Arrangement for removing substances from liquids, in particular blood

An arrangement for the elimination of substances from a fluid to be purified, comprising

• a first and a second fluid circuit having at least one membrane filter therebetween capable of allowing passage therethrough of the substances to be eliminated, said membrane filter having a primary side in said first circuit and a secondary side in said second circuit,
• said fluid to be purified being located in said first circuit and
• said second circuit comprising an adsorbent containing suspension of particles for binding said substances to be eliminated,
• a first pump located in said first circuit for circulation of the fluid to be purified, and
• a second pump located in said second circuit for circulation of the adsorbent containing suspension,
• wherein said second pump is drivable at a forwarding speed so that there is a passage of the substance containing fluid across said at least one membrane filter between said first and second circuits, said pump in said second circuit being a means for achieving regionally occurring differentiable positive and negative transmembrane pressure on said membrane filter,
• wherein there is provided a detector located in said first circuit after the output of the primary side of the membrane filter, for noting defects in said filter, wherein the detector is an ultrasound filter which recognizes the presence of particles in the fluid of the first circuit.

An arrangement for the elimination of substances from a fluid to be purified, comprising

• a first and a second fluid circuit having at least one membrane filter therebetween capable of allowing passage therethrough of the substances to be eliminated, said membrane filter having a primary side in said first circuit and a secondary side in said second circuit,
• said fluid to be purified being located in said first circuit and
• said second circuit comprising an adsorbent containing suspension of particles for binding said substances to be eliminated,
• a first pump located in said first circuit for circulation of the fluid to be purified, and
• a second pump located in said second circuit for circulation of the adsorbent containing suspension,
• wherein said second pump is drivable at a forwarding speed so that there is a passage of the substance containing fluid across said at least one membrane filter between said first and second circuits, said pump in said second circuit being a means for achieving regionally occurring differentiable positive and negative transmembrane pressure on said membrane filter of 1-20 kPa wherein a fabric filter is provided after the output of the primary side of the membrane filter.

An arrangement for the elimination of substances from a fluid to be purified, comprising

• a first and a second fluid circuit having at least one membrane filter therebetween capable of allowing passage therethrough of the substances to be eliminated, said membrane filter having a primary side in said first circuit and a secondary side in said second circuit,
• said fluid to be purified being located in said first circuit and
• said second circuit comprising an adsorbent containing suspension of particles for binding said substances to be eliminated,
• a first pump located in said first circuit for circulation of the fluid to be purified, and
• a second pump located in said second circuit for circulation of the adsorbent containing suspension,
• wherein said second pump is drivable at a forwarding speed so that there is a passage of the substance containing fluid across said at least one membrane filter between said first and second circuits, said pump in said second circuit being a means for achieving regionally occurring differentiable positive and negative transmembrane pressure on said membrane filter,
• wherein there is provided a detector located in said first circuit after the output of the primary side of the membrane filter, for noting defects in said filter wherein, in the first circuit after the output of the primary side of the membrane filter, there is provided a magnetic field, and a trap arrangement,
• and wherein particles of the adsorbent suspension contain a magnetically active substance whereby, in the instance of a defect in the membrane filter, particles, which intrude into the primary side, are captured by said trap arrangement.

An arrangement for the elimination of substances from a fluid to be purified, comprising

• a first and a second fluid circuit having at least one membrane filter therebetween capable of allowing passage therethrough of the substances to be eliminated, said membrane filter having a primary side in said first circuit and a secondary side in said second circuit,
• said fluid to be purified being located in said first circuit and said second circuit comprising an adsorbent containing suspension of particles for binding said substances to be eliminated,
• a first pump located in said first circuit for circulation of the fluid to be purified, and
• a second pump located in said second circuit for circulation of the adsorbent containing suspension,
• wherein said second pump is drivable at a forwarding speed so that there is a passage of the substance containing fluid across said at least one membrane filter between said first and second circuits, said pump in said second circuit being a means for achieving regionally occurring differentiable positive and negative transmembrane pressure on said membrane filter,
• wherein there is provided a detector located in said first circuit after the output of the primary side of the membrane filter, for noting defects in said filter wherein two membrane filters are provided, the membrane of each filter having a primary side and a secondary side, the primary side of the first membrane filter and the primary side of the secondary membrane filter are connected in series by as first connection conduit and the secondary side of the first membrane filter and the secondary side of the second membrane filter are connected in series by a second connection conduit.

An arrangement for the elimination of substances from a fluid to be purified, comprising

• a first and a second fluid circuit having at least one membrane filter therebetween capable of allowing passage therethrough of the substances to be eliminated, said membrane filter having a primary side in said first circuit and a secondary side in said second circuit,
• said fluid to be purified being located in said first circuit and
• said second circuit comprising an adsorbent containing suspension of particles for binding said substances to be eliminated,
• a first pump located in said first circuit for circulation of the fluid to be purified, and
• a second pump located in said second circuit for circulation of the adsorbent containing suspension,
• wherein said second pump is drivable at a forwarding speed so that there is a passage of the substance containing fluid across said at least one membrane filter between said first and second circuits, said pump in said second circuit being a means for achieving regionally occurring differentiable positive and negative transmembrane pressure on said membrane filter,
• wherein there is provided a detector located in said first circuit after the output of the primary side of the membrane filter, for noting defects in said filter wherein a fabric filter is provided after the output of the primary side of the membrane filter.