Difference between revisions of "BMP pollutant removal for phosphorus"
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<th>BMP group</th> | <th>BMP group</th> | ||
<th>BMP design variation</th> | <th>BMP design variation</th> | ||
| − | <th>Average TP removal rate<sup>b</sup></th> | + | <th>Average TP removal rate (%)<sup>b</sup></th> |
| − | <th>Maximum TP removal rate<sup>c</sup></th> | + | <th>Maximum TP removal rate (%)<sup>c</sup></th> |
| − | <th>Average soluble P removal rate<sup>d,g</sup></th> | + | <th>Average soluble P removal rate (%)<sup>d,f,g</sup></th> |
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td rowspan="2">Bioretention</td> | + | <td rowspan="2">Bioretention<sup>f</sup></td> |
<td>Underdrain</td> | <td>Underdrain</td> | ||
| − | <td> | + | <td>see [[Phosphorus credits for bioretention systems with an underdrain]] |
| − | <td> | + | </td> |
| − | <td> | + | <td>see [[Phosphorus credits for bioretention systems with an underdrain]]</td> |
| + | <td>see [[Phosphorus credits for bioretention systems with an underdrain]]</td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td>Infiltration</td> | + | <td>Infiltration<sup>h</sup></td> |
| − | <td>100</td> | + | <td> |
| − | <td>100</td> | + | *100 for infiltrated portion |
| − | <td>100</td> | + | *0 for non-infiltrated portion</td> |
| + | <td> | ||
| + | *100 for infiltrated portion | ||
| + | *0 for non-infiltrated portion</td> | ||
| + | <td> | ||
| + | *100 for infiltrated portion | ||
| + | *0 for non-infiltrated portion</td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| Line 32: | Line 39: | ||
<tr> | <tr> | ||
<td>Dry swale</td> | <td>Dry swale</td> | ||
| − | <td> | + | <td>see [[Phosphorus credits for bioretention systems with an underdrain]]</td> |
| − | <td> | + | <td>see [[Phosphorus credits for bioretention systems with an underdrain]]</td> |
| − | <td> | + | <td>see [[Phosphorus credits for bioretention systems with an underdrain]]</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
<td>Wet swale</td> | <td>Wet swale</td> | ||
| − | <td> | + | <td>0</td> |
| − | <td> | + | <td>35</td> |
| − | <td> | + | <td>0</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
<td rowspan="2">Infiltration<sup>f</sup></td> | <td rowspan="2">Infiltration<sup>f</sup></td> | ||
| − | <td>Infiltration trench</td> | + | <td>Infiltration trench<sup>h</sup></td> |
| − | <td>100</td> | + | <td> |
| − | <td>100</td> | + | *100 for infiltrated portion |
| − | <td>100</td> | + | *0 for non-infiltrated portion</td> |
| + | <td> | ||
| + | *100 for infiltrated portion | ||
| + | *0 for non-infiltrated portion</td> | ||
| + | <td> | ||
| + | *100 for infiltrated portion | ||
| + | *0 for non-infiltrated portion</td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td>Infiltration basin</td> | + | <td>Infiltration basin<sup>h</sup></td> |
| − | <td>100</td> | + | <td> |
| − | <td>100</td> | + | *100 for infiltrated portion |
| − | <td>100</td> | + | *0 for non-infiltrated portion</td> |
| + | <td> | ||
| + | *100 for infiltrated portion | ||
| + | *0 for non-infiltrated portion</td> | ||
| + | <td> | ||
| + | *100 for infiltrated portion | ||
| + | *0 for non-infiltrated portion</td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
<td rowspan="2">Stormwater ponds</td> | <td rowspan="2">Stormwater ponds</td> | ||
<td>Wet pond</td> | <td>Wet pond</td> | ||
| − | <td> | + | <td>46</td> |
| − | <td> | + | <td>75</td> |
| − | <td> | + | <td>0</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
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<td>60</td> | <td>60</td> | ||
<td>75</td> | <td>75</td> | ||
| − | <td> | + | <td>0</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
<td rowspan="2">Stormwater wetlands</td> | <td rowspan="2">Stormwater wetlands</td> | ||
<td>Shallow wetland</td> | <td>Shallow wetland</td> | ||
| − | <td> | + | <td>38</td> |
<td>55</td> | <td>55</td> | ||
| − | <td> | + | <td>0</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
<td>Pond/wetland</td> | <td>Pond/wetland</td> | ||
| − | <td> | + | <td></td> |
| − | <td> | + | <td></td> |
| − | <td> | + | <td>0</td> |
</tr> | </tr> | ||
</table> | </table> | ||
| − | <font size= | + | <font size=1><sup>a</sup>Removal rates show in table are a composite of five sources: |
*Caraco (Center for Watershed protection, 2001) | *Caraco (Center for Watershed protection, 2001) | ||
