Nutrient removal by different plants in wetland roof systems treating domestic wastewater

Autor: Bui Xuan Thanh, Vo Thanh Hang, Phan Thi Hai Van, Nguyen Thanh Tin, Thai Minh Quan, Eugene Kwon, Jingyong Jung, Le Van Khoa, Injae Yoon, Sijin Lee, Dinh Quoc Tuc, Changgyu Park, Nguyen Duc Luong, Vo Le Phu, Nguyen Thanh Son, Nguyen Phuoc Dan, Vo Thi Dieu Hien
Rok vydání: 2014
Předmět:
Zdroj: Desalination and Water Treatment. 54:1344-1352
ISSN: 1944-3986
1944-3994
DOI: 10.1080/19443994.2014.915767
Popis: This study evaluated nutrients removal from domestic wastewater by five plants in wetland roof systems (WR). The study plants include Arachis duranensis (1), Evolvulus alsinoides (2), Cosmos Bipinnuatus (3), Cyperus alternifolius Linn (4), and Philodendron hastatum (5). The WRs were acclimatized at hydraulic loading rates (HLR) of 220 m3/ha d and operated at HLR of 300 m3/ha d. The plants (1), (2), (4), and (5) had the ability to grow under the rooftop conditions with domestic wastewater as a nutrient source while the plant (3) was not suitable and dead after 20 d of operation. Generally, A. duranensis (1) and C. alternifolius Linn (4) were the most suitable plants treating domestic wastewater under the conditions of WR. The average phosphorus removal efficiencies of (1) and (4) were approximately 75 and 89%, respectively, while the average nitrogen removal efficiencies were 69 and 92%. The phosphorus accumulation in plants (1) and (4) during operation was 20.4 and 29.4%, respectively, while the n...
Databáze: OpenAIRE