Microbial Inactivation by microwave treatment - Bertin medical Waste

Microbial Inactivation by microwave treatment

The microwave technologies for treatment of bio-hazardous medical waste is validated and recommended by the World Health Organisation (WHO) as a safe, efficient and cost-effective treatment method. The Sterilwave by Bertin allows the shredding and sterilization in one single vessel of any type of bio-hazardous waste without prior segregation of the input waste. Without water and rejection of liquid effluent to drain, our innovative technology is pressurless and comply with all international requirements for medical waste management with biological risks.

The Sterilwave solution for disinfecting biomedical waste is based on microwave technology, which is the most eco-friendly method available. This technique allows microbial inactivation of biomedical waste in 30 to 35 minutes.

Unlike autoclaves, this process does not require pressurisation, and this minimises any risk of explosion due to poor maintenance and training of operators. All types of biomedical waste (solids, liquids, glass, sharps, blades, etc.) can be treated with the system, and the entire process is traceable. Besides the rapid and effective decontamination of biohazardous waste to an inactivation level greater than 8log10 (sterilisation level), the Sterilwave also converts biomedical waste into dry, inert material and reduces its weight by more than 25% and its volume by 80%. This resulting material is similar to municipal waste and can also be used as secondary fuel with a high energy output.



8log10 microbial inactivation


No pressure during the process
No irradiation risk


No water consumption
No steam generator
No liquid effluent


Efficient heating rise up to 110°C for 20’
to obtain a full decontamination


Adapted to any type of medical waste (sharps, glass, solid, liquid…)
No segregation


Easy maintenance
Equipment based on mechanical technologies


Microbial inactivation by microwave treatment - Process description

The Sterilwave technology automatically converts infectious waste into municipal waste within its tank and in 30 minutes.


As it uses the microwave technology, Sterilwave is the easiest, most efficient and economical solution to manage medical waste onsite.

Waste management method Waste output Weight reduction Volume reduction Immediate installation
No specific construction required
Zero effluents
No polluting emissions
Dry Stable Sterilized
Autoclave Some models
Chemical treatment Some models

The best alternative to autoclave and incineration solutions – detailed comparison:

Technology Temperature under pressure over 130 °C Require a steam-powered generator Incineration on specific location. Require special carrier (expensive) Based on microwave technology, simple and efficient (heating at 100°-110°C) More efficient than Autoclave technology ( confirmed by OMS)
Pressure / authorization Risk in case of error

Working under pressure (several bars of saturated steam);
Specific authorization to work under pressure;
Require many maintenance tasks;
High risk in case of human error

NC Ambient pressure Safe to operate and maintain Limited Risk in case of Human error
Integrated grinding system Slow shredding <20 mm output size No Yes by rotate blade: 1500 RPM <10mm output size
Disinfection efficiency from 5 log to 8 log10 (depending the brand model) Complete destruction Over 8 log10 more than 6 log 10 for virus
Output Waste after treatment Volume reduction up to 80%;
Wet waste;
Increase of the weight 20% due to water and steam
Complete destruction Ashes Volume reduction up to 80%
Dry Waste
Weight reduction of 25%
Easy to recycle
Operation cost Cost for energy, water, spar parts and consumables Cost for Energy, filters, maintenance Lowest running cost for consumables, energy and maintenance
Environmental impact Medium
Require important volume of water
Liquid effluents
Special carrier of ashes always requested
POPs, Toxins
On-site waste treatment
No effluents
Volume and weight reduction of the treated waste
Only require electricity

Range of products
for Microbial Inactivation by microwave treatment

Biomedical waste management solutions

Sterilwave systems provide on-site treatment of biomedical waste using a simple and safe process. The innovative technology is eco-friendly and has low operating costs.

View the products range


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