OrbHab Paper
Value-Adding Through Creation Of High Diversity Gardens And Ecoscapes In Subsurface Flow Constructed Wetlands: Case Studies In Algeria And Australia Of Constructed Wetland Systems (2008)
ID: 77 Flag Paper
Title: Value-Adding Through Creation Of High Diversity Gardens And Ecoscapes In Subsurface Flow Constructed Wetlands: Case Studies In Algeria And Australia Of Constructed Wetland Systems
Authors: M. Nelson, F. Cattin, M. Rajendran, R. Tredwell, L. Hafouda
Journal Name: 1th International Conference on Wetland Systems for Water Pollution Control
Year of Publication: 2008
Page Number: 0
Category: biosphere
Availability: pdf
Detail Page: /papers/77
Web Link: https://ecotechnics.edu/wp-content/uploads/2011/08/India_international-wetland-conf-paper.pdf
BoK Link: [[paper:77]]
Abstract
Two case studies are presented of recent applications of Wastewater Gardens (WWG) - for an Aboriginal community in northwest Australia and in southern Algeria. WWG uses high-diversity of plants in the subsurface flow wetland and in the final subsoil irrigation to value-add through water conservation, prevention of pollution of groundwater and by growing beautiful and when possible valuable plants suited to the climate. Treatment typically averages 90+% reduction of BOD and TSS, 98+% reduction in coliform bacteria and substantial productive uptake of nitrogen and phosphorus. WWG technology was originally developed from the necessity in Biosphere 2 to fully recover and recycle the water and nutrients in wastewater to complete the closed ecological system’s water and nutrient cycles. In Australia, for Aboriginal communities, the greening achieved by using constructed wetlands has important health benefits in the community and treated water is used to subsurface irrigate desirable and harvestable native plants. In southern Algeria, vegetation is not only rare but many areas suffer from an increase in salinity because of extensive date plantations using deep fossil water in conditions of very high rates of evaporation. While untreated sewage adds to a worsening water situation and a general health degradation of existing water sources, using constructed wetlands is a proven method to both treat sewage and make it productive. Other values of the approach are that it reduces the use of potable water. Inexpensive wastewater treatment is important to protect potable water from contamination. In remote locations with a shortage of skilled technicians and uncertain electrical supply, systems need to be as easy to maintain as possible. Therefore Wastewater Gardens systems are designed using only gravity-flow water whenever possible. This also makes the systems competitive in price with more conventional sewage treatment facilities, in addition to their numerous value-added features.
Title: Value-Adding Through Creation Of High Diversity Gardens And Ecoscapes In Subsurface Flow Constructed Wetlands: Case Studies In Algeria And Australia Of Constructed Wetland Systems
Authors: M. Nelson, F. Cattin, M. Rajendran, R. Tredwell, L. Hafouda
Journal Name: 1th International Conference on Wetland Systems for Water Pollution Control
Year of Publication: 2008
Page Number: 0
Category: biosphere
Availability: pdf
Detail Page: /papers/77
Web Link: https://ecotechnics.edu/wp-content/uploads/2011/08/India_international-wetland-conf-paper.pdf
BoK Link: [[paper:77]]
Abstract
Two case studies are presented of recent applications of Wastewater Gardens (WWG) - for an Aboriginal community in northwest Australia and in southern Algeria. WWG uses high-diversity of plants in the subsurface flow wetland and in the final subsoil irrigation to value-add through water conservation, prevention of pollution of groundwater and by growing beautiful and when possible valuable plants suited to the climate. Treatment typically averages 90+% reduction of BOD and TSS, 98+% reduction in coliform bacteria and substantial productive uptake of nitrogen and phosphorus. WWG technology was originally developed from the necessity in Biosphere 2 to fully recover and recycle the water and nutrients in wastewater to complete the closed ecological system’s water and nutrient cycles. In Australia, for Aboriginal communities, the greening achieved by using constructed wetlands has important health benefits in the community and treated water is used to subsurface irrigate desirable and harvestable native plants. In southern Algeria, vegetation is not only rare but many areas suffer from an increase in salinity because of extensive date plantations using deep fossil water in conditions of very high rates of evaporation. While untreated sewage adds to a worsening water situation and a general health degradation of existing water sources, using constructed wetlands is a proven method to both treat sewage and make it productive. Other values of the approach are that it reduces the use of potable water. Inexpensive wastewater treatment is important to protect potable water from contamination. In remote locations with a shortage of skilled technicians and uncertain electrical supply, systems need to be as easy to maintain as possible. Therefore Wastewater Gardens systems are designed using only gravity-flow water whenever possible. This also makes the systems competitive in price with more conventional sewage treatment facilities, in addition to their numerous value-added features.