|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|6301536||1618011||2016||5 صفحه PDF||سفارش دهید||دانلود رایگان|
To reduce the loading of nitrogenous compounds under low temperature conditions (4.3-9.2Â Â°C), we used two floating constructed wetlands (FCWs), assembled from either rice straw (FCW-RS) or light ceramsite (FCW-LC) as a substrate for microorganisms and macrophytes. Under batch conditions, the concentrations of total nitrogen (TN), ammonium nitrogen (NH4+N), nitrate nitrogen (NO3âN) and nitrite nitrogen (NO2âN) in raw water were 1.32-2.97, 0.50-1.32, 0.41-1.10, and 0.18-1.24Â mg/L. The average removal rates of TN, NO3âN and NH4+N after 7Â d using FCW-RS and FCW-LC were 78.2%, 62.1%, 81.2% and 65.5%, 42,2%, 71.6%, respectively. Both the FCW-RS and FCW-LC systems proved to be proficient in nitrogenous compounds removal, and FCW-RS showed less NO2âN accumulation.
Journal: Ecological Engineering - Volume 88, March 2016, Pages 77-81