Abstract
As global populations grow, demand for generation of affordable and efficient electricity will likely increase, requiring tradeoffs between power generation and ecosystems sustainability, including water quality and species habitat. Once-through thermoelectric power plants, representing 30% of the electricity generation in the United States, withdraw and discharge large quantities of water for cooling purposes. This process can cause thermal pollution in waterways, adversely affecting aquatic communities. Incorporating biology into the energy-water nexus can aid decision-makers in identifying tradeoffs and more effectively assessing and managing aquatic ecosystems. To quantify thermal pollution and the risk posed to aquatic species, we created an adaptable, novel methodology that utilizes plume mixing and probability distribution analyses on temperature and flow data for both a power plant's discharge and the adjoining river. To assess risk, we developed a probability risk space that quantifies the probability of exceeding a given temperature. The Shawnee Fossil Plant on the Ohio River was selected to demonstrate the methodology, and three fish species with associated upper thermal avoidance limits were selected for comparison. Our results highlight that both the lateral and longitudinal location from the point of effluent mixing within the river affects the probability of thermal risk to aquatic species. A high degree of risk within a plume can reduce to a smaller total risk within the context of a large river cross-section. Our results emphasize the need for individualized risk assessment for Clean Water Act §316(a) requirements for power plant effluent temperature limits and National Pollutant Discharge Elimination System permits. These findings are applicable in policy-making, environmental mitigation, and power plant operations management.
| Language | English (US) |
|---|---|
| Pages | 434-450 |
| Number of pages | 17 |
| Journal | Applied Energy |
| Volume | 210 |
| DOIs | |
| State | Published - Jan 15 2018 |
Fingerprint
Keywords
- Aquatic ecology
- Energy-water nexus
- Policy
- Thermal pollution
- Thermoelectric power
ASJC Scopus subject areas
- Building and Construction
- Energy(all)
- Mechanical Engineering
- Management, Monitoring, Policy and Law
Cite this
Probabilistic assessment of aquatic species risk from thermoelectric power plant effluent : Incorporating biology into the energy-water nexus. / Logan, Lauren H.; Stillwell, Ashlynn S.
In: Applied Energy, Vol. 210, 15.01.2018, p. 434-450.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Probabilistic assessment of aquatic species risk from thermoelectric power plant effluent
T2 - Applied Energy
AU - Logan,Lauren H.
AU - Stillwell,Ashlynn S.
PY - 2018/1/15
Y1 - 2018/1/15
N2 - As global populations grow, demand for generation of affordable and efficient electricity will likely increase, requiring tradeoffs between power generation and ecosystems sustainability, including water quality and species habitat. Once-through thermoelectric power plants, representing 30% of the electricity generation in the United States, withdraw and discharge large quantities of water for cooling purposes. This process can cause thermal pollution in waterways, adversely affecting aquatic communities. Incorporating biology into the energy-water nexus can aid decision-makers in identifying tradeoffs and more effectively assessing and managing aquatic ecosystems. To quantify thermal pollution and the risk posed to aquatic species, we created an adaptable, novel methodology that utilizes plume mixing and probability distribution analyses on temperature and flow data for both a power plant's discharge and the adjoining river. To assess risk, we developed a probability risk space that quantifies the probability of exceeding a given temperature. The Shawnee Fossil Plant on the Ohio River was selected to demonstrate the methodology, and three fish species with associated upper thermal avoidance limits were selected for comparison. Our results highlight that both the lateral and longitudinal location from the point of effluent mixing within the river affects the probability of thermal risk to aquatic species. A high degree of risk within a plume can reduce to a smaller total risk within the context of a large river cross-section. Our results emphasize the need for individualized risk assessment for Clean Water Act §316(a) requirements for power plant effluent temperature limits and National Pollutant Discharge Elimination System permits. These findings are applicable in policy-making, environmental mitigation, and power plant operations management.
AB - As global populations grow, demand for generation of affordable and efficient electricity will likely increase, requiring tradeoffs between power generation and ecosystems sustainability, including water quality and species habitat. Once-through thermoelectric power plants, representing 30% of the electricity generation in the United States, withdraw and discharge large quantities of water for cooling purposes. This process can cause thermal pollution in waterways, adversely affecting aquatic communities. Incorporating biology into the energy-water nexus can aid decision-makers in identifying tradeoffs and more effectively assessing and managing aquatic ecosystems. To quantify thermal pollution and the risk posed to aquatic species, we created an adaptable, novel methodology that utilizes plume mixing and probability distribution analyses on temperature and flow data for both a power plant's discharge and the adjoining river. To assess risk, we developed a probability risk space that quantifies the probability of exceeding a given temperature. The Shawnee Fossil Plant on the Ohio River was selected to demonstrate the methodology, and three fish species with associated upper thermal avoidance limits were selected for comparison. Our results highlight that both the lateral and longitudinal location from the point of effluent mixing within the river affects the probability of thermal risk to aquatic species. A high degree of risk within a plume can reduce to a smaller total risk within the context of a large river cross-section. Our results emphasize the need for individualized risk assessment for Clean Water Act §316(a) requirements for power plant effluent temperature limits and National Pollutant Discharge Elimination System permits. These findings are applicable in policy-making, environmental mitigation, and power plant operations management.
KW - Aquatic ecology
KW - Energy-water nexus
KW - Policy
KW - Thermal pollution
KW - Thermoelectric power
UR - http://www.scopus.com/inward/record.url?scp=85029569318&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85029569318&partnerID=8YFLogxK
U2 - 10.1016/j.apenergy.2017.09.027
DO - 10.1016/j.apenergy.2017.09.027
M3 - Article
VL - 210
SP - 434
EP - 450
JO - Applied Energy
JF - Applied Energy
SN - 0306-2619
ER -