In situ nutrient removal from aquaculture wastewater by aquatic vegetable Ipomoea aquatica on floating beds
Data(s) |
2009
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Resumo |
Nutrient-rich effluents caused rising concern due to eutrophication of aquatic environment by utilization of a large amount of formula feed. Nutrient removal and water quality were investigated by planting aquatic vegetable on artificial beds in 36-m(2) concrete fishponds. After treatment of 120 days, 30.6% of total nitrogen (TN) and 18.2% of total phosphorus (TP) were removed from the total input nutrients by 6-m(2) aquatic vegetable Ipomoea aquatica. The concentrations of TN, TP, chemical oxygen demand (COD) and chlorophyll a in planted ponds were significantly lower than those in non-planted ponds (P<0.05). Transparency of water in planted ponds was much higher than that of control ponds. No significant differences in the concentration of total ammonia nitrogen (TAN), nitrate nitrogen (NO3-N) and nitrite nitrogen (NO2--N) were found between planted and non-planted ponds. These results suggested that planting aquatic vegetable with one-sixth covered area of the fishponds could efficiently remove nutrient and improve water quality. Nutrient-rich effluents caused rising concern due to eutrophication of aquatic environment by utilization of a large amount of formula feed. Nutrient removal and water quality were investigated by planting aquatic vegetable on artificial beds in 36-m(2) concrete fishponds. After treatment of 120 days, 30.6% of total nitrogen (TN) and 18.2% of total phosphorus (TP) were removed from the total input nutrients by 6-m(2) aquatic vegetable Ipomoea aquatica. The concentrations of TN, TP, chemical oxygen demand (COD) and chlorophyll a in planted ponds were significantly lower than those in non-planted ponds (P<0.05). Transparency of water in planted ponds was much higher than that of control ponds. No significant differences in the concentration of total ammonia nitrogen (TAN), nitrate nitrogen (NO(3)-N) and nitrite nitrogen (NO(2)(-)-N) were found between planted and non-planted ponds. These results suggested that planting aquatic vegetable with one-sixth covered area of the fishponds could efficiently remove nutrient and improve water quality. Modern Agro-industry Technology Research System ; Key Science and Technology Project of Hubei Province [2006AA203A01] |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Li, Wenxiang; Li, Zhongjie.In situ nutrient removal from aquaculture wastewater by aquatic vegetable Ipomoea aquatica on floating beds,WATER SCIENCE AND TECHNOLOGY,2009,59(10):1937-1943 |
Palavras-Chave | #Engineering, Environmental; Environmental Sciences; Water Resources #aquaculture #aquatic vegetable #Ipomoea aquatica #nutrient removal |
Tipo |
期刊论文 |