Composite Filter-Aid Material for Turbidity Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Filtration technologies face challenges in achieving high permeability and effective turbidity removal due to the trade-off between permeability and adsorption capacity, with existing composite filters being ineffective in maintaining permeability and requiring additional filtration components, leading to increased costs and reduced filtration efficiency.
Innovation Solution
A composite filter-aid material comprising precipitated silica and diatomite, where the adsorbent component is integrated in-situ onto the filtration component, offering a pore size ratio of at least 200 and a Total Pore Area of 10 to 100 m²/g, enhancing both filtration and adsorption capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If porous filtration components (diatomite, perlite, cellulose) are used for particle separation, then filtration efficiency and permeability are improved, but adsorption capacity deteriorates
Solution Approach 1:
The patent combines filtration components (diatomite, perlite, or cellulose) with adsorbent components (activated carbon, silica gel, or alumina) into a single composite filter-aid material. This merging allows the material to simultaneously provide both filtration efficiency through the porous structure and adsorption capacity through the integrated adsorbent, resolving the trade-off between these two functions.
Solution Approach 2:
The invention creates composite filter-aid materials by integrating adsorbent components onto filtration component substrates. The composite structure combines the high permeability and filtration capabilities of porous materials like diatomite with the adsorption properties of materials like activated carbon or silica gel, achieving both functions in a single material system.
2Productivity
If composite filter-aid materials are used to improve adsorption capacity, then turbidity removal is enhanced, but permeability deteriorates
Solution Approach 1:
The patent applies adsorbent components locally onto the surface and within the pore structure of filtration components rather than uniformly throughout. This localized application ensures that adsorption functionality is concentrated where it is most needed for turbidity removal, while the bulk structure maintains its high permeability characteristics.
Solution Approach 2:
The invention utilizes the porous structure of filtration components (diatomite, perlite, cellulose) as the foundation for the composite material. These materials inherently provide high permeability through their intricate pore networks, and the adsorbent components are integrated within this porous framework to add adsorption capacity without blocking the flow paths.
3Adaptability or versatility
If multiple filtration components are combined to achieve both filtration and adsorption, then functional capabilities are improved, but device complexity increases
Solution Approach 1:
The patent merges multiple functional components (filtration and adsorption materials) into a single integrated filter-aid composition that is applied as one layer on the filter element. This merging reduces device complexity by eliminating the need for separate filtration and adsorption stages or multiple layered applications, while maintaining both functional capabilities.
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 composite filter-aid material improves filtration efficiency by maintaining high permeability while effectively reducing turbidity, outperforming simple mixtures and chemically bonded composites by retaining adsorptive and filtration properties, and reducing the need for additional filtration components.
Implementation Method 1
at least one adsorbent component that has been precipitated in-situ on the surface of the at least one filtration component
Implementation Method 2
The filter aid typically has an open porous structure which maintains an open structure in the filter cake, thus ensuring continued permeability of the filter cake
Data Source
Figure 1
Figure 2
AI summary
Filter-aid materials are disclosed herein, as well as processes, systems, and methods using such filter-aid materials for filtering and removing particles and/or constituents from a fluid. Further disclosed herein are filter-aid materials and processes, systems, and methods using such filter-aid materials for filtering and removing particles and/or constituents from a fluid, wherein the filter-aid material comprises at least one composite filter-aid having novel pore size distribution and comprising at least one adsorbent component formed in-situ on at least one filtration component.