Co-digestion of sewage sludge and mature landfill leachate in pre-bioaugmented system

• Autorzy: Montusiewicz A.

Identyfikatory

DOI

10.12911/22998993.1125463

• Języki publikacji: EN

Abstrakty

EN

The study examined the effects of co-digestion of sewage sludge and mature landfill leachate at the volumetric ratio of 95:5% in primarily bioaugmented system. Bioaug-mentation was carried out with the use of commercial product Arkea® in the volumet-ric dose of 5% and lasted three months prior to the co-digestion start-up. Co-digestion was undergone without bioaugmentation. The results indicated that in the first period (of three months) following bioaugmentation, co-digestion led to biogas/methane yields only 5-8% lower as compared to anaerobic digestion of sewage sludge, and the differences were not statistically significant. Moreover, a comparable value of vola-tile solids removal was obtained. However, the effects became worse over time, i.e. a lower organics removal efficiency of 16% as well as 9.5–13% decreases of biogas/ methane yields were achieved by applying co-digestion for a further period (of the same duration). Co-digestion of sewage sludge and mature landfill leachate could be recognized as quite efficient in the system that was primarily bioaugmented with the use of Arkea®. However, the beneficial impact of bioaugmentation remained for the limited period of three months after its completion. To sustain the favourable effects a periodical, repeatable bioaugmentation of the co-digestion system is required.

Słowa kluczowe

EN

anaerobic co-digestion; primary bioaugmentation; sewage sludge; mature landfill leachate; biogas/methane yields

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2014
• Tom: Vol. 15, nr 4
• Strony: 98--104
• Opis fizyczny: Bibliogr. 18 poz., tab., rys.

Twórcy

autor

Montusiewicz A.

• Faculty of Environmental Engineering, Lublin University of Technology, Nadbystrzycka 40B, 20-618 Lublin, Poland

Bibliografia

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