Fluid processing system

A method of processing a fluid using a fluid processing system comprising a housing and at least one of a first type module and at least one of a second type module, said first and second type modules each comprising a body of wound layers of a sheet material,

• said body having an inner and an outer peripheral surface, a first and a second end face, a winding axis and a passage extending along the winding axis of said body and in fluid communication with said inner peripheral surface, the passage of one of the first type and one of the second type modules being closed at one end thereof,
• said sheet material having a plurality of openings formed therein,
• said openings forming at least a first and a second type of channels within the wound layers of sheet material of said body,
• said channels extending in a direction from the inner peripheral surface to the outer peripheral surface,
• the first type of channels being open at one end at said outer or said inner peripheral surface of the body and closed at the other end located adjacent to said inner peripheral or outer peripheral surface,
• the second type of channels being open and closed at the respective other ends or closed at both ends thereof,
• said channels of the one type being separated from the channels of the other type by portions of sheet material,
• the first and second modules having different fluid processing characteristics,
• said housing having an inlet port and an outlet port and accommodating said first and second modules,
• the inlet port of the housing being in fluid communication with the end faces and/or one type of channels of the first type modules serving as inlet channels,
• the outlet port of the housing being in fluid communication with the end faces and/or one type of channels of the second type modules serving as outlet channels,
• comprising supplying a fluid to the inlet port of the housing and discharging a filtrate from the outlet port of the housing.