Biodegradable Dewatering Enclosure to Minimize Sludge Clogging
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Solution Overview
Problem
Commercially available geotextile containers made of non-woven plastic materials for sludge dewatering face issues with clogging due to variability in industrial waste inputs, leading to inefficient dewatering and environmental concerns, as they are not biodegradable and not suitable for long-term disposal or hydrocarbon reclamation.
Innovation Solution
A biodegradable, permeable enclosure comprising layered woven materials derived from renewable sources, with specific tensile strength ratios and opening sizes, designed to minimize clogging and maintain hydraulic integrity during dewatering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If non-woven plastic material is used for geotextile containers, then the container exhibits extended life cycle via strength and longevity, but the material is not biodegradable and causes environmental harm
Solution Approach 1:
The patent changes the material parameter from non-biodegradable plastic to biodegradable natural fiber, transforming the environmental compatibility while maintaining functional performance through controlled degradation parameters
Solution Approach 2:
The patent uses composite construction with multiple layers of biodegradable materials (natural fibers combined with biodegradable polymers) to achieve both structural integrity and environmental compatibility, resolving the contradiction between durability and biodegradability
2Reliability
If non-woven plastic material is used for geotextile containers, then the container maintains hydraulic barrier properties, but the material clogs due to variability in industrial waste inputs
Solution Approach 1:
The patent applies different pore sizes and material properties to different layers of the geotextile container, with inner layers having smaller pores for fine particle retention and outer layers having larger pores for hydraulic flow, preventing clogging while maintaining hydraulic integrity
Solution Approach 2:
The patent incorporates flexible, dynamic pore structures that can adapt to varying waste compositions and flow conditions, allowing the geotextile to maintain its hydraulic barrier function despite variability in industrial waste inputs
3Strength
If non-woven plastic material is used for geotextile containers, then the container provides structural strength, but the material is not suitable for long-term disposal or hydrocarbon reclamation
Solution Approach 1:
The patent changes the material composition parameters to biodegradable natural fibers and biodegradable polymers, enabling the container to be suitable for long-term disposal and hydrocarbon reclamation while maintaining necessary structural strength through optimized material selection
Solution Approach 2:
The patent designs the geotextile container as a disposable, biodegradable system that can be safely disposed of after use, eliminating the need for long-term structural persistence and allowing integration with landfill and hydrocarbon reclamation processes
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 biodegradable enclosure effectively dewatered sludge with higher solids concentration factors and initial dewatering rates, reducing environmental impact and enabling efficient sludge handling and disposal.
Implementation Method 1
a permeable enclosure configured for receiving the sludge material through an inlet. The permeable enclosure comprises layered biodegradable textiles
Implementation Method 2
The first woven material has an apparent opening size (AOS) when measured according to ASTM D4751 of between about 0.5 mm and about 3 mm
Data Source
AI summary
The present disclosure generally relates to a device for dewatering a material. The device comprises a biodegradable, permeable enclosure configured for receiving the material through an inlet. The permeable enclosure comprises layered biodegradable textiles, an inner portion and an outer portion, derived from renewable resources. The inner portion has an apparent opening size between about 0.5 mm and 3 mm. The outer portion has a ratio of the minimum tensile strength in the warp direction to the minimum tensile strength in the weft direction of about 2.5.