Long-term removals of organic micro-pollutants in reactive media of horizontal subsurface flow constructed wetland treating landfill leachate

被引：14
|
作者：
Witthayaphirom, Chayanid [1 ]
Chiemchaisri, Chart [1 ]
Chiemchaisri, Wilai [1 ]
Ogata, Yuka [2 ]
Ebie, Yoshitaka [2 ]
Ishigaki, Tomonori [2 ]
机构：
[1] Kasetsart Univ, Fac Engn, Dept Environm Engn, Bangkok 10900, Thailand
[2] Natl Inst Environm Studies, Ctr Mat Cycles & Waste Management Res, Tsukuba, Ibaraki 3058506, Japan
来源：
BIORESOURCE TECHNOLOGY | 2020年 / 312卷
关键词：
Constructed wetland; Landfill leachate; Micro-pollutants; Reactive media; DIBUTYL PHTHALATE; WASTE-WATER; NITROGEN REMOVAL; MSW LANDFILL; BIODEGRADATION; PERFORMANCE; ADSORPTION; MECHANISM; BARRIER; ESTERS;
D O I：
10.1016/j.biortech.2020.123611
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In this work, the removals of organic micro-pollutants (OMPs), i.e. DEP, DBP, 2,6-DTBP, BHT, and DEHP in sand, clay and iron powder mixed media of horizontal subsurface flow constructed wetland (HSSF) from landfill leachate were investigated over 3 years period. The biodegradation was mainly responsible for the removals of DEP, DBP, 2,6-DTBP and BHT whereas DEHP was initially removed through adsorption and formation of iron-organic complex and then subsequently biodegraded during long-term operation as OMP degrading microbial consortium attached to the reactive media was enriched. This study demonstrates that an application of reactive HSSF system can be a viable option for advanced landfill leachate treatment to meet ecological safety level.
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页数：8
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