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%). 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.