- Home
- Companies
- Tecnocom Srl
- Products
- Tecnocom - Model EDI - ...
Tecnocom - Model EDI -Electrodemineralization System
The electrodemineralization (EDI – electronic demineralization, also known as CDI – continuos demineralization) is an evolution of the process of demineralization ion exchange mixed bed. EDI in the cations and anions present in the water are exchanged on a resin with ions H + and OH-, producing demineralized water, the difference with the traditional method is that the process is continuous, since the resin is regenerated for means of semipermeable membranes by imposing an electric field current.
There is therefore no longer necessary to interrupt the normal operation of the plant to carry out the chemical regeneration with hydrochloric acid and soda. The ions H + and OH-are generated on-site for dissociation of the water molecule. The water is fed in pretratatta compartments filled with resin and delimited by membranes selectively permeable to cations and anions. At the end of these compartments are positioned electrodes that allow the migration of ions through these membranes adjacent to the compartments where it’s collected a concentrated solution. This solution is removed by imposing a flow rate of movement and a purge.