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Ultra-low Pressure Spiral RO Membrane Element
ES20-U

Realize 96% IPA Rejection and High Water Permeate Flow at The Same Time.
Outline
ES20-U is a fully aromatic polyamide ultra-low pressure spiral RO membrane element suitable for applications such as intermediate RO, post RO or recovery RO in ultrapure water production systems etc. Its excellent features allow drastic reduction in start-up time, facility costs and a required installation space while improving the quality of the permeate water.
Features
  • IPA rejection has been significantly increased to 96%.
  • Water permeate flow greatly increased.
  • Non-organic iron and TOC elution levels are minimal due to the maximized cleanliness of the membrane element.
Sizes
ES20-U8 Φ201×1,016L[mm]
ES20-U4 Φ99.5×1,016L[mm]
Performance
Product No. Rejection
[%]		 Permeate Flow
[m3/d]
Nominal Minimum
ES20-U8 96 32 28
ES20-U4 6.5 6
[Measurement method] ●Evaluation fluid: Pure water ●Operating pressure: 0.74MPa ●Water temperature : 25°C●Concentrate flow rate: U8=90L/min U4=20L/min
※ The figures are a sample of observed values, not guaranteed performance

Operating conditions
Item Unit Recommended operating condition Usage limit
Operating pressure MPa Set according to the designed flux Max.4.1
Operating temperature °C 5-30 Max.40
Concentration of residual chlorine mg/L 0 Max.1.0
(during cleaning)
pH range - - 1-11
(during cleaning)
Feed flow rate L/min - Max.  245
(48 for 4")
Concentrate flow rate 55-65
(15-25 for 4")		 Minimum.44
(12 for 4")
Pressure drop 1 element KPa <50 Max.80
Over 5 element <200 Max.410
※The figures shown are only for the purpose of guidelines and not the guaranteed figures.

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