L a wetland is a natural water purification system consists of a gray waterproof basin filled with gravel and vegetative plant material macrophytes.
The purification is done through the combined action between the substrate gravel, plants, wastewater and microorganisms.
The system works in the absence of added energy and electromechanical parts thus making it possible to define the eco-system.
The system of constructed wetlands is accomplished through the excavation of a basin of variable size depending on the extent and type of discharge. The dock, once sealed, is filled with an inert material which will be directly selected on the different plant species planted macrophytes suitable for the purification.
wetland plants have many features that make them excellent solutions low-cost, high-purifying to:
- low and easy maintenance
- training area perennially green irrigated
- possibility to reuse the purified water 
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