Molded Activated Carbon Filter for Water Purification
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Solution Overview
Problem
Water purifiers struggle to effectively remove turbidity components in addition to free residual chlorine, trihalomethanes, and mold odors, with molded activated carbon used in previous solutions sometimes experiencing impaired turbidity filterability due to compression.
Innovation Solution
Molded activated carbon is produced using a mixture of powdery activated carbon with specific median particle size and standard deviation, combined with a fibrous binder, which is then processed into a water purifying filter for use in a cartridge-based water purifier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If molded activated carbon is compressed on a workbench to neaten its shape, then shape neatness is improved, but turbidity filterability is impaired
Solution Approach 1:
The invention performs preliminary shaping during the molding process itself rather than requiring post-molding compression. The molded activated carbon is formed with a neat cylindrical shape directly through controlled molding of a slurry mixture, eliminating the need for subsequent compression operations that would compromise turbidity filterability.
2Object-affected harmful factors
If a water purifier is designed to remove harmful substances like free residual chlorine and trihalomethanes, then harmful substance removability is improved, but turbidity removal capability may be insufficient
Solution Approach 1:
The molded activated carbon is designed to perform multiple functions simultaneously: it removes harmful substances (free residual chlorine, trihalomethanes, mold odors) while also effectively filtering turbidity components. This multi-functionality is achieved through optimized particle size distribution and the use of fibrous binder materials that contribute to both adsorption capacity and physical filtration.
3Object-affected harmful factors
If granular activated carbon is used in water purifiers, then harmful substance removal is achieved, but separate turbidity removal systems are required
Solution Approach 1:
The invention merges the functions of harmful substance removal and turbidity filtration into a single integrated molded activated carbon filter element. This eliminates the need for separate turbidity removal systems or multiple filter stages, simplifying the overall water purifier design while maintaining effective performance for both purposes.
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 solution achieves excellent removability for free residual chlorine, volatile organic compounds, and turbidity, reducing the need for separate turbidity removal systems and enabling a compact, efficient water purifier design.
Implementation Method 1
removal of harmful substances contained in drinking water, such as free residual chlorine, trihalomethanes, and mold odors
Implementation Method 2
molding a mixture comprising powdery activated carbon (a) having a median particle size of 80 μm to 120 μm and a standard deviation σg of 1.3 to 1.9 in a particle size distribution and a fibrous binder (b)
Implementation Method 3
excellent turbidity filterability
Data Source
AI summary
The present invention provides molded activated carbon, and the molded activated carbon is produced by molding a mixture containing powdery activated carbon (a) having a median particle size of 80 μm to 120 μm and a standard deviation σg of 1.3 to 1.9 in a particle size distribution and a fibrous binder (b). The molded activated carbon of the present invention has excellent removability for free residual chlorine, volatile organic compounds, CAT, and 2-MIB and excellent turbidity filterability, and is for use as a water purifier cartridge or the like.