Chapter
Apr 26, 2012
Treatment Performance of Wastewater Lagoons in South Yungas Province of Bolivia
Authors: Helen E. Muga [email protected], James R. Mihelcic [email protected], Nathan W. Reents [email protected], Santiago Morales, Gabriela Gemio [email protected], Meredith Ballard [email protected], Valerie J. Fuchs [email protected], Cara M. Hanson [email protected], Esther M. Johnson [email protected], and Alison M. Hoyt [email protected]Author Affiliations
Publication: World Environmental and Water Resources Congress 2009: Great Rivers
Abstract
The operation of wastewater lagoons systems located in the South Yungas Province of Bolivia has been analyzed over a 2-year period. Facultative and maturation lagoons were evaluated for their performance in removing total suspended solids (TSS), biochemical oxygen demand (BOD), chemical oxygen demand (COD), nitrogen, phosphorus, and coliforms. Facultative lagoons operating in San Antonio were found to remove approximately 74% total suspended solids, 70–89% BOD, 62–85% COD, 53% nitrogen, 52% phosphorus and 97.8–99.9% coliforms. Maturation ponds were found to remove 74–93% total suspended solids, 22–62% BOD, 10–95% COD, 3% nitrogen, 20–95% phosphorus and 77.4–99.96% coliforms. Results from the 2-year study indicate that these wastewater treatment systems are currently performing as expected; however regular maintenance, specifically removing algae every (2 weeks) is required. The removal percentages of the treatment systems (comparing influent to effluent) ranged from 74–97% TSS, 78–98% BOD, 70–99.7% COD, 58–77% nitrogen, 62–99.9% phosphorus, and 99.99% coliforms.
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© 2009 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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ASCE Technical Topics:
- Bacteria
- Bodies of water (by type)
- Business management
- Chemical compounds
- Chemical elements
- Chemical processes
- Chemicals
- Chemistry
- Developing countries
- Environmental engineering
- Lagoons
- Nitrogen
- Nutrient pollution
- Oxygen demand
- Phosphorus
- Pollutants
- Pollution
- Practice and Profession
- Wastewater management
- Wastewater treatment
- Water and water resources
- Water management
- Water pollution
- Water treatment
Authors
Affiliations
Department of Civil and Environmental Engineering, University of South Florida, 4202 East Fowler Avenue, ENG 303, Tampa, Florida, 33620.E-mail: [email protected]
Department of Civil and Environmental Engineering, University of South Florida, 4202 East Fowler Avenue, ENB 118, Tampa, Florida, 33620.E-mail: [email protected]
ACDI/VOCA, Oficiana: Caranavi, Calle Calama #15, Complejo Hotelero Landivar, Casilla 574, Bolivia.E-mail: [email protected]
Santiago Morales
Universidad Technologica de Bolivia, Calle Colombia 154, Casilla 5819, La Paz, Bolivia.
Universidad Technologica de Bolivia, Calle Colombia 154, Casilla 5819, La Paz, Bolivia.E-mail: [email protected]
Michigan Technological University, 1400 Townsend Drive, Houghton, Michigan 49931.E-mail: [email protected]
Michigan Technological University, 1400 Townsend Drive, Houghton, Michigan 49931.E-mail: [email protected]
Michigan Technological University, 1400 Townsend Drive, Houghton, Michigan 49931.E-mail: [email protected]
Michigan Technological University, 1400 Townsend Drive, Houghton, Michigan 49931.E-mail: [email protected]
Yale University, New Haven, Connecticut, Ohio.E-mail: [email protected]
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