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− | <font size=1><sup>1</sup> Pretreatment settling devices are prone to plugging, which will drive maintenance costs up. | + | <font size=1><sup>1</sup> Pretreatment settling devices are prone to plugging, which will drive maintenance costs up.</font size> |
[[category:Table]] | [[category:Table]] |
Pretreatment practice summary of characteristics
Link to this table
Pretreatment practice | Mechanism of pollutant removal | Relative pollutant removal | Cost | Relative maintenance frequency | Relative maintenance effort | Relative space requirements |
---|---|---|---|---|---|---|
Pretreatment settling devices | Screening & settling | Low to Medium | Medium to High | Medium to High1 | Low to Medium to High | 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.