Difference between revisions of "Relative pollutant reduction for sand filters"
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<td>Organics</td> | <td>Organics</td> | ||
<td></td> | <td></td> | ||
| − | <td>High</td> | + | <td>Medium/High<sup>4</sup></td> |
</tr> | </tr> | ||
</table> | </table> | ||
<font size=1><sup>1</sup> Low: < 30%; Medium: 30 to 65%; High: >65%<br> | <font size=1><sup>1</sup> Low: < 30%; Medium: 30 to 65%; High: >65%<br> | ||
<sup>2</sup> Results are for total metals only<br> | <sup>2</sup> Results are for total metals only<br> | ||
| − | <sup>3</sup> Treatment capabilities for Cd and Cr are based on results of a single study by Kurz, 1998. This study shows low (9.3%) removal rates for Cr. | + | <sup>3</sup> Treatment capabilities for Cd and Cr are based on results of a single study by Kurz, 1998. This study shows low (9.3%) removal rates for Cr.<br> |
| + | <sup>4</sup> High if amended with clay or organic matter | ||
</font size> | </font size> | ||
Revision as of 13:20, 20 July 2015
Relative pollutant reduction from sand filter systems for metals, nitrogen, bacteria, and organics.
Link to this table
| Pollutant | Constituent | Treatment capabilities1 |
|---|---|---|
| Metals2 | Cadmium, Chromium, Copper, Zinc, Iron, Nickel, Lead | Medium/High3 |
| Nitrogen | Total nitrogen | Low/medium |
| Total Kjeldahl nitrogen | Medium | |
| Bacteria | Fecal coliform, e. coli | Medium |
| Organics | Medium/High4 |
1 Low: < 30%; Medium: 30 to 65%; High: >65%
2 Results are for total metals only
3 Treatment capabilities for Cd and Cr are based on results of a single study by Kurz, 1998. This study shows low (9.3%) removal rates for Cr.
4 High if amended with clay or organic matter