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Spiral wound polymeric membranes

TECNOLOGY AND APPLICATIONS OF SPIRAL WOUND MEMBRANES

Cross flow polymeric membranes are available with different porosities (reverse osmosis, nanofiltration, ultrafiltration, microfiltration) and with different configurations (tubular, hollow fiber, flat sheet and spiral wound).
Each configuration offer advantages and disadvantages.

Spiral wound configuration is normally selected for its efficiency and low cost.

Elements are manufactured with two sheets of membrane rolled on a central permeate tube and separated by a concentrate spacer that create channels for feed flow.

Membrane elements are reinforced with an external fiberglass cage or with a polypropylene cage. On both ends there are supports (ATD) that avoid mechanical deformation of the membrane (telescoping).

A correct choice of construction material and manufacturing process allows to work on low to medium load fluids, at high/low pH and at high temperature, up to 90° C.

Feed solution is pressurized on one side of the element and part of the solution (permeate) can pass through the membrane and is collected in the permeate tube. The other part of the solution flows in concentrate channels and is collected on the other side of the element with all components that cannot go through the membrane.

Spiral wound membranes are finally very tight filters that operate with the following advantages:

  • self-cleaning: small solids and solutes are collected in the concentrate stream as turbulent flow keeps them away from membrane surface and mantaint it clean;
  • no heating: no product degradation and low energy consumptions;
  • submicron filtration: it is possible to operate filtration at macromolecular, molecular and ionic level with concentration, purification and separation of low molecular wight solutes.

SEPRA works jointly with SUEZ (formerly GE) for which is Channel Partner on the Italian market, making available a wide range of standard products for the most common applications. Moreover SEPRA is able to make custom membranes available in special construction for particular processes.

Some models available:

