Clean water infiltration
By dewatering soils, rainwater returns to its natural cycle.
But when it comes into contact with surfaces, rainwater is laden with pollutants. To limit the impact of human activities on the environment, this polluted water must be treated before it reaches the subsoil and the water table.
The challenge is to clean up this water and minimize its environmental impact.
Polycyclic Aromatic Hydrocarbons (PAHs)
Where do they come from?
- They come from the incomplete combustion of organic materials, such as fuels (used oil leaks, engine exhaust fumes).
- They belong to the family of persistent organic pollutants (POPs).
Polycyclic Aromatic Hydrocarbons are harmful micropollutants
- They attach themselves to organic matter, suspended solids or river sediments.
- These organic pollutants are particularly toxic and persistent: they remain in the ecosystem.
- Their complex atomic structure makes them difficult for soil microorganisms to biodegrade.
- Noxious to the environment, they are also toxic to health: they accumulate in living tissue due to their high fat solubility (bioaccumulation).
Water pollution by PAHs
- They account for 2/3 of the micropollutants quantified in rivers (OFB, 2020).
- 6 of the 10 found in runoff are already classified as carcinogens by the WHO-CIRC.
- They are the main cause of river downgrading ( French Water Agency).
Using biomimicry to protect soil
Soil does not systematically ensure sufficient fixation and biodegradation of pollution flows
The capacity of soils to decontaminate is limited and depends on certain physico-chemical and environmental conditions (granulometry, pH, thickness, porosity, permeability, organic matter content, etc.) which vary from one geographical area to another.
Aquatextiles provide the optimum conditions for the natural, long-term treatment of diffuse hydrocarbon pollution, as well as more serious pollution caused by road accidents and illegal dumping.
Our aquatextiles are inspired by living organisms and optimize the natural phenomenon of biodegradation. That's why we call them bio-inspired solutions. This is because, once installed, the depolluting textile improves hydrocarbon fixation and, unlike soil, does so irreversibly (hydrocarbons are not released). What's more, thanks to the systematic and continuous supply of a natural active substance essential to microorganisms, aquatextile provides an optimal biotope for accelerating and amplifying biodegradation. Clean water infiltrates and protects the quality of aquifers and soil biodiversity.
Aquatextile for permeable surfaces
A technical textile designed to treat polluted stormwater
A depolluting aquatextile is a technical textile dedicated to the treatment of pollutants carried by rainwater (runoff).
InDi'Green provides natural, maintenance-free treatment of rainwater contaminated by hydrocarbons and PAHs. Thanks to its unique structure, it captures and immobilizes hydrocarbons while releasing a natural active substance that increases and improves the soil's self-purifying capacity.
A depolluting textile to complement stormwater infiltration systems
An aquatextile is a complementary solution to on-site stormwater infiltration structures, and can complement or replace an oil separator on a project. Infiltration structures allow water to infiltrate into the ground, while aquatextiles allow this water to infiltrate depolluted, thus avoiding soil and aquifer pollution.
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