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Sub Title: 28,000 to 173,000 GPD Brackish Water RO

Reverse osmosis devices are tasked with purifying water and eliminating salts and other contaminates from tap, brackish, and sea water. They have the power of blocking bacteria, particles, sugars, proteins, dyes, and other impurities that encompass a molecular weight of more than 150-250 dalton.

Our largest tap and brackish water equipment, the RO-400 series, may come standard with media pre-filters, chemical dosing, and antiscalant. This equipment is primarily customized to suit individual customer and water application needs.

SKU: RO-400 Category: Membrane & Reverse Osmosis Systems > Industrial & Commercial Reverse Osmosis Systems Brand: Pure Aqua Other Names: Industrial BWRO Treatment Plant, Brackish Well Water Purifier, BW Reverse Osmosis Machine, Brackish Water RO Purification System
4.5 Stars 4.83 stars - based on 2 Reviews.

Uses of RO-400 Series Systems

The RO-400 Series is recognized as one of the most compact industrial reverse osmosis systems in the market, as well as only using the best of state-of-the-art energy-saving membranes.

When we design our RO-400 series industrial reverse osmosis equipment, we take into consideration certain matters such as robust construction, user abd environmentally friendly design, and long-term reliability.

Industrial reverse osmosis machines include multimedia prefilters, a water softener, the reverse-osmosis unit with semi-permeable membranes, and a UV sterilizer post treatment. These machines apply the technology of reverse osmosis by transporting feed water through multimedia prefilters to take out huge particles. Then the water is transported into a water softener to remove hardness that may cause damage to the membranes within the machine. These pretreatments have the capability of removing hardness, chlorine, odors, color, iron, and sulfur. The water then continues into the reverse osmosis machine where a high pressure pump applies extreme pressure to the highly concentrated solution, separating the remaining salts, minerals, and impurities that the pre filters couldn’t catch. Fresh, potable water comes out from the low pressure end of the membrane while salts, minerals, and other impurities are discharged into a drain on the other end. Lastly, the water is passed through a UV sterilizer to kill any bacteria and microbes that still exist in the water.

Economical and efficient, RO-400 industrial reverse osmosis machines acquire the latest in RO technology to remove dissolved salts, particles, organics, minerals, solids, and other impurites from water. Reverse Osmosis uses RO membranes as its core separation technology to block these impurities. Pure Aqua utilizes the most reputable membrane manufacturers such as Dow Filmtec and Hydranautics, both of which design their products in the USA

As part of our industrial line, the RO-400 series machines can accommodate 28,800 to 172,800 GPD, with feed water TDS ranging from 1000 ppm to 5000 ppm. These machines come standard with media pre-filters, chemical dosing and antiscalant. Customization is available on all our units based on individual water application and customer needs.

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

Model Number Permeate Flow Rate Quantity of 8" Membranes Motor Rating at 1,000 ppm
GPD M3/D 60Hz (hp) 50Hz (kw)
TW-28K-1480 28,000 109 4 5 4
TW-36K-1580 36,000 136 5 7.5 4
TW-43K-1680 43,000 164 6 7.5 5.5
TW-57K-2480 57,000 218 8 7.5 7.5
TW-72K-2580 72,000 273 10 10 7.5
TW-87K-3480 87,000 327 12 15 11
TW-108K-3580 108,000 409 15 20 15
TW-130K-3680 130,000 491 18 20 15
TW-144K-4580 144,000 545 20 20 15
TW-173K-4680 173,000 655 24 20 18.5

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 130,000 GPD with a feed water TDS of 5,000 ppm, the corresponding model number is: “BW-130K-3680-5”.

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


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

Quick after sale.

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

I have a great experience in many water treatment systems manufactured by Pure Aqua, Inc. They have great design and after sales service.

by: Ahmad Q. from

ISO 9001

Services: 5 Stars 5 Stars
Quality: 5 Stars 5 Stars
Delivery: 5 Stars 5 Stars
For my product water quality, this product has been doing good. I get great water quality for bottling application.

by: R. Siddique from

Video on Brackish Water Reverse Osmosis Plant Yemen

Brackish Water Reverse Osmosis Plant was manufactured for a major company in Yemen. The objective was to produce drinking water with less than 500 ppm. The product water capacity was 108,000 GPD from a well water of approximately 1000 ppm TDS. The plant came complete with an RO system, chemical dosing system, cleaning skid, and a degasifier. The TW-108K-3580 system was selected from our RO-400 series while the FDD-75 degasifier was selected from our FDD series. ..more->