期刊
BIORESOURCE TECHNOLOGY
卷 307, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.123227
关键词
Hypochlorite types; Waste activated sludge (WAS); Anaerobic fermentation; Volatile fatty acids (VFAs); Microbial community; Dewatering
资金
- National Natural Science Foundation of China [51708171, 41807462, 51878243]
- China Postdoctoral Science Foundation [2018M630508, 2019T120387]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), China
The effects of different hypochlorite types (namely Ca(OCl)(2) and NaOCl) on the waste activated sludge (WAS) anaerobic fermentation, and microbial community and activity were investigated. The results indicated that both Ca(OCl)(2) and NaOCl contributed to volatile fatty acids (VFAs) production by simultaneously enhancing the solubilization, hydrolysis and acidification processes. The maximal VFAs was respectively 1379.5 (at 10 d) and 1621.5 (at 8 d) mg COD/L at the optimal dose of NaOCl and Ca(OCl)(2) while it was merely 157.4 (at 6 d) mg COD/L in the control. However, the Ca(OCl)(2) might affect the anaerobic process in a continuous mode while the NaOCl was relatively transient, which caused distinctive influences on the microbial structure and activity, and subsequently VFAs production in WAS fermentation systems. Moreover, Ca(OCl)(2) treatments showed advantages over NaOCl on WAS dewatering and VSS reduction, implying the superiority of utilizing Ca(OCl)(2) as additives for WAS disposal.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据