Marsh-pond-marsh constructed wetland design analysis for swine lagoon wastewater treatment
| Autor: | G. B. Reddy, Patrick G. Hunt, M. E. Poach, Kenneth C. Stone |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
geography
Environmental Engineering Marsh geography.geographical_feature_category Design analysis Phosphorus Environmental engineering chemistry.chemical_element Wetland Management Monitoring Policy and Law chemistry Wastewater Constructed wetland Environmental science Sewage treatment Effluent Nature and Landscape Conservation |
| Zdroj: | Ecological Engineering. 23:127-133 |
| ISSN: | 0925-8574 |
| Popis: | Constructed wetlands have been identified as a potentially important component of animal wastewater treatment systems. Continuous marsh constructed wetlands have been shown to be effective in treating swine lagoon effluent and reducing the land needed for terminal application. Constructed wetlands have also been used widely in polishing wastewater from municipal systems. Constructed wetland design for animal wastewater treatment has largely been based on that of municipal systems. The objective of this research was to determine if a marsh-pond-marsh wetland system could be described using existing design approaches used for constructed wetland design. The marsh-pond-marsh wetlands investigated in this study were constructed in 1995 at the North Carolina AT however, they were not as effective in the treatment of phosphorus (8%). Outflow concentrations were reasonably correlated (r 2 ≥ 0.86 and r 2 ≥ 0.83, respectively) to inflow concentrations and hydraulic loading rates for both total N and ammonia-N. The calculated first-order plug-flow kinetics model rate constants ( K20) for total N and ammoniaN (3.7–4.5 m/day and 4.2–4.5 m/day, respectively) were considerably lower than those reported in the limited literature and currently recommended for use in constructed wetland design for animal wastewater treatment. Published by Elsevier B.V. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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