印染污泥中多环芳烃降解技术的研究进展

Research progress of degradation technology of polycyclic aromatic hydrocarbons in textile dyeing sludge

印染污泥是处理印染废水产生的副产物,多环芳烃是印染污泥中重要的特征污染物,质量分数为2.3~143.8 mg/kg,不仅对环境和人体有很大的危害,而且具有稳定性和耐久性,很难在环境中降解,研究降解多环芳烃的技术迫在眉睫。介绍O_(3)/H_(2)O_(2)联合高级氧化技术、超声/Fe0/EDTA体系、超临界水氧化技术(SCWO)、超声-芬顿联合氧化技术(US-Fenton)和微生物降解技术的原理。

Textile dyeing sludge is a by-product of the treatment of textile dyeing wastewater,and polycyclic aromatic hydrocarbons are important characteristic pollutants in textile dyeing sludge.The content of polycyclic aromatic hydrocarbons in sludge is 2.3~143.8 mg/kg.Polycyclic aromatic hydrocarbons are not only harmful to the environment and human body,but also difficult to degrade in the environment due to its stability and durability.It is urgent to study the technology of degrading polycyclic aromatic hydrocarbons.The principles of O_(3)/H_(2)O_(2)7 joint advanced oxidation technology,ultrasonic/Fe0/EDTA system,supercritical water oxidation technology(SCWO),ultrasonic-fenton joint oxidation technology(US-Fenton)and microbial degradation were introduced.