MDU-3B

Introduction

Microwave disinfection unit for medical waste Model MDU-3B

MDU-3B is an integration system including feeding, shredding, disinfection, discharging, and exhaust dedusting systems.

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180kg/h treatment capacity, or 1800l/h.

It can service well to large scale hospitals, or any other healthcare centers, whose medical waste quantity would be 1.5 tons per day (±10%).

Specifications

Equipment Model No.	MDU-3B
Dimensions (LWH)	7,900mm2,900mm3,300mm
Overall weight	12,000kg
Required space (LWH)	12,0005,0005,600mm
Installed Power	115KW (72KW steam generator included)
Treatment capacity	180kg/h (±10%) (medical waste density average 0.1kg/l~0.15kg/l)
Operation and control	PLC control, automatic process
Shredding system	Double-shaft shredder, automatic reverse system is configured to avoid material blockage.
Feeding form	Automatic lifting and charging system contained
Disinfection temperature	≥95℃
Disinfection duration	≥45min
Disinfection effect	≥6 log10The treatment effect test uses Bacillus subtilis var. niger spore (ATCC 9372) as biological indicator, with killing logarithm value ≥ 6.00.
Microwave frequency	2450+/-50MHz
Microwave generator power	1.25KW * 8unit
Manpower	No specialized operator / ONE

Process

The infectious material is temporarily held in a waste container(s) which in turn, are emptied into an pre storage hopper via a charging system which is located at the front of the MDU, The infectious waste is fed to the shredding system by a feed arm where it is shredded. The shredded material is conveyed through a microwave section and temperature holding section, respectively for disinfection, with microwave of 2450MHz (±50MHz), temperature ≥95℃, with over 45 minutes. The disinfected and unrecognizable (sharps) waste is then discharged into large waste containers (or compaction units) by the discharging screw conveyor. From there the material can be transported to a local municipal landfill for disposal or to a refuse recycling plant.

What did the Microwave Disinfection Unit (MDU) do to bacterias?

How is the Microwave Disinfection Unit (MDU) disinfecting by microwave?

Microwave disinfection is the result of microwave thermal effect and biological effect, which can make microwave energy and bacteria directly interact, rapid sterilization.

The thermal effect of microwave energy: Under certain intensity microwave field, the bacteria will be due to the absorption of polarized molecules can increase the temperature of microwave, so that the protein deformation, loss of biological activity. The thermal effect of microwave mainly plays the role of rapid temperature sterilization.

Non-thermal effects of microwave energy: High-frequency electric fields change the polarized molecular structure, resulting in the loss of vitality or death of proteins and physiologically active substances in the microbes, and the special effects of conventional physical sterilization in the sterilization

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 Characteristics

MDU series products are designed as an automatic operation system with minimal operator operations, with the following characteristics:

Energy saving

Microwave heating is uniform, no energy loss, high energy, strong penetration into the object, instantaneous penetration into the object, good energy-saving effect, take the model with a daily processing capacity of 5T/d as an example, installed power Only 117 kilowatts.

Efficient energy

The temperature of action is low, and the heat loss is slow: If microwave and ordinary heating produce the same amount of disinfection, the temperature of the object will be significantly lower than that of ordinary heating. The waste after microwave disinfection is non-toxic, without residue, and lightly damaged.

Absolute sterilization and disinfection

Microwave can effectively sterilize all materials on all organisms with no select. It has a broad spectrum of disinfection bacteria and can kill various microorganisms and pathogens.

Spatial convenience

Microwave disinfection requires a small working environment and small area, does not cause high temperature to the surrounding environment, and is clean and hygienic.

Environmental friendly

No acid gas and dioxins and other pollutants are produced.

Equipment Advantages

The equipment has a high degree of automation, and only one person is required to operate a complete set of equipment, saving labor costs.

Low energy consumption, the whole set of equipment only needs electric drive, taking 5t per day as an example, the total installed power is only 117 kilowatts.

The medical waste treatment method is flexible. When there is medical waste to be processed at any time, the equipment can be turned off after the treatment is completed, which minimizes energy loss and personnel wages and saves treatment costs.

There are two types of microwave disinfection equipment: fixed and mobile.

Technical Compare

Compare technologies	LiYing Technology	Autoclave	Autoclave with a shedder	Incinerator
	(Microwave)	(Hot steam)	(Hot steam)	(Incineration)
Continuous process	✓	X	X	X
Integral shredding	✓	X	✓	X
Unrecognisable 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
On-site installable	✓	✓	✓	X
Technology approval by countries all over the world	High	Intermediate	High	Low
Level of sterelization	High	Intermediate	High	High
Odours	Low	High	Intermediate	Intermediate
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
Impacts on the environment	Low	Intermediate	Intermediate	High
Treated waste recyclable	✓	X	X	X
No contaminated rejection (such as water, steam)	✓	X	X	X
Security
No risk related to pressurized vessel	✓	X	X	X
Risk for workforce/personnel health	No risk of toxic contaminants released into the air or the treated waste	Intermediate	Intermediate	High

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