Abstract
Applicability of ceramic ultrafiltration membrane modifications were studied with laboratory units to purify clear filtrate and biologically treated combined wastewater from high quality board manufacturing process for reuse. Also performance of polymeric membrane and ceramic membrane was compared. The performance of the membrane filtration cell, developed according to requirements of the fixed dimensions of ceramic membrane was compared with the performance of the cross-rotational commercial test unit (CR-filter) of polymeric membranes. The quality of ultrafiltration permeate, namely suspended solids, turbidity and colour, was better than the quality of lake water used in the mill. The permeate fluxes were in the range of 60-75 l/m{sup 2}h. The fouling layer primarily controlled the flux and the retention, leaving the effects of surface modifications as the secondary function. The flux was slightly higher with the biologically treated wastewater. Differences in membrane material and pore size had an effect on the cleaning ability of the membranes. The polymeric membrane and the membrane with smaller pore size were easier to clean. Tests with the CR-filter showed that the rotor increases shear forces, reduces the filtration resistance and thus increases the flux compared to the cell for ceramic membranes where the increase of shear forces can
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Laitinen, N;
Luonsi, A;
Levaenen, E;
Maentylae, T;
Vilen, J
[1]
- Haemeen ympaeristoekeskus, Tampere (Finland)
Citation Formats
Laitinen, N, Luonsi, A, Levaenen, E, Maentylae, T, and Vilen, J.
Ceramic membrane in production of recycled water; Keraamikalvo uusioveden valmistuksessa - EKT 05.
Finland: N. p.,
1998.
Web.
Laitinen, N, Luonsi, A, Levaenen, E, Maentylae, T, & Vilen, J.
Ceramic membrane in production of recycled water; Keraamikalvo uusioveden valmistuksessa - EKT 05.
Finland.
Laitinen, N, Luonsi, A, Levaenen, E, Maentylae, T, and Vilen, J.
1998.
"Ceramic membrane in production of recycled water; Keraamikalvo uusioveden valmistuksessa - EKT 05."
Finland.
@misc{etde_703376,
title = {Ceramic membrane in production of recycled water; Keraamikalvo uusioveden valmistuksessa - EKT 05}
author = {Laitinen, N, Luonsi, A, Levaenen, E, Maentylae, T, and Vilen, J}
abstractNote = {Applicability of ceramic ultrafiltration membrane modifications were studied with laboratory units to purify clear filtrate and biologically treated combined wastewater from high quality board manufacturing process for reuse. Also performance of polymeric membrane and ceramic membrane was compared. The performance of the membrane filtration cell, developed according to requirements of the fixed dimensions of ceramic membrane was compared with the performance of the cross-rotational commercial test unit (CR-filter) of polymeric membranes. The quality of ultrafiltration permeate, namely suspended solids, turbidity and colour, was better than the quality of lake water used in the mill. The permeate fluxes were in the range of 60-75 l/m{sup 2}h. The fouling layer primarily controlled the flux and the retention, leaving the effects of surface modifications as the secondary function. The flux was slightly higher with the biologically treated wastewater. Differences in membrane material and pore size had an effect on the cleaning ability of the membranes. The polymeric membrane and the membrane with smaller pore size were easier to clean. Tests with the CR-filter showed that the rotor increases shear forces, reduces the filtration resistance and thus increases the flux compared to the cell for ceramic membranes where the increase of shear forces can be done by increasing the flow velocities. (orig.)}
place = {Finland}
year = {1998}
month = {Dec}
}
title = {Ceramic membrane in production of recycled water; Keraamikalvo uusioveden valmistuksessa - EKT 05}
author = {Laitinen, N, Luonsi, A, Levaenen, E, Maentylae, T, and Vilen, J}
abstractNote = {Applicability of ceramic ultrafiltration membrane modifications were studied with laboratory units to purify clear filtrate and biologically treated combined wastewater from high quality board manufacturing process for reuse. Also performance of polymeric membrane and ceramic membrane was compared. The performance of the membrane filtration cell, developed according to requirements of the fixed dimensions of ceramic membrane was compared with the performance of the cross-rotational commercial test unit (CR-filter) of polymeric membranes. The quality of ultrafiltration permeate, namely suspended solids, turbidity and colour, was better than the quality of lake water used in the mill. The permeate fluxes were in the range of 60-75 l/m{sup 2}h. The fouling layer primarily controlled the flux and the retention, leaving the effects of surface modifications as the secondary function. The flux was slightly higher with the biologically treated wastewater. Differences in membrane material and pore size had an effect on the cleaning ability of the membranes. The polymeric membrane and the membrane with smaller pore size were easier to clean. Tests with the CR-filter showed that the rotor increases shear forces, reduces the filtration resistance and thus increases the flux compared to the cell for ceramic membranes where the increase of shear forces can be done by increasing the flow velocities. (orig.)}
place = {Finland}
year = {1998}
month = {Dec}
}