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Overview of mean removal efficiencies during the experimental period. a Chemical oxygen demand. b Ammonium-nitrogen. c Nitrate-nitrogen. d Ortho-phosphate-phosphorus. Mixture 1, 8 mg/l of basic red 46 and 2 mg/l of reactive blue 198; mixture 2, 2 mg/l of basic red 46 and 8 mg/l of reactive blue 198; mixture 3, 5 mg/l of basic red 46 and 5 mg/l of reactive blue 198. AWW artificial wastewater, TW tap water, Pond L Lemna minor L. pond, Pond C control pond
