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Membrane separation technology is considered as an efficient and energy-saving new type of separation technology, which is an effective means to solve major problems faced by humans such as energy, resources, and environment. According to data, at the beginning of the 21st century, the annual sales volume of membranes and their equipment worldwide exceeded 60 billion US dollars, with an annual growth rate of about 30%. Even experts predict that membrane technology and the integration of membrane technology with other technologies in the 21st century will largely replace traditional separation technologies, achieve energy conservation, consumption reduction, and improve product quality, greatly promote the progress of human science and technology, and promote sustainable social development. The application of membrane technology will involve industries such as chemical industry, petroleum and petrochemicals, biochemistry, food, electronics, medicine, etc. Water purification and water purification equipment developed with membrane technology as the core will penetrate into thousands of households.
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.
● 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.
★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.
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)
Q: What are the advantages of ceramic membrane?
Q: What are the materials used in ceramic membrane?
Q: What is the flux of a ceramic membrane?
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