Lenntech Water treatment & purification Lenntech Water treatment & purification

Filmtec XLE-440

Filmtec XLE-440 membrane

Extra Low Energy RO Element.

The FILMTEC™ XLE-440 is an extra low energy, high productivity brackish water reverse osmosis element designed to deliver high quality water at low operating costs for municipal and industrial water applications..

Product name XLE-440
Part number 101060
Nominal Active Surface Area 440 (41) ft2 (m2)
Permeate Flow Rate 12,700 (48) gpd (m3/d)
Stabilized Salt Rejection 99 %
1. Permeate flow and salt rejection based on the following test conditions: 500 ppm NaCl, pressure specified above, 77°F (25°C) and 15% recovery.
Membrane Type Polyamide Thin-Film Composite (Filmtech)
Maximum Operating Temperature 113°F (45°C)
Maximum Feed Flow Rate 14 (3.2) gpm (m3/hr)
Maximum pressure drop 15 psig (1.0 bar)
pH Range, Continuous Operation 2-11
pH Range, Short Term Cleaning 1-13
Maximum Feed Silt Density Index SDI 5
Free Chlorine Tolerance < 0.1 ppm

Product Dimensions in Inches (mm) A B C
XLE-440 40.0 (1,016) 1.5 (38) 7.9 (201)

Product data sheet (pdf) of the Filmtec XLE440 membrane

Important Information:

Proper start-up of reverse osmosis water treatment systems is essential to prepare the membranes for operating service and to prevent membrane damage due to overfeeding or hydraulic shock. Following the proper start-up sequence also helps ensure that system operating parameters conform to design specifications so that system water quality and productivity goals can be achieved. Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed. Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.

Operation Guidelines:

Avoid any abrupt pressure or cross-flow variations on the spiral elements during start-up, shutdown, cleaning or other sequences to prevent possible membrane damage. During start-up, a gradual change from a standstill to operating state is recommended as follows: Feed pressure should be increased gradually over a 30-60 second time frame. Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds. Permeate obtained from first hour of operation should be discarded.

General Information:

Keep elements moist at all times after initial wetting. If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void. To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution. The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements. Maximum pressure drop across an entire pressure vessel (housing) is 50 psi (3.4 bar). Avoid static permeate-side backpressure at all times.

Notice: The use of this product in and of itself does not necessarily guarantee the removal of cysts and pathogens from water. Effective cyst and pathogen reduction is dependent on the complete system design and on the operation and maintenance of the system. Notice: No freedom from any patent owned by Seller or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer’s use and for ensuring that Customer’s workplace and disposal practices are in compliance with applicable laws and other governmental enactments. Seller assumes no obligation or liability for the information in this document. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.

The FILMTEC™ XLE-440 is an extra low energy, high productivity brackish water reverse osmosis element designed to deliver high quality water at low operating costs for municipal and industrial water applications. Its high active area design coupled with the highly productive XLE membrane makes FILMTEC XLE-440 the lowest pressure RO element – resulting in lower energy costs.

XLE-440 will operate in many systems at less than half the feed pressure of a standard high rejection RO element and at up to 30% less pressure than other low energy membranes, resulting in lifetime energy savings greater than 100% of the initial membrane investment. With 440 square feet (41 square meters) of active membrane area, the FILMTEC XLE-440 element gives system designers the option of designing a system with fewer membrane elements, requiring lower capital expenditures for membranes and compenents. Automated, precision fabrication allows for the industry’s highest active membrane area without compromising the thickness of the feed spacer, resulting in less fouling, less cleaning downtime and lower operating costs than competitive products using thinner spacers. XLE-440 is perfectly suited for cold water feeds as the element’s high productivity will deliver lower energy costs and/or higher permeate flow.

Lenntech can also help you with similar brackish and seawater filters or filtration systems for optimum water purification and liquid filtration. Also we can provide other Filmtec type replacement membranes
Please feel free to contact us for any information on reverse osmosis water filters.

  • Filmtec membranes are a trademark of The Dow Chemical Company

Overview of all Filmtec membranes

For more information or quotation, please contact us: Feedback Form or call us on +31 152 610 900

About Lenntech

Lenntech BV
Distributieweg 3
2645 EG Delfgauw

tel: +31 152 610 900
fax: +31 152 616 289
e-mail: info@lenntech.com

Copyright © 1998-2017 Lenntech B.V. All rights reserved