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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Evapotranspiration and crop coefficient for Typha latifolia in constructed wetlands

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Author(s):
Thomaz Queluz, Joao Gabriel [1] ; Sousa Pereira, Francisca Franciana [2] ; Sanchez-Roman, Rodrigo Maximo [2]
Total Authors: 3
Affiliation:
[1] Sao Paulo State Univ UNESP, Inst Nat Sci & Technol, Petrol & Metallogeny Dept, BR-13506900 Rio Claro, SP - Brazil
[2] Sao Paulo State Univ UNESP, Sch Agr, Rural Engn Dept, Rua Jose Barbosa de Barros 1780, BR-18610307 Botucatu, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: WATER QUALITY RESEARCH JOURNAL OF CANADA; v. 53, n. 2, p. 53-60, MAY 2018.
Web of Science Citations: 0
Abstract

The purpose of this work was to estimate the crop evapotranspiration (ETc) and to determine the crop coefficient (Kc) of Typha latifolia in constructed wetlands. The experiment used two horizontal subsurface flow constructed wetlands (HFCWs) cultivated with T. latifolia. Each HFCW received 50 L of secondary effluent daily, resulting in 3.2 days of nominal hydraulic retention time (disregarding effects of evapotranspiration and precipitation). In order to determine the ETc, water mass balance of the HFCWs was performed. In this analysis, ETc was considered equal to the difference between the inflow (secondary effluent + precipitation) and the outflow. The Kc was calculated using ETc and reference evapotranspiration (ETo) data (Kc = ETc/ETo). The results showed that 7-day average ETc varied dramatically within the range of 4.9-20.0 mm day(-1), with a monthly average of 9.85 mm day(-1). The mean monthly values of Kc varied from 2.03 to 3.68 (mean: 2.74). ETc is very important with respect to the HFCW water balance because it decreases effluent outflow considerably. Therefore, the findings of this work indicate that water losses caused by evapotranspiration should be considered when designing constructed wetlands. (AU)

FAPESP's process: 14/05997-6 - Dynamic modeling of constructed wetland for treatment of domestic wastewater in isolated communities
Grantee:Rodrigo Maximo Sanchez Roman
Support Opportunities: Regular Research Grants