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 .
C0043393
yeasts
C0016832
fungi