Vortex Grit Chamber Eddy Generation for Fine Particle Separation
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Solution Overview
Problem
Existing grit removal systems in wastewater treatment facilities face challenges in efficiently separating fine-sized particles and organic materials, leading to equipment wear, reduced treatment volume, pipe blockages, and increased operating costs.
Innovation Solution
Incorporation of an Eddy generator within the grit chamber using forward or reverse fluid flow eductors to create turbulent zones, enhancing the separation of fine grit particles and organic materials by generating localized high-speed fluid shear zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional grit removal methods (straight run channels, curved channels, centrifugal pumps) are used, then grit removal is achieved, but energy consumption increases and/or device complexity increases
Solution Approach 1:
The vortex grit removal apparatus utilizes the self-service principle by employing a vortex generator that creates rotational flow patterns within the settling chamber, enabling grit removal through the natural vortex action without requiring external mechanical energy input for agitation or pumping. The system serves itself by converting the linear flow energy into rotational kinetic energy that automatically separates grit from wastewater.
Solution Approach 2:
The invention extracts the essential function of grit removal from complex mechanical systems (centrifugal pumps, moving parts) and implements it through a passive vortex generation mechanism. The vortex generator extracts energy from the incoming flow to create the necessary rotational motion for separation, eliminating the need for additional energy-consuming equipment.
2Reliability
If conventional grit removal methods are used, then grit removal is achieved, but the apparatus becomes more complex with moving parts
Solution Approach 1:
The vortex grit removal apparatus eliminates moving parts by using self-service vortex generation. The vortex generator creates rotational flow patterns that automatically perform grit separation without requiring mechanical actuators, motors, or pumps, thereby eliminating wear, maintenance, and failure points associated with moving parts.
Solution Approach 2:
The invention removes (takes out) all moving parts from the grit removal system, replacing mechanical agitation and pumping mechanisms with a passive vortex-based separation process. This extraction of moving parts directly improves reliability while reducing device complexity.
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 apparatus achieves improved efficiency in separating fine grit particles and organic materials, resulting in a grit-less liquid matrix with reduced operational costs and enhanced system reliability.
Implementation Method 1
a vortex generator is provided in the settling chamber to create a vortex flow pattern
Implementation Method 2
separate grit particles from wastewater through centrifugal force
Implementation Method 3
a baffle plate is provided to direct wastewater flow
Implementation Method 4
The grit collection chamber is provided below the vortex generator
Data Source
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AI summary
Apparatus for separating grit from a grit-loaded liquid matrix while retaining organic solids in suspension, including an inlet for admitting liquid matrix into the apparatus, an outlet for removing grit-lite liquid matrix from the apparatus main chamber, and a vortex system for removing separated liquid matrix grit from the apparatus. The grit settling main chamber defines upper and lower subchambers communicating with each other through a central aperture. A fluid flow speed gradient is established between the apparatus fluid inlet and outlet. An Eddy type fluid dynamic component is added, providing combined enhanced coarse grit and fine organics discrimination and separation. The Eddy fluid dynamic component may consist of a trio of stationary fresh water supply force fed eductors. Each eductor produces a fresh water fluid flow interacting with the liquid matrix fluid flow inside the upper subchamber, whereby Eddy-type turbulences are generating promoting fine, liquid matrix grit particle separation from the liquid matrix.