Demineralization

I’mWATER designs, manufactures, and commissions industrial demineralization systems.

Based on reverse osmosis, ion exchange, and electrodeionization technologies to reduce the dissolved salts content in water.

Certain contaminants, such as heavy metals or dissolved salts, cannot be removed from water using other conventional processes, and it is necessary to use demineralization technologies such as reverse osmosis, ion exchange, electrodeionization, mixed beds, etc.

I’mWATER designs custom systems based on specific incoming water quality and the desired treated water quality to be achieved.

The most common applications for these types of industrial water demineralization systems are:

  • Demineralization of boiler feedwater, which requires very low conductivity and metal presence. Known as DEMI water.ç
  • Water treatment for the cleaning of industrial parts or components that require water free of any type of residue.
  • Water treatment for laboratories or the production of chemicals or pharmaceuticals requiring water of the highest purity.

The industrial demineralization systems supplied by I’mWATER are designed to be compact, mounted on frames or containers, and with dimensions suitable for easy transport and installation.

Osmosis, electrodeionization, ion exchange, and mixed bed systems can be designed with capacities ranging from 1 m3/h to 100 m3/h or more, depending on the customer’s needs.

Demineralization for boiler feedwater

Industries with steam boilers, combined cycles, etc., require a feedwater of very high quality, free from dissolved salts, which can damage the equipment over time. To prevent this, systems must be installed to produce water with very low conductivity, which are based on combinations of reverse osmosis with multiple stages, electrodeionization, or mixed bed ion exchange.

Special cation exchange resins for hardness removal (calcium and magnesium). Regenerated with salt (NaCl).

It is a polishing process for the final permeate of reverse osmosis. Using ion exchange resins, both anionic and cationic, different ions still present in the permeate water are removed, resulting in demineralized water. Ion exchange requires periodic regeneration of the resins and uses a large amount of chemicals. The equipment itself is similar to bed filters.

In a multi-stage reverse osmosis configuration, the permeate from the first stage is fed back into another set of membranes to further reduce its conductivity.

Among other applications, it is a polishing process for the final permeate of reverse osmosis, in which ultrapure water is obtained. It is based on the removal of ions through electrical interactions that attract them to their corresponding poles, removing them from the water stream. The great advantage is that it operates without the use of chemicals. The equipment itself is similar to reverse osmosis membranes, elongated cylindrical vessels.