AD 2540FF

AD 400

AD 400 LE

AD 4040FF

AD 4040FM HR

AD 440 LE

AD 8040F

AD 8040F HR

AD 8040F HR

AD 90 LE

AD-365

AD-400,34

AD-440

AD-90

AE-400

AE-400, 34

AE-440

AE-90

AF8040F-430 HR

AG1812

AG1812HR

AG1812LF

AG2026TM

AG2425T

AG2514TF

AG2514TM

AG2521TF

AG2521TM

AG2526TM

AG2540FM

AG2540TF

AG2540TM

AG3218T

AG3218TM

AG3308T

AG-365

AG-400

AG-400 LF

AG-400 LF, 34

AG-400, 34

AG4014TF

AG4014TM

AG4021TF

AG4021TM

AG4025T

AG4025T

AG4026F

AG4026F

AG4040C

AG4040CM

AG4040F LF, WET

AG4040FM

AG4040NM

AG4040TF

AG4040TM

AG-440

AG-440 LF

AG8040C

AG8040C

AG8040F

AG8040F

AG8040F 2PASS

AG8040F 400

AG8040F 400 LF, WET

AG8040F,wet HR

AG8040F,wet HR

AG8040F-400 FR 34

AG8040F-400 LF, 34 WET

AG8040F-400,wet HR

AG8040F-400,wet HR

AG8040F-430,wet HR

AG8040F-430,wet HR

AG8040N

AG8040N 400

AG8340F 400

AG-90

AG-90 LF

AK1812

AK2521TF

AK2521TM

AK2526TM

AK2540FM

AK2540TM

AK3218TM

AK-365

AK-400

AK-400 LE

AK-400,34

AK4014TF

AK4014TM

AK4021TM

AK4040C

AK4040CM

AK4040FM

AK4040FM

AK4040NM

AK4040TM

AK-440

AK-440 LE

AK8040C

AK8040F

AK8040F 400

AK8040F HR

AK8040F-400 HR

AK8040F-400 WET

AK8040F-400 WET

AK8040N

AK8040N 400

AK-90

AK-90 LE

AP-365

AP-400

AP-90

CD4025T

CD4040F

CD8040F

CD8040F,WET

CE2026TM

CE2540FM

CE4025T

CE4026F

CE4040C

CE4040F

CE4040FM

CE4040NM

CE8040F

CE8040N

CG2540FM

CG4040F

CG8040F

CK2540FM-30D

CK4040FM

CK8040F

CK8040F-365

CK8040N

Dairy AF3838C30

Dairy AF3838C50

Dairy AF3840C30

Dairy AF3840C50

Dairy AF8038C30

Dairy AF8038C50

Dairy DK3838C30

Dairy DK3840C50

Dairy DK8038C30

Dairy DK8038C50

Dairy DK8040C30

Dairy DL3838C30

Dairy DL3840C30

Dairy DL8038C30

Dairy HWS NF3838C50

Dairy HWS NF3840C30

Dairy HWS NF8038C50

Dairy HWS RO3840C30

Dairy HWS RO8038C30

DAIRY JX3840C50

DAIRY JX6338C50

DAIRY PT3838C30

DAIRY PT3838C50

DAIRY PT6338C30

DAIRY PT6338C50

DAIRY PT6338C65

DAIRY PT8038C30

DAIRY PT8038C65

DAIRY PW3838C30

DAIRY PW3838C50

DAIRY PW6338C30

DAIRY PW6338C50

DAIRY PW6338C65

DAIRY PW8038C30

DAIRY PW8038C50

DAIRY ULTRA UF3838C30

DAIRY ULTRA UF3838C50

DAIRY ULTRA UF6338C30

DAIRY ULTRA UF6338C50

DAIRY ULTRA UF8038C30

DAIRY ULTRA UF8038C50

Diary DK3840C30

DIARY PT8038C50

DK1812

DK2540C30

DK2540C50

DK2540F30

DK2540F50

DK-400

DK4040C30

DK4040C50

DK4040F30

DK4040F50

DK-440

DK8040C30

DK8040C50

DK8040F30

DK8040F50

DL1812

DL2540C1077

DL2540C50

DL2540F1072

DL2540F1073

DL2540F30

DL2540F50

DL4040C1025

DL4040C30

DL4040C50

DL4040F30

DL4040F50

DL8040C1064

DL8040C30

DL8040C50

DL8040C-50P

DL8040F1001

DL8040F1002

DL8040F30

DL8040F50

DURACID NF1812

Duracid NF2540F30

Duracid NF4040F35

Duracid NF8040F35

Duracon NF1 3840C50

Duracon NF1 8040C35

Duracon NF2 3840C50

Duracon NF2 8040C35

Duracon NF2 8040C50

Duracon RO1 8040C50

Duracon RO5 8040C35

Duracon RO5 8040C50

DURASLICK NF 4040 HS

DURASLICK NF 8040 HS

Duraslick NF2540

Duraslick NF4040

Duraslick NF8040

DURASLICK RO 4040 HS

DURASLICK RO 8040 HS

Duraslick RO2540

Duraslick RO4040

Duraslick RO8040

Duratherm EXL NF2540HR

Duratherm EXL NF2540HR

Duratherm EXL NF4040

Duratherm EXL NF4040

Duratherm EXL NF4040HR

Duratherm EXL NF4040HR

