Lai, Tien M Wastewater treatment using a modified A2O process based on fiber polypropylene media. [electronic resource] - Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering 2011 - 1068-74 p. digital Publication Type: Journal Article ISSN: 1532-4117 Standard No.: 10.1080/10934529.2011.590382 doi Subjects--Topical Terms: Ammonia--chemistryBiofilmsBiological Oxygen Demand AnalysisNitrogen--chemistryPhosphorus--chemistryPolypropylenes--chemistryWaste Disposal, Fluid--methodsWater Pollutants, Chemical--chemistry