Design methodology accounting for the effects of porous medium heterogeneity on hydraulic residence time and biodegradation in horizontal subsurface flow constructed wetlands
نویسندگان
چکیده
Design methodology accounting for the effects of porous medium heterogeneity on hydraulic residence time and biodegradation in horizontal subsurface flow constructed wetlands A. Brovelli1, O. Carranza-Diaz, L. Rossi, D.A. Barry Laboratoire de technologie écologique, Institut d’ingénierie de l’environnement, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station No. 2, CH-1015 Lausanne, Switzerland E-mails: [email protected], [email protected], [email protected], [email protected] Telephone: +41 (21) 693-5919, +41 (21) 693-5576 Facsimile: +41 (21) 693-8035
منابع مشابه
Pollutant removal by Canna Generalis in tropical constructed wetlands for domestic wastewater treatment
Constructed wetlands have not been commonly used in Vietnam due to the lack of information in the selection of proper types of constructed wetlands, type of reeds, design parameters and performance efficiency, in tropical climates. This paper focuses on Canna generalis, which is a common reed and easy to grow both in water and wet land conditions. Two kinds of hybrid constructed wetlan...
متن کاملPerformance Review of Hybrid Subsurface Constructed Wetlands in Urban Wastewater Supplementary Treatment
Today, the use of refined urban wastewater for agriculture is growing considerably. One of the methods for the natural treatment of wastewater is the constructed wetland. In this study, the effects of three and six days retention time on the vertical, horizontal and hybrid constructed wetland (first vertical and then horizontal) with perlite beds and Cyperus plants on the urban wastewater were ...
متن کاملEffect of substrate heterogeneity on flow in constructed wetlands and sand filters
INTRODUCTION Horizontal flow constructed wetlands (HCWs) are engineered systems that can eliminate a wide range of pollutants from the aquatic environment (Vymazal, 2008). In their simplest form, they are large sand filters for biodegradation of through-flow waters. Their suitability to remove the organic and nutrient load from municipal and agricultural wastewaters has been largely demonstrate...
متن کاملStudy the Performance of Hybrid Constructed Wetland with Pumice Substrate and Vetiver Plants in Urban Wastewater Treatment
One of the ways to reduce the amount of wastewater pollution is the use of constructed wetlands. In this research, the performance of a hybrid constructed wetland with pumice ore and vetiver plant on urban wastewater has been investigated. Hybrid wetlands with these specifications were constructed in the vicinity of wastewater treatment at the Isfahan University of Technology. To evaluate the p...
متن کاملبررسی توزیع جریان بر زمان ماند و رفتار هیدرولیکی تالاب مصنوعی زیرسطحی افقی (مطالعه موردی: اصفهان)
In addition to kinematic description of biological reaction, flow pattern plays an important role in designing constructed wetlands. This study investigates the effects of flow distribution on constructed sub-surface horizontal flow wetland with a length of 26 m, width of 4 m and 1% bed slope in order to understand internal hydraulic functioning patterns. Inlet configuration is selected as a va...
متن کامل