In this study, the visible-light-induced intimately coupled photocatalysis and biodegradation (ICPB) technology was fabricated using the TiO₂/bagasse cellulose composite as the carrier and Phanerochaete mixed activated sludge as the biological source. The ICPB degradation effect of elemental chlorine free (ECF) bleaching wastewater was evaluated via the response surface design. Then, the wastewater was characterized, including absorbable organic halogen (AOX), dissolved organic carbon (DOC), chemical oxygen demand (COD), chroma, pH, suspended solids, and the organic compound changes in wastewater were analyzed by fourier transform infrared spectroscopy (FT-IR). Under the optimal conditions of pH 7, carrier filling rate of 5%, aeration rate of 2 L/min, and reaction time of 7 h, the degradation efficiencies of AOX, COD, and DOC were 95%, 91%, and 82%, respectively. The X-ray photoelectron spectroscopy (XPS) results of the ICPB carrier after the reaction were almost identical to those before the reaction. The biomass and its activity on the ICPB system were analyzed by the dominant bacteria during degradation (Curaneotrichosporon, Paenibacillus, Cellulonas, Phanerochaete, Dechlorobacter, Rhodotorula, Sphingobacterium, and Ruminiclostridium), which had a good degradation effect on wastewater. This study affords a novel method for the degradation of ECF bleaching wastewater and a new idea for ICPB technology optimization.

本研究以TiO ₂ /甘蔗渣纤维素复合材料为载体，以Phanerochaete为载体，制备了可见光诱导的紧密耦合光催化和生物降解（ICPB）技术。混合活性污泥作为生物源。通过响应面设计评估了无元素氯 (ECF) 漂白废水的 ICPB 降解效果。然后对废水进行表征，包括可吸收有机卤素（AOX）、溶解有机碳（DOC）、化学需氧量（COD）、色度、pH值、悬浮物，并通过傅里叶变换红外光谱分析废水中有机化合物的变化(FT-IR)。在pH为7、载体填充率为5%、曝气量为2 L/min、反应时间为7 h的最佳条件下，AOX、COD和DOC的降解效率分别为95%、91%和82% ， 分别。反应后ICPB载体的X射线光电子能谱（XPS）结果与反应前几乎相同。Curaneotrichosporon，类芽孢杆菌，Cellulonas，白腐，Dechlorobacter，红酵母，鞘氨醇，和Ruminiclostridium），这对废水良好的降解效果。该研究为ECF漂白废水的降解提供了一种新方法，为ICPB技术优化提供了新思路。