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

[Remarks]

*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

[Remarks]

*The figures shown are only for the purpose of guidelines and not the guaranteed figures.