Tropical Application of Floating Treatment Wetlands

被引：63

作者：

Weragoda, S. K. ^{[2
]}

Jinadasa, K. B. S. N. ^{[3
]}

Zhang, Dong Qing ^{[1
]}

Gersberg, Richard M. ^{[4
]}

Tan, Soon Keat ^{[1
]}

Tanaka, Norio ^{[5
]}

Jern, Ng Wun ^{[1
]}

机构：

[1] Nanyang Technol Univ, Nanyang Environm & Water Res Inst NEWRI, Singapore 639798, Singapore

[2] Kandy S Treatment Plant, Natl Water Supply & Drainage Board, Kandy 20400, Sri Lanka

[3] Univ Peradeniya, Dept Civil Engn, Peradeniya 20400, Sri Lanka

[4] San Diego State Univ, Grad Sch Publ Hlth, San Diego, CA 92182 USA

[5] Saitama Univ, Grad Sch Sci & Engn, Sakura Ku, Saitama 3388570, Japan

来源：

WETLANDS | 2012年 / 32卷 / 05期

关键词：

Floating treatment wetlands; Wastewater; Nutrients; Typha angustifolia; Canna iridiflora; WASTE-WATER TREATMENT; CONSTRUCTED WETLANDS; NUTRIENT REMOVAL; ROOT-ZONE; MACROPHYTES; PERFORMANCE; NITROGEN; IMPACT; SITES;

D O I：

10.1007/s13157-012-0333-5

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The treatment efficiencies of floating treatment wetlands (FTWs) containing two types of macrophytes, Typha angustifolia and Canna iridiflora, were investigated in a pilot scale study in the tropical climate of Sri Lanka. In batch experiments, over 80 % of biological oxygen demand (BOD5) and ammonium (NH (4) (+) -N) removal was observed, while nitrate (NO (3) (-) -N) removal was over 40 %. Typha angustifolia showed slightly higher BOD5, NH (4) (+) -N and NO (3) (-) -N removal than Canna iridiflora. Because of higher and steady root growth, Typha angustifolia resulted in a better performance and has a greater potential to extract nutrients from wastewater and allow water-plant interactions than Canna iridiflora whose root mat is thick and compact. Similar to the batch system, the continuous flow systems performed better at most times with Typha angustifolia. FTWs with Typha angustifolia may be considered a possible solution for lake restoration where there are space and cost constraints.

引用

页码：955 / 961

页数：7

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