Low-Pressure Spiral RO Membrane Element
NTR-759HR

Excellent Nacl rejection performance and high water permeability flow at low pressure operation.

Outline

NTR-759HR demonstrates a high separation performance under lower operating pressure compared to conventional cellulose acetate reverse osmosis membrane elements. The NaCl rejection rate is over 99%, and the performance of low molecular weight organic compound rejection is also very high .

Features

• At low pressure operations of less than 1.5MPa, this model attains a comparable or higher water permeate flow than conventional mid-pressure reverse osmosis membranes operating at 3.0Mpa.
• With the adoption of a composite membrane comprising an ultra-thin fully aromatic polyamide membrane on a polysulfone support layer, excellent NaCl rejection performance is exhibited at low pressure operation.
• High energy efficiency and low operating costs are achieved with its high performance at low pressure operation.

Applications

NTR-759HR is available for:

• Primary pure water systems, sub-systems, and recovery systems of ultrapure water systems it is used in the semiconductor industry.
• Concentration processes, NaCl rejection, or recovery of valuable components from waste water it is used in the food industry.
• Recovery of valuable resources it is used in various industries.

Sizes

NTR-759HR	S8	Φ201×1,016L[mm]
	S4	Φ99.5×1,016L[mm]
	S4F	Φ99.5×1,016L[mm]

Performance

Element form		Rejection[%]		Permeate flow [m3/d]
		Nominal	Minimum	Nominal	Minimum
NTR-759HR	S8	99.5	99.0	30	26
	S4	99.5	99.0	7	6
	S4F	-		-	6

[Measurement method]

Evaluation fluid: 0.15 NaCl solution

Operating pressure: 1.47MPa

Water temperature : 25°C

Concentrate flow rate: S8=90L/min S4, S4F=20L/min

[Remarks]

*The figures are a sample of observed values, not guaranteed performance.

Rejection ratio of various solutes [%]

MgSO4	99.9
SiO2	99.3
Isopropyl alcohol	97
Glucose	99.8
Sucrose	＞99.9

[Measurement method]

Operating pressure: 1.5MPa

[Remarks]

*The figures are a sample of observed values, not guaranteed performance.