Evaluation of Vertical-Flow Constructed Wetlands for Swine Wastewater Treatment

被引：14
|
作者：
Sarmento, Antover Panazzolo [1 ,2 ]
Borges, Alisson Carraro [1 ]
Matos, Antonio Teixeira [1 ]
机构：
[1] Univ Fed Vicosa, Dept Agr Engn, BR-36570000 Vicosa, MG, Brazil
[2] Univ Fed Goias, Dept Civil Engn, BR-75704020 Catalao, Go, Brazil
来源：
WATER AIR AND SOIL POLLUTION | 2012年 / 223卷 / 03期
关键词：
Agro-industry effluents; Constructed wetlands; Nutrients; Macrophytes; PERFORMANCE; REMOVAL; NITROGEN; SYSTEMS;
D O I：
10.1007/s11270-011-0924-4
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, the role of Cyperus sp. was evaluated for removal of pollutants from swine wastewater. Vertical-flow pilot scale constructed wetlands (CWs) operating with a hydraulic retention time (HRT) of 72 h were monitored in a greenhouse, located in Vicosa, Brazil. Significant differences were observed for the following parameters: Kjeldahl nitrogen, total phosphorus, alkalinity and electric conductivity, with averages removals of 37.5 and 28.5%, 55.9 and 44.4%, 30.2 and 25.6 and 26.1% and 22.9% (for planted and unplanted CWs, respectively). The rate of dry matter yield from Cyperus sp. was 7.5 gm(-2) day(-1), and the nutrient uptake capacities were 21.8, 2.1, 14.0 and 0.9 gm(-2) of N, P, K and Na, respectively. Evapotranspiration (2.7 mm day(-1)) was statistically higher in the planted CWs. Plants in the CWs are important for achieving high nutrient removal.
引用
收藏
页码：1065 / 1071
页数：7
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