Safe purification of rural drinking water by biological aerated filter coupled with ultrafiltration.
Biological aerated filter
Combined system
Microbial community
Rural drinking water treatment
Ultrafiltration
Journal
The Science of the total environment
ISSN: 1879-1026
Titre abrégé: Sci Total Environ
Pays: Netherlands
ID NLM: 0330500
Informations de publication
Date de publication:
10 Apr 2023
10 Apr 2023
Historique:
received:
03
11
2022
revised:
11
01
2023
accepted:
12
01
2023
pubmed:
20
1
2023
medline:
25
2
2023
entrez:
19
1
2023
Statut:
ppublish
Résumé
Water resources of many rural areas are usually lakes or reservoirs, which can be easily affected by run-off, non-point source pollution and are often of poorer quality compared with urban water sources. Drinking water supply in remote rural areas usually suffers from various challenges, such as the high cost of construction and maintenance of centralized drinking water treatment plants and pipe networks, due to the dispersed nature of villages, which are often located in varied and complex topographies. In this study, a combined process comprising biological aerated filter (BAF) combined with ultrafiltration was developed to treat polluted reservoir water. Organic matter indexes, turbidity, and chroma were used as indicators for the evaluation of the system performance. In a long-term experiment lasting 260 days, the combined process was tested under different values of critical operational parameters, including filler types and empty bed contact time (EBCT). Furthermore, the microbial communities in different BAF reactors were carefully evaluated at different times, finding that microorganisms with specific functions were enriched in the various BAF reactors. The combined process reached 85.5 % removal rate of DOC with an EBCT of 45 min and using granule active carbon (GAC) as filler. Most of the effluents of BAF reactors met the requirements for drinking water in China. The combined system showed practical potential for polluted water treatment in some rural areas.
Identifiants
pubmed: 36657675
pii: S0048-9697(23)00247-4
doi: 10.1016/j.scitotenv.2023.161632
pii:
doi:
Substances chimiques
Drinking Water
0
Charcoal
16291-96-6
Water Pollutants, Chemical
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
161632Informations de copyright
Copyright © 2023 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. The views and ideas expressed herein are solely those of the authors and do not represent the ideas of the funding agencies in any form.