Alkern and Tencate launch a solution for drainage roads with stormwater treatment

Recurrent flooding and urban heat islands

Let us remember that while in rural areas 50% of rainwater infiltrates the subsoil to supply groundwater, only 15% does so in urban areas. Likewise, if 40% of them evaporate in natural areas (against 30% in cities), only 10% remain on the surface, against 55% in cities, which de facto leads to the saturation of drainage networks ( sewers, collectors, storm weirs) and increased temperatures in cities, due to urban heat islands.

To face it, ALKERN has developed, for several years, a panel of 100% natural and 100% recyclable solutions as so many relevant, immediate and sustainable answers for the infiltration of runoff and the fight against urban heat islands. . Claiming permeability coefficients validated in laboratories, these ALKERN draining solutions thus make it possible to infiltrate, at least, twice the precipitation of a rain qualified as intense (i.e. 2 l / s / ha).

Clean 4 O ': the solution for infiltrating and decontaminating rainwater

As a logical extension of this offer, ALKERN announces a partnership with TENCATE AQUAVIA, a company specializing in stormwater decontamination. This partnership leads to the creation of a complete solution (infiltration and depollution): the Clean 4 O 'range in which the expertise of the two companies is associated: the solution, designed and produced in France, TenCate GeoClean® Azure, which can be combined to the various references of the O 'Alkern range, the leading manufacturer of precast concrete products in France.

It provides a new response to the market ensuring both the permeability of road coverings and the depollution of rainwater hydrocarbons. It should be noted that TenCate GeoClean® Azure naturally eliminates the hydrocarbons present in runoff that infiltrate the soil and helps reduce the diffuse pollution they carry.

A solution that is simple to implement, autonomous and sustainable

A combination of products that are easy to use (3 x 70 m or 6 x 70 m rolls), durable, autonomous and maintenance-free.

Beyond the environmental benefit, the TenCate GeoClean® Azure aquatextile instantly infiltrates water over its entire surface, thus promoting infiltration at the source and direct rainwater in order to avoid saturation of the water network. sanitation.

Its high permeability (> 10-2 m / s) thus makes it possible to absorb large volumes of water even in the event of extreme rains (65 mm / h) while fixing in the process, more than 99% of the hydrocarbons dissolved on the irreversibly oleophilic filaments.

Aquatextile activates and then systematically and durably stimulates their natural biodegradation by soil microorganisms with a very high yield. The treated water has a low residual hydrocarbon content (<2 mg / l), avoiding chronic soil pollution.

Finally, in the event of massive accidental pollution (eg collision between two vehicles), aquatextile also plays the role of buffer storage and slows down the infiltration of hydrocarbons.

Local authorities, shopping centers and individuals can now benefit from all the performance of this offer intended for light and heavy vehicles for roads, parking areas, car parks and logistics platforms.