Rigid Porous Purification Block for Low-Pressure Water Filtration
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Solution Overview
Problem
Conventional water purification systems face challenges in effectively operating at low water pressures, leading to inadequate flow rates and increased pressure drops, particularly in developing countries where water pressure is limited, and struggle with high turbidity and scale formation in equipment.
Innovation Solution
A rigid porous purification block with a porous high-density polymer and a nonwoven fibrous fabric containing active materials like alumina or aluminosilicate particles, which reduces pressure drop and enhances contaminant removal efficiency, allowing for effective water purification at low pressures and minimizing scale formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional carbon purification blocks are used, then contaminant removal is achieved, but pressure drop is high and flow rate is reduced
Solution Approach 1:
The patent employs a porous polymeric structure with controlled pore sizes (0.003-5 microns) that allows water to flow through while capturing contaminants. The porous nature provides large surface area for filtration without creating high pressure drops, resolving the contradiction between contaminant removal efficiency and flow rate.
Solution Approach 2:
The purification media combines polymeric materials with metal oxides (alumina, aluminum, aluminosilicates) to create a composite structure that leverages the mechanical properties of polymers and the contaminant-capturing properties of metal oxides, achieving both high flow rate and effective purification.
2Productivity
If water pressure is increased to improve flow rate, then productivity increases, but energy consumption increases
Solution Approach 1:
The porous polymeric structure with its optimized pore size distribution allows water to pass through with minimal resistance, reducing the need for high pumping pressures and associated energy consumption while maintaining high flow rates.
3Reliability
If particle size of purification media is decreased to increase surface area, then contaminant removal improves, but pressure drop increases
Solution Approach 1:
Instead of using small particles that would clog and increase pressure drop, the patent uses a porous polymeric structure with controlled pore sizes (0.003-5 microns) that provides large surface area for contaminant capture while maintaining open channels for water flow, thus avoiding high pressure drops.
Solution Approach 2:
The patent transitions from particle-based filtration (0D/1D) to a structured porous matrix (3D), creating a three-dimensional network of pores that provides extensive surface area while maintaining dimensional continuity for fluid flow, reducing pressure drop compared to particulate systems.
4Reliability
If mechanical filtration is used to remove pathogens, then purification effectiveness improves, but scale formation increases in equipment
Solution Approach 1:
The composite of polymeric materials with metal oxides (alumina, aluminum, aluminosilicates) provides both mechanical filtration capabilities for pathogen removal and scale-inhibiting properties from the metal oxide components, simultaneously addressing both requirements.
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 enables high-flow rate water purification with low pressure drop, achieving 99.99999% reduction of contaminants and significant scale control, making it suitable for use in low-pressure environments and various appliances.
Implementation Method 1
These materials purify fluids by one or more mechanisms, including size exclusion, physical entrapment, or chemical reaction of the contaminants
Implementation Method 2
These materials purify fluids by one or more mechanisms, including size exclusion, physical entrapment, or chemical reaction of the contaminants
Implementation Method 3
a rigid porous purification block... comprising a porous, high-density polymer
Data Source
AI summary
A fluid purification system, comprising: a first fluid purification media comprising a rigid porous purification block, comprising: a longitudinal first surface; a longitudinal second surface disposed inside the longitudinal first surface; and a porous high density polymer disposed between the longitudinal first surface and the longitudinal second surface; a second fluid purification media, comprising a fibrous, nonwoven fabric disposed adjacent to the first surface of the first fluid purification media, the second surface of the first purification media, or both.