Removing heavy metals from Isfahan composting leachate by horizontal subsurface flow constructed wetland

被引：30

作者：

Bakhshoodeh, Reza ^{[1
]}

Alavi, Nadali ^{[2
,3
]}

Mohammadi, Amir Soltani ^{[4
,5
]}

Ghanavati, Hossein ^{[4
,5
]}

机构：

[1] Shahid Chamran Univ, Sch Water Sci Engn, Dept Environm Engn, Ahvaz, Iran

[2] Shahid Beheshti Univ Med Sci, Environm & Occupat Hazards Control Res Ctr, Tehran, Iran

[3] Shahid Beheshti Univ Med Sci, Sch Publ Hlth, Dept Environm Hlth Engn, Tehran, Iran

[4] Agr Biotechnol Res Inst Iran, Microbial Biotechnol & Biosafety Dept, Karaj, Iran

[5] Shahid Chamran Univ, Sch Water Sci Engn, Dept Irrigat & Drainage, Ahvaz, Iran

来源：

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2016年 / 23卷 / 12期

关键词：

Compost; Leachate; Constructed wetland systems; Horizontal flow; Vetiver; Heavy metals; WASTE-WATER TREATMENT; LANDFILL LEACHATE; VETIVERIA-ZIZANIOIDES; CONTAMINATED SOIL; PHYTOREMEDIATION; ACCUMULATION; PRETREATMENT; GRASS; LEAD; MANAGEMENT;

D O I：

10.1007/s11356-016-6373-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Composting facility leachate usually contains high concentrations of pollutants including heavy metals that are seriously harmful to the environment and public health. The main purpose of this study was to evaluate heavy metals removal from Isfahan composting facility (ICF) leachate by a horizontal flow constructed wetland (HFCWs) system. Two horizontal systems were constructed, one planted with vetiver and the other without plant as a control. They both operated at a flow rate of 24 L/day with a 5-day hydraulic retention time (HRT). The average removal efficiencies for Cr (53 %), Cd (40 %), Ni (35 %), Pb (30 %), Zn (35 %), and Cu (40 %) in vetiver constructed wetland were significantly higher than those of the control (P < 0.05). Accumulations of heavy metals in roots were higher than shoots. Cd and Zn showed the highest and the lowest bioconcentration factor (BCF), respectively. Vetiver tolerates the extreme condition in leachate including high total dissolved solids.

引用

页码：12384 / 12391

页数：8

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