References

1. H.M. Zou, X.W. Lu, An innovative continuous flow BNR-IC process for nutrients removal and phosphorus recovery from synthetic and real domestic wastewater, J. Environ. Eng. Landscape Manage., 24 (2016) 116–123.
2. A. Jelic, M. Gros, A. Ginebreda, R. Cespedes-Sánchez, F. Ventura, M. Petrovic, D. Barcelo, Occurrence, partition and removal of pharmaceuticals in sewage water and sludge during wastewater treatment, Water Res., 45 (2011) 1165–1176.
3. M. Makowska, M. Spychała, Organic compounds fractionation for domestic wastewater treatment modeling, Polish J. Environ. Stud., 23 (2014) 131–137.
4. I. Pasztor, P. Thury, J. Pulai, Chemical oxygen demand fractions of municipal wastewater for modeling of wastewater treatment, Int. J. Environ. Sci. Technol., 6 (2009) 51–56.
5. J. Struk-Sokołowska, J. Tkaczuk, Analysis of bakery sewage treatment process options based on COD fraction changes, J. Ecol. Eng., 19 (2018) 226–235.
6. S. Myszograj, E. Płuciennik-Koropczuk, A. Jakubaszek, COD fractions – methods of measurement and use in wastewater treatment technology, Civ. Environ. Eng. Rep. (CEER), 24 (2017) 195–206.
7. M. Zawilski, A. Brzezińska, Variability of COD and TKN fractions of combined wastewater, Polish J. Environ. Stud., 18 (2009) 501–505.
8. T. Baczyński, A review of methods for the determination of COD fractions in wastewater, GWiTS, 10 (2010) 29–35 (in Polish).
9. J. Struk-Sokołowska, J. Wiater, J. Rodziewicz, Wastewater organic compounds characterization on the basis of COD fractions, GWiTS, 1 (2016) 14–20 (in Polish).
10. M. Makowska, A. Sowinska, M. Spychała, COD fractionation in municipal sewage system – comparison of determination methods, Q. Environ. Eng. Des. (QEED), 171 (2018) 25–39.
11. Y.-Y. Choi, S.-R. Baek, J.-I. Kim, J.-W. Choi, J. Hur, T.-U. Lee, C.-J. Park, B.-J. Lee, Characteristics and biodegradability of wastewater organic matter in municipal wastewater treatment plants collecting domestic wastewater and industrial discharge, Water, 9 (2017) 409.
12. E. Płuciennik-Koropczuk, S. Myszograj, New approach in COD fractionation methods, Water, 11 (2019) 1484.
13. K. Miksch, J. Sikora, Wastewater Biotechnology, PWN, Warsaw, 2010 (in Polish).
14. J. Smyk, K. Ignatowicz, J. Struk-Sokołowska, COD fractions changes during sewage treatment with constructed wetland, J. Ecol. Eng., 16 (2015) 43–48.
15. E. Płuciennik-Koropczuk, A. Jakubaszek, S. Myszograj, S. Uszakiewicz, COD fractions in mechanical-biological wastewater treatment plant, Annu. Set Environ. Prot., 13 (2011) 1157.
16. K. Chmielowski, P. Bugajski, G. Kaczor, Compositional analysis of the sewage incoming to and discharged from the sewage treatment plant in Kolbuszowa Dolna, J. Ecol. Eng., 17 (2016) 9–16.
17. L.B. Przywara, Assessment of carbon, nitrogen and phosphorus transformations during municipal wastewater treatment, Ecol. Eng., 18 (2017) 142–147.
18. J. Smyk, K. Ignatowicz, COD fractions in the process of mechanical-biological treatment sewage, Ecol. Eng., 45 (2015) 21–26.
19. D. Zdebik, M. Głodniok, The results of studies of wastewater susceptibility on biological decomposition on an example of wastewater treatment plant operated in the sequential-flow technology, Scientific Notebooks of the Zielona Góra Series Environmental Engineering, 141 (2011) 53–64 (in Polish).