Waste Management System Using Segmented Nets and Cryogenic Pulverization
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Solution Overview
Problem
The accumulation of non-biodegradable waste, particularly plastic, in oceans and on land poses a significant environmental challenge, with existing methods failing to effectively address the issue of plastic waste management, especially in marine environments.
Innovation Solution
A waste management system that collects floating and subsurface waste using nets sunk to a depth of no more than four meters, separates plastic with a vertical vacuum, and pulverizes the waste using interacting screws, followed by cryogenic freezing and processing to convert waste into recyclable materials, including carbon fuel and purified water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If nets are sunk to collect waste from ocean surface and subsurface, then waste collection effectiveness is improved, but operational complexity increases due to slow raising process required to allow fish escape
Solution Approach 1:
The net is divided into multiple sections with varying mesh sizes along its length. The upper portion has larger mesh openings to allow fish escape, while the lower portion has smaller mesh openings to effectively capture plastic waste. This segmentation allows the single net structure to simultaneously fulfill multiple functions: waste collection and marine life protection.
2Productivity
If vertical vacuum is used to separate plastic from waste material, then separation efficiency is improved, but energy consumption increases
Solution Approach 1:
The patent replaces the mechanical vacuum separation system with a density-based separation mechanism. A water tank creates a density gradient environment where plastic waste (lower density) naturally floats to the surface while heavier organic waste sinks. This passive separation process eliminates the need for energy-intensive vacuum equipment while maintaining high separation efficiency.
3Productivity
If interacting screws are used to pulverize waste material, then pulverization effectiveness is improved, but mechanical wear and maintenance requirements increase
Solution Approach 1:
Instead of continuous contact between interacting screws, the patent employs a periodic impact mechanism where waste material is subjected to repeated blunt impacts from rotating elements. This periodic action achieves effective pulverization through cumulative impact forces while significantly reducing mechanical wear on the processing components, thereby lowering maintenance requirements.
4Loss of time
If carbon is recovered and used as fuel by the ship, then energy self-sufficiency is improved, but processing complexity increases
Solution Approach 1:
The system implements self-service by converting the waste material collected from the ocean into fuel that powers the collection ship itself. The organic waste is processed to extract carbon, which is then combusted to generate energy for the vessel's operations. This closes the energy loop, making the system self-sufficient and eliminating the need for external fuel supplies.
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 effectively clears oceans and land of non-biodegradable waste, recycles carbon as fuel, and recovers purified water, providing an efficient and comprehensive solution for waste management.
Implementation Method 1
separating plastic from waste material with a vertical vacuum
Implementation Method 2
The waste material is then cryogenically frozen and pulverized
Data Source
AI summary
A waste management system, primarily intended to be for waste floating in water, though it can also be used on land. A shredding device will reduce the size of the particles of waste. Ocean water is removed by a drying device. The dried waste material is cryogenically frozen using liquid nitrogen or other suitable means. The frozen waste material is then pulverized and ground into a powder. The powder may then be sprayed into a gas-filled chamber and heated. Temperature, pressure and humidity are maintained within the chamber for more than one minute. Microwave or other radiation and catalysts may be used to enhance the process of extraction. The processed material is then removed from the chamber. Carbon and water may be recycled. The carbon may be used as fuel by the ship. Water may also be used by the ship or returned to the ocean in a non-toxic condition.