Sand Filtration

Sand filtration is a frequently used very robust method to remove suspended solids from water.

The filtration medium consists of a multiple layer of sand with a variety in size and specific gravity.

Applications for sand filtration:

Preperation of cooling water
Treatment of waste water
Production of drinking water
Filtration in swimming pools
Pre filtration for membrane systems
Filtration of grey or surface water
Removal of iron

A sand filter has a dirt holding capacity of 3 to 6 kg TSS / m2 of sand surface.

When the filters are loaded with particles, the flow direction is reversed and the flow is increased to clean the filter again. This step is called a backwash.

The time for the cleaning is determined by one of the following criteria:

Queda de pressão ao longo do filtro
Tempo de operação

Sand filters product sheet

Multimedia filters