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OVERVIEW
CLEAR WATER, LAYER BY LAYER
Multimedia filters use layers of anthracite, sand and gravel with different grain sizes. Coarse layers trap large particles at the top, and fine layers catch the smaller ones below, so the whole bed works and the filter runs longer between cleanings.
The filters are backwashed automatically, and are used on their own or as the first stage before carbon filters, cartridge filters and RO.
TYPICAL USES
- Pretreatment before RO
- Well and surface water treatment
- Cooling towers and swimming pools
- Irrigation water filtration
HOW IT WORKS
INSIDE A MULTIMEDIA FILTER
Water flows down through the media bed and leaves through the underdrain. When the bed is full of dirt, water is pushed back up to wash it clean, automatically.
STEP 1
Raw water
Tap, well, river or sea
STEP 1
Raw water
Water with silt and suspended solids
STEP 2
Inlet distributor
Spreads water evenly over the bed
STEP 1
Raw water
Tap, well, river or sea
STEP 3
Media layers
Anthracite, sand and gravel
STEP 1
Raw water
Tap, well, river or sea
STEP 4
Underdrain
Collects the filtered water
STEP 1
Raw water
Tap, well, river or sea
STEP 5
Filtered water
Clear, low-turbidity water
KEY FEATURES
WHY CHOOSE OUR MULTIMEDIA FILTERS
Multi-layer media
Each layer catches a different particle size.
Low running costs
No membranes or chemicals to replace.
Automatic backwash
Cleans the bed on a timer or on pressure drop.
Corrosion-resistant vessels
FRP or epoxy-coated steel for long life.
Single or multiple units
Parallel or duty/standby vessels for any flow.
Automatic control
Valves and controller handle backwash for you.
SPECIFICATIONS
TECHNICAL DATA
The full model table, with flow, vessel size and media volume for each filter, is in the datasheet.
Capacity range
1–5,000 m³/day
Vessel material
FRP or epoxy-coated carbon steel
Max working pressure
6 bar
Filter media
Anthracite, sand and gravel
Backwash
Automatic [time or pressure drop]
APPLICATIONS
WHERE MULTIMEDIA SAND FILTERS IS USED
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