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UTEP®LI

FRANCE
Settling tank
with honeycomb structure
Treatment by settling of runoff water from roads, motorways and open parking areas

Avantages

  • Conformity : compliance in full with the charter defined by the ISGH trade union

  • Performance : throughput > 75% over the annual mass of TTS

  • Reliability : high-section honeycombs (minimum 39 mm) reducing the risks of clogging and equi-distribution of the flow over the entire lamellar zone with the pressurising of the recovery channels for the settled water.

  • Durability : mechanical resistance and chemical inertia of the honeycombs made of polypropylene, quality of the coating

  • Easy to operate and maintain : high degree of accessibility, resistance to washing of the honeycombs

  • Decennial warranty via insurance supplemented by an Epers

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Taille : 36 to 540 m³/h

Application

The décanteur dépollueur® UTEP®LI makes it possible through settling to intercept suspended matter (TTS) and the associated pollutants (heavy metals, COD, oils and PAHs).

Conception

  • Made from S235 steel assembled on flat bottoms, protected after SA 2.5 sanding according to ISO 8501-1 with a hot polymerised polyurethane coating 600 µm thick

  • Lamellar settling on honeycombs with a minimum hydraulic height diameter of 39 mm, tilted 60°, with channels for recovering the settled water and a high storage capacity for sludge

  • Surface hydraulic load <= 2 m/h

  • Compliance with hydraulic criteria : laminar flow (low number of Reynolds < 800) and height under cells defined in order to prevent the sludge from going back into suspension

  • Screening with 40 mm airgap made of stainless steel

  • Accessibility to the sludge chamber on the upstream and downstream sides

  • Installation class 1d according to NFP16-451-1/CN

  • Connection via lip seals up to DN 400

  • 2 to 4 access wells according to the size of the structure

Fonctionnement

  • The UTEP-LI settling tank is dimensioned to treat rain events with a ratio of 40 l/s per hectare rendered impermeable. It will as such be installed downstream of a storm water overflow or a storm water basin and with a controlled flow.

  • Screening at input, combined with a flow distributor and a macro-waste storage chamber

  • Grit removal chamber with a storage capacity of 2 m³/ha imp. intended to trap heavy materials (gravel, sand...) and waste

  • Lamellar settling on honeycombs with high projected area, associated with channels for recovering settled water dewatered in the absence of hydraulic circulation

  • High-capacity sludge silo (3 m³/ha imp.) under the honeycombs

  • Trap at the output of the structure, intended to trap light liquids

Options

  • Standardised ladder - ECH

  • Sludge withdrawal column - COL

  • Cathodic protection - ANODEINT and ANODEEXT

  • Automatic closing-off device - OBT

  • Anchoring frame - CHASPE

  • Sludge and oil alarm - KAH05 & SEP0203

  • Risers - REH and buffers - COU

Reference Surface treated (m²) Flow rate (m³/h) Ø D (mm) L (mm) DN (mm) V. usable (L) V. sand (L) V. sludge (L) FEE (mm) 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
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