Online Drinking Water Contamination Detection Using Indicator Microorganisms
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Solution Overview
Problem
Current methods for detecting biological or chemical attacks on drinking water supplies are slow, often taking days or weeks, and are unable to quickly confirm attacks, leading to delayed warnings and increased health risks due to the dilution and consumption of contaminated water, making rapid online detection crucial for damage mitigation.
Innovation Solution
A device and method that introduce biological indicator microorganisms into the drinking water supply lines, using imaging sensors to detect changes in their vitality and mobility, generating an alarm signal when predefined criteria are met, allowing for rapid detection of potential attacks and assessing the scope of contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional laboratory methods are used to detect pathogens or toxins in drinking water, then detection can be performed with existing equipment and expertise, but detection time extends to days or weeks, making rapid response impossible
Solution Approach 1:
The patent introduces indicator microorganisms into the drinking water supply network in advance before any contamination occurs. These indicator organisms serve as sentinels that will respond predictably to toxins, pathogens, or other contaminants. By having these sensitive indicators already deployed in the water system, the detection system is prepared beforehand to immediately recognize contamination events, eliminating the need for lengthy laboratory analysis after contamination occurs.
Solution Approach 2:
The patent uses indicator microorganisms as intermediary entities between the drinking water and the detection system. Instead of directly analyzing the water for toxins or pathogens (which requires lengthy laboratory work), the indicator organisms act as mediators that interact with contaminants and translate their presence into detectable signals. This intermediary approach converts invisible, difficult-to-detect contaminants into observable biological responses, enabling rapid detection while maintaining reliability.
2Measurement precision
If comprehensive substance-specific analysis is performed to identify specific pathogens or toxins, then accurate identification can be achieved, but detection time exceeds 2 hours, making online monitoring impossible
Solution Approach 1:
The patent creates a simplified copy of the complex detection problem by using indicator organisms that respond to multiple types of contaminants in a unified manner. Instead of developing separate detection methods for each pathogen or toxin (which would be time-consuming and complex), the indicator organisms provide a universal detection mechanism that captures the essence of contamination without requiring specific identification of each substance. This copying approach maintains measurement precision for detecting contamination presence while dramatically reducing detection time.
Solution Approach 2:
The patent changes the detection parameter from direct chemical or biological analysis of water composition to monitoring the biological response of indicator organisms. By shifting the measurement focus to the physiological state of the indicator organisms (such as metabolic activity, cell membrane integrity, or signaling molecule production), the system achieves rapid detection without requiring time-consuming substance-specific analysis. This parameter transformation enables online monitoring while maintaining accurate contamination detection.
3Loss of time
If rapid detection methods are implemented to provide online monitoring, then detection time is reduced to minutes, but the complexity of the monitoring system increases significantly
Solution Approach 1:
The indicator microorganisms perform self-detection and self-signaling functions without requiring complex external monitoring equipment. The organisms naturally respond to contaminants through their own physiological mechanisms, producing detectable signals as part of their normal biological processes. This self-service capability simplifies the overall monitoring system by eliminating the need for sophisticated analytical instruments, while still enabling rapid detection. The complexity is shifted from the detection technology to the biological system itself, which is inherently simpler and more reliable.
4Loss of time
If biological indicator organisms are introduced into drinking water lines for rapid detection, then online monitoring capability is achieved, but the risk of false alarms and contamination of the water supply increases
Solution Approach 1:
The patent applies local quality by introducing indicator organisms at specific, controlled locations within the drinking water supply network rather than throughout the entire system. These localized introduction points allow for precise control over where the indicator organisms are deployed, enabling monitoring at critical nodes without risking widespread contamination. The local placement strategy also facilitates easier containment and management of the indicator organisms, reducing the risk of them becoming uncontrolled contaminants while maintaining detection capability.
Solution Approach 2:
The system incorporates feedback mechanisms that continuously monitor the status and response of indicator organisms, allowing for real-time adjustment of detection thresholds and alarm conditions. By receiving feedback on organism behavior, metabolic activity, and response patterns, the system can distinguish between normal biological variations and actual contamination events, reducing false alarms. The feedback loop also enables dynamic control over indicator organism populations, ensuring they remain contained and do not become uncontrolled contaminants in the water supply.
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
Enables quick and reliable online monitoring of drinking water quality, reducing the risk of delayed detection and health impacts by using sensitive biological organisms to mimic human responses to toxins, thereby facilitating timely warnings and shutdowns of water supply.
Implementation Method 1
for the optical detection of the indicator medium outside the flow medium, a first sensor unit is provided, which is designed as an imaging sensor unit
Data Source
Figure 1~2
AI summary
The invention provides a device and a method for the online control of drinking water on human tolerance within a drinking water supply network, comprising at least one drinking water feed point, to which a plurality of lines carrying drinking water are directly or indirectly connected, which lead to local drinking water consumer points. The invention is characterized in that at least one drinking water line section (2) through which drinking water flows is provided within the drinking water supply network, wherein along said section at least one flow volume is provided, which is limited on one side by a semi-permeable limiting means (4) in at least the flow direction, wherein at least one indicator medium (6) having a biological microorganism can be introduced into said volume, wherein the medium be localized by the limiting means (4) within the through flow volume, i.e. is held back by the limiting means (4) within the flow volume against the flow direction, in that a first sensor unit (7, 8) is provided outside of the flow medium for the optical detection of the indicator medium (6), and that an evaluation unit (9) is provided, which is in communication with the sensor unit (7, 8) and in which sensor signals generated by the sensor unit (7, 8) can be analyzed based on at least one evaluation regulation, and which generates a signal if a predefinable decision criterion occurs.