Rural Septic Tank Wastewater Treatment Based on Enhanced Microalgae Growth in a Photosynthetic Electrochemical System
Publication: Journal of Environmental Engineering
Volume 150, Issue 9
Abstract
The three-chamber septic tank has become essential in the middle rural areas of China, although its drainage serves as a potential source of groundwater contamination. A photosynthetic electrochemical system using Chlorella vulgaris was developed to treat synthetic sewage, and the impact of environmental factors on treatment performance was investigated. The results showed that the removal efficiencies of chemical oxygen demand (COD), and reached maximum value under hydraulic circulation, initial algae dosage and 4,350 Lux light intensity. When the optimal condition were applied to treat the effluent of three-chamber septic tank, the removal efficiencies of COD, , and were 61.95%, 88.32%, and 95.36%, respectively. This study provided an optional treatment technology of rural sewage, and future research should focus on the algae separation and recovery in practical applications.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This research was supported by the National natural science fund (42107427), and the Science and technology foundation of Henan Province (222102320426).
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 150 • Issue 9 • September 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Oct 4, 2023
Accepted: Mar 28, 2024
Published online: Jun 25, 2024
Published in print: Sep 1, 2024
Discussion open until: Nov 25, 2024
ASCE Technical Topics:
- Chemical processes
- Chemical treatment
- Chemistry
- Cooling (wastewater treatment)
- Electrokinetics
- Engineering fundamentals
- Environmental engineering
- Equipment and machinery
- Geography
- Geomatics
- Groundwater pollution
- Oxygen demand
- Pollution
- Rural areas
- Tanks (by type)
- Waste management
- Waste treatment
- Wastewater management
- Wastewater treatment
- Water pollution
- Water tanks
- Water treatment
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