摘要：

将纳米Fe₃O₄投加至上流式厌氧污泥床反应器中，强化厌氧活性污泥降解偶氮染料废水的性能。结果表明，相比于未投加反应器，纳米Fe₃O₄能显著提高厌氧活性污泥对偶氮染料废水的降解性能，COD去除率、色度去除率及产甲烷量分别提高了61.9%、10.1%和68.1%。同时，纳米Fe₃O₄增加了厌氧活性污泥的EPS含量，有利于酶F₄₂₀产生，提升了污泥导电性，有利于活性污泥的稳定性和高效性，具有良好的实际应用前景。

关键词: 偶氮染料废水, 厌氧活性污泥, 纳米Fe₃O₄, 强化

Abstract:

Fe₃O₄ nanoparticles are dosed into UASB to enhance the anaerobic activated sludge degradation of azo dye wastewater. The results show that with the presence of Fe₃O₄ nanoparticles, removal rates of COD and chroma increase by 61.9% and 10.1%, the production rate of methane improves by 68.1%. The results indicate Fe₃O₄ nanoparticle plays a significant role in enhancing the degradation performance of wastewater. Meanwhile, Fe₃O₄ nanoparticles are beneficial to improve the conductivity, extracellular polymeric substances(EPS) and coenzyme F₄₂₀ productions of anaerobic sludge, which promote sludge stability and efficiency. Therefore, it provides an excellent practical application prospect.

Key words: azo dye wastewater, anaerobic activated sludge, Fe₃O₄ nanoparticles, enhancement

中图分类号: 

• X703