Recommendations
Parshall flume selection (Life Saneamento)Filters: washing flowFilters: washing volumeWashing water collector gutterFilters: areas for floodgates and adjacent valvesHead loss in the filter bed during washing

Filters: filtration rate

Input data

Flow

Superficial area

Number of filters

Output data

Filtration rate

Description

Given the flow to be filtered, the superficial area of each filter, and the number of filters, the average filtration rate is calculated.

Formula

86400⋅Qn⋅A\frac{86400 \cdot Q}{n \cdot A}

Where:

  • Q/AQ/A = filtration rate (m³/m².d)\text{(m³/m².d)}
  • QQ = flow (m³/s)\text{(m³/s)}
  • AA = superficial area of each filter (m²)\text{(m²)}
  • nn = number of filters

FilterFilter

Inputs

Parameter
Standard units
Description
Flow (QQ)
L/s
Flow to be filtered
Superficial area (AA)
m²
Superficial area of each filter
Number of filters (nn)
-
Total number of filters

Outputs

Parameter
Standard units
Description
Filtration rate (Q/AQ/A)
m³/m².d
Average filtration rate

References

  • AZEVEDO NETTO, J. M. DE. Manual de hidráulica. 9. Ed. São Paulo, Blucher, 2015.