Abstract
The effect of hydraulic loading rate (HLR; 5 to 20 cm day-1) and carbon addition (1-6 g dried plant material per week) was determined at two temperatures (28°C and 35°C) in 18 flow-through sediment-water wetland microcosms that were fed nitrate-contaminated water (30 mg N L-1). Nitrate removal efficiencies varied from 8% to > 95%, decreasing with increasing HLRs and increasing with increasing carbon addition rates. The effect of HLR and carbon addition rate were integrated into the C:N ratio, which alone was highly predictive of nitrate removal efficiency. As nitrate removal efficiencies increased, dissolved organic carbon in the effluent also increased, as did chloroform formation potential. Nitrate-treatment wetlands may be a feasible method of remediating nitrate-contaminated groundwater.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 677-684 |
| Number of pages | 8 |
| Journal | Water Research |
| Volume | 32 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 1 1998 |
Bibliographical note
Copyright:Copyright 2020 Elsevier B.V., All rights reserved.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 6 Clean Water and Sanitation
Keywords
- Constructed wetlands
- Denitrification
- Groundwater remediation
- Nitrate
- Trihalomethanes
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