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Inorganic Tubular Membrane
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Product: Views:341Inorganic Tubular Membrane 
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Last updated: 2024-07-13 15:36
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Silicon carbide tubular membrane products

 

 

Silicon carbide ceramic membrane is a high precision microfiltration & ultrafiltration grade membrane separation product made of high purity silicon carbide fine powder through recrystallization sintering technology.

 

It has high flux, high corrosion resistance, easy cleaning, and long service life.

 

At present, the highest filtration precision can reach 20nm. It uses unique design and manufacturing processes to combine inert silicon carbide materials and screened non-ceramic materials to form the inherently strong and durable membrane. This guarantees its long term service and durability in harsh environments.

 

It uses equivalent or lower investment cost compared to organic ultrafiltration membranes to create SIC carbide inorganic ultrafiltration products that are more reliable, easier to operate, and have longer service life, meanwhile, achieve the lowest total life cycle cost in the long time service.

 

Industrial wastewater generally has special characteristics such as strong acidity and alkalinity, containing organic solvents, etc. Traditional organic membranes are usually difficult to adapt to such harsh and complex conditions; Ceramic membranes, due to their material advantages, can operate stably for a long time in these extreme environments.

 

Characteristics of silicon carbide tubular membrane

 

● The silicon carbide membrane is produced by recrystallization process, with a sintering temperature of 2400 ℃. During the sintering process, the sintering neck between the silicon carbide aggregates undergoes a phase transition from solid to gas to solid, with an opening rate of over 45%. The formed filter channel has strong connectivity, coupled with the inherent hydrophilicity of the silicon carbide material (contact angle only 0.3 °), resulting in a pure water flux of up to 3200LMH, and is hydrophilic and oleophobic.

● The isoelectric point of the silicon carbide membrane is around pH 3, and the surface of the membrane can maintain being negatively charged over a wide pH range, improving its pollution resistance.

● Excellent chemical stability, capable of working in extreme environments (pH range 1-14); a variety of cleaning plans can be developed based on the characteristics of pollution factors; Oxidants are fully tolerant, including ozone and hydroxyl radicals.

 

Product Features and Advantages

 

★High flux, 3-10 times compared to organic membranes;

★Small footprint, saving land;

★Water consumption for backwashing is reduced by more than 50%;

★Chemical tolerance, capable of working in pH 0-14 environment, acid and alkali resistant;

★The service life is 2-10 times longer than the organic membranes, lower replacement cost;

★Allow for strict chemical cleaning, high flexibility in cleaning, and the flux is easy to recover after cleaning;

★The performance is easy to recover after pollution and blockage, eliminating the cost of membrane replacement caused by unexpected failures;

★ Low system preprocessing requirements, reducing total system investment and operating costs;

★Higher Pressure differences between membranes allowed, so low temprature source water flux increases;

★No membrane broken problem, and less maintainance required.

 

Application Scenarios

 

Washing and concentration of nano powder

Oil-water separation (oilfield reinjection water, liquid hazardous waste regeneration)

Material separation

Solid liquid separation with high solid content (mine water, biological fermentation broth)

Solid liquid separation in harsh chemical environment (acid purification, nano powder catalyst recovery)

 

Printing and dyeing wastewater and papermaking and pulp industry wastewater are the main sources of COD (chemical oxygen demand) pollution. Compared with traditional treatment methods, using ceramic membrane ultrafiltration technology to intercept and filter COD and lignin has a higher retention rate, and can also achieve direct recovery and reuse of permeate.

 

FAQ

 

Q: What is the structure of JMFILTEC ceramic membranes?

A: Our membrane has an asymmetric microporous structure, divided into two layers: the upper layer is a functional layer, which has dense micropores and the function of intercepting large molecules, with a pore size of around 20nm; The support layer with a large through-hole structure in the lower layer plays a role in increasing the strength of the membrane.

Q: How to characterise UF membrane?

A: The performance is expressed in square meters per hour of pure water permeability, as well as the retention molecular weight and retention percentage. The higher the transmittance of pure water, the better, and the retention rate is generally required to be>99%. High quality ultrafiltration membranes have a high pore density and a narrow pore size distribution.

Q: What is the difference between UF membrane and Ultrafiltration membrane?

A: Reverse osmosis membranes are mainly used in the desalination of brackish water, preparation of pure water, special separation, and other fields, while ultrafiltration membranes are mainly used in sewage treatment, pre-treatment of pure water preparation, and production of drinking water.

 

http://www.jmfiltec.com/

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