Asahi Kasei Membrane (Water Clarification Field)

Environment
Brands

Asahi reputable UNA series membranes have long history operating in worldwide. The membrane is carefully developed and design in Japan with high manufacturing technology.

ASAHI KASEIMF MEMBRANE – WATER CLARIFICATION FIELD

A Pioneer of PVDF Hollow Fiber Membrane.

Membrane Filtration has become a visible option for potable water treatment and reuse of municipal and industrial wastewater effluents.

Polyvinylidene Fluoride (PVDF) has been recognized as a popular material for the fabrication of MF/UF membranes due to its high mechanical strength and chemical resistance. Asahi Kasei is a pioneer of PVDF Hollow Fiber Membranes, and we have successfully put PVDF membrane into practical use in many applications and accumulated experiences for more than 4 years.

Features

Asahi Kasei is a pioneer of TIPS* membranes and is developing new technologies for our customers.

*Thermally-induced Phase Separation
  • Symmetric structure from outer to inner surface.
  • Uniform pore and sharp pore size distribution.
  • High bonding network, higher mechanical strength and porosity.
  • High crystaliization, high chemical resistance.

Asahi is the pioneer to develop PVDF hollow fibers. Due to high success rate in USA market, it became the market leader in PVDF hollow fibers. Asahi hollow fibers membranes are made of high crystalline PVDF material.

High Crystalline PVDF

PVDF became so popular that most of the PES, PE membrane makers had switched toproducePVDF membrane as well. Not all PVDF membranes makers made homogenous structure except Asahi.

Therefore, it is suitable for wide application such as:

  1. Drinking water from river, reservoir or well
  2. Pretreatment of RO in Sea water desalination
  3. Waste water Reuse (Newater in Singapore)
  4. Pretreatment of RO in Semiconductor UPW system

Features

1. High integrity with strong PVDF membranes fibers.

2. High Chemical resistance able to clean various type of fouling substances with high concentration of alkali and acid
  • NAOH–4% (To clean organic substances, colloidal silica)
  • H2SO4, HCL, Citric Acid–10%(To clean inorganic colloid)
  • Oxalic Acid–2%(To clean inorganic colloid, eg. Manganese)
  • NaOCL–5,000ppm as Cl2(To clean Fungi, organic compound)
  • Wide PH range for chemical cleaning: 1-1

3. Long life span due to physically tough High Crystalline PVDF membrane.

4. Easy operation and automated maintenance.

5. High Permeate Flux due to many permeability pores on membrane.

6. Sharp pore size distribution of pore size 0.1 micron.

7. Stable operation and less cleaning frequency.

8. TIPS Technology with homogeneous membrane structure.

9. High integrity, able to detect minimal pore size of 3micron conform to EPA standard.

10. Low SDI prolong the RO membrane life.

11. No coagulant dosing required.

12. Outside to Inside filtration robust design give less fouling onto membrane. Able to effectively operate in different and unexpected water conditions.

13. Technical support by periodical monitoring by Asahi Technical Team.

Please contact us for operating sequence and systemsizing projection today!

Microza UNA Series Pressurized Ulta Filtration Module

Dimensions*
Module Lenght(L₁)mm/ in Lenght(L₂)mm/ in Lenght(D₁)mm/ in Lenght(D₂)mm/ in
UNA620A-ADA 2418 / 95.2 272 / 10.7 165 / 6.5 221 / 8.7
*The above dimensions include the connection parts and are different from the dimensions on actual shipping configuration.

Specifications

Model: UNA620A-ADA
Performance*1 Process Capacity Typical Range:
2.0 - 12.0 m³/hr (9-53 gpm)
Dimensions / Weight Membrane Area: 50m² / 538 ft²
Module Length: 2418 mm / 95.2 in
Module Diameter: 165 mm / 6.5in
Weight: Empty 30kg (66lbs) / Filled with Water 60kg (132lbs)
Materials Membrane: PVDF (TIPS)*²
Housing: ABS
Potting: Polyurethane
Gaskets: EPDM
Wetting Solutions: 30% Calcium Chloride
Operating Parameter Outside-in Filtration Module . Filtration Pore SIze: 0.04um
Maximum Operating Temperature: 40°C (104F)
Maximum Transmembrane Pressure: 3 Bar (43PSI)
pH Range for Chemical Cleaning: 1 - 14
Available Free Chlorine Concentration for Chemical Cleaning: 5,000 ppm per cleaning
BW Flowrate Range: 3m³/hr (2-8m³/hr)
Air Scouring Flowrate: 5Nm³/hr
CIP Circulation Flowrate: 1-2m³/hr
Chemical Resistance*⁴ (maximum cleaning condition per cleaning) NAOCI 5,000 ppm as CI₂
NaOH 4%
HCI, H₂SO⁴, Citric Acid 10%
Dimensions*
Module Lenght(L₁)mm/ in Lenght(L₂)mm/ in Lenght(D₁)mm/ in Lenght(D₂)mm/ in
UNA620A-DCA 2300 / 90.5 150 / 5.9 218 / 8.6 269 / 10.6

Specifications

Model: UNA620A-ADA
Performance*1 Process Capacity Typical Range:
4.0 - 10.0 m³/h/17 - 44 gpm
Dimensions / Weight Membrane Area: 99m² / 1066 ft²
Module Length: 2300 mm / 90.5 in
Module Diameter: 218 mm / 8.6 in
Weight: Empty 45kg (99lbs) / Filled with Water 90kg (198lbs)
Materials Membrane: PVDF (TIPS)*²
Housing: ABS
Potting: Polyurethane
Gaskets: EPDM
Wetting Solutions: 30% Calcium Chloride
Operating Parameter Outside-in Filtration Module . Filtration Pore SIze: 0.04um
Maximum Operating Temperature: 40°C (104F)
Maximum Transmembrane Pressure: 2 Bar (29PSI)
Maximum Inlet Pressure: 3 Bar (43PSI)
pH Range for Chemical Cleaning: 0 - 14
Available Free Chlorine Concentration for Chemical Cleaning: 5,000 ppm per cleaning
BW Flowrate Range: 3 - 8m³/hr
Air Scouring Flowrate: 8.5Nm³/hr
CIP Circulation Flowrate: 3.0 - 3.5m³/hr
Chemical Resistance*⁴ (maximum cleaning condition per cleaning) NAOCI 5,000 ppm as CI₂
NaOH 4%
HCI, H₂SO⁴, Citric Acid 10%

Please contact us for operating sequence and systemsizing projection today!

Product Specialist
Solutions Consultant

Sector

Find more Sector.

In the heavy objects transport process, it is suitable for the work of lifting from waist-height to chest level and carrying horizontally avoiding obstacles above.

Sector 1

We handle all aspects of an integrated.

Sector 1

We handle all aspects of an integrated.

Sector 1

We handle all aspects of an integrated.

Sector 1

We handle all aspects of an integrated.

Sector 1

We handle all aspects of an integrated.

Sector 1

We handle all aspects of an integrated.

Sector 1

We handle all aspects of an integrated.

Sector 1

We handle all aspects of an integrated.

Product Specialist
Solutions Consultant
Scroll to Top