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.
Underwater intake towers. Beach wells. Coastal or port platforms. Brackish water wells.
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.
Made of plastic materials suitable for seawater. Manual or automatic cleaning, even assisted by air.
Vertical and horizontal. FGRP or carbon steel with internal ebonite coating. Filled with silex, anthracite, garnet, or special media like zeolites or glass.
Vessels made of PVC, Polyamide, FGRP, stainless steel… Cartridges from 10″ to 70″. Melt blown or spiral wounded types.
Dissolved air flotation systems for complex waters with episodes of algal blooms, etc.
Reduction of SDI15 to minimum values using ultrafiltration membranes as reverse osmosis pretreatment.
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…
Made of PVC, PE, GRP or even stainless steel. Internal elements to favor high turbulence and mixing. Own manufacture with 3D printing.
High pressure 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.
High pressure centrifugal pumps
Super Duplex made turbines.
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.
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…
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.
Sodium hypochlorite or chlorine gas to provide residual disinfection
Calcite filters, NaOH dosing…
Lime milk contactors, CO2 injection… Calcite-dolomite filters… Dosing of MgCl2 and NaHCO3
FLUSHING & CIP
Centrifugal pumps, customized tanks, plunger pipes, electrical heaters, agitators, recirculations, cartridge filters…
We supply chemical products specially formulated to perform acid and basic cleaning of reverse osmosis systems.
Contact us so we can advise you on the right treatment for your desalination needs.
Leachate treatment plant by Reverse Osmosis
A Coruña, Spain
Drinking water treatment plant by Reverse Osmosis
FIGURES AND DATA
Hydraulic works executed
Big size pipes
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