Differences in greenhouse gas emissions and microbial communities between underground and conventionally constructed wastewater treatment plants.
Bioresour Technol
; 396: 130421, 2024 Mar.
Article
in En
| MEDLINE
| ID: mdl-38320713
ABSTRACT
Large quantities of greenhouse gases (GHGs) are emitted into the atmosphere during wastewater treatment. In this study, GHG and microbial samples were collected from four wastewater treatment plants (WWTPs), and their differences and relationships were assessed. The study showed that, compared with conventionally constructed WWTPs, well-established gas collection systems in underground WWTPs facilitate comprehensive collection and accurate accounting of GHGs. In aboveground WWTPs, capped anoxic ponds promote methane production releasing it at 2-8 times the rate of uncapped emissions, in contrast to nitrous oxide emissions. Moreover, a stable subsurface environment allows for smaller fluctuations in daily GHG emissions and higher microbial diversity and abundance. This study highlights differences in GHG emission fluxes and microbial communities in differently constructed WWTPs, which are useful for control and accurate accounting of GHG emissions.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Water Purification
/
Greenhouse Gases
/
Microbiota
Language:
En
Journal:
Bioresour Technol
Journal subject:
ENGENHARIA BIOMEDICA
Year:
2024
Type:
Article