From water-makers to industrial sized Seawater Purification, we offer a full range of systems. Our units are manufactured to eliminate a large amount of salts and other minerals from seawater using RO. Our equipment does the filtration by employing a high-pressure pump to salty water forcing it through semi-porous membranes denying salts and other organics from flowing through.

The membranes are only tasked to remove dissolved solids while dividing the feed water into purified water and rejected concentrated salts. The salts and other organics are thrown into the brine stream then flushed into a drain. At the end we have purified water that has 99% less dissolved salts. These sea water RO systems have the power to purify extremely high TDS water.

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Seawater RO systems are usable anywhere from yachts to municipalities. It’s important to choose the correct materials of construction to handle seawater (which is highly corrosive). Pure Aqua, Inc. uses materials such as Duplex SS 2205, SS 2207 or Monel, and SS 904 to guarantee a longer operating life and less maintenance.

Seawater Reverse Osmosis (SWRO) is a reverse osmosis desalination membrane process that has been commercially used since the early 1970s. The typical single pass SWRO system consists of the following components:

  • Intake: well or open water
  • Pre-treatment: Filtration and chemical dosing
  • High-pressure pump: to achieve the needed pressure
  • Membrane assembly: to perform the desalination process
  • pH adjustment: to adjust the alkalinity or acid level
  • Disinfection: to prevent any bacterial or organic growth
STANDARD FEATURES
  • Stainless steel frame
  • Heavy duty 5 micron cartridge prefilter
  • Sea water resistant SS pump
  • Microprocessor/PLC based control panel & VFD
  • Glycerin-filled 316 SS pressure gauges
  • Product & reject flow meters
  • TFC spiral wound membranes
  • FRP membrane housings
  • 460V/3ph/60Hz power requirement
  • Low & high pressure switches
  • Permeate TDS monitor
  • Stainless steel high pressure piping
  • Stainless steel throttling valve for reject stream
  • Automatic feed shut off valve
  • Energy recovery on 64K GPD and larger
OPERATION SPECIFICATIONS
  • Max. feed water temperature: 42°C
  • Feed water pressure: 40 to 80 psi
  • Operating pressure: 700 to 1,000 psi
  • H2 S, turbidity and organics must be removed
  • Max. iron content: 0.05 ppm
  • Feed water TDS: 10,000-42,000 ppm
  • Equipment upgrade for TDS up to 50,000 ppm
  • Antiscalant dosing is required pH tolerance range: 3-11
  • Biological or organic content must be removed