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Disk tubular RO/NF DTRO / DTNF

DTRO/DTNF Introduction

        

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Disk tubular membrane technology referred to as DT, common for disk tubular RO(DTRO) and disk tubular (DTNF). The membrane module structure is distinct from the traditional spiral wound membrane.With open flow channels,feed flows through the entrance into the pressure vessel and reach the disk in a short distance. Then the feed flows 180 degrees from one side of the membrane reverse flow into the other side of the membrane,into the next disk again and finally runoff from outlet.The special design makes feed collide with the disk bulge through the membrane surface forming turbulence which increases flow rate and self-cleaning function and long service life of the membrane.



Features

High strength design, up to 120 bar operating pressure

Open disk with low flow resistance and concentration polarization 

High pressure resistance and salt rejection membrane


Applications

Landfill leachate

High concentration of industrial wastewater

Spiral wound RO/NF concentrates

Industrial high salts water  

          


DTRO/DTNF module

DTRO/DTNF Membrane 

Disk 

SUS center link 

High pressure vessel

Inlet and outlet pipe and accessories

                              

                      


A typical process diagram




DTRO/DTNF Specifications

Items High pressure High pressure Super high pressure
   Mode SG-DTRO-1
SG-DTNF-1
SG-DTRO-2
   Membrane material
Composite Polyamide
Composite Polyamide
Composite Polyamide
   Disk qty. (pc)
209 209 209
   Rejection (%)
99 97 99
   Membrane effective area (m2)
9.4 9.4 9.4
   Feed flux (l/h)
500-1200 500-1200 500-1000
   Permeate flux range (l/h)
8-40 8-40 8-35
   Disk material
ABS ABS ABS
   Vessel materia
Fiberglass
Fiberglass
Fiberglass/SUS
   Operation pressure (bar)
75 75 120
   Max. TMP (bar)
9 9 9
   Max. operation temperature (℃)
40 40 40
   Chlorine tolerance (ppm)
<0.1
<0.1
<0.1
   Recommended operation pH
6-9 6-9 6-9
   Chemical cleaning  pH@40℃
2-11 2-11 2-11


Note:Performance data above is the nominal value. The actual permeate flux of individual module may be in ±15% range.                Test condition: RO: NaCl 32,000mg/L@800psi. NF: MgSO4 30,000mg/L@600psi.