Disposable Fiber Filter for Tailing Pond Remediation
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Solution Overview
Problem
The surface mining of bitumen and unconventional oil results in the formation of tailing ponds, which are environmentally hazardous due to the long-term suspension of fine clays and other particles, making existing filtering methods ineffective and costly.
Innovation Solution
A system utilizing a fiber filter produced from melted inorganic materials like beach sand, with optional chemical additives, to filter and recycle contaminated waste fluids from tailing ponds, minimizing the need for additional chemicals and promoting a continuous, cost-effective filtering process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If conventional filtering methods (centrifuges, filters, chemically augmented filters) are used to recover recyclable fluids from tailing ponds, then fluid recovery is achieved, but the process becomes high cost, high maintenance, and ineffective due to poor hydraulic permeability of suspended clays
Solution Approach 1:
The patent employs disposable filter cartridges made from inexpensive materials such as polypropylene or polyester that can be easily replaced. These cartridges are designed to be discarded after a single use rather than cleaned and reused, eliminating maintenance costs and avoiding the problem of clay accumulation that plagues conventional filters. The low cost of these disposable cartridges makes the overall process economically viable.
Solution Approach 2:
The invention extracts the filtering function from complex, expensive conventional systems (centrifuges, chemically augmented filters) and implements it through simple, standalone filter cartridges. This extraction allows the use of basic filtration materials that are far cheaper and easier to handle than the complex chemical and mechanical systems previously required.
2Reliability
If chemically augmented filters using flocculants and coagulants are used to filter suspended clays, then filtering effectiveness is improved, but the high cost of chemical additives and contamination issues arise
Solution Approach 1:
The patent accepts that fine clay particles will pass through the filter and be captured in the spent cartridge rather than attempting to chemically treat them. The filter cartridge itself becomes the containment solution, converting the problem of fine particle filtration into a simple physical containment issue that is resolved by disposal rather than chemical treatment.
Solution Approach 2:
By using disposable cartridges, the system eliminates the need for expensive chemical additives like flocculants and coagulants. The cartridges are so inexpensive that their one-time use is more economical than the recurring cost of chemical additives required by conventional filtering methods.
3Reliability
If conventional filters are used to filter contaminated fluid, then fluid filtration is achieved, but the filters have short production life and jam quickly due to poor hydraulic permeability of suspended clays
Solution Approach 1:
The system is designed around the premise that filters do not need long production lives. Instead, inexpensive disposable cartridges are used that can be quickly replaced. This approach is more economical than maintaining expensive filters with long theoretical lifespans, as the low cost of the disposable cartridges makes frequent replacement negligible.
Solution Approach 2:
The filtering system is segmented into individual replaceable cartridges rather than a single large filter unit. This allows affected cartridges to be replaced independently without shutting down the entire system, maintaining continuous operation and effectively extending the operational life of the overall filtering system.
4Reliability
If evaporation techniques are used to treat large volume of contaminated fluid, then fluid treatment is achieved, but the process is ineffective for large volumes and becomes costly
Solution Approach 1:
The patent replaces the thermal/chemical evaporation process with a simple mechanical filtration system. Instead of using energy-intensive evaporation to remove water and concentrate contaminants, the system uses passive or low-pressure mechanical filtration to separate clean fluid from contaminated particles, dramatically reducing energy consumption.
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 system effectively filters and recycles contaminated fluids, reducing the volume and toxicity of tailing ponds, thereby minimizing ecological damage and operational costs associated with traditional filtering methods.
Implementation Method 1
The system can include a filter system which utilizes a fiber filter produced in the fiber manufacturing plant to clean and recycle a contaminated waste fluid
Data Source
AI summary
Various embodiments of the present disclosure can include a system for filtering of contaminated fluid. The system can include a fiber manufacturing plant. The system can include a filter system which utilizes a fiber filter produced in the fiber manufacturing plant to clean and recycle a contaminated fluid.