- Tytuł:
-
Ocena wpływu parametrów operacyjnych i występowania bakterii nitkowatych na objętościowy indeks osadu czynnego – studium przypadku
Evaluation of the Impact of Operational Parameters and Particular Filamentous Bacteria on Activated Sludge Volume Index – a Case Study - Autorzy:
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Bezak-Mazur, E.
Stoińska, R.
Szeląg, B. - Powiązania:
- https://bibliotekanauki.pl/articles/1818073.pdf
- Data publikacji:
- 2016
- Wydawca:
- Politechnika Koszalińska. Wydawnictwo Uczelniane
- Tematy:
-
bakterie nitkowate
objętościowy indeks osadu
regresja logistyczna
filamentous bacteria
sludge volume index
logistic regression - Opis:
- Sludge sedimentation depends on various factors like: air temperature, quality of wastewater (BOD), characteristics of a bioreactor (sludge age, oxygen concentration in nitrification chamber, recirculation rate, concentration of sludge in a bioreactor), dosage of coagulants for phosphorus removal and a presence of filamentous bacteria. However, still there is a lack of a mathematical model that would established the dependency between all these inputs, because of their number, and sludge sedimentation. In the presented study, such model is proposed, moreover its structure allows for a direct interpretation of its parameters, making it especially useful for operators of treatment plants. The article presents the application of the logistic regression for the estimation of sludge sedimentation potential, using the characteristic of the sludge (concentration and temperature) in a respect of the presence of filamentous bacteria. The sludge deterioration was measured using a threshold a value of the Sludge Volume Index (SVI = 150 mg/dm3). Results suggests that Sphaerotilus natans and Nostocoida sp. bacteria are the most noticeable factor for the sludge deterioration and the sediment potential.
- Źródło:
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Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 2; 480-491
1506-218X - Pojawia się w:
- Rocznik Ochrona Środowiska
- Dostawca treści:
- Biblioteka Nauki
Artykuł