General Information

• Hydrophilic membrane composed of a blend of polyvinylpyrrolidone and polyethersulfone
• A nominal pore size of 20 nm
• Structure asymmetric/microporous
• High performance and a very good anti fouling behaviour
• Typical permeate quality SDI<3, turbidity <0,1 NTU
• Membrane filtration provides 99.9999% (LOG6) reduction of bacteria (Pseudomonas diminuta) and 99.99% (LOG 4) reduction of virus (MS2 colifages) by mechanical means. EPA Est. No. 090374-NLD-001

Module Dimensions

 Physical and Operating Specifications

Operation guidelines

• Max. system pressure: see specifications of membrane housing supplier.
  
• Backwash water should be free of particulates and should be of UF permeate quality or better.
  
• Backwash pumps should preferably be made of non-corroding materials, e.g., plastic or stainless steel. If compressed air is used to pressurize the backwash water, do not allow a two-phase air/water mixture to enter the element.
  
• To avoid mechanical damage, do not subject the membrane module or element to sudden temperature changes, particularly decreasings. Do not exceed 40 °C process temperature. Bring the module or element back to ambient operating temperature slowly (max. value 3 °C/min). 

Storage

New membrane modules can be stored as supplied in the original packaging. The membrane modules contain an aqueous preservation solution of glycerine (20wt%) and sodium metabisulfite (1wt%) to prevent dehydration and control bacterial growth. The membrane modules are packed in plastic bags which are vacuum sealed to keep the moisture in the module. Membrane modules should be stored in a dry, normally ventilated place, away from sources of heat ignition and direct sunlight. Storage temperature should be between 0 and 40 °C.