Measurement of activated sludge particle diameters using laser diffraction method

• Autorzy: Bieganowski A. , Łagód G. , Ryżak M. , Montusiewicz A. , Chomczyńska M. , Sochan A.

Warianty tytułu

PL

Pomiary średnicy cząstek osadu czynnego za pomocą metody dyfrakcji laserowej

• Języki publikacji: EN

Abstrakty

EN

The paper presents a study on the possibility of using the laser diffraction method for measuring the size of the activated sludge particles. Susceptibility of the particles to mechanical disintegration, dependent on the programmed value of stirring intensity, was observed (stirring was caused by required dynamic flow of analysed suspension through the measurement unit). According to the conclusions presented in this paper, it may be assumed that the laser diffraction method can be applied for measurement of activated sludge particle diameters under the following conditions: 1) the size of activated sludge particles measured by the laser diffraction method is not a real value, but after standardisation of measurement conditions can be treated as a parameter describing the sludge; 2) the particle diameters of activated sludge should be stabilised before the measurement, eg by mixing in the measurement unit or by ultrasound waves application.

PL

Praca dotyczy oceny możliwości wykorzystania dyfrakcji laserowej do badania rozmiarów kłaczków osadu czynnego. W czasie pomiarów zaobserwowano podatność analizowanych cząstek na zniszczenie mechaniczne zależną od zaprogramowanej intensywności mieszania (mieszanie i przepompowywanie jest wymagane w celu wymuszenia przepływu analizowanych zawiesin przez układ pomiarowy). Na podstawie wniosków opracowanych na podstawie prowadzonych badań można stwierdzić, iż metoda dyfrakcji laserowej może być stosowana do pomiarów rozmiarów kłaczków osadu czynnego pod następującymi warunkami: rozmiary kłaczków oraz pozostałych elementów osadu czynnego uzyskane w czasie pomiarów nie mogą być traktowane jako wartość bezpośrednia opisująca rozmiary kłaczka, lecz po standaryzacji warunków pomiarowych może być traktowana jako ilościowy parametr opisujący właściwości osadu czynnego. Przed pomiarem metodą dyfrakcji laserowej osad czynny powinien być uprzednio stabilizowany na przykład za pomocą mieszania w układzie pomiarowym bądź też za pomocą ultradźwięków.

Słowa kluczowe

EN

laser diffraction method; activated sludge particles diameter

PL

metoda dyfrakcji laserowej; średnica cząstek osadu czynnego

• Wydawca: Towarzystwo Chemii i Inżynierii Ekologicznej
• Czasopismo: Ecological Chemistry and Engineering. S
• Rocznik: 2012
• Tom: Vol. 19, nr 4
• Strony: 597--608
• Opis fizyczny: Bibliogr. 49 poz., rys., tab.

Twórcy

autor

Bieganowski A.

autor

Łagód G.

autor

Ryżak M.

autor

Montusiewicz A.

autor

Chomczyńska M.

autor

Sochan A.

• Institute of Agrophysics, Polish Academy of Sciences, ul. Doświadczalna 4, 20-290 Lublin, Poland, phone [phone], fax [phone],

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