m |
m |
||
Line 15: | Line 15: | ||
<td>Pretreatment settling devices</td> | <td>Pretreatment settling devices</td> | ||
<td>Screening & settling</td> | <td>Screening & settling</td> | ||
+ | <td>Medium</td> | ||
+ | <td>Medium to High</td> | ||
+ | <td>Medium<sup>1</sup></td> | ||
<td>Low to Medium</td> | <td>Low to Medium</td> | ||
− | |||
− | |||
− | |||
<td>Low to Medium</td> | <td>Low to Medium</td> | ||
</tr> | </tr> |
Pretreatment practice summary of characteristics
Link to this table
Pretreatment practice | Mechanism of pollutant removal | Relative pollutant removal | Capital cost | Relative maintenance frequency | Relative maintenance effort | Relative space requirements |
---|---|---|---|---|---|---|
Pretreatment settling devices | Screening & settling | Medium | Medium to High | Medium1 | Low to Medium | Low to Medium |
Pretreatment screens | Screening | Low | Low | High | Medium | Low |
Pretreatment vegetated filter strips | Screening & Settling | Medium | Low | Low | High | High |
1 Pretreatment settling devices are prone to plugging, which will drive maintenance costs up.