Abstract
Transport of soluble nitrogen and phosphorus to water bodies has been a concern for many years due to human health issues and is a major contributor to the formation of oxygen deficiency in aquatic ecosystems. Agricultural subsurface drainage is one pathway for transport of excess nutrients to surface water. Compared to other BMPs, denitrification beds (woodchip bioreactors) provide a practical solution with low maintenance and comparable expenses. The objective of this research is confirm justification for enhancing denitrification bed performance at cold temperatures by supplementing readily available carbon (i.e., acetate), and adding cold-adapted and metabolically-active bacteria to bioreactors. We retrofitted an existing bioreactor into eight woodchip beds, providing a unique replicated experiment that allows flow control and microbial manipulation. Water samples were collected during May and June 2016 for each woodchip bed. Nitrate load reduction ranged from 0.4% to 8.7% at inflow temperatures ranging from 7.5°C to 9.3°C. This shows that there is a need for a strategy to boost nitrate removal from drainage water at cold temperatures. Therefore, we will enhance nitrate removal by supplementing readily available carbon (i.e., acetate) and adding cold-adapted and metabolically-active bacteria to bioreactors. The applied significance of this research is that it will optimize bioreactor performance and enhance the quality of agricultural drainage water.
| Original language | English (US) |
|---|---|
| Title of host publication | 10th International Drainage Symposium 2016 |
| Publisher | American Society of Agricultural and Biological Engineers |
| Pages | 236-239 |
| Number of pages | 4 |
| ISBN (Electronic) | 9781510855250 |
| DOIs | |
| State | Published - Jan 1 2016 |
| Event | 10th International Drainage Symposium 2016 - Minneapolis, United States Duration: Sep 6 2016 → Sep 9 2016 |
Publication series
| Name | 10th International Drainage Symposium 2016 |
|---|---|
| Volume | 2016-January |
Other
| Other | 10th International Drainage Symposium 2016 |
|---|---|
| Country | United States |
| City | Minneapolis |
| Period | 9/6/16 → 9/9/16 |
Fingerprint
Keywords
- Denitrifying bioreactor
- Nitrate
- Subsurface drainage
- Tile drainage
- Woodchip bioreactor
ASJC Scopus subject areas
- Waste Management and Disposal
Cite this
Performance of denitrification beds for removing nitrate from drainage water at cold temperatures. / Ghane, Ehsan; Feyereisen, Gary W.; Rosen, Carl J.; Sadowsky, Michael J.; Christianson, Laura Elizabeth.
10th International Drainage Symposium 2016. American Society of Agricultural and Biological Engineers, 2016. p. 236-239 (10th International Drainage Symposium 2016; Vol. 2016-January).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Performance of denitrification beds for removing nitrate from drainage water at cold temperatures
AU - Ghane, Ehsan
AU - Feyereisen, Gary W.
AU - Rosen, Carl J.
AU - Sadowsky, Michael J.
AU - Christianson, Laura Elizabeth
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Transport of soluble nitrogen and phosphorus to water bodies has been a concern for many years due to human health issues and is a major contributor to the formation of oxygen deficiency in aquatic ecosystems. Agricultural subsurface drainage is one pathway for transport of excess nutrients to surface water. Compared to other BMPs, denitrification beds (woodchip bioreactors) provide a practical solution with low maintenance and comparable expenses. The objective of this research is confirm justification for enhancing denitrification bed performance at cold temperatures by supplementing readily available carbon (i.e., acetate), and adding cold-adapted and metabolically-active bacteria to bioreactors. We retrofitted an existing bioreactor into eight woodchip beds, providing a unique replicated experiment that allows flow control and microbial manipulation. Water samples were collected during May and June 2016 for each woodchip bed. Nitrate load reduction ranged from 0.4% to 8.7% at inflow temperatures ranging from 7.5°C to 9.3°C. This shows that there is a need for a strategy to boost nitrate removal from drainage water at cold temperatures. Therefore, we will enhance nitrate removal by supplementing readily available carbon (i.e., acetate) and adding cold-adapted and metabolically-active bacteria to bioreactors. The applied significance of this research is that it will optimize bioreactor performance and enhance the quality of agricultural drainage water.
AB - Transport of soluble nitrogen and phosphorus to water bodies has been a concern for many years due to human health issues and is a major contributor to the formation of oxygen deficiency in aquatic ecosystems. Agricultural subsurface drainage is one pathway for transport of excess nutrients to surface water. Compared to other BMPs, denitrification beds (woodchip bioreactors) provide a practical solution with low maintenance and comparable expenses. The objective of this research is confirm justification for enhancing denitrification bed performance at cold temperatures by supplementing readily available carbon (i.e., acetate), and adding cold-adapted and metabolically-active bacteria to bioreactors. We retrofitted an existing bioreactor into eight woodchip beds, providing a unique replicated experiment that allows flow control and microbial manipulation. Water samples were collected during May and June 2016 for each woodchip bed. Nitrate load reduction ranged from 0.4% to 8.7% at inflow temperatures ranging from 7.5°C to 9.3°C. This shows that there is a need for a strategy to boost nitrate removal from drainage water at cold temperatures. Therefore, we will enhance nitrate removal by supplementing readily available carbon (i.e., acetate) and adding cold-adapted and metabolically-active bacteria to bioreactors. The applied significance of this research is that it will optimize bioreactor performance and enhance the quality of agricultural drainage water.
KW - Denitrifying bioreactor
KW - Nitrate
KW - Subsurface drainage
KW - Tile drainage
KW - Woodchip bioreactor
UR - http://www.scopus.com/inward/record.url?scp=85045758006&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85045758006&partnerID=8YFLogxK
U2 - 10.13031/ids.20162493465
DO - 10.13031/ids.20162493465
M3 - Conference contribution
AN - SCOPUS:85045758006
T3 - 10th International Drainage Symposium 2016
SP - 236
EP - 239
BT - 10th International Drainage Symposium 2016
PB - American Society of Agricultural and Biological Engineers
ER -