Phosphorus Removal Using Iron Oxide Filters and Pine Bark Bioreactors
Author Information
Author(s): Dekle Jack L., Strosnider William H. J., White Sarah A.
Primary Institution: Clemson University
Hypothesis
How does the order of treatment affect phosphorus removal efficiency in a treatment train involving iron oxide filters and denitrifying pine bark bioreactors?
Conclusion
Iron oxide filters can effectively remove phosphorus from irrigation return flow, especially when used in conjunction with constructed floating wetlands.
Supporting Evidence
- FeOx filters removed phosphorus at rates of 0.095 g P·m−3·d−1 in spring and 0.21 g P·m−3·d−1 in fall.
- P concentration was reduced from 5.08 to 3.8 mg·L−1 in spring and from 6.72 to 4.5 mg·L−1 in fall.
- FeOx filters were more effective during cooler months when plant uptake was limited.
Takeaway
This study shows that special filters made from iron can help clean water by taking out phosphorus, especially when plants are not growing.
Methodology
The study involved two experiments in spring and fall, using iron oxide filters and pine bark bioreactors to assess phosphorus removal efficiency.
Limitations
The study was limited to specific seasonal conditions and may not represent year-round performance.
Statistical Information
P-Value
p=0.005
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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