Primary Water Purification

Treatment to make water suitable for production activity.

Primary waters constitute supply for the production enterprise in its processing activities and are taken from natural sources, such as underground aquifers, lakes, rivers, or in the case of proximity to the coast, directly from the sea. Additional identifiable sources are reservoirs.

In order to be used in the production process, they must be stripped of foreign substances dissolved or suspended in the fluid.

Coind Nanofiltration Main

Purification of primary water is done by chemical, physical or mechanical processes, which include separation from:

  1. Suspended solids
  2. Bacterial load
  3. Chlorides, sulfates
  4. Any metals such as iron, copper, zinc, chromium
  5. Dissolved salts, higher than expected

Plants of
Primary Water Purification

Water Softening

Adaptation of the liquid to the production line, preventing carbonates in the water from settling and reducing the passage sections.

Activated Carbon Adsorption

Removal of organic molecules by passing water or air over a bed of granular activated carbon. The operation can be manual or automated with pneumatic valves.

Water Clarification

Separation of suspended substances or colloidal systems from water flows, upstream or downstream of a production process.


Dosage of oxidants for water sterilization.

Water Decanter

Separation of coarse molecules that allow for the reduction of machinery space and exponentially increase water quality.


Removal of iron molecules present in the water stream. It is done by oxidative systems or with specific ion-exchange resins.

Demineralization to Ion Exchange Resins

Separation of dissolved salts, either for the supply water of a production process or, in the case of recirculating systems, for the recovery of water directly in production.

Water Disinfection

Reducing the bacterial load of liquid in transit. From chemical oxidant dosing to new UV/Ozone technologies.

Sea Water Desalinators

Use of reverse osmosis membranes to enable the achievement of high quality in water treatment. Possibility of potabilization of sea water or adaptation for industrial processes.

Water Filtration

Separation of materials of different sizes present in the water flow. Filters work by gravity, as in the case of channel grates or the auger filter.

Water Grating

Separation of materials of different sizes present in the water flow. Filters work by gravity, as in the case of channel grates or the auger filter.

Water Nanofiltration

Flow filtration with appropriate membranes, capable of removing nanometer-sized particles.

Industrial Reverse Osmosis

Production of demineralized water through semipermeable membranes on pressurization systems. When installed downstream of purification systems, it allows wastewater recovery, with the possibility of using the flow again in productions.

Water Potabilization

Adaptation of water flow for human purposes. From filtration combined with sodium hypochlorite to make well water free of microorganisms, to the use of ultrafiltration membranes.

Water Cooling

Temperature regulation of water flows. It is applied with heat exchangers or specific unit heaters.

Ultrafiltration Water

High-level filtration by displacement of fluid over membranes. It is used for primary water purification or to separate molecules.