As we all know, all levels of hospitals, especially some large hospitals, need to handle a large amount of medical waste every day. Such trash includes disposable surgical instruments, various dressing gauze for demolition, various human tissues cut off, discarded experimental equipment, wastes in contact with body fluids or excrement of patients, and other infectious wastes carrying pathogens. These medical wastes should be dealt with as soon as possible in order to avoid transmission of disease and environmental pollution.

At present, there are over 60,000 hospitals that above the county level in China, each is producing an average of about 0.3 tons of medical waste daily. For equipment handling a daily capacity of 2 tons, the total demand is nearly 10,000 units. At the same time, various types of medical research institutes, biological products companies and a large number of small clinics also need to handle a large amount of medical waste.

At present, our country adopts the medical waste treatment method is not ideal and people are also looking for more effective technologies and methods. More than a decade ago, a Canadian hospital imported a microwave medical waste disposal facility from Germany and it price was about $ 1 million.

As for microwave treatment for medical waste, its application development in the world is also in the initial stage, this technology does not produce intermediate pollution or infection and can effectively guarantee the health of sanitation workers.

In foreign, some countries such as Canada and Germany started to use this technology, but the equipment is expensive and there are still some difficulties in promoting the application at present.

In recent years, microwave sterilization and disinfection equipment or garbage disposal equipment have been used in hospitals, laboratories, blood banks, dialysis centers and other places in the United States, Germany, Austria and other countries.

For example, the HG-A250 used in the United States has a processing capacity of 400KG / H, but its investment is huge, which is about 600,000 U.S. dollars for each device, However the handling fee is very low, only 0.05 yuan/ KG. Its characteristics are: good effect, no environmental pollution and high technical level but the investment is big.

In 2005, the United States was commissioned by the World Bank to draft assistance reports for African countries. There were three corresponding manufacturers of microwave processing equipment. They are as follow:

1. The United States: Sanitec, HG-A100, HG-A250, production 250 — 400 kg / h, operating costs 0.03 US dollars / kg, the price is 500000 — 600000 US dollars.
2. Germany: Meteka
3. Austria: Siniton

Due to the high cost and large investment for using these devices, most countries in Africa are unable to import and use them.