An ever-increasing amount of wasted activated sludge is the greatest challenge to wastewater treatment plants on both the economic and environmental sides. Within the last five years, great attention has been attracted to apply sulfate radical (SO₄⁻)-based oxidation for sludge treatment. Based on the published studies, an extensive review about ${\text{SO}}_4^{\text{<mglyph src="https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/16/entities/rad"></mglyph>}-}$-based oxidation applied for sludge disintegration, dewaterability enhancement, metal solubilization, and micropollutant degradation in the sludge is presented. Focus is placed on sludge dewaterability and disintegration by the activation of peroxymonosulfate (PMS) and peroxydisulfate (PDS) with different activators. Knowledge gaps are pointed out and discussed, more work should be carried out to further supplement and optimize ${\text{SO}}_4^{\text{<mglyph src="https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/16/entities/rad"></mglyph>}-}$-based oxidation processes for highly-efficient and cost-effective treatment in the practical sludge systems though their potentials on sludge treatment have been demonstrated.

从经济和环境两方面来看，浪费的活性污泥的数量不断增加是废水处理厂面临的最大挑战。在过去的五年中，非常注意吸引到应用硫酸根（SO ₄ ^- ）为基础的氧化污泥处理。根据已发表的研究，对${\text{所以}}_4^{\text{<mglyph src="https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/16/entities/rad"></mglyph>}--}$提出了一种基于氧化的氧化技术，用于污泥的分解，脱水性的提高，金属的增溶作用以及污泥中微污染物的降解。通过使用不同的活化剂活化过氧一硫酸盐（PMS）和过氧二硫酸盐（PDS）来激活污泥的脱水性和分解性。指出并讨论了知识差距，应开展更多工作以进一步补充和优化${\text{所以}}_4^{\text{<mglyph src="https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/16/entities/rad"></mglyph>}--}$尽管已经证明了基于氧化的氧化方法可在实际污泥系统中进行高效且具有成本效益的处理，但已证明了其在污泥处理方面的潜力。