*Maryland Department of the Environment](2000) | *Maryland Department of the Environment](2000) | ||
*Winer (Center for Watershed Protection, 2000) | *Winer (Center for Watershed Protection, 2000) | ||
*P8 modeling (William Walker) | *P8 modeling (William Walker) | ||
| − | |||
| − | |||
<sup>b</sup> Average removal efficiency expected under MPCA Sizing Rules 1 and 3<br> | <sup>b</sup> Average removal efficiency expected under MPCA Sizing Rules 1 and 3<br> | ||
<sup>c</sup> Upper limit on phosphorus removal with increased sizing and design features, based on national review<br> | <sup>c</sup> Upper limit on phosphorus removal with increased sizing and design features, based on national review<br> | ||
| Line 96: | Line 113: | ||
<sup>f</sup> Note that the performance numbers apply only to that portion of total flow actually being treated; it does not include any runoff that bypasses the BMP<br> | <sup>f</sup> Note that the performance numbers apply only to that portion of total flow actually being treated; it does not include any runoff that bypasses the BMP<br> | ||
<sup>g</sup>Note that soluble P can transfer from surface water to groundwater, but this column refers only to surface water<br> | <sup>g</sup>Note that soluble P can transfer from surface water to groundwater, but this column refers only to surface water<br> | ||
| − | <sup>h</sup | + | <sup>h</sup>Note that 100% is assumed for all infiltration, but only for that portion of the flow fully treated in the infiltration facility; by-passed runoff or runoff diverted via underdrain does not receive this level of treatment.</font size> |
| − | [[ | + | <noinclude> |
| + | [[Category:Level 2 - Pollutants/Pollutant removal]] | ||
| + | [[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Pollutant removal]] | ||
| + | </noinclude> | ||
Latest revision as of 19:48, 1 August 2022
This table shows comparison of phosphorus removal for different BMPs.a,e,f Values represent the percent of incoming pollutant that is removed. Source: MPCA Minnesota Stormwater Manual.
Link to this table
Information: Removal rates shown here are composite averages intended solely for use in comparing performance between BMP designs and for use in calculating load reduction in site-based TP models. They have been adapted, rounded and slightly discounted from statistical values published in BMP performance databases.
| BMP group | BMP design variation | Average TP removal rate (%)b | Maximum TP removal rate (%)c | Average soluble P removal rate (%)d,f,g |
|---|---|---|---|---|
| Bioretentionf | Underdrain | see Phosphorus credits for bioretention systems with an underdrain | see Phosphorus credits for bioretention systems with an underdrain | see Phosphorus credits for bioretention systems with an underdrain |
| Infiltrationh |
|
|
|
|
| Filtration | Sand filter | 50 | 55 | 0 |
| Dry swale | see Phosphorus credits for bioretention systems with an underdrain | see Phosphorus credits for bioretention systems with an underdrain | see Phosphorus credits for bioretention systems with an underdrain | |
| Wet swale | 0 | 35 | 0 | |
| Infiltrationf | Infiltration trenchh |
|
|
|
| Infiltration basinh |
|
|
|
|
| Stormwater ponds | Wet pond | 46 | 75 | 0 |
| Multiple pond | 60 | 75 | 0 | |
| Stormwater wetlands | Shallow wetland | 38 | 55 | 0 |
| Pond/wetland | 0 |
aRemoval rates show in table are a composite of five sources:
- Caraco (Center for Watershed protection, 2001)
- Maryland Department of the Environment](2000)
- Winer (Center for Watershed Protection, 2000)
- P8 modeling (William Walker)
b Average removal efficiency expected under MPCA Sizing Rules 1 and 3
c Upper limit on phosphorus removal with increased sizing and design features, based on national review
d Average rate of soluble phosphorus removal in the literature
e See section on calculating credits for each BMP in this Manual.
f Note that the performance numbers apply only to that portion of total flow actually being treated; it does not include any runoff that bypasses the BMP
gNote that soluble P can transfer from surface water to groundwater, but this column refers only to surface water
hNote that 100% is assumed for all infiltration, but only for that portion of the flow fully treated in the infiltration facility; by-passed runoff or runoff diverted via underdrain does not receive this level of treatment.
This page was last edited on 1 August 2022, at 19:48.