MMDU-21P

Introduction

Medical Waste On-site Disposal Unit (MOU series), model MMDU-21P

It’s a device that uses the dual effects of microwave and high-pressure steam to sterilize medical waste.

Treatment capacity appr. 10kg/hr _{(based on an average density of medical waste at 0.1kg/l ~0.15kg/l.)}

Technical Principle

It uses the thermal effect of microwave to heat the high-pressure sterilization chamber to maintain temperature and prevent steam condensation. It is sterilized by the sensitivity of bacteria to temperature. In addition, microwave has a non-thermal effect, Non thermal effect refers to other microbial killing effects besides thermal effect, which is a unique effect of microwave sterilization. After the sterilization chamber reaches 135 ºC or above, it is kept for another 5 minutes to complete the disposal.

Specifications

Dimensions of the main unit body	1550mm*1140 mm*1930mm（+350mm）
Overall weight	850kg
Treatment type	Microwave sterilization technology with post- shredding
Type of process	Semi-automatic process
Type of control	PLC control system, touch screen operation panel
Automatic feeding system	None
Sterilization temperature	≥ 135℃
Pressure	≥ 0.33MPa
Sterilization cycle	≥ 30 minutes
Installed power	8 Kw
Utility Requirements	Electricity: 380V, 50Hz, 3Phase
Treatment capacity *	10 kg/hr (±10%)
Manpower requirements	No specialized operator / 1 operator
Assembly and start-up	1 day assembly
Exhaust gas treatment system	Contain
Sterilization chamber	304 stainless steel
Microwave frequency	2450 +/- 50 MHz
Microwave generator power	1.25kW
Treatment effect	6 log 10. The treatment effect test uses Bacillus subtilis var. niger spore (ATCC 9372) as biological indicator, with killing logarithm value ≥ 6.00.
A printer integrated with the machine that can trace cycle data, such as hospital name/operator name/cycle time/weight/cycle status.

Customized Special specifications accepted.

Process Flow

Feeding:

Put the bags with medical waste into the material box in the disinfection chamber, and after loading through the PLC control panel, the material box automatically resets and seals with the disinfection chamber, and then closes the outer double doors.

Sterilization:

Start disposal through PLC control panel operation, and enter the microwave sterilization stage. After the pressure reaches above 0.33MPa and the temperature reaches above 135 degrees Celsius, keep the sterilization for 5 minutes and then complete the disinfection. The system releases pressure and cools down automatically. After reaching the set temperature and no-pressure state, the outer double door can be opened after being prompted, and the disinfection chamber is automatically moved out.

Shredding:

Take out the material box, pour the sterilized waste into the shredding chamber, and close the chamber flap. At this point, the next cycle of medical waste can be put into the material box of the sterilization chamber, and the outer double doors then closed.

Discharging:

The shredding is started through the PLC control panel, the shredded and unrecognizable waste pieces automatically falls into a new non-infected garbage collector to complete the treatment.

At the same time, the microwave sterilization chamber will carry out the next cycle of sterilization of medical waste simultaneously.

Applicable Range

• Blood and Blood Products
• Dialysis Waste
• Animal Tissues, Body Parts, and Carcasses
• Human Tissues, Body Parts, and Limbs
• Biological and Non-Hazardous Pharmaceutical
• Needles, Syringes, and other Sharps
• Research Waste 
• Laboratory Specimens
• Surgery Waste
• Pathology and Histology Samples
• Aids and Hepatitis Waste
• Isolation Waste
• Cultures and Slides
• Intravenous Bags, Blood Bags, and Associated Tubing
• Animal Bedding
• Packaging Materials
• Gloves, and Gowns Associated with Waste Collection
• Trace Chemotherapy/anti- neo plastic waste

Technical Advantages

Technical Compare

Compare technologies	LiYing Technology	Autoclave	Autoclave with a shedder	Incinerator
	(microwave)	(hot steam)	(hot steam)	(incineration)
Integral shredding	✓	X	✓	X
Unrecognizable waste	✓	X	✓	✓
Volume of waste reduction	✓	X	✓	✓
Mass of waste reduction	✓	X	X	✓
Installation requirements	Low	High	High	High
Complexity of the installation	Low	Intermediate	Intermediate	High
Possibility of installation "in situ"	✓	✓	✓	X
Technology approval and recognition by countries all over the world	High	Intermediate	High	Low
Level of sterilization	High	Intermediate	High	High
Odours	Low	High	Intermediate	Intermediate
Level of noise	Low	Intermediate	Intermediate	High
Treatment of pathological and anatomical waste	✓	X	✓	✓
Cost
ROI	High	Low	Low	Low
Investment costs	Intermediate	Low	Intermediate	High
Operating costs	Low	High	High	High
Maintenance costs	Low	High	High	High
Labour costs	Low	High	High	High
Environment
Impact on the environment	None	Intermediate	Intermediate	High
No contaminated rejection (such as water, steam)	✓	X	X	X
Security
Risk for workforce/personnel health (no risk of toxic contaminants released into the air or the treated waste)	None	Intermediate	Intermediate	High