UV-C Light Array for Aquatic Weed Control
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Solution Overview
Problem
Current methods for controlling aquatic invasive weeds like Eurasian Watermilfoil in lakes and water bodies are costly, labor-intensive, and often ineffective, with chemical treatments posing environmental risks and promoting further infestations due to fragmentation.
Innovation Solution
A UV-C light-based system that uses a planar surface with multiple UV-C light sources at 254 nm wavelength to destroy invasive aquatic plants, minimizing fragmentation and environmental impact, with a method involving exposure times and proximity to ensure effective weed control without chemicals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical treatments are used to control aquatic invasive weeds, then weed control effectiveness is improved, but environmental pollution and harmful effects on aquatic ecosystems worsen
Solution Approach 1:
The patent replaces chemical treatment methods with a physical treatment method using UV-C light irradiation. The UV-C light sources (wavelength 200-280 nm) directly damage the DNA of aquatic invasive weed plants, achieving effective weed control without introducing chemical pollutants into the water ecosystem. This substitution eliminates harmful chemical substances while maintaining control effectiveness.
2Productivity
If mechanical cutting methods are used to remove invasive weeds, then immediate removal is improved, but fragmentation and exponential spread of infestations worsen
Solution Approach 1:
The patent replaces mechanical cutting systems with UV-C light irradiation. Instead of physically cutting plants that fragment into spreadable pieces, the UV-C light (200-280 nm wavelength) penetrates and damages the DNA of entire plants and their fragments, preventing regrowth without creating propagable mechanical debris. This eliminates the fragmentation problem while maintaining treatment productivity.
3Reliability
If UV-C light sources are positioned close to vegetation for effective treatment, then treatment effectiveness is improved, but UV light escape and safety risks worsen
Solution Approach 1:
The patent applies local quality by making the UV-C light treatment zone localized and contained. The light sources are positioned close to vegetation (within 6 inches) for effective treatment, but the water body itself acts as a containment medium. Only the targeted vegetation receives high-intensity UV-C exposure, while the surrounding water and non-target areas are protected from harmful UV escape through proper positioning and timing of 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 UV-C light system effectively kills aquatic invasive plants by damaging their DNA, reducing the risk of fragmentation and environmental contamination, offering a cost-effective, labor-efficient, and environmentally safe solution for controlling aquatic weeds.
Implementation Method 1
The UV-C light system effectively kills aquatic invasive plants by damaging their DNA
Data Source
AI summary
Apparatus for control of vegetation having at least a part within a body of water such as a lake which includes a generally planar surface and a plurality of Ultra Violet Light-C (UV-C) light sources capable of producing UV-C light at substantially a wave length of 254 nm, the sources being disposed on the generally planar surface. The method for control of vegetation includes providing a generally planar surface, providing the plurality of UV-C light sources capable of producing UV-C light at substantially a wave length of 254 nm and positioning the sources on the generally planar surface, and positioning the generally planar member with the UV-C light sources within 12 inches of vegetation to be controlled, and exposing the vegetation to be controlled to the UV-C light sources for a finite period of time.