UV Reactor Lining for Algae Treatment Efficiency
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Solution Overview
Problem
Current methods for treating harmful algal blooms and detoxifying liquid and solid materials with toxic organic compounds in water bodies are not robust or effective enough, as they often rely on UV light, sonication, and ozone, which may not fully address the contamination issues.
Innovation Solution
A novel flotation apparatus featuring a UV reactor on a floating body with a filter screen and propeller to mix the liquid medium, combined with a UV-reflecting material lining to enhance UV radiation exposure and efficiency, specifically using PTFE, e-PTFE, sputtered aluminum, or aluminum foil to reflect UV radiation towards the liquid medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UV light, sonication, and ozone are used to treat harmful algal blooms, then some treatment effect is achieved, but the treatment is not robust or effective enough
Solution Approach 1:
The patent combines multiple treatment methods (UV irradiation, microbubbles, ultrasonic sound) into a single integrated apparatus, allowing simultaneous or sequential application of different treatment mechanisms to achieve both robustness and effectiveness in treating harmful algal blooms
Solution Approach 2:
The apparatus uses composite treatment approaches by integrating different physical and chemical treatment modalities (UV-C radiation, ozone generation, ultrasonic vibration, microbubble aeration) into one system, creating a composite treatment effect that overcomes the limitations of individual methods
2Reliability
If a filter screen is added upstream of the UV reactor, then the UV reactor is protected, but the device complexity increases
Solution Approach 1:
The filter screen is positioned upstream of the UV reactor to perform preliminary filtration of the liquid medium before it enters the UV treatment chamber, preventing debris and large particles from damaging the UV lamps or interfering with the treatment process
Solution Approach 2:
The filter screen acts as an intermediary component between the incoming liquid medium and the UV reactor, removing potential harmful elements before the liquid reaches the sensitive UV treatment system
3Productivity
If a propeller is disposed between the filter screen and the UV reactor to cause mixing, then the treatment efficiency is improved, but the device complexity increases
Solution Approach 1:
The propeller introduces dynamic mixing action in the liquid medium upstream of the UV reactor, creating turbulence and enhancing contact between the liquid and UV radiation, thereby improving treatment efficiency through dynamic fluid motion
Solution Approach 2:
The propeller creates mechanical vibration and turbulence in the liquid medium, which enhances the effectiveness of UV irradiation by preventing shadowing effects and ensuring uniform exposure of algal cells to UV radiation
4Illumination intensity
If the UV reactor is lined with UV-reflecting material, then the UV radiation exposure is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The UV reactor is lined with materials having high UV reflectivity (such as aluminum foil or white paint), which reflects UV radiation back into the liquid medium, enhancing the illumination intensity and treatment effectiveness without requiring more powerful UV lamps
Solution Approach 2:
The UV-reflecting lining can be implemented using inexpensive materials such as aluminum foil or standard white paint, which are easy to apply and replace if needed, minimizing manufacturing costs and complexity
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 solution significantly improves the efficiency and effectiveness of treating harmful algal blooms and detoxifying water by ensuring thorough UV exposure, achieving a 3-fold improvement in reflectivity and effective suppression of harmful organisms like cyanobacteria, with a treatment dose of 20 mJ/cm2 leading to 3-day growth suppression.
Implementation Method 1
one or more UV lamps connected to the flotation body to be submerged in the liquid medium from the flotation body
Implementation Method 2
Lining the UV reactor with a UV-reflecting material to reflect UV radiation from the UV-C emitter toward the liquid medium improves the efficiency and effectiveness of the UV reactor in treating the liquid medium
Implementation Method 3
A filter screen upstream of the UV reactor protects the UV reactor
Implementation Method 4
A propeller disposed between the filter screen and the UV reactor causes mixing of the liquid medium upstream of the UV reactor before it is exposed to the UV-C radiation
Data Source
AI summary
In one embodiment, a flotation apparatus for treating a liquid medium includes a flotation body; one or more UV lamps connected to the flotation body to be submerged in the liquid medium from the flotation body; and a filter screen connected to the flotation body to be submerged in the liquid medium upstream of the one or more UV lamps. The filter screen extends downward below a surface of the liquid medium to a lowest level which is disposed at or below a lowest level of the one or more UV lamps.