Product Introduction

The Daltonen Membrane BW series reverse osmosis membrane components utilize a short membrane structure to increase the number of membrane pages and greatly improve membrane efficiency, providing economical, stable, and excellent membrane components for water treatment systems. The BW series comes in two sizes, 8-inch and 4-inch, and is widely used in various fields such as desalination of brackish water, boiler feed water in thermal power plants, surface water, petroleum, and petrochemical industries with nearly zero discharge of wastewater. The BW brackish water series membrane components have low operating pressure and high removal rates for difficult to treat soluble salts such as TOC and SiO2, providing a more cost-effective choice for industrial applications.


Product advantages

· Stable membrane performance and high organic matter removal rate

· Low operating pressure, balancing high water yield and operating costs

· Meet the near zero discharge standard for industrial wastewater

· 35mil special inlet channel, more resistant to pollution


Product size


SizeA inch (mm) SizeB inch (mm) SizeC inch (mm) SizeD inch (mm)
DA-BW400-PURE 40(1,016) / 1.125(29) 7.9(201)
DA-BW4040-PURE 37.9(963) 1.05(26.7) 0.75(19) 3.9(99)



Product parameters


ModelEffective area(㎡) Stable boron removal rate% Stable rejection rate%     Water yield gpd(m³/d)
DA-BW400-PURE 45°C (113°F) 99.6 99.4 11,000(42)
DA-BW4040-PURE 857.9) 99.6 99.4 2,050(7.8)


Test conditions: inlet pressure 1.55 MPa (225 psi); The inlet temperature is 25 ℃ (77 ° F); Inlet water quality 2000 ppm NaCI;

For more information, please call the hotline 0755-66611508 or download the technical manual.

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