Ultra Dewatering Bags provide an effective way to collect harmful sediments from dirty water pumped out of excavation works that would otherwise pollute the surrounding environment.
Ultra Dewatering Bag
Pumped Sediment Control
Ultra Dewatering Bags provide an effective way to collect harmful sediments from dirty water pumped out of excavation works that would otherwise pollute the surrounding environment.
Pumped Sediment Control
Hy-Tex Ultra Dewatering Bags provide an effective way to collect harmful sediments from dirty water pumped out of excavation works (such as foundations, pipe line construction, water, sewer and utility trenches, waterways and lakes) that would otherwise pollute the surrounding environment.
It is a legal requirement to prevent silty water from leaving site untreated, and a finable offence if you do not take appropriate pollution control measures. The Environment Agency Pollution Prevention Guidelines PPG6, in summary, require that the majority of suspended solids (gravel, sand, and silt) must be removed from site water before it is discharged into a drain, sewer or watercourse.
The standard 1.80 x 1.80m Ultra Dewatering bags has the capacity to trap near 1 tonne of silt and cope with flow rates up to 2,730 l/min, while the larger 3.05 x 4.55m bags can trap over 4 tonnes of silt and cope with flow rates up to 6,818 l/min.
| Size | Code | Surface Area | Max Flow Rate | Max Pump Size | Sediment Capacity | Oil Capacity |
|---|---|---|---|---|---|---|
| 0.91 x 1.22 m (3 x 4 ft) |
9729 | 2.23 m² (24 ft²) |
1,890 l/min (500 gal/min) |
10 cm (4 inch) |
0.17 m³ / 327 kg (6 ft³ / 720 lbs) |
4.5 l (1.2 gal) |
| 1.80 x 1.80 m (6 x 6 ft) |
9724 | 6.68 m² (72 ft²) |
1,890 l/min (500 gal/min) |
10 cm (4 inch) |
0.51 m³ / 980 kg (18 ft³ / 2,160 lbs) |
14 l (3.7 gal) |
| 3.05 x 4.55 m (10 x 15 ft) |
9725 | 27.87 m² (300 ft²) |
5,670 l/min (1,500 gal/min) |
15 cm (6 inch) |
4.20 m³ / 8,165 kg (150 ft³ / 18,000 lbs) |
57 l (15.1 gal) |
| Feature | ASTM Test | Value |
|---|---|---|
| Material: | Non-woven polypropylene geotextile | |
| Grab Tensile Strength: | D 4632 | 912 N (205 lb) |
| Elongation: | D 4632 | 50% |
| Trapezoid Tear: | D 4533 | 356 N (80 lb) |
| Puncture Resistance: | D 4833 | 2,335N (525 lbs) |
| Mullen Burst: | D 3786 | 2,896 kpa (420 psi) |
| Permittivity: | D 4491 | 1.5 sec-¹ |
| Pore Size: | 180 micron | |
| UV Stability: | D 4355 | 70% strength retained after 500hr |
| Weight: | D 5261 | 272 g/m² (8 oz/yd²) |
| Flow Rate: | D 4491 | 3,660 l/min/m² (90 gal/min/ft²) |
Ultra Dewatering Bags
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