Municipal Sector
Drinking water
The filtration of spring, well or river water.
Alfa Water is highly involved in this sector, especially in the filtration of spring, well or river water.
The main pollutant in these cases are the fine suspended solids(sand, slime, colloidal and algae) that emerge after a rainfall.
Basically, we use the AVC, ABV, AMA and ABF (band filter) with a filtration degree between 5 and 100 microns.
The main pollutant in these cases are the fine suspended solids(sand, slime, colloidal and algae) that emerge after a rainfall.
Basically, we use the AVC, ABV, AMA and ABF (band filter) with a filtration degree between 5 and 100 microns.
Application schemes

River water has a highly variable content of suspended solids over time.
The proposed solution provides for pre-filtration with the use of an ABV filter for the treatment of large solids (200÷100µm).
For the treatment of lower particle size solids and colloidal ones, the flocculant and polyelectrolyte dosing with static mixer is foreseen, followed by an AVC filter at 50÷25µm.
Final filtration is carried out using the band filter (ABF) at 10µm.
The proposed solution provides for pre-filtration with the use of an ABV filter for the treatment of large solids (200÷100µm).
For the treatment of lower particle size solids and colloidal ones, the flocculant and polyelectrolyte dosing with static mixer is foreseen, followed by an AVC filter at 50÷25µm.
Final filtration is carried out using the band filter (ABF) at 10µm.
River water has a highly variable content of suspended solids over time.
The proposed solution provides for pre-filtration with the use of an ABV filter for the treatment of large solids (200÷100µm).
For the treatment of lower particle size solids and colloidal ones, the flocculant and polyelectrolyte dosing with static mixer is foreseen, followed by an AVC filter at 50÷25µm.
Final filtration is carried out using the band filter (ABF) at 10µm.
The proposed solution provides for pre-filtration with the use of an ABV filter for the treatment of large solids (200÷100µm).
For the treatment of lower particle size solids and colloidal ones, the flocculant and polyelectrolyte dosing with static mixer is foreseen, followed by an AVC filter at 50÷25µm.
Final filtration is carried out using the band filter (ABF) at 10µm.

River water has a highly variable content of suspended solids over time.
The proposed solution provides for pre-filtration with the use of an ABV filter for the treatment of large solids (200÷100µm).
For the treatment of lower particle size solids and colloidal ones, the in-line dosing of flocculant and polyelectrolyte with a static mixer followed by a battery of sand filters with variable filter media particle size is envisaged.
The final stage consists of an AVC filter with a filtration degree of 10÷5µm.
The proposed solution provides for pre-filtration with the use of an ABV filter for the treatment of large solids (200÷100µm).
For the treatment of lower particle size solids and colloidal ones, the in-line dosing of flocculant and polyelectrolyte with a static mixer followed by a battery of sand filters with variable filter media particle size is envisaged.
The final stage consists of an AVC filter with a filtration degree of 10÷5µm.

The band filter (ABF) can be used as a polishing unit after sand filtration.
In these cases the filter can ensure filtration up to 15µm.
In these cases the filter can ensure filtration up to 15µm.