3 different types of ceramic membranes

Ceramic Membranes for Filtering and Separating Tiny Impurities

Ceramic membranes, also known as inorganic ceramic membranes, are asymmetric membranes formed from inorganic ceramic materials through a special process. They are primarily made from Al, Si, Ti, or zirconia and silicon carbide. Their filtration range covers microfiltration to nanofiltration, and is capable of filtering colloids, pigments, salts, dyes, and other impurities. Additionally, inorganic ceramic membranes have high mechanical strength, excellent resistance to high temperatures, acid and alkali, oxidation, biological corrosion and backwashing, narrow pore size distribution, and high filtration accuracy. Due to their easy cleaning and sterilization, ceramic membranes are easier to clean and more effective than organic membranes, with a high flux recovery rate after cleaning.

  • Specification
  • Working Principle
  • Videos
Specification
  • Multiple tubular-ceramic-membranes

    Tubular ceramic membrane

  • A flat ceramic membrane

    Flat Ceramic Membrane

  • A high-packed column ceramic membrane

    High-packed column ceramic membrane

Multiple tubular-ceramic-membranes
  • The tubular-ceramic-membrane has a tubular multi-channel structure. This structure makes the tubular-ceramic-membrane have higher mechanical strength and can withstand higher water flow impacts.
  • Selected high-purity premium Al2O3, ZrO2, TiO2 as raw materials, they have chemical resistance, acid and alkali resistance, oxidation resistance, organic solvent resistance; high temperature resistance, good high-temperature disinfection and steam sterilization properties.
  • International advanced production formula enhances the hydrophilicity of the membrane, resulting in better ceramic membrane flux.
  • Leading dispersion technology is adopted for preparing nanoparticles, considering both the uniformity and strength of the ceramic membrane, and making the membrane layer have better anti-fouling performance.
  • Automation and standardization of the production process ensures that the quality the whole process can be traced.

Specifications

Table 1: Tubular Ceramic Membrane Specifications
Cross-Sectional Geometry Model Number of Channels Channel Diameter (mm) Membrane Length (mm) Membrane Area (m2)
Tubular ceramic membrane with one channel and a channel diameter of 8.0 mm
12 1 8.0 1000 0.025
Tubular ceramic membrane with 7 channels, each with a channel diameter of 2.7 mm
12 7 2.7 1200 0.071
Tubular ceramic membrane with 7 channels, each with a channel diameter of 5.5 mm
25 7 5.5 1178 0.178
Tubular ceramic membrane with 9 channels, each with a channel diameter of 5.5 mm
25 9 5.5 1178 0.178
Tubular ceramic membrane with 23 channels, each with a channel diameter of 3.6 mm
25 23 3.6 1178 0.300
Tubular ceramic membrane with 19 channels, each with a channel diameter of 3.3 mm
25 19 3.3 1178 0.231
Tubular ceramic membrane with 37 channels, each with a channel diameter of 2.0 mm
25 37 2.0 1178 0.274
Tubular ceramic membrane with 7 channels, each with a channel diameter of 6.0 mm
30 7 6.0 1200 0.158
Tubular ceramic membrane with 19 channels, each with a channel diameter of 4.0 mm
30 19 4.0 1200 0.286
Tubular ceramic membrane with 37 channels, each with a channel diameter of 3.0 mm
30 37 3.0 1200 0.362
Tubular ceramic membrane with 61 channels, each with a channel diameter of 2.0 mm
30 61 2.0 1200 0.460
 Tubular ceramic membrane with 19 channels, each with a channel diameter of 4.0 mm
30 19 4.0 1200 0.286
Tubular ceramic membrane with 19 channels, each with a channel diameter of 6.0 mm
40 19 6.0 1200 0.430
Tubular ceramic membrane with 37 channels,each with a channel diameter of 4.0 mm
40 37 4.0 1200 0.502
Tubular ceramic membrane with 61 channels and a channel diameter of 2.5
40 61 2.5 1200 0.575
Tubular ceramic membrane with 91 channels, each with a channel diameter of 2.0 mm
40 91 2.0 1200 0.686
Tubular ceramic membrane with 19 channels, each with a channel diameter of 6.0 mm
40 19 6.0 1200 0.430
Tubular ceramic membrane with 37 channels, each with a channel diameter of 4.0 mm
40 37 4.0 1020 0.427
Tubular ceramic membrane with 91 channels, each with a channel diameter of 3.5 mm
50 91 3.5 1200 0.427
Multiple flat ceramic membranes
  • Flat ceramic membrane is an asymmetric flat membrane with a porous structure made from inorganic ceramic materials like Al2O3 through a special process.
  • Common pore sizes are 0.1 μm, 0.2 μm, and 0.5 μm with pure water fluxes of ≥ 450 L.h-1.m-2, ≥ 650 L.h-1.m-2 and ≥ 1000 L.h-1.m-2 respectively.
  • pH range is 2–12, and operating temperature is 0–80 °C.

