Adaptation of the Activated Sludge to the Digestate Liquors During the Nitrification and Denitrification Processes

• Autorzy: Majtacz J. , Kowal P. , Lu X. , Al-Hazmi H. , Mąkinia J.

Identyfikatory

DOI

10.12911/22998993/75762

• Języki publikacji: EN

Abstrakty

EN

The activated sludge process of the digestate liquors after chemical separation was conducted using a 10 L lab-scale sequencing batch reactor (SBR) and a 0.50 m³ pilot-scale SBR independently (with pH control). Due to the relatively high concentration of free ammonia (FA), clear inhibitory effects of the digestate liquors on the nitrifying bacteria were observed. The adaptation of the activated sludge to the toxicity was evaluated with the trends of ammonia uptake rate (AUR) and nitrate utilization rate (NUR). The lab-scale AUR values decreased from 5.3 to 2.6 g N/(kg VSS·h) over time after the addition of digestate liquors (5–10% of the reactor working volume), indicating an apparent FA inhibition on the nitrification process in the FA concentration range of 0.3–0.5 mg N/L. The pilot-scale AUR values increased from 1.8 to 3.6 g N/ (kg VSS·h) in the first two weeks and then decreased to 2.4 g N/(kg VSS·h), showing a lag of the inhibition on the nitrifying bacteria at the FA concentration ≈ 0.15 mg N/L. The lab-scale NURs increased from 2.6 to 10.4 g N/(kg VSS·h) over time, and the pilot-scale NURs increased from 1.0 to 4.0 g N/(kg VSS·h) in a similar pattern. The clear dependence of both the lab- and pilot-scale NURs on time indicated the adaptation of the heterotrophic biomass to the digestate liquors. Ethanol – used instead of fusel oil – was found to be a more efficient external carbon source for better adaptation of the activated sludge under unfavorable conditions.

Słowa kluczowe

EN

digestate liquors; activated sludge; free ammonia; adaptation; inhibition

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2017
• Tom: Vol. 18, nr 5
• Strony: 104--109
• Opis fizyczny: Bibliogr. 12 poz., tab., rys.

Twórcy

autor

Majtacz J.

• Faculty of Civil and Environmental Engineering, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233, Gdansk, Poland

autor

Kowal P.

• Faculty of Civil and Environmental Engineering, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233, Gdansk, Poland

autor

Lu X.

• Faculty of Civil and Environmental Engineering, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233, Gdansk, Poland
• Institute of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China

autor

Al-Hazmi H.

• Faculty of Civil and Environmental Engineering, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233, Gdansk, Poland

autor

Mąkinia J.

• Faculty of Civil and Environmental Engineering, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233, Gdansk, Poland

Bibliografia

• 1. Anthonisen, A.C., Loehr, R.C., Prakasam, T.B.S., Srinath, E.G., 1976. Inhibition of Nitrification by Ammonia and Nitrous Acid. J. (Water Pollut. Control Fed. 48, 835–852.
• 2. Bernat, K., Kulikowska, D., Zielińska, M., Cydzik- Kwiatkowska, A., Wojnowska-Baryła, I., 2011. Nitrogen removal from wastewater with a low COD/N ratio at a low oxygen concentration. Bioresour. Technol. 102, 4913–4916. doi:10.1016/j. biortech.2010.12.116
• 3. Cotman, M., Gotvajn, A.Ž., 2010. Comparison of different physico-chemical methods for the removal of toxicants from landfill leachate. J. Hazard. Mater. 178, 298–305. doi:10.1016/j. jhazmat.2010.01.078
• 4. Czerwionka, K., Luczkiewicz, A., Majtacz, J., Kowal, P., Jankowska, K., Ciesielski, S., Pagilla, K., Makinia, J., 2014. Acclimation of denitrifying activated sludge to a single vs. complex external carbon source during a start-up of sequencing batch reactors treating ammonium-rich anaerobic sludge digester liquors. Biodegradation 25, 881– 892. doi:10.1007/s10532–014–9707–0
• 5. Daigger G. T. 2014. Ardern and Lockett remembrance. W: Jenkins D., Wanner J. (edit.) Activated sludge–100 years and counting (p. 1–15). London. IWA Publishing.
• 6. Gong, L., Huo, M., Yang, Q., Li, J., Ma, B., Zhu, R., Wang, S., Peng, Y., 2013. Performance of heterotrophic partial denitrification under feast-famine condition of electron donor: A case study using acetate as external carbon source. Bioresour. Technol. 133, 263–269. doi:10.1016/j.biortech.2012.12.108
• 7. Holm-Nielsen, J.B., Al Seadi, T., Oleskowicz-Popiel, P., 2009. The future of anaerobic digestion and biogas utilization. Bioresour. Technol. 100, 5478– 5484. doi:10.1016/j.biortech.2008.12.046
• 8. Jaroszynski, L.W., 2012. The Influence of Nitrite and Free Ammonia on Nitrogen Removal Rates in Anoxic Ammonium Oxidation Reactors.
• 9. Møller, H.B., Nielsen, A.M., Andersen, G.H., Nakakubo, R., 2006. Process performance of biogas plants integrating pre-separation of manure, in: 12th Ramiran International Conference.
• 10. Onay, T.T., Pohland, F.G., 1998. In situ nitrogen management in controlled bioreactor landfills. Water Res. 32, 1383–1392. doi:10.1016/ S0043–1354(97)00392–8
• 11. Turk O., Mavinic D.S., 1989. Stability of nitrite build-up in an activated sludge system. J.W.P.C.F. 61, 1440–1448.
• 12. Zhu, R. long, Wang, S. ying, Li, J., Wang, K., Miao, L., Ma, B., Gong, L. Xiao, Peng, Y. Zhen, 2013. Effect of influent C/N ratio on nitrogen removal using PHB as electron donor in a post-denitritation SBR. J. Chem. Technol. Biotechnol. 88, 1898–1905. doi:10.1002/jctb.4047