Recommendations

Backwash head loss in Pluvitec Master pipes Lamellar settling tank: settled water collection Filters: washing volume Washing water collector gutter Filters: filtration rate Decanter inlet channels

Filtros: vazão de lavagem

Default

Input data

Washing velocity

Superficial area

Output data

Washing flow

Description

Given the superficial area of the filter and the desired ascending velocity, the filter washing flow is calculated.

Formula

V_l = A \cdot U_a

Where:

$V_l$ = washing flow $\text{(m³/s)}$
$A$ = superficial area of the filter $\text{(m²)}$
$U_a$ = washing velocity $\text{(m/min)}$

Filters

Inputs

Parameter	Standard units	Description
Washing velocity ( $U_a$ )	m/min	Desired ascending velocity for filter washing
Superficial area ( $A$ )	m²	Superficial area of the filter

Outputs

Parameter	Standard units	Description
Washing flow ( $V_l$ )	L/s	Required flow rate for filter washing

References

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