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Sub Title: 200,000 to 900,000 GPD Brackish Water RO

Reverse osmosis systems are used to reject bacteria, sugars, proteins, particles, dyes, and other constituents that have a molecular weight of greater than 150-250 daltons from tap and brackish water. It is also capable of purifying water and remove salts and other impurities. Our largest tap and brackish water units, the RO-500 series, comes standard with media pre-filters, chemical dosing, and antiscalant. These systems can be customized to fit individual customer and water application needs. The RO-500 series has a capacity of 200,000 to 900,000 GPD.

SKU: RO-500 Category: Membrane and Reverse Osmosis Systems > Brackish Water Reverse Osmosis Brand: Pure Aqua Other Names: Brackish Well Water Purifier, BW Reverse Osmosis Machine, Brackish Water RO Purification System, Industrial BWRO Treatment Plant
4.5 Stars 4.67 stars - based on 1 Reviews.


Our largest tap and brackish water units, the RO-500 series, can come standard with media pre-filters, chemical dosing, and antiscalant. These systems are usually customized to fit individual customer and water application needs.

The RO-500 Series is considered to be one of the most compact industrial reverse osmosis systems in the market, it also features state of the art energy saving membranes.

When we design the RO-500 series industrial reverse osmosis plants, we consider robust construction, user-friendly design, environmentally conservative operations, and long term reliability.

Economical and efficient, RO-500 industrial reverse osmosis equipment incorporate the latest in RO technology to remove dissolved minerals, particles, organics, solids and other contaminants from water. Reverse Osmosis uses RO membranes as its core separation technology to reject these contaminants. Pure Aqua use the most reputable membranes manufacturers such as Dow Filmtec and Hydranautics (USA made)



Operation Specifications:
  • Max. feed water temperature: 42°C
  • Equipment upgrade for TDS over 5,000 ppm
  • Hydrogen Sulfide must be removed
  • Turbidity should be removed
  • Feed water TDS: 0-1,000 ppm
  • Hardness over 1 GPG requires antiscalant dosing
  • Max. Silica Tolerance: 60 ppm @ 60% recovery
  • Max. Iron content: 0.05 ppm
  • Feed water pressure: 20 to 80 psi
  • Operating pressure: 150 to 250 psi
  • pH tolerance range: 3-11
  • Operate at higher TDS by lowering recovery

Industrial Brackish Water Reverse Osmosis Systems RO-500
Model Number Permeate Flow Rate Quantity of 8" Membranes Motor Rating at 1,000 ppm
GPD M3/D 60Hz (hp) 50Hz (kw)
TW-200K-4780 200,000 758 28 30 22
TW-225K-5680 225,000 852 30 30 22
TW-270K-6680 270,000 1,023 36 40 30
TW-320K-7680 320,000 1,212 42 40 30
TW-360K-8680 360,000 1,364 48 50 37
TW-410K-9680 410,000 1,553 54 60 37
TW-450K-10680 450,000 1,705 60 60 45
TW-500K-11680 500,000 1,894 66 60 45
TW-550K-11780 550,000 2,083 77 75 45
TW-600K-13780 600,000 2,273 91 75 55
TW-700K-14780 700,000 2,652 98 100 75
TW-800K-16780 800,000 3,030 112 2X60 2x37
TW-900K-18780 900,000 3,409 126 2X60 2x37
For more information, please see our PDF in the "Download" tab

Note: If the feed water TDS exceeds 1,000 ppm, the system model number changes to BW-XXXK-XXXX, and a suffix is added to the end of the model number: “-3” is added if the TDS is 3,000 ppm or less, and “-5” is added if the TDS is 5,000 ppm or less. Example: Required system to produce 320,000 GPD with a feed water TDS of 5,000 ppm, the corresponding model number is: “BW-320K-7680-5”.



Standard Features: Available Options:
  • Status indicators
  • Motor starter
  • NEMA 12 enclosure
  • Low pressure switch
  • High pressure switch
  • Liquid filled pressure gauges
  • Permeate conductivity monitor
  • Permeate & concentrate flow meters
  • Powder coated carbon steel frame
  • 8” TFC spiral wound membranes
  • Stainless steel multi-stage pump with TEFC motor
  • FRP membrane housing
  • 5 micron cartridge prefilter
  • 460V/3Ph/60Hz power supply
  • PLC based control panel
  • Programmable time delay and set points
  • Export crating
  • Feed / Permeate blending
  • Automatic hourly flush
  • Membrane cleaning skid
  • Feed water conductivity monitor
  • Remote monitor / control option
  • Post deionization polishers
  • Water softeners
  • Ozonation and UV sterilization systems
  • Media and Iron prefiltration systems
  • Chemical dosing systems
  • Water and hour meters
  • Feed ORP controller with sensor
  • Feed pH controller with sensor
  • Product tank level controller switch
  • 220V/3Ph/60Hz power supply
  • 380-415V/3Ph/50Hz power supply


The ideal applications for industrial RO water filtration plant include:
  • Electronics
  • Power Plants
  • Boiler Feed Water
  • Pharmaceutical
  • Mining Industry
  • Chemical Blending
  • Ice Manufacturing
  • Plating Operations
  • Cooling Towers
  • Laboratory
  • Ion Exchange Pre-treatment
  • Metal Finishing
  • EDI Pre-treatment
  • Food and Beverage
  • Beverage Production and Bottled Water
  • Safe Drinking Water
  • Rinse Water
  • Spot Free Product Rinse

Works good

Services: 5 Stars 5 Stars
Quality: 5 Stars 5 Stars
Delivery: 4 Stars 4 Stars

I have the system for about 3 months, and it is working perfect. Our quality of life increased million times thanks to this filter. I should mention that first I was worried because I received a damaged unit, but after explaining the problems to the sales representative they sent the right part for the unit. The second unit worked perfect without any problem up to now. Great.


by: Cesar from






Industrial Brackish Water Reverse Osmosis Machines Dubai

Pure Aqua, Inc. designs and manufactures water treatment systems such as the three Industrial Brackish Water Reverse Osmosis (BWRO) Units for reclaimed water, Dubai, UAE. Brackish Water Reverse Osmosis Units are designed to produce 3 x 2000 m3/day. The complete BWRO Units were supplied with pre and post treatment using advanced PLC control.   ..more->