Sink Drain Tailpiece Heating for Wastewater Bacteria Suppression
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Solution Overview
Problem
Existing disinfection methods are ineffective in preventing the spread of antibiotic-resistant bacteria, such as CRE, from wastewater plumbing to sink basins in clinical settings, leading to patient infections.
Innovation Solution
A thermal disinfection system that heats the tailpiece of the sink drain to prevent bacteria from moving from the wastewater plumbing to the sink basin, using a heating device that can be easily installed and is energy efficient, with features like fault detection and fail safes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional disinfection methods (hydrogen peroxide vapor, acetic acid, boiling water) are used to eliminate bacteria from plumbing systems, then bacterial reduction is achieved temporarily, but the bacteria reemerge over time requiring continuous aggressive treatment
Solution Approach 1:
The patent changes the temperature parameter of the plumbing system by installing heating elements that maintain elevated temperatures (e.g., 50-70°C) in the tailpiece and trap area. This continuous thermal parameter change prevents bacterial growth and reemergence without requiring complex chemical disinfection systems, resolving the contradiction between reliable long-term bacterial elimination and system complexity
Solution Approach 2:
The heating system operates automatically using temperature sensors and controllers that regulate heating elements based on detected temperature conditions. This self-regulating mechanism eliminates the need for manual intervention or complex external control systems, achieving reliable bacterial prevention while maintaining simple operation
2Reliability
If aggressive disinfection strategies (weekly boiling water treatment, multiple daily sink cleaning) are implemented, then bacterial growth is suppressed, but operational effort and time requirements increase significantly
Solution Approach 1:
The heating system provides continuous thermal disinfection by maintaining elevated temperatures in the plumbing components throughout operation. This continuous action replaces intermittent aggressive treatments (weekly boiling, multiple daily cleanings) with a constant low-level preventive measure, achieving reliable bacterial suppression while dramatically reducing maintenance time and effort
Solution Approach 2:
The system performs preliminary thermal treatment by maintaining warm temperatures in the tailpiece and trap areas before bacteria can establish significant growth. This preventive heating action occurs continuously in the background, eliminating the need for reactive aggressive disinfection interventions and reducing operational time requirements
3Reliability
If heating devices are installed in plumbing systems to maintain disinfection temperatures, then bacterial colonization is prevented, but energy consumption increases
Solution Approach 1:
The heating system applies thermal treatment locally only to specific high-risk components (tailpiece, trap area) where bacterial colonization is most likely to occur, rather than heating the entire plumbing system. This localized approach prevents bacterial colonization while minimizing energy consumption by concentrating heating power only where it is most needed
Solution Approach 2:
The heating system operates periodically rather than continuously at high power, using temperature sensors to activate heating elements only when temperatures drop below the disinfection threshold. This periodic operation maintains reliable bacterial prevention while significantly reducing overall energy consumption compared to continuous high-power heating
4Ease of manufacture
If simple heating devices are used to prevent bacterial spread, then installation ease is improved, but temperature control precision and safety features may be compromised
Solution Approach 1:
The heating system incorporates temperature sensors that continuously monitor temperatures in the plumbing components and provide feedback to control circuits. This feedback mechanism maintains precise temperature control within the disinfection range (50-70°C) while keeping the overall system simple and easy to install, resolving the contradiction between installation simplicity and temperature control precision
Solution Approach 2:
The system uses intermediary components such as thermal coupling elements and heat distribution fins that efficiently transfer heat from the heating elements to the plumbing components. These intermediaries enhance temperature control precision and heat distribution uniformity without adding significant installation complexity, maintaining ease of manufacture while improving measurement and control accuracy
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 reduces the spread of harmful bacteria by maintaining a temperature that inhibits bacterial growth and colonization, providing a long-term solution with minimal effort and cost, while ensuring safety for personnel and patients.
Implementation Method 1
a heating device configured for thermal contact with at least a portion of the liquid-carrying conduit... wherein the heating device is configured to heat a lumen defined by the liquid-carrying conduit along the thermal contact region to a specified temperature
Data Source
AI summary
A thermal disinfection system, and related of method of use and manufacture, is implemented with a liquid-carrying conduit associated with a given plumbing system applicable with a given environment. The thermal disinfection system may include a heating device configured for thermal contact with at least a portion of the liquid-carrying conduit, thereby defining a thermal contact region of the liquid-carrying conduit. Additionally, a thermal insulating layer may disposed on the heating device. The heating device may be configured to heat (or heat and dry) a lumen defined by the liquid-carrying conduit along the thermal contact region (in whole or in part) to a specified temperature to prevent (e.g., suppress) or inhibit (e.g., reduce) microbial activity from advancing through the lumen defined by the liquid-carrying conduit.