Monasand® Sand filter
Monasand® Sand filter - Continuous sand filter
Raw influent flows into the MONASAND® filter through the inlet pipe at the top and travels down to the radial water distributor where it will be spread uniformly at the base of the sand bed.
Here, the water travels from bottom to top through the filter bed where solids are trapped, and filtered water passes over the overflow wire and is led away through the filtrate outlet pipe. The contaminated sand moves down in the filter towards the bottom of the cone to be sucked into the external air-lift.
The air-lift pump moves the sand to the top into the sand washer. There, it is cleaned in a countercurrent flow by an upwards movement of the wash water which acts as an impurities separator. Clean sand falls back to the isolation box to serve later as a filter medium again.
This specially designed sand isolator prevents any contact between filtrate and sand. The dirty washing water is discharged through a designated adjustable outlet pipe, which can be regulated manually but remains always below the filtrate outlet level.
- Operation and continuous washing
- Excellent filtration efficiency
- Easy maintenance
- Adjustable washing flow
- Very low energy consumption
- Easy installation
- Industrial water recycling
- Phosphorous removal
- Biofiltration
- Chemical processing
- Paper industry
- Drinking water production
- Process water production
- Tertiary treatment
| Model | Filtration area (m2) | Diameter (m) | Nominal Flow (m3/h) | Air Consumption (Nm3/h 4 à 5 bar) | Wash water flow |
|---|---|---|---|---|---|
| MDS 07 | 0.70 | 0.95 | 5 to 10 | 1.5 | 3 to 12 % |
| MDS 15 | 1.60 | 1.45 | 10 to 20 | 2 | |
| MDS 30 | 2.90 | 1.95 | 15 to 40 | 4 to 5.5 | |
| MDS 40 | 3.90 | 2.25 | 30 to 50 | 6 to 8 | |
| MDS 50 | 5.10 | 2.55 | 40 to 75 | 8 to 12 | |
| MDS 30 GC/cell | 2.90 - 4.25 | - | 30 to 40 | 4 to 7 | |
| MDS 40 GC/cell | 4.25 - 5.75 | - | 40 to 65 | 6 to 10 | |
| MDS 50 GC/cell | 5.25 - 6.75 | - | 50 to 85 | 8 to 12 |
