Wpływ sposobu prowadzenia fermentacji osadów ściekowych na produkcję biogazu

• Autorzy: Dąbrowska L.

Warianty tytułu

EN

Influence of Different Digestion of Sewage Sludge on Biogas Production

• Języki publikacji: PL

Abstrakty

EN

The aim of this study was to determine the influence of different processes of biochemical stabilization of sewage sludge on the following: biogas production, decomposition of organic matter, transfer of heavy metal ions to the liquid phase of sludge. The stabilization processes of interest in this work were: methane thermophilic digestion (55°C), mesophilic digestion (37°C), mesophilic digestion of thermophilically hydrolyzed sludge. To characterize biogas production in bioreactors, modified Gompertz equation was used. Higher biogas yields were obtained during thermophilic digestion, compared to the yields obtained under mesophilic conditions – 1.01 and 0.91 dm^-3 from 1 g of the removed dry organic matter of sludge, respectively. Mesophilic digestion of thermophilically hydrolyzed sludge provided the highest biogas production, approximately 1.15 dm^-3 from 1 g of the removed dried organic matter of sludge. A comparable degree of organic matter degradation was observed for all digestion processes, 35–41%. CH₄ content in biogas during sludge mesophilic digestion, excluding 1st day, amounted to 59–64%, while during thermophilic digestion – 57–62%. Higher value of biogas production velocity coefficient while intensive growth phase of mixed microbes population (1.11 dm^-3/d), during preliminary hydrolyzed sludge stabilization, in comparison to non-hydrolyzed sludge (0.87 dm^-3/d), indicates the possibility of obtaining higher biogas production. Therefore it would be more beneficial to conduct mesophilic digestion of sludge which was preliminarily hydrolyzed at temperature of 55°C. The application of thermophilic digestion did not significantly influence the release of heavy metal ions to the stabilized sludge liquid. The concentration of zinc in the liquid was below 0.8 mg/ dm^-3 during digestion. The concentration of the other metals was below 0.2 mg/ dm^-3 for all digestion processes.

Słowa kluczowe

PL

biogaz; osady ściekowe; hydroliza termofilowa; fermentacja

EN

biogas; sewage sludge; digestion; thermophilic hydrolysis

• Wydawca: Politechnika Koszalińska
• Czasopismo: Rocznik Ochrona Środowiska
• Rocznik: 2015
• Tom: Tom 17, cz. 2
• Strony: 943--957
• Opis fizyczny: Bibliogr. 16 poz., tab., rys.

Twórcy

autor

Dąbrowska L.

• Politechnika Częstochowska

Bibliografia

• 1. Appels L., Baeyens J., Degreve J., Dewil R.: Principles and potential of the anaerobic digestion of waste-activated sludge. Progress in Energy and Combustion Science, 34, 755–781 (2008).
• 2. Bartoszewski K., Kurbiel J.: Oczyszczanie ścieków komunalnych i przemysłowych w wielkich miastach. [w:] Gospodarka komunalna w miastach, pod red. R. Zarzyckiego, PAN, Łódź, 189–213 (2001).
• 3. Carballa M., Omil F., Lema J.M.: Influence of different pretreatments on anaerobically digested sludge characteristics: Suitability for final disposal. Water, Air and Soil Pollution, 199, 311–321 (2009).
• 4. Carrère H., Dumas C., Battimelli A., Batstone D.J., Delgenès J.P., Steyer J.P., Ferrer I.: Pretreatment methods to improve sludge anaerobic degradability: A review. Journal of Hazardous Materials, 183, 1–15 (2010).
• 5. Chen Y., Cheng J.J., Creamer K.: Inhibition of anaerobic digestion process: A review. Bioresource Technology, 99, 4044–4064 (2008).
• 6. Dymaczewski Z., Oleszkiewicz J.A., Sozański M.M. (red.): Poradnik eksploatatora oczyszczalni ścieków. Wyd. PZITS, Poznań (1997).
• 7. Haled A., Arched M., Anjou M., Manhood T., Dawson L.: The anaerobic digestion of solid organic waste. Waste Management, 31, 1737–1744 (2011).
• 8. Heinrich Z., Nieścier A.: Stabilizacja beztlenowa osadów ściekowych. Seria: Wodociągi i Kanalizacja, 4, Wyd. PZITS, Warszawa (1999).
• 9. Janosz-Rajczyk M. (red.): Badania wybranych procesów oczyszczania ścieków. Wyd. Politechniki Częstochowskiej, Częstochowa (2008).
• 10. Ledakowicz S., Krzystek L.: Wykorzystanie fermentacji metanowej w utylizacji odpadów przemysłu rolno-spożywczego. Prace Przeglądowe, Biotechnologia, 70, 165–183 (2005).
• 11. Malina J.F., Jr., Poland F.G.: Design of anaerobic processes for the treatment of industrial and municipal wastes. (Vol. 7), Techromic, Publishing Co., Lancaster (1992).
• 12. Nges I.A., Liu J.: Effects of solid retention time on anaerobic digestion of dewatered-sewage sludge in mesophilic and thermophilic conditions. Renewable Energy, 35, 2200–2206 (2010).
• 13. Norma PN-EN ISO 11734: Jakość wody. Oznaczanie „całkowitej” biodegradacji beztlenowej związków organicznych w osadzie przefermentowanym (2003).
• 14. Ortega L., Barrington S., Guiot S.R.: Thermophilic adaptation of a mesophilic anaerobic sludge for food waste treatment. Journal of Environmental Management, 88, 517–525 (2008).
• 15. Song Y.C., Kwon S.J., Woo J.H.: Mesophilic and thermophilic temperature co-phase anaerobic digestion compared with single-stage mesophilic – and thermophilic digestion of sewage sludge. Water Research, 38, 1653– 1662 (2004).
• 16. Zhu B., Gikas P., Zhang R., Lord J., Jenkins B., Li X.: Characteristics and biogas production potential of municipal solid wastes pretreated with a rotary drum reactor. Bioresource Technology, 100, 1122–1129 (2009).