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300GPD HJC Domestic RO Membrane Element (3012)


HJC 300GPD – 3012 Reverse Osmosis Membrane Element for Domestic Reverse Osmosis Systems

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HJC 2G Series Domestic RO Membrane Element

The Domestic 2G Reverse Osmosis Membrane developed by HJC Reverse Osmosis Membrane technology, for the purification of water with a low dissolved solids content such as tap water or non-brackish groundwater. The main applications are for home water purifiers, laboratory testing equipment, small demineralisation systems, coffee and ice machines.

HJC (2G) Series Domestic RO Membranes are applicable for water with a TDS up to 250ppm.

Testing Conditions:

  • Testing Pressure: 4.1 Bar (60 Psi)
  • Test Solution Temp: 25 ‘C (77’F)
  • Test Solution Concentration: 200ppm
  • Test Solution pH Value: 6.5 – 7
  • Single Membrane Recovery Rate: 15%

Operation & Feed Water Limits:

  • Max Working Pressure: 21 Bar (300 Psi)
  • Max Temp Feed Water: 45 ‘C
  • Max Feed Flow Rate: 0.45 m3/hour (2 GPM)
  • Silt Density Index (SDI): <5
  • Iron (Fe): < 0.1ppm
  • Manganese (Mn): < 0.05 ppm
  • Chlorine Concentration: < 0.1ppm
  • pH Range Continuous Operation: 2-11
  • Max Pressure Drop: 0.7 Bar
  • Permeate Flow Tolerance: 15%

HJC 3012-300GPD  RO Membrane Element Specifications

  • Active Membrane Area: 3.34 m2 (36 ft2)
  • Permeate Flow Rate: 1135 lts/day
  • Stable Rejection Rate: 97%
  • Membrane Dimensions: 3” (76.2mm) x 11.7” (298mm)

What is a Reverse Osmosis Membrane?

RO or Reverse Osmosis is a water purification technology that uses a semipermeable RO membrane to remove dissolved salts, metal ions and micro-organisms from water. In the reverse osmosis process, a pressure is applied to overcome osmotic pressure, a colligative property that is driven by chemical potential, a thermodynamic parameter.

Commercial RO Membranes can eliminate up to 99% of the Total Dissolved Solid Content of water with 1 pass through the membrane element. The economical variation in purification costs with an increased TDS makes Reverse Osmosis viable for desalinating brackish water with TDS concentrations of up to 10,000 ppm and for seawater purification at 49,000 ppm. Statistics show that Reverse Osmosis Technology is responsible for 42% of the total world desalination capacity, the largest contribution of 73% for the desalination of brackish water, while only 9% is for seawater applications.


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