CDRO Membrane Element

Overview

CDRO adopts an open flow channel. The feed liquid enters the pressure vessel via the inlet. The liquid to be treated flows into the flow guide disc over a short distance, reverses 180 degrees from one side of the membrane to the other, then enters the next flow guide disc, and finally exits through the outlet. This specialized design induces turbulence as the liquid flows across the membrane surface and collides with protrusions on the flow guide disc, boosting the permeation rate and enabling self - cleaning, thus extending the membrane's service life.

CDRO membranes are widely used in various water treatment applications: advanced treatment of municipal tap water, municipal sewage treatment and reuse, mine water treatment, steel and coking industry wastewater management, desalination and concentration of materials, general wastewater treatment, and near - zero discharge/reduction of industrial wastewater.

 

Technical Advantages

1. Wider flow channel of the deflector disc,

2. Avoids flow channel clogging,

3. Excellent self-cleaning performance,

4. Reduces concentration polarization,

5. Low pressure drop and high flow rate,

 

Technical specification

Model

CDRO-75

CDRO-90

CDNF-75

Membrane Material

Polyamide composite RO

Polyamide composite RO

Polypiperazine amide

Max Operating Pressure(bar)

75 

90 

75 

Membrane area(m²)

15 

15 

15 

Membrane Flux range(LMH)

5-30

5-30

5-50

Inlet Water Flow Range (L/H)

800-1200

800-1200

800-1200

Single Elembrane Recovery Rat(%)

<45%

<45%

<45%

Desalination Rate(%)

≥97%

≥97%

96.5%

Average pressure drop
of a single membrane (bar)

1-3

1-3

1-3

Width of Flow Path (mm)

2.5 

2.5 

2.5 

Tolerance to Residual Chlorine(ppm)

<0.1

<0.1

<0.1

Working temperature(℃)

5-40

5-40

5-40

PH Range

3-11

3-11

3-11

Size(mm)

275×275×1745

275×275×1745

275×275×1745

Test Conditions

5000 ppm NaCl,
operating pressure of 3.0MPa,
Water temperature at 25℃,
pH value of 8,
recovery rate of 30%

32000 ppm NaCl,
operating pressure of 5.0 MPa,
Water temperature at 25℃,
pH value of 8,
recovery rate of 8%

2000 ppm MgSO4,
operating pressure of 2.0 MPa,
Water temperature at 25℃,
pH value of 8,
recovery rate of 30%

 

The above data need to be adjusted according to the water quality conditions.

Dimensions of CDRO Membrane Module

A (mm)

B(mm)

C(mm)

D(mm)

E(mm)

F(mm)

G(mm)

H(mm)

1790 

 43 

1670 

M27X1.5

275 

95.5 

 75 

φ294

Note: Inlet/outlet pipe size: M26 x 1.5; Product water outlet size: NPT 1/2”

 

CDRO Column Schematic Diagram

 

● Product performance may vary under different conditions. The information on this website is for reference only and is not intended to be used as a basis for performance guarantees in actual applications. WSD reserves the right to make changes. If required, clients may consult with our sales representatives about the latest information, of which no further notice will be given.