Coconut-Based Compostable Dog Waste Collection System
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Solution Overview
Problem
Existing dog waste collection systems are not fully biodegradable and compostable, may harm wildlife due to non-recyclable materials, and require cleaning or assembly, which can be inconvenient for urban pet owners and those with limited mobility or space.
Innovation Solution
A biodegradable and compostable dog waste collection system using a coconut-based design with two layers: a lower absorbent layer and an upper retaining layer, including a biodegradable receptacle, leak-proof liner, absorbent coconut layer, and coconut fiber mat, which is disposable and requires no cleaning or assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plastic netting system is used to retain litter material, then the litter is protected from the dog and cannot be kicked out, but the netting system is not recyclable or compostable and may harm wildlife
Solution Approach 1:
The patent replaces permanent plastic netting with a biodegradable mesh that can be composted after use. The biodegradable mesh serves its function of retaining litter material during the product's useful life, then naturally decomposes at the end of its service cycle, converting from a persistent pollutant into a temporary functional component that returns to the environment harmlessly.
Solution Approach 2:
The patent employs a composite structure combining biodegradable mesh with recyclable or compostable litter materials. This composite approach allows the system to achieve effective litter retention while ensuring that all components can be properly disposed of through recycling or composting, eliminating wildlife harm associated with traditional plastic netting.
2Ease of operation
If a disposable system is used, then cleaning and assembly are simplified, but the system requires frequent replacement
Solution Approach 1:
The patent implements a fully disposable design where the entire waste collection system including receptacle, liner, and absorbent materials can be discarded as a single unit after use. This eliminates cleaning requirements and assembly complexity, with the trade-off being frequent replacement. The system is designed to be inexpensive enough that frequent disposal is economically acceptable, prioritizing user convenience and hygiene over long-term durability.
3Reliability
If living grass or sod is used in a portable pet toilet system, then the system is fully disposable, but the system requires removing solids and cannot be used in bad weather or for dogs with limited mobility
Solution Approach 1:
The patent extracts the liquid waste management function from the solid waste, using a biodegradable leak-proof liner to contain and manage liquids separately. This allows the absorbent coconut materials to focus on liquid absorption and odor control, while solids can be easily removed or disposed of with the entire unit, improving both portability and usability for dogs with limited mobility.
Solution Approach 2:
The patent changes the physical state and properties of the absorbent materials from living organic matter (grass/sod) to processed coconut products (coconut fiber, coconut coir, coconut soil). These processed materials maintain the disposability advantage while improving portability, weather resistance, and ease of use for dogs with limited mobility, as they are more stable and less prone to degradation in various weather conditions.
4Object-affected harmful factors
If coconut-based materials are used, then the system is fully biodegradable and compostable, but the materials may have limited absorbency compared to synthetic materials
Solution Approach 1:
The patent creates a composite absorbent system combining multiple coconut-based materials including coconut fiber, coconut coir, and coconut soil. Each material contributes different absorbent properties, and their combination achieves sufficient liquid absorption capacity while maintaining full biodegradability and compostability. The composite structure leverages the complementary strengths of different coconut products to overcome the limitations of individual materials.
Solution Approach 2:
The patent applies different coconut-based materials to different layers or zones of the waste collection system based on their specific absorbent properties. For example, more highly absorbent materials like coconut coir may be placed in areas requiring maximum liquid uptake, while other coconut materials are used in areas requiring structural support or odor control, optimizing both environmental friendliness and functional performance.
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 is fully disposable, reduces the risk of bugs entering homes, is sustainable, and can be replaced frequently, offering a convenient and environmentally friendly solution for dog waste management in urban settings and for training dogs, while being safe for wildlife.
Implementation Method 1
The underlying absorbent layer is covered by the retaining layer, which is porous, and allows liquids to pass though.
Data Source
AI summary
A dog waste collecting system that is fully compostable or biodegradable, and fully sustainable. The system is made of a cardboard box, a biodegradable liner, an optional cardboard cell divider, an absorbent coconut layer and a retaining coconut fiber mat that keeps the absorbent layer in place. The absorbent coconut layer absorbs the dog waste fluids while the coconut fiber mat holds the dog waste solids for removal by the owner. Perforations in the box define a lid that is removed prior to use to expose the mat. The system, after a few weeks of use, can be directly discarded in whole, in the compost.