Changes in hydrogen ion exponent of sewage sludge in the process of autothermal thermophilic aerobic digestion

• Autorzy: Bartkowska I.

Identyfikatory

DOI

10.12911/22998993.1084175

• Języki publikacji: EN

Abstrakty

EN

This paper presents a study on the evaluation of digested sewage sludge during the process of Autothermal Thermophilic Aerobic Digestion (ATAD), taking place as a three-tank process at a municipal waste water treatment plant in Luban, Poland. ATAD installation was manufactured by FUCHS Enprotec GmbH Mayen-Deutschland. Over the period from June 2006 to February 2010 sewage sludge digested by tha ATAD-Process was examined. The hydrogen ion exponent was measured in every tank. The results obtained indicated changes in the composition of the digesting sludge at successive stages of the process. Over the study period the ATAD-installation was in both a two- and a three-stage process. pH of sludge under study during the process of the thermophilic stabilisation changes and its value grows significantly, with the installation working in a two-stage arrangement from 6,63 to 7,99, and when the installation was operated as a three-stage system from 6,60 to 8,14. The results collected were subject to the statistical analysis. The paper presents conclusions drawn from the study and own experience.

Słowa kluczowe

EN

activated sludge; hydrogen ion exponent; sewage sludge; sludge processing; thermophilic aerobic digestion

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2014
• Tom: Vol. 15, nr 1
• Strony: 32--37
• Opis fizyczny: Bibliogr. 15 poz., tab., rys.

Twórcy

autor

Bartkowska I.

• Chair of Environment Engineering Systems, Technical University in Białystok, Wiejska 45A, 15-351 Białystok, Poland

Bibliografia

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