纳米Fe3O4强化厌氧活性污泥降解偶氮染料废水

Degradation performance of azo dye wastewater by Fe3O4 nanoparticles-enhanced anaerobic activated sludge

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。

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.