Specifications

•  Proven performance
•  Delivers high quality permeate water while minimizing CAPEX
•  Offers the most effective cleaning performance, robustness and durability due to its widest cleaning pH range (1 – 13) tolerance and the support of DUPONT technical representatives

• Industrial water demineralization
• Production of municipal drinking water
• Water reuse

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, shutDUPONTn, 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 DUPONT™ FILMTEC™ Reverse Osmosis and Nanofiltration Three-Year Prorated Limited Warranty (Form No. 609-35010) will be null and void.
• To prevent biological growth during prolonged system shutDUPONTns, 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.

Advantages

• High rejection results in excellent water quality
• Low energy usage reduces power consumption and costs
• durable with good cleanability for long element life
• Filmtec Performance and quality

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, shutDUPONTn, 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 shutDUPONTns, 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 30 psi (2.1 bar).
• Avoid static permeate-side backpressure at all times.

Specifications

• Offers all of FilmTec’s industry-leading benefits coupled with a unique combination of low energy and high salt rejection
• Provides improved hydraulic balance which enables system energy savings
• Delivers excellent silica, boron, nitrate, TOC and ammonium rejection
• Provides increased active area with the most effective cleaning performance, robustness and durability due to its widest cleaning pH range (1 – 13) and chemical tolerance and the support of Dow technical representatives
• Includes iLEC™ interlocking end caps, reducing system operating costs and the risk of o-ring leaks that can cause poor water quality

• Industrial water demineralization

Specifications

• Offers high salt rejection at low pressure
• Delivers excellent silica, boron, nitrate, TOC and ammonium rejection
• Provides increased active area with the most effective cleaning performance, robustness and durability due to its widest cleaning pH range (1 – 13) and chemical tolerance and the support of Dow technical representatives
• Includes iLEC™ interlocking end caps, reducing system operating costs and the risk of o-ring leaks that can cause poor water quality

• Industrial water demineralization

Specifications

• Offers all of FilmTec’s industry-leading benefits coupled with a unique combination of low energy and high salt rejection
• Delivers excellent silica, boron, nitrate, TOC and ammonium rejection
• Provides increased active area with the most effective cleaning performance, robustness and durability due to its widest cleaning pH range (1 – 13) and chemical tolerance and the support of Dow technical representatives

• Industrial water demineralization

Specifications

• Offers high salt rejection at low pressure
• Achieves reduction of the fouling impact by minimized pressure drop
• Delivers excellent silica, boron, nitrate, TOC and ammonium rejection
• Provides most effective cleaning performance, robustness and durability due to its widest cleaning pH range (1 – 13) and chemical tolerance and the support of Dow technical representatives

• Industrial water demineralization
• Water reuse

Specifications

• Offers good salt rejection with 33% lower pressures
• Delivers excellent silica, boron, nitrate, IPA and ammonium rejection
• Provides increased active area with the most effective cleaning performance, robustness and durability due to its widest cleaning pH range (1 – 13) and chemical tolerance and the support of Dow technical representatives
• Includes iLEC™ interlocking end caps, reducing system operating costs and the risk of o-ring leaks that can cause poor water quality

• Industrial water demineralization

Specifications

• Offers good salt rejection with 33% lower pressures
• Delivers excellent silica, boron, nitrate, IPA and ammonium rejection
• Provides increased active area with the most effective cleaning performance, robustness and durability due to its widest cleaning pH range (1 – 13) and chemical tolerance and the support of Dow technical representatives

• Industrial water demineralization

Specifications

• Offers good salt rejection with 30% lower pressures
• Delivers excellent silica, nitrate and ammonium rejection
• Provides the most effective cleaning performance, robustness and durability due to its widest cleaning pH range (1 – 13) and chemical tolerance and the support of Dow technical representatives
• Includes iLEC™ interlocking end caps, reducing system operating costs and the risk of o-ring leaks that can cause poor water quality

• Industrial water demineralization
• Water reuse