Storm Drain Filter Bag with Anti-Backflow Skirt
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Solution Overview
Problem
Storm sewer systems face challenges in capturing and filtering out pollutants from stormwater runoff, leading to environmental damage and clogging of drainage networks, particularly in areas with high traffic or large populations.
Innovation Solution
A storm drain filtering system comprising a funnel, hanger, and filter bag with a mesh or net structure that captures debris and pollutants before they enter the storm sewer system, using a combination of materials like non-woven fabrics and magnetic scavengers to remove solids and dissolved contaminants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a grate is used to capture runoff water, then water collection is improved, but pollution and debris clog the storm sewer system
Solution Approach 1:
A filter bag is introduced as an intermediary component between the grate and the storm sewer system. The filter bag captures pollutants and debris from runoff water while allowing water to pass through, preventing clogging of the storm sewer system while maintaining effective water collection
Solution Approach 2:
The filter bag is made of porous material that allows water to pass through while trapping solid pollutants and debris. The porous structure enables selective filtration based on particle size, capturing harmful substances while maintaining water flow
2Object-affected harmful factors
If filtering components are added to the storm drain system, then pollution capture is improved, but system complexity increases
Solution Approach 1:
The filtering system is segmented into modular components: a grate for water collection, a filter bag for pollution capture, and a support structure. This segmentation allows for easy installation, maintenance, and replacement of individual components without affecting the entire system
Solution Approach 2:
The filter bag is designed to be self-cleaning to the extent that water flow through the porous material helps prevent excessive debris accumulation that would completely block filtration. The system requires minimal external intervention for maintenance
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
Effectively filters out pollutants and sediments, reducing environmental impact and preventing clogging of storm sewer networks by capturing debris and contaminants at the catch basin level, allowing cleaner water to flow into water bodies.
Implementation Method 1
A storm drain filtering system comprising a funnel, hanger, and filter bag with a mesh or net structure that captures debris and pollutants
Implementation Method 2
using a combination of materials like non-woven fabrics and magnetic scavengers to remove solids and dissolved contaminants
Data Source
AI summary
A storm water capture and filtration system may secure in a catch basin or other area subject to flows of water from streets, channels, and the like as a result of run off from storms. A filter system may include a capture portion including attachment mechanisms, a funnel, various supports, and a filter hanger designed and calculated to capture all water entering a storm water inlet and directing it toward a bag filter. A gap is provided between a funnel and filter hanger in order to provide accommodation for overflow, while an anti-backflow skirt on the filter bag resists flushing of captured pollution out of the bag in overflow condition.