Preparation of nitride ceramic membranes.
Phase transformation casting process is a novel ceramic membranes forming technology, which can make asymmetric ceramic membranes with high strength and good flux. This method has been used in our laboratory for many years to make ceramic membranes. By adjusting the experimental conditions (slurry solid content, particle size, sintering temperature, etc.) in the preparation process, the properties of ceramic membrane products can be controlled. Ceramic membranes with different pore sizes can be selected for oil-water mixtures with different particle sizes.
Treatment of oil-bearing wastewater.
Wastewater treatment is a necessary process to protect the environment. The oil in oil-bearing wastewater is emulsified and the oil particles are small. The size of oil particles is analyzed, and then the ceramic membrane material suitable for pore size is selected for separation.
Recovery of oil.
The wastewater after gravity separation still contains about 3-5% oil, which is in the dispersed or emulsified state. Using hydrophobic ceramic membrane, and most of the dispersed oil can be recovered, which can reduce the environmental pollution and increase the oil production.
Purification of water-bearing oil.
A method to improve the energy efficiency of oil purification. Ceramic membrane separation method can separate some water droplets from the water-bearing oil and improve the purity of the oil.
In situ assembly of ceramic membrane modules.
The application of ceramic membrane needs to assemble ceramic membrane into membrane module, because of the characteristics of ceramic, in order to improve the service life, the membrane module can be assembled in situ by improving the molding method.