D/T Module: Graywater

The modular design consists of individual thin film composite membranes supported by 'o' rings between hydraulic cover disks, stacked, and assembled about a center tension rod and
effectively sealed between metal end flanges. The proven open
channel design provides a fully turbulent flow, high permeate
recovery and reduced membrane fouling.

Disc Tube Module Operation

Greywater flows down passages between the disc stack and the pressure vessel and enters the flow chamber from beneath the bottom disk. The flow is directed up and over each membrane cushion allowing pure water to pass through the porous membrane and be collected by the permeate collector. Feedwater contamination is prevented by "O" ring seals fitted to the hydraulic disks. As the pure water is removed the concentrate can be treated further, held in a collection tank or incinerated.

Flow Diagram

Features and Benefits

The Pall Marine DT Module is designed to overcome the problems experienced by other module configurations:

• High performance and low operating costs.
• Modular construction for installation into available spaces.
• Worldwide service network with 20 years experience on membrane systems.
• Unrestricted, open channel, turbulent feedwater flow.
• No chemical pre or post treatment required.
• High permeate recovery rates.

  85 - 90% recovery rates. Low environmental impact.

• Integrated self cleaning system.
• Simple and flexible maintenance procedures.
• Expected membrane life - 5 years plus.
• Low energy requirements.
• Automated failsafe operation.
• Quick, simple operation.
• Wide range of semi-standard systems capable of processing and discharging up to 600,000 liters of greywater waste a day.

For more information about Pall Disc Tube™ Modules, please contact a Pall representative to discuss your application.  Contact Pall