WATER

What is phytodepuration?
Types of systems
Our offer
Costs

What is phytodepuration?

Ambiente Italia Progetti realizes turnkey phytodepuration systems, following the projects since the initial design until the planning, the construction, the testing and the management.

Phytodepuration, or constructed wetland, is a natural treatment technique for wastewater that reproduces natural purification processes using complex biochemical, physical and physiological processes.

Types of systems

Free water surface (FWS) systems consist in basins or channels where the water surface is exposed to the atmosphere and the soil, constantly submerged, constitutes the support for the roots of the emerged plants. These systems in fact replicate natural wetlands, where shallow water depth is directly in contact with the atmosphere. Different aquatic plants can be used, plantation of both emerging and floating macrophyte.

Horizontal subsurface flow constructed wetland (HF or SFS-h) is composed of one or more beds, filled with proper inert material, and with a subsurface horizontal flow below the surface. HF maintains continuous saturated conditions and is planted with emergent aquatic macrophytes.

Vertical subsurface flow constructed wetlands (VF) is composed by one or more parallel beds filled with gravel and sand of different sizes. Wastewater is distributed on the top of a VF (with pump or syphons) and vertically percolates through the bed, finding aerobic conditions. The feeding is in batch and the bed are planted with macrophytes.

Constructed wetland 2.0 are innovative solutions and design techniques aimed to improve removal efficiencies, to decrease land occupancy, and to optimize operational and maintenance costs, transforming activated sludge in an excellent organic fertilizer.

Sludge drying reed beds (SDRBs) or Sludge Treatment Reed Beds (STRBs) is a constructed wetland solution used for the management of sludge coming from big activated sludge treatment plants. SDRBs are able to fully substitute conventional sludge lines, leading to economic advantages in terms of sludge treatment and allowing a safe reuse in agriculture of dried sludge. SDRBs can also be used for in-situ treatment of sludge coming from septic and Imhoff tanks.

What we offer

Costs

The initial investments costs of a constructed wetland system are usually the same of those for a traditional plant, however the managing costs are vastly lower, thanks to the zero – or reduced – electric energy used.

Furthermore, constructed wetlands systems do not require a daily maintenance, nor the usage of skilled labor for their management, which impacts even further on the final costs.