期刊
BIORESOURCE TECHNOLOGY
卷 268, 期 -, 页码 346-354出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.08.010
关键词
Colloidal gas aphrons; Bubble surface-functionalization; Bio-recalcitrant dissolved organic matter; Bio-recalcitrant colorants; Cassava distillery wastewater
资金
- National Science Foundation of China [51608373, 51378373]
- Scientific Starting Foundation of Zhejiang University of Technology [2017129008229]
- Foundation of State Key Laboratory of Pollution Control and Resource Reuse (Tongji University), China [PCRRE16015]
Efficient removal of bio-recalcitrant dissolved organic matter (DOM) and colorants is essential for discharging or reusing the distillery wastewater. The present work adopted a novel microbubble system - Fe(III)-coagulantmodified colloidal gas aphrons (CGAs) in flotation as tertiary treatment of the bio-chemically treated cassava distillery wastewater. Approximately 93% of bio-recalcitrant color and around 79% of dissolved organic carbon (DOC) were removed at the initial pH of 9.0 and 7.1, individually. The modified CGAs exhibited strong ability of complexation and electrostatic attraction of the polyanions of DOM and colorants. But the 1-10 kDa DOM was found to be resistant to the CGA capture. Compared with directly dosing coagulant, the Fe(III)-coagulantmodified CGAs consumed similar to 47% and similar to 21% less coagulant to achieve the optimum decoloration efficiency and DOC removal, respectively. In the flotation with Fe(III)-coagulant-modified CGAs, the coagulant-dosing system could be omitted while the coagulant utilization was improved.
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