The ecological approach to the study of activated sludge.
D001419:Bacteria / Q000378:metabolism; D004463:Ecology; D056890:Eukaryota / Q000378:metabolism; D005658:Fungi / Q000378:metabolism; D007220:Industrial Waste; D007448:Invertebrates / Q000378:metabolism; D012722:Sewage
D007220:Industrial Waste; D012722:Sewage