和3.33 wt％，在40°C的温度下固液比为1：5沥滤120分钟。通过电场增强浸出，除Ni和Cd外，浸出EMR中的所有重金属含量均低于国家标准（GB 15618–2018）。同时，通过MnCO ₃和鸟粪石对浸出液中的锰和氨氮进行分步回收，锰和氨氮的回收率分别为98.6％和98.0％。该研究为EMR的有效无害化处理和资源利用提供了指导。