The treatment of oily wastewater is currently a hot issue in environmental protection, with a global extraction of 54 billion cubic meters of oily wastewater in 2020. In order to treat oily wastewater, various adsorption technologies have also been developed, but there are still problems such as the use of a large number of chemical reagents, limited installation space, and low oil droplet separation efficiency. Ceramic membrane is one of the most promising methods for oily wastewater treatment, especially for oil/water (O/W) lotion separation with oil drop size greater than 20um.

Dual metamaterials separate oil and water by altering the wettability of the surface of an object, i.e. altering the attraction (surface tension) between molecules. The dual properties of materials, compared to water molecules, have a greater repulsive force on oil molecules.

On July 31st, the Personnel Administration Department organized the team leader's graduation event and invited the company's director-level to participate in this review. After more than 4 months of training and learning, the trainees completed a total of 27 professional courses.

Passionate Dragon Boat Festival in DSNOn June 25, it's Dragon boat festival. In order to promote traditional culture and create a strong festival atmosphere, on June 23, DSN held a competition themed "Welcome Dragon Boat Festival and happy Zongzi making competition".

In order to further enhance the fire safety awareness of all employees, improve everyone's self-prevention and self-help skills, and prevent fire accidents, our company organized a fire drill on June 19.