[1]ZENG Xiaomei,LIU Peng,ZHANG Xiaobin.Phytoremediation of Urban Wastewater by Ornamental Hydrophytes[J].Research of Soil and Water Conservation,2015,22(05):349-353.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 05
Page number:
349-353
Column:
Public date:
2015-10-28
- Title:
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Phytoremediation of Urban Wastewater by Ornamental Hydrophytes
- Author(s):
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ZENG Xiaomei1, LIU Peng2, ZHANG Xiaobin2
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1. Jinhua Polytechnic, Jinhua, Zhejiang 321007, China;
2. Key Laboratory of Botany, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
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- Keywords:
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ornamental hydrophytes; urban wastewater; phytoremediation; heavy metal
- CLC:
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Q945.17;X703;X173
- DOI:
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- Abstract:
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Based on the constructed wetland systems simulated with Iris pseudacorus, Acorus gramineus, Acorus calamus, Lythrum salicaria, Alisma orientale and Reinekea carnea, the study on the phytoremediation effect of urban wastewater was carried out. We determined TN, TP, COD, BOD5 and heavy metals (Cr, Pb, Cd) on the 5th day, 10th day and 15th day, and investigated the phytoremediation effect of urban wastewater. Results indicated that scavenging efficiency of all treating-systems to TN, TP, COD, BOD5 and heavy metals (Cr, Pb, Cd) in the wastewater increased gradually over time, which were above 88.1%, 95.9%, 90.6%, 86.7%, 78.1%, 83.2% and 91.4%, respectively, on the 15th day. This was mainly caused by differences in plant physiological structures and functions, while components in the wastewater also affected the phytoremediation. On the other hand, abilities of plants to scavenge nutrients varied in different treating time. In view of either scavenging efficiency or contribution of plants than other plants, Acorus gramineus and Iris pseudacorus are good species for bio-remediation of composite-polluted water such as urban wastewater.