Enhancing anaerobic digestion of actual papermaking wastewater with addition of Fenton sludge

被引：7

作者：

Wang, Xianbao ^{[1
,2
]}

Li, Xiang ^{[1
]}

Xie, Yili ^{[1
]}

Zhang, Jialu ^{[1
]}

Ran, Jiarong ^{[1
]}

Zhang, Minting ^{[1
]}

Zhang, Lixin ^{[1
,2
]}

Zhang, Anlong ^{[1
,2
]}

Zhu, Chao ^{[1
,2
]}

机构：

[1] Shaanxi Univ Sci & Technol, Sch Environm Sci & Engn, Xian 710021, Shaanxi, Peoples R China

[2] China Light Ind Water Pollut Control Engn Ctr, Xian 710021, Shaanxi, Peoples R China

来源：

JOURNAL OF WATER PROCESS ENGINEERING | 2024年 / 63卷

基金：

中国国家自然科学基金;

关键词：

Fenton sludge; Papermaking wastewater; Anaerobic digestion; Microbial metabolic activity; Electron transfer; ELECTRON-TRANSFER; DEGRADATION; METHANOGENESIS; PERFORMANCE; TRANSPORT; MAGNETITE;

D O I：

10.1016/j.jwpe.2024.105520

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of Fenton sludge on anaerobic digestion of actual papermaking wastewater was investigated in this study. The results showed the iron in the Fenton sludge primarily exists in the form of needle-like iron oxide (FeOOH) and showed high electron transfer capability. Fenton sludge promoted electron transport in anaerobic digestion and electron transport system activity increased by 59 %. Fenton sludge enhanced the metabolic activity of anaerobic microorganisms, especially that of the hydrogenotrophic methanogens, the content of coenzyme F 420 increased by 48.9 %. Besides, the microbial community structure in anaerobic digestion was affected by Fenton sludge, the quantity of microorganisms increased significantly. The dissimilatory iron- reducing bacteria ( Desulfobacterota ) and hydrogenotrophic methanogens ( Methanobacterium and Methanolinea) ) were enriched, which promoted the methane production. As a result, the anaerobic digestion performance of papermaking wastewater was promoted significantly by adding Fenton sludge, the organic matter removal efficiency and methane production increased by 11.17 % and 15.12 %. This study provided an effective solution for the optimisation of anaerobic treatment of actual refractory organic wastewater.

引用

页数：9

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