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Ultrafiltration Ceramic Flat Membrane Ultrafiltration Ceramic Membrane Filters for Industrial Waste Water

* Ceramic filtration membrane is a new generation of inorganic ceramic membrane.
* It uses inorganic materials such as Al2O3, ZrO2, TiO2, SiO2, SiC, and one or more components of kaolin as raw materials to make porous structure support.
* Then it is prepared by surface coating technology.
* Finally it is sintered at high temperature.
* Ceramic filtration membrane can be divided into plate type, tubular type and multi-channel type.
Availability:
Quantity:
  • N150

  • NanoMem

1. Characteristics of ceramic membrane

Material excellent - high corrosion resistance, high strength, heat resistance, suitable for solvent or oil, and suit for many kinds of drainage.

Long service life- the ceramic filter membrane system has a longer service life compared with the hollow fiber membrane, so the full life cost is the lowest.

Energy saving - the membrane surface is not easy to stain, and the replacement structure design.

Maintenance free -automatic control system can reduce the daily maintenance.

Membrane bioreactor (MBR) vs. conventional activated sludge (CAS) process

Figure 1-1 Membrane bioreactor (MBR) vs. conventional activated sludge (CAS) process.


2. Products model

Principle

The model of ceramic membrane is made up of alphabetic code and Arabia numeric code. The model includes, but it does not contain the following code. The rules of ceramic filtration membrane sheet are as follows

"N150" refers to the ultrafiltration membrane, which uses alumina as the main component, the width of the ceramic filter membrane is 150mm, and the nominal pore size is 100nm.


The Parameters of ceramic filtration membrane sheet

Model N50 N75 N145 N150
Structure Asymmetry
Type Plate
Filter Methods Negative pressure filtration
Materials AI203
Water purification channel(mm) 25 25 43 43
Dimension(mm) 50*250*2.5 75*400*2.5 145*600*4 150*510*4
Weight(kg) 0.15 0.2 0.61 0.5
Membrane area 0.025 0.06 0.16 0.15
Max Operating Pressure(Mpa) -0.1~0.3
Operating temperature(℃) 10~75
Pore size(um) 0.02/0.05/0.1/0.2
Porosity 0.3 0.34 0.35 0.4
Pure water flux(m^3/(m^2.d) 25 25 50 50
Bending strength(Mpa) 80 80 80 80

Note: 1) Membrane's weight refers to the dry memrbane quality, where A represents aluminum oxide material and C represents silicon carbide material;

2) The pure water flux test pressure is 100Kpa.

3. Product parameters

Micrograph of ceramic membrane

QQ截图20180828132110

Figure 3-1 cross-section SEM micrograph of ceramic filtration membrane sheet.

Through different production processes can be made into symmetric- and asymmetric- type ceramic filtration membrane. The pore structure of ceramic filter membrane can be obtained through pore size control.

QQ截图20180828132128

Figure 3-2 Pore distribution of ceramic filtration membrane sheet

Trans-membrane pressure

The relationship between flux and pressure, the flux can be quickly recovered by simple cleaning. Moreover, the trans-membrane pressure (TMP) of the ceramic filter membrane is 50% lower than that of the organic membrane.

QQ截图20180828132138

Figure 3-3 trans-membrane pressure (TMP) recovery of ceramic membrane

Hydrophilic

Ceramic materials are inherently hydrophilic, less wetting than water, and water spreads on the surface of ceramic membrane, which is more conducive to sewage separation than organic materials.

QQ截图20180828132157


Figure 3-4 hydrophilic of ceramic membrane.


Water temperature calibration

For application with large temperature variations, temperature correction should be taken in consideration. The calibration coefficient is set to 1 at 25 C. The calibration coefficient is read out from Figure 1-8 according to the actual design temperature. The actual design flux is the product of nominal flux at 25 C and temperature correction coefficient.


QQ截图20180828132212

Figure 3-5 Calibration curve of water temperature and flux for ceramic membrane


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