Friction Heat Treatment Technology (Non-incineration)

Source: B&R Working Committee

Applicating Company

Zhejiang Weidun Environmental Technology Co., Ltd.

Technology Name

Technical principle

The core of WeiDun friction thermal treatment technology is the thermal decomposition of proteins that constitute living cells. In airtight micro negative pressure sterilization containers, equipped with special alloy blades of the impeller by the impact, friction, the medical waste was fully crushing grinding, friction process of mechanical energy is converted into heat at the same time, guarantee the waste 360°no dead Angle, friction heat evenly pathogenic microorganism in the waste heat effect: the protein degeneration and coagulation, die making of pathogenic microorganism, Realize the disinfection treatment of medical waste.

In the process of disinfection, before the temperature rises to 135℃, it is a process of steam dampness and heat disinfection. With the increasing temperature and complete evaporation of water, it turns into a process of dry heat disinfection with friction heat. When the temperature reaches 150℃, steam is generated after spraying water, which continues to play a role of dampness and heat disinfection. Therefore, friction heat technology can be considered as a kind of disinfection technology with the combined effect of damp heat, dry heat and damp heat. Therefore, Weidun friction heat disposal technology is a new non-incineration medical waste disposal technology that can achieve the mixed sterilization of dry heat and damp heat.

Scope of application

WeiDun friction heat treatment technology project is suitable for on-site harmless disposal of medical waste in various scenarios and medical institutions of various sizes. Such as: Various medical institutions places, infectious diseases hospital and is equipped with the department of infectious diseases hospital and public hospitals, private private hospital, clinic, animal mountainous area prevention and institute of clinical diagnosis, remote mountainous areas and islands, city proper, rural areas, especially concentrated disposal facilities of incompetence and hard to expand capacity of large and medium-sized cities, epidemic prevention and quarantine authorities, customs, and epidemic prevention emergency Plans, public emergencies, etc.

Process flow and description

Promotion prospects

According to statistics, in 2020, China's centralized medical waste disposal capacity was 1.87 million tons/year, and emergency medical waste disposal capacity was 4.45 million tons/year. In 2020, a total of 1.26 million tons of medical waste was actually disposed of, including 1.14 million tons of centralized medical waste and 120,000 tons of emergency medical waste. As shown in Figure 3, medical waste incineration accounted for 640,000 tons, accounting for 50.8% of the total. 390,000 tons of medical waste were treated by high temperature steam disinfection, accounting for 31.0% of the total amount. 70,000 tons of medical waste were disposed of by chemical disinfection, accounting for 5.6% of the total. 30,000 tons of medical waste were treated by microwave disinfection, accounting for 2.4% of the total. Other means of disposal of medical waste 10,000 tons, accounting for 0.8% of the total disposal; Emergency treatment of medical waste was 120,000 tons, accounting for 9.5% of the total. In 2020, the situation of medical waste generation and disposal is serious. After the adoption of emergency disposal facilities, emergency disposal accounts for 9.5% of the total amount of disposal, which is relatively large, indicating that emergency disposal has greatly improved the disposal capacity of medical waste in China. In the context of relevant policy requirements and the impact of COVID-19, Weidun friction thermal disposal technology has broad application prospects. At present, Weidun frictional heat treatment technology for integrated service platform application in the ecological environment transformation of scientific and technological achievements to promote the award-winning technology, selected in 2021 national key ecological environmental protection practical technology, also in the whole domain in zhejiang province "waste-free city" construction of the use of advanced technology, and get the relevant government departments authorized as a demonstration of innovative technology to practical application in hospital. The application evaluation project of Weidun friction heat treatment technology aims to carry out environmental management policy research and application evaluation of friction heat treatment technology of medical waste.