Low Profile Catch Basin Filter With Bypass Weir
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Solution Overview
Problem
Existing catch basins are often too small or shallow to accommodate conventional filters, making them impractical for filtering runoff and wastewater, and they fail to effectively remove hydrocarbons from water.
Innovation Solution
A filter system for catch basins or trench drains that includes a matrix filter and a filtering pouch with a bypass weir, allowing water to flow through either path, ensuring continuous drainage even if the matrix filter clogs, and utilizing an absorbent material in the pouch to capture hydrocarbons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional filter is installed in a catch basin, then filtering capability is provided, but the basin must be large and deep enough to accommodate the filter
Solution Approach 1:
The filter system is nested within the existing catch basin structure. The filter media is contained within a pouch that fits inside the basin, and the entire filter assembly is positioned within the existing basin volume, effectively nesting the filtering function within the existing infrastructure without requiring additional space.
Solution Approach 2:
The filter pouch is configured to hang vertically from the inlet flume down into the basin, utilizing the vertical dimension of the existing basin. This allows the filter to be installed in shallow basins by extending downward rather than requiring horizontal space, effectively using the depth dimension that already exists.
2Ease of manufacture
If a matrix filter is used to filter debris, then physical debris is removed, but the filter may become clogged and stop drainage flow
Solution Approach 1:
The bypass weir acts as an intermediary structure that mediates between the filter and the drainage flow. When the filter becomes clogged, the bypass weir provides an alternative pathway for water to flow around the filter media, ensuring continuous drainage while the filter remains in place to catch debris.
Solution Approach 2:
The filter pouch is designed to be removable and replaceable. When the filter media becomes saturated or clogged beyond effective cleaning, the entire pouch can be discarded and replaced with a new one, restoring full filtering capability without replacing the entire catch basin system.
3Ease of manufacture
If a filter pouch with absorbent material is added to capture hydrocarbons, then hydrocarbon removal is achieved, but the filter structure becomes more complex
Solution Approach 1:
The filtering function and hydrocarbon absorption function are merged into a single integrated pouch structure. The pouch contains both the matrix filter media for physical debris removal and the absorbent material for hydrocarbon capture, combining multiple functions into one component that simplifies installation and maintenance.
Solution Approach 2:
The filter pouch is designed as a multi-functional component that simultaneously performs physical filtration of debris and chemical absorption of hydrocarbons. This universal design allows a single component to address multiple contaminants that would otherwise require separate treatment systems.
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
Enables effective filtration of runoff and wastewater without requiring large or deep basins, effectively removing physical debris and hydrocarbons, and maintaining drainage flow by bypassing the matrix filter when it becomes clogged.
Implementation Method 1
utilizing an absorbent material in the pouch to capture hydrocarbons
Implementation Method 2
A bypass weir helps guide water away from the matrix filter when the matrix filter is clogged
Data Source
AI summary
A catch basin configured to filter water by way of a matrix filter and a filter pouch. If the matrix filter should become clogged, a bypass weir provides means of bypassing the matrix filter to prevent the catch basin from clogging.