Bioaugmented biological contact oxidation reactor for treating simulated textile dyeing wastewater.
Bioresour Technol
; 404: 130916, 2024 Jul.
Article
em En
| MEDLINE
| ID: mdl-38823560
ABSTRACT
In this study, modified polyamide fibers were used as biocarriers to enrich dense biofilms in a multi-stage biological contact oxidation reactor (MBCOR) in which partitioned wastewater treatment zone (WTZ) and bioaugmentation zone (BAZ) were established to enhance the removal of methyl orange (MO) and its metabolites while minimizing sludge yields. WTZ exhibited high biomass loading capacity (5.75 ± 0.31 g/g filler), achieving MO removal rate ranging from 68 % to 86 % under different aeration condition within 8 h in which the most dominant genus Chlorobium played an important role. In the BAZ, Pseudoxanthomonas was the dominant genus while carbon starvation stimulated the enrichment of chemoheterotrophy and aerobic_chemoheterotrophy genes thereby enhanced the microbial utilization of cell-released substrates, MO as well as its metabolic intermediates. These results revealed the mechanism bioaugmentation on MBCOR in effectively eliminating both MO and its metabolites.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Oxirredução
/
Biodegradação Ambiental
/
Purificação da Água
/
Reatores Biológicos
/
Corantes
/
Águas Residuárias
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article