pH Control Filter with OH-Generating Particles for RO Water
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Solution Overview
Problem
Reverse osmosis water purification methods often result in purified water with a pH that deviates from the recommended drinking water standard of 6.5 to 8.5, and existing solutions either increase manufacturing costs or fail to effectively adjust pH levels to meet these standards.
Innovation Solution
A pH-controlling filter with a water permeable filter, a filling unit, and control particles, including OH group-generating particles and cation exchange resin, is used to adjust the pH of purified water, ensuring it falls within the recommended range by supplementing OH groups and neutralizing excess cations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If reverse osmosis filtration is used to purify water, then water purification effectiveness is improved, but pH of the purified water deviates from the recommended drinking water standard
Solution Approach 1:
The filter assembly is divided into multiple functional stages: a reverse osmosis filter for purification and a pH control filter for pH adjustment. This segmentation allows each component to perform its specific function optimally, with the RO filter removing contaminants and the pH control filter containing alkaline particles to adjust pH levels independently.
Solution Approach 2:
Alkaline particles (calcium carbonate, magnesium carbonate, or氢氧化镁) are introduced as an intermediary substance in the pH control filter. These particles act as a mediator between the acidic purified water from the RO filter and the desired pH range, gradually neutralizing the water to achieve compliance with drinking water standards.
2Reliability
If additional pH control components are added to the filter, then pH adjustment capability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The pH control filter integrates multiple functions into a single component: filtration of the purified water and pH adjustment using alkaline particles contained within the same filter housing. This merging eliminates the need for separate pH adjustment devices and reduces overall system complexity while maintaining effective pH control.
Solution Approach 2:
The pH control filter utilizes natural alkaline particles (calcium carbonate, magnesium carbonate, or氢氧化镁) that gradually dissolve in the purified water to change the pH parameter. This passive parameter change approach eliminates the need for active pH control mechanisms, valves, or electronic controls, thereby simplifying the device structure.
3Reliability
If pH control particles are added to the filter, then pH adjustment effectiveness is improved, but excessive particle elution occurs during initial use
Solution Approach 1:
The alkaline particles are pre-loaded into the pH control filter during manufacturing, allowing them to be gradually activated as water flows through. This preliminary preparation ensures that the particles are ready to adjust pH levels from the beginning of use without requiring additional activation steps, while the filter structure controls the rate of particle dissolution to prevent excessive elution.
Solution Approach 2:
The pH control filter employs a porous filter structure that allows purified water to pass through while retaining the alkaline particles. The porous structure provides a large surface area for controlled interaction between the water and particles, enabling gradual pH adjustment while preventing excessive particle elution into the drinking water.
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 pH-controlling filter effectively adjusts the pH of purified water to the recommended range from the early stages of use, reducing manufacturing costs and preventing excessive pH adjustments, thereby providing stable and compliant drinking water.
Implementation Method 1
control particles filled in the inner space of the filling unit to adjust a pH of the purified water passing through the inner space of the filling unit and comprising OH group-generating particles configured to supplement the purified water passing through the inner space with OH groups
Implementation Method 2
control particles filled in the inner space of the filling unit to adjust a pH of the purified water passing through the inner space of the filling unit
Implementation Method 3
the reverse osmosis method among the water purification methods is a method of water purification by using the osmosis phenomenon in reverse
Data Source
AI summary
A filter for controlling a pH of purified water is disclosed. The pH-controlling filter according to an aspect of the present disclosure may include a water permeable filter having a hollow formed in a center of a cross-section from one end to the other end; a lower stopper closing a lower end of the water permeable filter, a filling unit inserted into the hollow of the water permeable filter to form an inner space, the filling unit having an inlet through which the purified water passing through the water permeable filter flows into the inner space and an outlet through which the purified water passing through the inner space flows out; and control particles filled in the inner space of the filling unit to adjust a pH of the purified water passing through the inner space of the filling unit and comprising OH group-generating particles configured to supplement the purified water passing through the inner space with OH groups.