Effects of two fillers and process conditions on the water treatment efficiency of a continuous packed bed biofilm reactor.
Lett Appl Microbiol
; 77(7)2024 Jul 01.
Article
de En
| MEDLINE
| ID: mdl-38955379
ABSTRACT
This study evaluated the treatment efficiency of two selected fillers and their combination for improving the water quality of aquaculture wastewater using a packed bed biofilm reactor (PBBR) under various process conditions. The fillers used were nanosheet (NS), activated carbon (AC), and a combination of both. The results indicated that the use of combined fillers and the hydraulic retention time (HRT) of 4 h significantly enhanced water quality in the PBBR. The removal rates of chemical oxygen demand, NO2-âN, total suspended solidsï¼TSSï¼, and chlorophyll a were 63.55%, 74.25%, 62.75%, and 92.85%, respectively. The microbiota analysis revealed that the presence of NS increased the abundance of microbial phyla associated with nitrogen removal, such as Nitrospirae and Proteobacteria. The difference between the M1 and M2 communities was minimal. Additionally, the microbiota in different PBBR samples displayed similar preferences for carbon sources, and carbohydrates and amino acids were the most commonly utilized carbon sources by microbiota. These results indicated that the combination of NS and AC fillers in a PBBR effectively enhanced the treatment efficiency of aquaculture wastewater when operated at an HRT of 4 h. The findings provide valuable insights into optimizing the design of aquaculture wastewater treatment systems.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Aquaculture
/
Purification de l'eau
/
Biofilms
/
Bioréacteurs
/
Eaux usées
Langue:
En
Journal:
Lett Appl Microbiol
Sujet du journal:
MICROBIOLOGIA
Année:
2024
Type de document:
Article
Pays d'affiliation:
Chine