Evaluating the performance and membrane fouling of a submerged membrane bioreactor (MBR) treating plywood industry wastewater

Autor: Guilherme Gavlak, André Aguiar Battistelli, Carlos Raphael Pedroso, Carlos Magno de Sousa Vidal, Kely Viviane de Souza
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Water Science and Technology, Vol 89, Iss 1, Pp 187-198 (2024)
Druh dokumentu: article
ISSN: 0273-1223
1996-9732
DOI: 10.2166/wst.2023.416
Popis: This study evaluates the performance of a membrane bioreactor (MBR) for treating wastewater from the laminated plywood industry. To this end, a pilot-scale MBR was operated for 60 days with a hydraulic retention time of 20 h and a solid retention time of 20 days. The reactor's performance was assessed based on the removal of chemical oxygen demand (COD), phenol, turbidity, and apparent color. Furthermore, we monitored the solids content, dissolved oxygen concentration, and pH of the mixed liquor, as well as the progression of the transmembrane pressure (TMP). The wastewater exhibited a COD/biochemical oxygen demand (BOD) ratio of 5.5, suggesting low biodegradability, usually when this ratio is higher than 4.0. Nevertheless, it was observed that the MBR's performance was stable and satisfactory, with average removal efficiencies of 98% for COD, 70% for phenol, 99% for turbidity, and 93% for true color. The evolution of TMP indicated gradual membrane fouling; however, the operational limit of 0.6 bar was not reached during the study period. In conclusion, the utilization of MBR presents a promising approach to mitigate the environmental impacts associated with wastewater from the laminated plywood industry. HIGHLIGHTS This work addresses a gap in knowledge by studying the applicability of MBRs in treating effluents from the laminated plywood industry, standing out as a significant reference for researchers and industry professionals.; The study employed a pilot-scale membrane bioreactor to treat the laminated plywood industry effluent, showcasing impressive removal efficiencies for COD, phenol, turbidity, and true color.;
Databáze: Directory of Open Access Journals
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