[Selection and biochemical activity of a microbial biocenosis in the process of concentrated sewage treatment].
A bacterial cenosis responsible for the destruction of organic wastes having a complex composition was selected under the conditions of continuous cultivation on highly concentrated industrial sewage. Most of the bacterial species and all of the yeasts and fungi were eliminated from the original microflora when the concentration of the purified sewage was increased from 2 to 12 g O2 per litre (in terms of the overall chemical oxygen uptake, COU) and the dilution rate (D) varied from 0.08 to 0.25 h-1. The number of species was reduced to 10 in the cenosis. The degree of oxidation of organic compounds in the sewage was 94 to 97% at the maximal parameters of the process. The specific rate of oxidation as well as the respiration and dehydrogenase activities increased with a rise in both COU and D. The highest biochemical activity was observed at D=0.25 h-1:
D001419:Bacteria / Q000378:metabolism; D001673:Biodegradation, Environmental; D002617:Chemical Industry; D005658:Fungi / Q000378:metabolism; D007220:Industrial Waste; D010084:Oxidation-Reduction; D010795:Phthalic Acids / Q000138:chemical synthesis; D012641:Selection, Genetic; D012988:Soil Microbiology; D015003:Yeasts / Q000378:metabolism
D007220:Industrial Waste; D010795:Phthalic Acids; C011363:terephthalic acid
Selektsiia i biokhimicheskaia aktivnost' mikrobnogo soobshchestva v protsesse ochistki kontsentrirovannykh stochnykh vod.