考虑到单一和传统两阶段治疗的挑战,高级氧化和生物降解,在实际焦化废水处理中,开发了一种密切耦合的催化臭氧化和生物降解(ICOB)反应器。在这项研究中,ICOB处置明显加强了对Cu2+的去除,Fe3+,和颜色的39%,45%,52%,分别,优于生物降解。催化臭氧化有效地将不饱和有机物和高分子量的溶解有机物分解成较小的,更多可生物降解的分子。与生物降解相比,ICOB系统显著增加了假单胞菌的丰度,Sphingopyxis,和Brevundimonas达到96%,67%,和85%,分别。这些微生物,拥有降解苯酚的基因,芳香化合物,多环芳烃,和硫代谢,进一步增强了中间体的矿化作用。因此,ICOB系统优于生物降解和催化臭氧化处理,化学需氧量去除率为58%,毒性降低为47%。总的来说,ICOB处理显示了在焦化废水处理中的实际工程应用的希望。
Considering the challenges for both single and traditional two-stage treatments, advanced oxidation and biodegradation, in the treatment of actual coking wastewater, an intimately coupled catalytic ozonation and biodegradation (ICOB) reactor was developed. In this study, ICOB treatment significantly enhanced the removal of Cu2+, Fe3+, and color by 39 %, 45 %, and 52 %, respectively, outperforming biodegradation. Catalytic ozonation effectively breaking down unsaturated organic substances and high-molecular-weight dissolved organic matter into smaller, more biodegradable molecules. Compared with biodegradation, the ICOB system significantly increased the abundances of Pseudomonas, Sphingopyxis, and Brevundimonas by ∼ 96 %, ∼67 %, and ∼ 85 %, respectively. These microorganisms, possessing genes for degrading phenol, aromatic compounds, polycyclic aromatics, and sulfur metabolism, further enhanced the mineralization of intermediates. Consequently, the ICOB system outperformed biodegradation and catalytic ozonation treatments, exhibiting chemical oxygen demand removal rate of ∼ 58 % and toxicity reduction of ∼ 47 %. Overall, the ICOB treatment showcases promise for practical engineering applications in coking wastewater treatment.