UTEP®LI
Settling tank
Treatment by settling of runoff water from roads, motorways and open parking areas
Avantages :
- Performance: efficiency > 75% on annual suspended solids (SS) mass
- Reliability: large cross-section honeycombs reduce the risk of clogging, and flow is evenly distributed throughout the lamellar zone by pressurising the decanted water return channels
- Durability: mechanical resistance and chemical inertness of polypropylene honeycombs, coating quality
- Easy to operate and maintain: easy access, resistant to honeycomb washing
- Ten-year guarantee by insurance supplemented by an Epers
Taille :
36 to 540 m³/h
Application :
The 'décanteur dépollueur' UTEP®LI intercepts suspended solids (SS) and associated pollutants (heavy metals, COD, hydrocarbons and PAHs)
Conception :
- Made of S235 steel assembled on flat bottoms, protected by a 500 μm thick COFRAC-certified epoxy coating after sandblasting to SA 2.5 in accordance with ISO 8501-1
- Lamellar decantation on honeycombs with a minimum hydraulic diameter of 35 mm, tilted at 60°, with clarified water collection channels and a large sludge storage capacity
- Surface hydraulic head
- Compliance with hydraulic criteria: laminar flow (low Reynolds number < 800) and defined height under cells to prevent resuspension of sludge
- Screening with 35 mm air gap in stainless steel
- Access to the sludge chamber upstream and downstream
- Installation class 1d according to NFP16-451-1/CN
- Lip seal connections up to ND 400
- 2 to 4 access shafts depending on the size of the structure
Fonctionnement :
- The UTEP-LI settling tank is dimensioned to treat rainfall events with a ratio of 40 l/s per hectare of waterproofing. It will therefore be installed downstream of a storm overflow weir or storm basin with a regulated flow
- Screening at input, combined with a flow distributor and a macro-waste storage chamber
- Grit chamber with a storage capacity of 2 m³/ha imp. designed to trap heavy matter (gravel, sand, etc.) and waste
- Lamellar decantation on honeycombs with a large projected surface area, combined with channels for collecting settled water which is dewatered in the absence of hydraulic circulation
- Large capacity sludge silo (3 m³/ha imp.) under the honeycombs
- Trap at the output of the structure, intended to catch light liquids
Options :
- Standardised ladder - ECH
- Sludge withdrawal column - COL
- Cathodic protection - ANODEINT and ANODEEXT
- Automatic shut-off device - OBT
- Anchoring frame - CHASPE
- Sludge and oil alarm - KAH05 & SEP0203
- Extensions - REH and buffers A15 to D400 - COU
| Reference | Surface treated (m²) | Flow rate (m³/h) | Ø D (mm) | L (mm) | ND (mm) | V. usable (L) | V. sand (L) | V. sludge (L) | Inlet water (FEE)(mm) | Outlet water (FES)(mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| UTEP03602LI | 2500 | 36 | 1600 | 3000 | 160 | 5500 | 500 | 1000 | 410 | 430 | 800 |
| UTEP05402LI | 3750 | 54 | 1600 | 4000 | 200 | 7000 | 800 | 1200 | 450 | 470 | 1000 |
| UTEP07202LI | 5000 | 72 | 1600 | 5000 | 200 | 8700 | 1000 | 1600 | 450 | 470 | 1150 |
| UTEP09003LI | 6250 | 90 | 2200 | 4000 | 300 | 13 300 | 1300 | 2500 | 565 | 585 | 1575 |
| UTEP10803LI | 7500 | 108 | 2200 | 4500 | 300 | 15 000 | 1500 | 2800 | 565 | 585 | 1700 |
| UTEP14403LI | 10 000 | 144 | 2200 | 5000 | 300 | 16 600 | 2000 | 3500 | 565 | 585 | 1875 |
| UTEP18003LI | 12 500 | 180 | 2380 | 5500 | 300 | 21 800 | 2500 | 4500 | 565 | 585 | 2350 |
| UTEP21603LI | 15 000 | 216 | 2380 | 6500 | 300 | 25 700 | 3000 | 5000 | 565 | 585 | 2700 |
| UTEP25203LI | 17 500 | 252 | 2380 | 7500 | 300 | 29 700 | 3500 | 5700 | 565 | 585 | 3025 |
| UTEP30604LI | 21 250 | 306 | 2980 | 7000 | 400 | 43 400 | 4300 | 6600 | 660 | 680 | 5000 |
| UTEP36004LI | 25 000 | 360 | 2980 | 7500 | 400 | 46 500 | 5000 | 9100 | 660 | 680 | 5350 |
| UTEP45004LI | 31 250 | 450 | 2980 | 9500 | 400 | 58 900 | 6300 | 10 300 | 660 | 680 | 6450 |
| UTEP54004LI | 37 500 | 540 | 2980 | 11 000 | 400 | 68 200 | 7500 | 11 900 | 660 | 680 | 7300 |
