Dual-Membrane Compost Cover Condensing Vapor to Trap Odor
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Solution Overview
Problem
Current composting systems face challenges in simultaneously controlling moisture and odor, with existing covering materials failing to effectively manage water vapor and malodor release, leading to inefficient ventilation and potential contamination.
Innovation Solution
A self-deodorizing composting system featuring a dual-layer membrane structure with an air-proof outer membrane and breathable inner membrane, along with an air-ribbed cage and deodorizing base, which condenses water vapor and absorbs malodor molecules, forming waste water that is treated and discharged, while maintaining high oxygen levels for aerobic degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a breathable but water-proof covering material is used to allow water vapor to exit while blocking rain, then moisture control is improved, but malodor molecules and bacteria can still pass through the material
Solution Approach 1:
The patent divides the single covering material into two separate layers: an inner breathable water-proof membrane for moisture control and an outer air-proof malodor-proof membrane for odor and bacteria containment. This segmentation allows each layer to perform its specific function optimally without compromising the other.
Solution Approach 2:
The patent uses a composite structure combining two different types of membranes with distinct properties. The inner membrane has high air permeability and water-proof characteristics, while the outer membrane has low air permeability and high malodor-proof performance. Together they form a composite covering system that addresses multiple requirements simultaneously.
2Quantity of substance
If high-intensity ventilation is applied to accelerate water loss in the form of water vapor, then moisture control is improved, but a large mass of malodor is distributed with the water vapor
Solution Approach 1:
The inner breathable water-proof membrane acts as an intermediary that allows water vapor to pass through while blocking malodor molecules. This mediator enables the ventilation process to continue efficiently without releasing malodor into the environment.
Solution Approach 2:
The patent converts the harmful effect of malodor being carried by water vapor during ventilation into a benefit by using the water vapor flow itself to carry malodor through the inner membrane's micro-pores, where it is trapped and condensed, thus removing malodor from the atmosphere.
3Object-affected harmful factors
If a flexible air-proof and water-proof covering material is used to prevent malodor spread and rain ingress, then malodor control is improved, but water vapor cannot be discharged and condenses inside the cover to drip back to compost
Solution Approach 1:
The patent segments the covering system into two functional layers: the inner breathable membrane handles water vapor discharge while the outer air-proof membrane handles malodor containment. This eliminates the conflict between moisture control and odor control that plagues single-material covers.
Solution Approach 2:
Different parts of the covering system have different local qualities: the inner membrane has high air permeability for vapor transmission, while the outer membrane has low air permeability for odor containment. Each local region is optimized for its specific function.
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
This system effectively manages moisture and odor by preventing water vapor and rain ingress, allowing efficient water vapor and malodor removal, reducing contamination risks, and enhancing aerobic bio-degradation efficiency, thus improving composting process outcomes.
Implementation Method 1
the inner membrane made of breathable but water-proof fabric... allowing efficient water vapor removal
Implementation Method 2
breathable but water-proof fabric... preventing water vapor and rain ingress
Implementation Method 3
the water vapor is condensed into water in the closed space
Implementation Method 4
the malodor molecules are absorbed and dissolved into the condensed water
Data Source
AI summary
The present invention relates to a self-deodorizing composting system, comprising an outer membrane, an inner membrane, an air-ribbed cage and a deodorizing base, wherein two deodorizing bases are provided; the outer membrane and the inner membrane are held by the air-ribbed cage, with both ends of the outer membrane and the inner membrane respectively fixed to the two deodorizing bases, whereby a closed space is formed between the outer membrane and the inner membrane; the inner side of the inner membrane is used for placing the composting piles, with the malodor and water vapor generated from the composting piles entering into the closed space formed between the outer membrane and the inner membrane through the inner membrane, so that the water vapor is condensed into the water in the closed space, and the malodor molecules are absorbed and dissolved into the condensed water, thus forming the waste water which falls along the inner side of the outer membrane and the outer side of the inner membrane to the bottom of the deodorizing bases and is discharged from the deodorizing base. Comparing with the prior art, the system in the present invention has a simple and detachable structure, and can isolate and remove the malodor and the water vapor generated when the biomass waste is composted.