Spiramycin fermentation residue (SFR) can be managed to recycle organic substances through bioprocesses. However, its rigid matrix structure and high residual antibiotic of spiramycin (SPM) are not conducive to the high efficiency of bioprocesses. The pretreatment of SFR by thermally activated peroxydisulfate (TAP) was first employed for improving its biodegradability by matrix structure disintegration and residual SPM degradation. The results demonstrated that the SFR were efficiently disintegrated to smaller particles. The effective destruction of SFR matrix structure was predicted by the release of carbohydrates and proteins, and was intuitively confirmed by scanning electron microscopy (SEM). The production of dissolved organic matters was clearly enhanced by TAP treatment, but the increment decreased with the increase of PDS dosage due to the mineralization of radicals. The degradation of SPM fitted to first-order kinetics model, and its degradation rate was promoted by increasing PDS dosage, increasing activation temperature and decreasing pH. The degradation pathway of SPM was mainly the separation of sugar groups (mycarose, mycaminose and forosamine) from the lactone ring, and the final oxidation product of SPM that have been identified was predicted to be harmless. The efficient and powerful TAP might be a suitable pretreatment approach for improving the biodegradability of SFR.

螺旋霉素发酵残渣 (SFR) 可以通过生物过程进行管理以回收有机物质。然而，其刚性的基质结构和高残留的螺旋霉素抗生素（SPM）不利于生物过程的高效化。热活化过二硫酸盐 (TAP) 对 SFR 的预处理首先被用于通过基质结构分解和残余 SPM 降解来提高其生物降解性。结果表明，SFR 被有效地分解成更小的颗粒。SFR 基质结构的有效破坏是通过碳水化合物和蛋白质的释放来预测的，并通过扫描电子显微镜 (SEM) 直观地证实。TAP处理明显提高了溶解有机物的产生，但由于自由基的矿化，增量随着PDS用量的增加而减少。SPM的降解符合一级动力学模型，其降解速率随着PDS用量的增加、活化温度的升高和pH的降低而加快。SPM的降解途径主要是从内酯环上分离出糖基（mycarose、mycaminose和forosamine），预计最终鉴定出的SPM氧化产物是无害的。高效而强大的 TAP 可能是提高 SFR 生物降解性的合适预处理方法。SPM的降解途径主要是从内酯环上分离出糖基（mycarose、mycaminose和forosamine），预计最终鉴定出的SPM氧化产物是无害的。高效而强大的 TAP 可能是提高 SFR 生物降解性的合适预处理方法。SPM的降解途径主要是从内酯环上分离出糖基（mycarose、mycaminose和forosamine），预计最终鉴定出的SPM氧化产物是无害的。高效而强大的 TAP 可能是提高 SFR 生物降解性的合适预处理方法。