Continuous Ozone Medical Waste Sterilization System
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Solution Overview
Problem
Existing ozone-based biomedical waste processing systems have low throughput, leading to prolonged storage of unsterilized waste and increased risk of infection and unpleasant odors in medical facilities.
Innovation Solution
A continuous ozone-based medical waste processing system that includes a shredder, a detachable roll-off treatment bin, and a controller that monitors electrical activity to ensure continuous processing and full sterilization of waste, improving throughput by 50% or more.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If waste is processed in batches with intermediate ozone-dwell stages, then sterilization is achieved, but throughput is reduced and storage time is prolonged
Solution Approach 1:
The system eliminates intermediate dwell stages between shredding and sterilization, creating a continuous flow where waste moves directly from the shredder into the ozone treatment chamber. This continuous operation maintains sterilization effectiveness while significantly improving throughput and reducing storage time.
Solution Approach 2:
The shredder performs preliminary size reduction of waste before it enters the ozone treatment chamber, preparing the material for immediate sterilization without requiring intermediate holding or dwell time. This preliminary action enables seamless transition to the next sterilization stage.
2Reliability
If waste is stored longer awaiting batch processing, then complete sterilization can be achieved, but infection risk and odor problems increase
Solution Approach 1:
By maintaining continuous operation without batch dwell stages, waste spends minimal time in the system from shredding to sterilization completion. This eliminates prolonged storage conditions that would otherwise create infection risks and unpleasant odors while ensuring complete sterilization through uninterrupted ozone treatment.
3Reliability
If traditional batch processing with dwell stages is used, then sterilization is ensured, but energy consumption and processing time increase
Solution Approach 1:
The continuous flow system eliminates the energy-intensive intermediate dwell stages required in batch processing. Waste moves continuously through shredding and ozone treatment without stopping, reducing overall energy consumption while maintaining sterilization assurance through uninterrupted treatment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enables continuous processing of medical waste without intermediate ozone-dwell stages, significantly enhancing throughput and ensuring full sterilization of all waste, reducing storage time and infection risks.
Implementation Method 1
a system and a method for sterilizing waste using ozone gas
Data Source
Figure 1
Figure 2
Figure 3A~3C
AI summary
A biomedical waste treatment assembly (100) including a shredder (120), a roll-off treatment bin (140) with ozone injectors (1621-1623), an ozone source (160), and a controller (150). The controller monitors electric current drawn by the shredder as shredded waste enters the ozone-enriched treatment bin. In response to a low current level, indicating that a batch of waste has been shredded and loaded into the treatment bin, the controller starts a treatment timer (151). The timer measures elapsed ozone treatment or exposure time. If more waste is added to the shredder and another low-current level is detected, the controller restarts the treatment timer. Expiration of the timer indicates that the waste in the bin is sterilized and ready for transport to landfills. The system provides continuous waste processing and promises to boost throughput by 50% over some conventional ozone- based treatment systems.