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Cochrane Delta Reverse Osmosis System

Choosing The Right Reverse Osmosis (RO) System

What is Reverse Osmosis? The RO process uses a semi-permeable membrane to separate and remove dissolved solids, organics, pyrogens, submicron colloidal matter, viruses, and bacteria from water. The process is called ‘Reverse’ Osmosis since it requires pressure to force pure water across a membrane, leaving the impurities behind. Reverse Osmosis is capable of removing 95-99% of the total dissolved solids (TDS) and 99% of all bacteria, thus providing safe, pure water.

To select the right Reverse Osmosis system for your application, there are four primary considerations:

  • Type of Raw Water
  • Quality of Product Water Required
  • Capacity of the Product Water Required or Flowrate
  • Special Features such as Storage, Repressurization, Mounting

Newterra offers 3 different lines of Reverse Osmosis Equipment

Whole house residential, commercial and light industrial standard RO units are offered under our EPRO by Newterra brand.

Robust industrial reverse osmosis systems, both standard, and custom are offered under our Cochrane brand with the DELTA series.

Larger seawater RO units (SWRO) for potable water and commercial use are offered under the Newterra brand with the SeaMega series. The SeaMega series is offered in both skid-mounted and fully containerized models.

Note that even though noted as Skid Mounted, all of Newterra’s equipment can be Modularized in Pre-Fabricated buildings or Containerized into a Modular Facility.

Use the chart below to help in choosing the right reverse osmosis system. Note for UltraPure Water quality post-treatment of the RO is necessary.

Raw WaterQuality RequiredVolume RequiredRecommended ModelSpecial Features
TAP Water
TDS to 1,500 ppm
High Purity
TDS < 10 ppm
UP to 10,000 gpdEPRO Double PassSkid Mounted
Over 10,000 gpdDELTA Double PassSkid Mounted
Potable or Process Water
TDS >10 ppm
UP to 8,000 gpdEPRO Series SystemsSkid Mounted
7 to 15 gpmEPRO-1000
DELTA Series
Skid Mounted
8 to 400 gpmDELTA SeriesSkid Mounted
Brackish Water
TDS up to 10,000 ppm
High Purity Water
TDS < 10 ppm
Up to 10,000 gpdEPRO Double PassSkid Mounted
Over 2 gpmDELTA Double PassSkid Mounted
Potable or Process Water
TDS > 10 ppm
Up to 10,000 gpdEPRO Brackish WaterSkid Mounted
8 to 400 gpmDELTA SeriesSkid Mounted
Sea WaterPotable or Process Water
TDS>500 ppm
Up to 6,000 gpdEPRO Sea WaterSkid Mounted
Over 5 gpmSeaMega/SSkid Mounted
Over 5 gpmSeaMega/CContainerized
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