Performance of laboratory-scale constructed wetlands coupled with micro-electric field for heavy metal-contaminating wastewater treatment

被引：37

作者：

Song, Xinshan ^{[1
]}

Yan, Denghua ^{[2
]}

Liu, Zhenhong ^{[1
]}

Chen, Yan ^{[1
]}

Lu, Shoubo ^{[1
]}

Wang, Daoyuan ^{[1
]}

机构：

[1] Donghua Univ, Coll Environm Sci & Engn, Shanghai 201620, Peoples R China

[2] China Inst Water Resources & Hydropower Res, Beijing 100044, Peoples R China

来源：

ECOLOGICAL ENGINEERING | 2011年 / 37卷 / 12期

基金：

上海市自然科学基金; 中国国家自然科学基金;

关键词：

Constructed wetlands; Micro-electric field; Heavy metals; Wastewater treatment; Canna generalis; ACCUMULATION; REMOVAL; NUTRIENT; ZN; CU;

D O I：

10.1016/j.ecoleng.2011.08.019

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

This study reports the performance of laboratory-scale constructed wetlands coupled with micro-electric field (CWMEF) planted cannas (Canna generalis) for heavy metal-contaminating wastewater treatment. The CWMEF had a better performance for heavy metal (HM) removal from wastewater than did the ordinary constructed wetlands (CWs). Owing to the stimulation of the suitable voltage and electrical exposure time, cannas may grew better and in fact assimilated more metallic ions in CWMEF than in CWs. The environmental conditions in CWMEF, such as the higher pH by electrolysis of water, the presence of aluminum ions by anodizing of aluminum, caused chemical precipitation, physical adsorption and flocculation of metallic ions. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2061 / 2065

页数：5

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