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The dynamics of biological reduction of phosphorus and nitrogen compounds in the UCT model system

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Czerska B., Miksch K., Surmacz-Gorska J., Debkowska Z.

Biotechnologia

1993

issue 3

108-115

Investigations on dynamics of and reduction in the system were conducted. After three-week adaptation period, population of activated sludge microorganisms indicated capacity for excessive phosphorus uptake. Source of carbon in synthetic nutrient medium was then sodium acetate (0,5g/l), the concentration of PO4 - 30 mg/l and the NH4 concentration - 60mg/l. At the second stage of the studies the PO3/4 concentration was 15 mg/l in inflow., with increased up to 40 mg/l under anaerobic conditions and decreased to 0,5-1,5 mg/l under aerobic conditions. Togrether wiyth conversions of phosphorus compounds, nitrification processes occurred under aerobioc conditions (12,10-23,15 mg/l) and dentrification in an anoxic reactor (0,1 - 9,5 mg/l). Intensity of the phosphorus and nirogen conversions depended upon biomass loading, degree of recirulation and retention times in the reactors.

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1 Biotechnologia

1 1993

1 Czerska B.

1 Debkowska Z.

1 Miksch K.

1 Surmacz-Gorska J.

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The dynamics of biological reduction of phosphorus and nitrogen compounds in the UCT model system