Duratherm EXL NF8040

Duratherm EXL NF8040

Duratherm EXL NF8040HR

Duratherm EXL NF8040HR

Duratherm EXL RO2540HR

Duratherm EXL RO2540HR

Duratherm EXL RO8040HR

Duratherm EXL RO8040HR

Duratherm EXL UF2 8040

Duratherm EXL UF2 8040

DURATHERM HWS NF 2540 HF

DURATHERM HWS NF 8040 HF

DURATHERM HWS RO 2521

DURATHERM HWS RO 2526

DURATHERM HWS RO 2540

DURATHERM HWS RO 2540 HR

DURATHERM HWS RO 4014

DURATHERM HWS RO 4040

DURATHERM HWS RO 8040

DURATHERM HWS UF 2540 HF

DURATHERM HWS UF 4040 HF

DURATHERM HWS UF 8040 HF

Duratherm STD RO4040

Duratherm STD RO4040

Duratherm STD RO8040

Duratherm STD RO8040

Duratherm STD UF8040HR

Duratherm STD UF8040HR

EW2540F-30P

EW2540F-50P

EW3220TM

EW3310TM

EW4025T

EW4026F

EW4040C1024

EW4040FM

EW4040TM

EW8040C1133

EW8040F

GE2540F30

GE2540F50

GE4040C50

GE4040F30

GE8040F30

GE8040F50

GH2540C50

GH2540F30

GH4040F30

GH4040F50

GH8040C30

GH8040C50

GH8040F30

GH8040F50

GK2540F30

GK2540F50

GK4040F30

GK4040F50

GK8040C50

GK8040F30

GK8040F50

GM2540F1072

GM2540F1073

GM8040F1001

GM8040F1002

GM8040F1004

HL1812

HL2514TF

HL2521TM

HL2540FM

HL2540FM

HL2540TF

HL2540TM

HL3218T

HL4014TM

HL4021TF

HL4021TM

HL4040FM

HL4040FM

HL4040TF

HL4040TM

HL8040F

HL8040F 365

HL8040F-365

HL8040F-400

HL8040N

HP4040F30

HP4040F30

HP8040F30

HP8040F30

INDUSTRIAL RO3 4040F35

INDUSTRIAL RO3 4040F50

INDUSTRIAL RO3 8040F35

INDUSTRIAL RO3 8040F50

INDUSTRIAL RO5 4040F35

INDUSTRIAL RO5 8040F35

INDUSTRIAL RO5 8040F50

INDUSTRIAL RO6 4040F35

INDUSTRIAL RO6 8040F35

JW2540C-50P

JW2540F-50P

JW4040C-50P

JW8040F-34

JX2540F30

JX2540F50

JX4040C30

JX4040F30

JX4040F50

JX8040F30

JX8040F50

MUNI NF 400

MUNI NF 400

MUNI RO 400 HR LE

MUNI RO 400 LE FF WT

MUNI RO 400 ULE WT

MUNI RO 430 HR LE

MUNI-NF-365

MUNI-NF-365-FF

MUNI-RO-365-FF

MUNI-RO-365-LE-FF-WT

MUNI-RO-365-LE-WT

MUNI-RO-365-WT-FF

MUNI-RO-400

MUNI-RO-400-LE-FF-WT

MUNI-RO-400-LE-WT

MUNI-RO-400-WT

MW2540F30

MW4040F50

MW8040C50

MW8040F50

OSMO 411-HR(CA)

OSMO 411-HR(PA)

OSMO 416-HR(CA)

OSMO 416-HR(PA)

OSMO 416-USPG

OSMO 811-HR(CA)

OSMO 811-HR(PA)

OSMO 813-HR(CA)

OSMO 813-HR(PA)

OSMO 813-USPG

OSMO 815-HR(CA

OSMO 815-HR(PA)

OSMO 817-HR(CA)

OSMO 817-HR(PA)

OSMO 817-USPG

OSMO HR CA

OSMO HR(PA)

OSMO-BEV-NF-FF

OSMO-BEV-RO-CA-FF

OSMO-BEV-RO-FF

OSMO-BEV-RO-LE-WT-FF

OSMO-BEV-RO-WT-FF

OSMO-BEV-UF-FF

OSMO-BEV-ULE-CG-WT

PHARMA NF2 3838C30

PHARMA RO3 3840C30

PHARMA RO3 8038C35

PHARMA UF1 3840C30

POLISHER RO8040C30

PRO-RO-365-WT

PRO-RO-400-WT

PRO-RO-4040-WT

PT8038C-65D

PT8040C50

PT8040F30

PW2540C30

PW2540F30

PW2540F50

PW4025T

PW4040C30

PW4040C50

PW4040F30

PW8040C50

PW8040F30

PW8040F50

PW8340C50

SE1812

SE2540F30

SE2540F50

SE4040C1027

SE4040F102

SE8040C1065

SE8040C30

SE8040F1002

SE8040F1013

SG1812

SG2540F1072

SG2540F1073

SG2540F30

SG2540F50

SG4040C1024

SG4040C1025

SG4040C30

SG4040F1117

SG8040F1001

SG8040F1002

SG8040F1065

SG8040F30

SWSR-400

SWSR-440

SWSR-90

Vinoclear MF 8040C50

Vinocon RO1 4040C30

Vinocon RO1 4040C50

Vinocon RO1 8040C35

Vinocon RO3 4040C35

Vinocon RO5 4040C35

Vinopro NF4040C35

Vinopro NF4040C50

Vinopro NF8040C50

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