Characteristic of granulated activated sludge fed with glycerin fraction from biodiesel production

• Autorzy: Cydzik-Kwiatkowska A. , Białowiec A. , Wojnowska-Baryła I. , Smoczyński L.

Warianty tytułu

PL

Charakterystyka osadu czynnego granulowanego hodowanego na frakcji glicerynowej z produkcji biodiesla

• Języki publikacji: EN

Abstrakty

EN

In the presented research glycerin fraction from biodiesel industry was used for granulated aerobic activated sludge production in a typical sequencing batch reactor (h/d equal 2.1). After 7 weeks of operation, granulated activated sludge with SVI at the level of 40-50 cm^3g^-1 was obtained. At organic compounds load of 1.43 š 0.1 mg COD-mg VSS^-1d ^-1, the efficiency of carbon removal was 94.14 š 2.7% and most of the introduced COD was removed during the first 2-3 hours of aeration. The sieve analysis revealed that 60% (w/w) of biomass consisted of particles with a diameter in the range of 4-8 mm. A free settling test procedure proved that granules with a diameter between 2-4 mm were numerically most abundant in biomass (32.3%) and thai the settling volume, mass and Reynolds number values significantly (p < 0.05) increased parallel with increasing granule diameter. Adverse tendency was observed for the mean effective, buoyant density of a granule in a liquid.

PL

Osad czynny granulowany hodowano z wykorzystaniem frakcji glicerynowej powstałej przy produkcji biodiesla. Po 7 tygodniach hodowli w warunkach tlenowych w reaktorze SBR (h/d - 2,1) uzyskano granulowany osad czynny charakteryzujący się indeksem osadu na poziomie 40-50 cm^3-g^-1. W warunkach hodowli przy obciążeniu osadu czynnego ładunkiem zanieczyszczeń na poziomie 1,43 i 0,1 g ChZT-g sm-d^-1, efektywność usuwania związków węglowych wyniosła 94,14 š 2,7%. Analiza sitowa wykazała, że około 60% masy osadu czynnego stanowiły granule o średnicy 4-8 mm. Równolegle na podstawie testu swobodnego opadania wyznaczono ilościowy udział granul o różnych średnicach w osadzie czynnym granulowanym. Stwierdzono, że granule o średnicy 2-5 mm stanowiły najliczniejszą trakcje tj. około 32% wszystkich granul osadu czynnego. Prędkości opadania, masy oraz wartości liczby Reynoldsa dla granul znacząco wzrastały (p<0.05) wraz ze wzrostem ich średnicy. Obserwowano, że wraz. ze spadkiem średnicy granul następował wzrost ich średniej gęstości w cieczy.

Słowa kluczowe

EN

Glycerin fraction from biodiesel production; granulated activated sludge; free settling test; waste treatment

PL

osad czynny granulowany; frakcja glicerynowa; test swobodnego opadania

• Wydawca: Institute of Environmental Engineering, Polish Academy of Sciences
• Czasopismo: Archives of Environmental Protection
• Rocznik: 2009
• Tom: Vol. 35, no. 2
• Strony: 41--52
• Opis fizyczny: bibliogr. 29 poz., tab., wykr.

Twórcy

autor

Cydzik-Kwiatkowska A.

autor

Białowiec A.

autor

Wojnowska-Baryła I.

autor

Smoczyński L.

• University of Warmia and Mazury in Olsztyn, Department of Environmental Biotechnology ul. Słoneczna 45G, 10-957 Olsztyn-Kortowo, Poland,

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