At present, the kitchen waste in Liangjiang New District of Chongqing is collected and transported by the unit of Heishizi kitchen waste treatment plant in Jiangbei District of Chongqing. According to the inquiry, it is this processing company. It is understood that due to the rapid economic development, people's living standards are getting better and better, and the catering industry is developing rapidly. With the rapid development of catering industry, the amount of waste oil produced in the process of kitchen use is naturally increasing. These waste oils are huge, and if they are not handled properly, they are huge sources of pollution and should be recycled. However, the recycling of kitchen waste oil is simple to say, but now it seems to be very troublesome to operate. The recovery of kitchen waste oil includes the recovery of hot pot oil, but Chongqing is the capital of hot pot, and a special hot pot collection and transportation line has been opened. In addition to hot pot restaurants, other catering units that produce waste oil also need to sign an Agreement on the Recovery and Treatment of Kitchen Waste Oil with Yu Ying Company, and they can choose to install our patented oil-water separator. All catering units separately pour the waste edible oil separated from the oil-water separator into the special bucket for kitchen waste oil recovery of our company, and it is forbidden to eat it again to prevent it from flowing to the food industry, illegal units or individuals.