constructed wetlands


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constructed wetlands

A system of artificially created marshy-type areas of vegetation with frequent flooding, designed to treat wastewater through natural biological processes. The Environmental Protection Agency is a strong proponent of this method of cleaning water and has many additional resources on its Web site at www.epa.gov;search on “constructed wetlands.”

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Restorers are different from constructed wetlands in other ways, too.
Although it was once thought that wetland plant roots would provide sufficient oxygen to oxidize ammonia, it is now clear that the root zone in passive constructed wetlands is best viewed as at least a partially anaerobic system (Kadlec & Wallace, 2008).
After setting out the concepts of appropriate technologies for treating municipal wastewater, they discuss such aspects of design as rotating microscreens, treatment in stabilized lagoons, sub-surface flow constructed wetlands, complementary processes to combine with appropriate technology processes, and global warming and wastewater treatment impact on climate.
She said that initial lab-scale studies have proved that Constructed wetlands, Dual digestion system and Trickling filter system technologies can be treat domestic wastewater to such an extent that it can be used for irrigational purposes.
Some specific topics covered include ecomaterials imperatives in developed and newly industrialized nations, constructed wetlands for the treatment of highway runoff, ecosystem service payments to participating landowners, factors affecting deforestation in India's Deccan Plateau, and the fate of pesticides in the environment.
Common reed (Phragmites australis) is used in constructed wetlands purifying municipal wastewater consisting of heavy metals [3,10,18].
For example, the Pyramid Lake Paiute Tribe was awarded $35,000 to reduce nitrogen loading on the Truckee River through a constructed wetlands project.
Another winning feature is the surrounding constructed wetlands.
Construction costs for constructed wetlands are relatively low.
Parks' current research focuses on the development of sustainable water treatment technologies such as constructed wetlands and natural media filtration.
This [complex of marshes] is the largest constructed wetlands in the world," says Aumen.
The stations are part of the Everglades Construction Project which calls for a combination of constructed wetlands, canals, levees and pumping stations designed to reduce nutrients in storm-water runoff from the Everglades Agricultural Area.