Desalination

We manufacture brackish water and seawater desalination systems, based on reverse osmosis.

Espina manufactures all kinds of desalination plants using reverse osmosis technology, both for brackish water and seawater, or even for leachate treatment.

We carry out all phases of the project, from basic and detailed design, to manufacturing, installation and commissioning.

We supply complete systems tailored to the needs of each project.

Components: Our systems can include all the stages of the process such as intake pumping, pretreatment, reverse osmosis system, post-treatment, tanks, etc.

Intake

Intake systems

Underwater intake towers. Beach wells. Coastal or port platforms. Brackish water wells.

Submarine collectors

Intake collectors or submarine brine emissaries, made in HDPE, ballasted.

Intake pumping systems

Intake pumps with automatic priming systems (ejectors, vacuum pumps…). Submersible pumps for wells or platforms. Vertical pumps for wells.

Pretreatment

Disk filters

Made of plastic materials suitable for seawater. Manual or automatic cleaning, even assisted by air.

Media filters

Vertical and horizontal. FGRP or carbon steel with internal ebonite coating. Filled with silex, anthracite, garnet, or special media like zeolites or glass.

Cartridge filters

Vessels made of PVC, Polyamide, FGRP, stainless steel… Cartridges from 10″ to 70″. Melt blown or spiral wounded types.

DAF

Dissolved air flotation systems for complex waters with episodes of algal blooms, etc.

Ultrafiltration

Reduction of SDI15 to minimum values using ultrafiltration membranes as reverse osmosis pretreatment.

Chemical conditioning

Dosing systems

Tanks made of HDPE, PP, FGRP… Simple or double wall. Retention buckets. Electromagnetic or electromechanical dosing pumps… Multi-function valves, back pressure valves. Foot valves. injection valves. Suction lances. Level switches, flow detectors…

Static mixers

Made of PVC, PE, GRP or even stainless steel. Internal elements to favor high turbulence and mixing. Own manufacture with 3D printing.

Intakes, media filters, dosing systems:

Centrifugal pumps

Vertical or horizontal multistage pumps. Made of AISI 304, AISI 316L, AISI 904L, Duplex or Super Duplex stainless steel, depending on the salinity of the water to be treated.

Positive displacement pumps

Triple piston or axial pistons. Made of AISI 316L, Duplex or Super Duplex stainless steel, including ceramic pistons, depending on the salinity of the water to be treated.

Energy recovery systems (Seawater)

Isobaric pressure exchangers

Type ERI® or i-Save® with built-in booster pump. Ceramic pistons.

Booster pumps

High pressure centrifugal pumps

Turbochargers

Super Duplex made turbines.

Reverse Osmosis

Pressure Vessels

Made of FGRP or stainless steel. From 300 to 1800 psi. Ports in AISI 316L, Duplex or Super Duplex, depending on the needs of the project.

Membranes

Brackish water or seawater membranes. 400-440 ft2. Wide range of rejection grades according to the needs of each project. Brands such as Hydranautics, Toray, LG Chem, Dow, Dupont, Vontron…

Manifolds

Low pressure manifolds and valves in PVC, HDPE, GRP… High pressure manifolds in stainless steel AISI 304, 316L, 904L, Duplex or Super Duplex, depending on the salinity of the water to be treated.