Solid Water Treatment Composition Dissolution Control
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Solution Overview
Problem
Existing solid water treatment compositions with halogen-containing sources, such as trichlor, exhibit rapid dissolution and increased chlorine off-gassing when combined with boron and polyphosphate additives, leading to frequent application needs and chemical instability.
Innovation Solution
A process involving dry blending a halogen-containing source with a boron-containing source and a polyphosphate-containing source, followed by granulation and tableting, to create a solid water treatment composition that maintains a dissolution rate similar to trichlor alone while reducing chlorine off-gassing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If boron source material is combined with trichlor to provide algistatic properties and lower cost, then the composition has enhanced functionality and reduced cost, but the composition dissolves at a faster rate requiring more frequent application
Solution Approach 1:
A dissolution control aid is introduced as an intermediary substance that moderates the interaction between boron source material and trichlor. This aid controls the dissolution rate of the composition while maintaining the algistatic properties provided by the boron source, thus resolving the contradiction between enhanced functionality and excessive dissolution rate.
2Adaptability or versatility
If boron source material is added to trichlor formulation, then algistatic properties are provided, but chlorine off-gassing is promoted
Solution Approach 1:
The dissolution control aid acts as a mediator that reduces chlorine off-gassing while allowing the boron source material to provide its algistatic function. This intermediary substance modifies the chemical environment to suppress harmful chlorine volatilization.
Solution Approach 2:
The formulation converts the potentially harmful chlorine off-gassing into a beneficial controlled release mechanism. The dissolution control aid transforms the harmful rapid chlorine release into a controlled, reduced off-gassing profile while maintaining treatment effectiveness.
3Productivity
If dissolution aids are added to increase dissolution speed, then the composition dissolves faster, but the composition becomes more chemically unstable and gives off more chlorine gas
Solution Approach 1:
Instead of adding substances to increase dissolution speed, the invention inverts the approach by adding a dissolution control aid that deliberately slows dissolution. This inverted strategy maintains chemical stability and reduces chlorine off-gassing while still providing effective water treatment through controlled release.
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 resulting composition has a longer lifespan with reduced chlorine off-gassing, minimizing chemical instability and odor issues, and avoids frequent application requirements.
Implementation Method 1
When any of these materials interact with water, they undergo hydrolysis to form free chlorine consisting predominantly of hypochlorous acid (HOCl), which is the sanitizing agent, and hypochlorite ion.
Implementation Method 2
The resulting composition has a longer lifespan with reduced chlorine off-gassing, minimizing chemical instability and odor issues, and avoids frequent application requirements.
Data Source
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AI summary
Solid water treatment compositions are provided comprising (a) a halogen- containing source; (b) a boron-containing source; and (c) a polyphosphate-containing source. Methods for their use are also provided.