advantages of chalcedonite filter beds
Advantages of chalcedonite filter beds
SkySil beds are highly efficient filter materials. For this reason, they have a wide range of applications. They perform excellently in filtration systems:
- Domestic installations
- Water supply stations
- Process water treatment for industrial purposes
The unique physical and chemical properties of SkySil bed are the source of its numerous advantages over quartz sand. Thanks to the developed pore system, each grain is characterised by lightness and strength, which extends the life of the bed and reduces the costs associated with its operation.
One of the key aspects in water treatment is the length of time it takes for a filter bed to remove manganese or ammonium ion from water. Traditional beds commonly used in water technology take up to several months to reach a contaminant concentration level acceptable for drinking water.
When using the SkySil bed, this period is much shorter. Favourable results are obtained as early as halfway through the working time, and what is more, they are visibly lower.
The use of SkySil bed makes it possible to optimise costs in many cases; its unique properties, compared to other filter materials, excel in water treatment technologies and bring considerable savings in the construction/modernisation and operation of water treatment plants.
| CHARACTERISTIC | SkySil | QUARTZ SAND | VALUE | |
|---|---|---|---|---|
| SkySil Fe Ammonio | SkySil Fe | |||
| Granulation | 0,8 – 2,0 |
0,6 – 1,2 1,1 – 2,0 |
0,5-1,4 | mm |
| Bulk density | 0,85 – 0,95 | 0,9 – 1,1 | 1,6 | kg/dm3 |
| Specific density | 2,62 – 2,65 | 2,62 – 2,65 | 2,65 | kg/dm3 |
| Grains' porosity | ≤ 30 | ≤ 20 | 0 | % |
| Specific surface area | 5,0 – 6,0 | 4,5 – 5,0 | 0,2 – 0,4 | m2/g |
| Homogeneity coefficient | ≤ 1,5 | ≤ 1,5 | ≤ 1,6 | - |
The use of the SkySil high-efficiency filter bed, with a purchase cost of PLN 6840 higher, will enable a reduction in the number of filters and bring savings of up to PLN 160 000 for the new water treatment plant project with a capacity of 100 m3/h and an iron level of 2.5 mg/l.
Saving on washings in water treatment systems
SkySil’s chalcedonite filter bed have almost twice the mass capacity of the commonly used quartz sand.
CHALCEDONITE SkySil Fe
Mass capacity: 3500 - 4200g/m2
QUARTZ SAND
Mass capacity: 2000 - 2500g/m2
CHALCEDONITE SkySil Ammonio
Mass capacity: 3500 - 4500g/m2
| 30 dAYS | A YEAR | |
|---|---|---|
| Saving on rinse water | 777,6 m3 | 9331,2 m3 |
| Average cost of 1m3 of water incuding wastewater | 12,00 PLN | 12,00 PLN |
| 9 331,20 PLN | 111 974,40 PLN |
Increasing the capacity of the water treatment plant
SkySil’s chalcedonite filter beds allow much higher filtration. For traditional filter beds such as quartz sand, the limit is 10 m/h. Tests conducted on chalcedonite grit confirm that achieving 15 m/h preserves the parameters of pure water, and in special cases the speed can even reach 20 m/h.
By replacing the quartz sand with the highly efficient SkySil filter bed, it is possible to increase the capacity of the SUW by 40 per cent without having to increase other investments.
| PARAMETER | SkySil | QUARTZ SAND | VALUE | ||
|---|---|---|---|---|---|
| Fe Ammonio 0,8-2,0 | Fe 0,6-1,2 | Fe 1,1-2,0 | |||
| Filtration rate | ≤ 15 | <10 | m/h | ||
| Space above the bed | 40 | 40 | % | ||
| Air rinse speed | 13 – 17 | 8,5 – 13 | 11 – 17 | 15 - 20 | L/s·m2 |
| Water rinse speed | 12 – 15 | 7,5 – 12 | 10 – 15 | 13 – 18 | L/s·m2 |
| Expansion of the filter bed | 25 | 25 | % | ||
Reduction of filtration area
The use of high-efficiency SkySil filter beds enables a significant reduction in capital expenditure at the Water Treatment Plant.
An example is the design of a 100 m3/h water treatment plant with an iron level of 2.5 mg/L.
| COST OF FILTRATION BED | |||
|---|---|---|---|
| ELEMENT | UNIT | QUARTZ SAND'S FILTERS | CHALCEDONITE FILTERS |
| VALUE | |||
| Number of filters | szt. | 4 | 3 |
| Filter bed's volume | m3 | 18,0 | 13,5 |
| Filter bed's weight | kg/m3 | 1600 | 1000 |
| Amount of filter bed | Mg | 28,8 | 13,5 |
| Price | PLN/Mg | 700 | 2000 |
| Total cost | PLN | 20 160 | 27 000 |
| COST OF INSTALATION OF A SINGLE FILTER | |||
|---|---|---|---|
| ELEMENT | QUANTITY | PLASTIC PIPING | ACID-RESISTANT PIPING |
| COST | |||
| Shut-off damper DN250 | 1 | 4 900 PLN | 4 900 PLN |
| Shut-off damper DN200 | 5 | 21 000 PLN | 21 000 PLN |
| Impulse flow meter | 1 | 6 500 PLN | 6 500 PLN |
| Pressure plate filter DN2400 | 1 | 58 000 PLN | 58 000 PLN |
| Piping | 1 | 20 000 PLN | 45 000 PLN |
| Building | 10 m2 | 25 000 PLN | |
| Total cost | 135 400 PLN | 160 400 PLN | |