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Influence of Cellulose on the Anoxic Treatment of Domestic Wastewater in Septic Tanks: Statistical Analysis of the Chemical and Physico-Chemical Parameters

Author

Listed:
  • Denisa Djordjevićová

    (AdMaS Research Centre, Faculty of Civil Engineering, Brno University of Technology, Purkyňova 651/139, 612 00 Brno, Czech Republic)

  • Marco Carnevale Miino

    (AdMaS Research Centre, Faculty of Civil Engineering, Brno University of Technology, Purkyňova 651/139, 612 00 Brno, Czech Republic)

  • Jakub Raček

    (AdMaS Research Centre, Faculty of Civil Engineering, Brno University of Technology, Purkyňova 651/139, 612 00 Brno, Czech Republic)

  • Petr Hlavínek

    (AdMaS Research Centre, Faculty of Civil Engineering, Brno University of Technology, Purkyňova 651/139, 612 00 Brno, Czech Republic)

  • Tomáš Chorazy

    (AdMaS Research Centre, Faculty of Civil Engineering, Brno University of Technology, Purkyňova 651/139, 612 00 Brno, Czech Republic)

  • Vladana Rajaković-Ognjanović

    (Laboratory for Water Quality, Belgrade Faculty of Civil Engineering, Bulevar kralja Aleksandra 73, 11000 Belgrade, Serbia)

  • Nada Cvijetić

    (Laboratory for Water Quality, Belgrade Faculty of Civil Engineering, Bulevar kralja Aleksandra 73, 11000 Belgrade, Serbia)

Abstract

Cellulose is a very common polymer in domestic wastewater (WW), representing a not negligible part of the organic substance contained in sewage. To date, many studies have highlighted the feasibility of reusing this compound in several ways (e.g., building sector, wastewater treatment, energy production, etc.) after its separation from domestic WW. However, studies about the impact of the absence of cellulose on the chemical and physico-chemical parameters of a biological process are still lacking. In this work, two pilot-scale plants were used to simulate an anoxic treatment of WW in septic tanks, with and without cellulose (CWW and NCWW, respectively), for three months. The results of the monitoring highlighted that T, pH, and electrical conductivity (EC) remained almost constants, in both cases. The Spearman correlation coefficients (SCC) for turbidity (TUR), total suspended solids (TSS), and color (COL) indicated a higher removal in the case of CWW (65%, 66%, and 56%, respectively). Organic substance and nitrogen forms showed a similar behavior with and without cellulose, but in the case of CWW, N-NH 3 was highly negatively correlated with TUR (SCC: −0.54), TSS (−0.49), and COL (−0.39). A biological denitrification process was highlighted in both cases. Despite these differences, when statistically analyzing the trends of the chemical and physico-chemical parameters for CWW and NCWW, a significant difference due to the absence of cellulose was excluded. These results will be useful to the scientific community, as they exclude that the operational parameters of anoxic treatments and the effectiveness on pollutants removal can be affected in the case of preliminary cellulose separation from domestic WW for recovery/reuse purposes.

Suggested Citation

  • Denisa Djordjevićová & Marco Carnevale Miino & Jakub Raček & Petr Hlavínek & Tomáš Chorazy & Vladana Rajaković-Ognjanović & Nada Cvijetić, 2023. "Influence of Cellulose on the Anoxic Treatment of Domestic Wastewater in Septic Tanks: Statistical Analysis of the Chemical and Physico-Chemical Parameters," Sustainability, MDPI, vol. 15(10), pages 1-14, May.
  • Handle: RePEc:gam:jsusta:v:15:y:2023:i:10:p:7990-:d:1146398
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    References listed on IDEAS

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    1. Ewa Wiśniowska & Mariusz Kowalczyk, 2022. "Recovery of Cellulose, Extracellular Polymeric Substances and Microplastics from Sewage Sludge: A Review," Energies, MDPI, vol. 15(20), pages 1-11, October.
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    Cited by:

    1. Denisa Djordjevićová & Marco Carnevale Miino & Jakub Raček & Tomáš Chorazy & Petr Hlavínek & Zuzana Vranayova, 2024. "Separation of Cellulose from Wastewater and Valorisation via Pyrolysis: A Case Study in the Czech Republic," Resources, MDPI, vol. 13(4), pages 1-11, April.

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