Specifications

Table 2: Flat Ceramic Membrane Specifications
Dimensions (L × W × T, mm) Membrane Element Weight (kg) Effective Membrane Area (m²)
600 × 145 × 6 0.7 0.174
500 × 250 × 6 1 0.25
1000 × 250 × 8 1.9 0.5
Note: L, W, and T refer to length, width, and thickness respectively, other specifications can be customized.
A high-packed column ceramic membrane
  • The high-packed column ceramic membrane is an inorganic ultrafiltration membrane used for water treatment. Compared to traditional multi-channel tubular ceramic membranes, a single membrane tube of the high-packed column ceramic membrane can have a filtration area of 10–25 m2. It boasts higher packing density and processing capacity, and effectively removing solid suspensions, bacteria, and colloids.
  • The support body is made of inorganic ceramic materials, which are sturdy and durable with a long service life.
  • The single membrane column has a large area, high packing density, high flux, and high water production.
  • Membrane element channels are 2–4 nm, offering stronger resistance to suspended solids (SS) and more effective backwashing.
  • The proprietary flow channel design ensures uniform water distribution and enhanced operational efficiency.
  • It has high mechanical strength, allowing for high-pressure filtration and backwashing.
  • It has low requirements for feed water quality, and can accommodate fluctuations in feed water quality.
  • The membrane layer has a narrow pore size distribution and a multi-layer structure, making it more resistant to fouling and easier to clean.

Installation Dimensions

High-packed column ceramic membrane installation dimensions

High-packed column ceramic membrane installation dimensions

Specifications

Table 3: High-Packed Column Ceramic Membrane Specifications
Membrane Area (m2) 10 12 15 25
Membrane Module Dimensions (L1 L2 D1 mm) 1452 × 1030 × 205 1452 × 1030 × 205 1752 × 1330 × 205 1710 × 1260 × 250
Inlet and Outlet Interface Dimensions
(D2, D3 mm)
60
Working Principle
Filtration principle of tubular ceramic membrane

Tubular ceramic membrane

Tubular Ceramic Membrane

Tubular ceramic membranes often use a 'cross-flow filtration' mode to achieve fluid process separation. The feed liquid flows at a high speed inside the membrane tube. Under pressure, the permeate containing small molecules passes through the membrane layer in the vertical direction, while the concentrate containing large molecular components is retained by the membrane. This process achieves the purposes of fluid separation, purification, and concentration.

Filtration principle of flat ceramic membrane

Flat ceramic membrane

Flat Ceramic Membrane

The flat ceramic membrane adopts an outside-in suction filtration mode. The raw material enters from the membrane surface, and under certain pressure, only water, inorganic salts, and other small soluble molecules are allowed to pass through, while suspending large molecules such as suspended solids, colloids, and microorganisms in the water are retained. After filtration, the water flows through the water collection vertical pipes, and is collected in the horizontal collection pipes at both ends of the membrane, and then is extracted by a suction pump to achieve the purpose of separation.

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