Our solutions > Treatment units for careening areas

Treatment units for careening areas

Techneau has developed a fairing area treatment unit (UTC) that stops macro and micro-pollutants from boat storage areas and fairing areas. These effluents, characterised by the presence of dust and toxic pollutants from boat maintenance operations, are treated by the UTC, thus contributing to the quality of the port’s water.

Standards

In addition to the Water Law (of 3 January 1992) applicable to fairing areas, section 6 of the Environment Code and article L 216-6 apply, which states that:

‘The act of discharging, discharging or allowing to flow into surface water, groundwater or seawater within territorial waters, directly or indirectly, any substance or substances whose action or reactions produce, even temporarily, harmful effects on health or damage to flora or fauna, or significant alterations to the normal water supply or restrictions on the use of bathing areas, is punishable by two years’ imprisonment and a fine of €75,000.’
In addition, the Sea Ports Code, through articles R 322-1 and R 353-4 of Book III of the Sea Ports Code (Decree no. 93-726 of 29 March 1993), states:

‘No one may infringe the good condition of ports and harbours in terms of their depth, cleanliness and facilities’. ‘Infringements relating to non-compliance with the areas provided for the disposal of waste and refuse are punishable’.

Principle of operation

Techneau treatment units for sheathing areas consist of three successive compartments:

Grit Chamber (Macro-Debris Trap): The grit chamber is the first compartment of the decanter. Its function is to trap heavy materials and macro-debris present in the water. Heavier particles, such as sand, gravel, and debris, settle at the bottom of the grit chamber. The purified water moves to the second compartment.

Sedimentation and Suspended Solids Storage (Tubular Bundle): The second compartment is dedicated to sedimentation. Its purpose is to separate suspended solids (SS) from the water. Inside, a tubular bundle is used to prolong the water’s residence time. This promotes the sedimentation of fine particles. The suspended solids settle at the bottom of the tubular bundle. The clarified, lighter water moves to the third compartment.

Return of Treated Water: The third compartment is where the treated water is returned. Once the suspended solids have been removed, the clarified water is collected and discharged into the treatment or discharge network, adhering to environmental standard.