Areas of work:
- Design and development of natural depuration systems in artificial wetlands
Wastewater treatment techniques in artificial wetlands are secondary and tertiary treatment systems for black or residual waters, combined with a primary system (coarse material separator, grease separator) which can be a very suitable alternative to conventional systems.
Their functioning is based on the wastewater passing through a porous material used as filter bed, and a plant cover of macrophytes which, through the oxygen incorporated in their roots, helps to purify water which has previously undergone physical, chemical and biological processes. Inside the biological filter, bacteria are responsible for the degradation of organic matter, and use the surface of the filter bed for the formation of a bacterial film, producing a stable population which will not be dragged away from the artificial wetland. In this manner, the idea is to recreate a natural environment, wetlands, in a controlled way. As it is an ecosystem, it is more resilient (with a capacity for self-healing), which improves efficiency and reduces maintenance. The water emerging from the process can be thrown into the river or reused as greywater for irrigation or cleaning.
Wastewater treatment with artificial wetlands is an efficient, proven alternative with low maintenance costs, which does not need to be managed by specialists as opposed to traditional systems. It is especially recommended for single-family houses, summer camp houses, farmhouses and rural tourism houses, which have difficult access to the sanitation network. It is also recommended for service areas, offices, public buildings, small urban centres and/or municipalities. In addition, from an environmental and landscape point of view, they provide added value, promoting integration into the environment and the naturalisation of spaces.
There are different types of artificial wetlands for water purification, which can be grouped according to the type of macrophytes used, or according to the water flow direction. At Naturalea, we draft the project (including the validation and justification of the proposal) and develop it. Our main task is to define which of these systems or combination thereof is most suitable in each case, always including primary treatments, which are often key to the success of systems.