文档介绍：Chapter 10 Environmental Applications ofMicrobial Produced by Bacteria— Degradable PolyhydroxyalkanoatesWaste Water Treatment?Primary Treatment–physical separations, removing large objects?Secondary Treatment–reduce anic load of the sewage to acceptable levels before releasing it to natural waterways?Tertiary Treatment–a physicochemical process employing precipitation, filtration, and chlorination to sharply reduce the levels of anic nutrients, especially phosphate and nitrate, from the final effluents Waste Water Treatment TechnologyAnoxic sludge digestor (only the top of the tank is shown, the remainder is working of a sludge digestorMajor microbial urring during sludgedigestionAerobic sewage treatment processes: trickling filterAeration tank of an activated sludge installation in a metropolitan sewage treatment plantInner workings of an activated sludge installationA small-scale activated sludge operation used to process dairy waste