Chlorine Dioxide and Halogen Oxidizer Synergy for NTM Control
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Solution Overview
Problem
Regulated water systems, such as spas and hot tubs, pose health risks due to the presence of non-tuberculosis mycobacteria (NTM) like Mycobacterium chelonae and bacterial endotoxins, which can cause pulmonary issues when aerosolized, as existing treatments are ineffective in removing these resistant organisms and their fragments.
Innovation Solution
The use of chlorine dioxide in combination with halogen oxidizers and materials capable of binding hydrophobic substances to kill NTM and physically remove endotoxins from water, eliminating the need for metal co-biocides and providing a synergistic effect for enhanced biocidal efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional biocides such as chlorine are used to treat water, then most microorganisms are killed, but non-tuberculosis mycobacteria remain tolerant and resistant, causing proliferation and disease
Solution Approach 1:
The patent combines chlorine dioxide with halogen oxidizers (chlorine and/or bromine) to create a synergistic biocidal system. This combination provides enhanced efficacy against NTM compared to chlorine alone, while maintaining safety profiles. The merged system attacks the mycolic acid coating from multiple chemical mechanisms, overcoming the resistance that allows NTM to survive traditional chlorine treatment.
Solution Approach 2:
The patent introduces chlorine dioxide as a new chemical parameter in the water treatment system, changing the biocidal approach from conventional chlorine to a combination of chlorine dioxide and halogen oxidizers. This parameter change enables effective control of NTM by targeting their hydrophobic cell membranes with different chemical mechanisms, thereby overcoming their resistance to traditional biocides.
2Reliability
If biocides are used to kill bacteria, then microbial proliferation is controlled, but bacterial cell membrane fragments (endotoxins) are released into water
Solution Approach 1:
The patent converts the harmful effect of biocidal action (cell membrane rupture releasing endotoxins) into a beneficial process by simultaneously adding materials that bind to and remove these endotoxins. The same biocidal agents that kill bacteria also trigger the binding materials to capture the released endotoxins, transforming the harmful byproduct into a controlled removal process.
Solution Approach 2:
The patent introduces binding materials as intermediary substances that mediate between the biocidal agents and the harmful endotoxins. These intermediaries (binding materials) capture the endotoxins released during bacterial cell membrane rupture, preventing them from remaining free in the water system and causing pulmonary issues.
3Reliability
If chlorine is used to sanitize water, then microbial growth is inhibited, but the hydrophobic mycolic acid coating of mycobacteria confers high tolerance and resistance
Solution Approach 1:
The patent merges chlorine dioxide with halogen oxidizers to create a composite biocidal system that overcomes the hydrophobic mycolic acid coating. This combination provides multiple mechanisms of action: chlorine dioxide penetrates the coating more effectively than chlorine alone, while halogen oxidizers contribute additional biocidal activity, together achieving sanitization effectiveness despite the protective coating.
Solution Approach 2:
The patent employs strong oxidants including chlorine dioxide and halogen oxidizers to accelerate the oxidation of the hydrophobic mycolic acid coating. These strong oxidants disrupt the protective barrier more effectively than conventional chlorine, enabling penetration and killing of the mycobacteria while maintaining the sanitization function.
4Productivity
If turbulent water systems are used for recreational purposes, then water circulation and aeration are improved, but aerosols containing NTM and endotoxins are produced, causing pulmonary discomfort
Solution Approach 1:
The patent implements continuous treatment of the water system with the biocidal combination and binding materials, ensuring that aerosols generated during turbulent water use do not contain viable NTM or endotoxins. The continuous action of chlorine dioxide, halogen oxidizers, and binding materials maintains pathogen-free water throughout the system, allowing safe recreational use.
Solution Approach 2:
The patent applies preliminary anti-action by pre-treating the water with chlorine dioxide and halogen oxidizers before aerosol generation occurs. This preliminary biocidal action ensures that when turbulent water creates aerosols, the pathogens are already killed or bound, preventing their inhalation while maintaining the desired water circulation and aeration functions.
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
This approach effectively kills NTM and removes endotoxins from water, reducing the risk of pulmonary diseases by using intermittent chlorine dioxide doses and halogen oxidizers, along with endotoxin-binding materials, thereby addressing the limitations of prior art in managing resistant organisms and aerosolized pathogens.
Implementation Method 1
compositions containing chlorine and/or bromine in combination with chlorine dioxide that are synergistic against non-tuberculosis mycobacteria
Implementation Method 2
synergistic combinations of halogen oxidizers and chlorine dioxide that are efficacious against nontuberculosis mycobacteria
Implementation Method 3
physically removing viable NTM and bacterial fragments onto a surface or surfaces with high affinities for hydrophobic or amphipathic substances
Data Source
AI summary
Compositions containing chlorine and/or bromine in combination with chlorine dioxide are found to be synergistic against non-tuberculosis mycobacterium such as Mycobacteria chelonae.