Wastewater treatment. Physical and chemical methods.
D000327:Adsorption; D005374:Filtration; D007220:Industrial Waste; D007474:Ion Exchange; D008722:Methods; D009584:Nitrogen; D009995:Osmosis; D010758:Phosphorus; D012498:Sanitary Engineering; D014876:Water Pollution; D014877:Water Pollution, Chemical
D007220:Industrial Waste; D010758:Phosphorus; D009584:Nitrogen