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Saint-Dizier - Model UTEP LI - Settling ...

Saint-Dizier - Model UTEP LI -Settling Tank

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). Treatment by settling of runoff water from roads, motorways and open parking areas.

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Advantages

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

Size: 36 to 540 m³/h

Design

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
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

Operation

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