Methanation and Composting for Active Molecule Degradation
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Solution Overview
Problem
Current methods for treating organic waste, particularly treated seeds containing active chemical molecules, are costly, inefficient, and environmentally impactful, with existing technologies failing to effectively degrade or dispose of these substances due to their high concentration and chemical properties.
Innovation Solution
A process involving methanation of organic products at temperatures between 30°C and 60°C for 10 to 80 days, followed by liquid/solid separation and composting of the solid phase to reduce water-insoluble active molecules by at least 70%, resulting in the production of compost that degrades these substances effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If treated seeds are destroyed through cement plant incineration, then all seeds and active ingredients are effectively destroyed, but the treatment cost is very high (€80/ton) and significant CO2 is generated
Solution Approach 1:
The patent changes the fundamental parameters of the treatment process by replacing high-temperature incineration with low-temperature biological processes (methanation at 30-60°C and composting). This transforms the thermal/combustion-based destruction mechanism into a biochemical degradation mechanism, achieving effective destruction of active ingredients while operating at much lower temperatures and producing renewable energy instead of CO2 emissions
Solution Approach 2:
The patent converts the harmful active ingredients in treated seeds into beneficial products. Through methanation and composting, the toxic substances are transformed into biogas (methane) and nutrient-rich compost, turning a waste disposal problem into a resource recovery opportunity that generates energy and fertilizer
2Reliability
If treated seeds are treated by burying in sanitary land, then disposal is achieved, but the cost to the seed company is very high
Solution Approach 1:
The patent employs self-service principles by using naturally occurring microorganisms to perform the degradation work. The methanation process utilizes anaerobic bacteria naturally present in the substrate or easily introduced, and the composting process relies on aerobic microorganisms that naturally colonize the material. This eliminates the need for expensive external disposal services while achieving effective treatment
Solution Approach 2:
The patent changes the disposal approach from deep burial (requiring significant land use and monitoring) to surface-level biological treatment in controlled reactors. This transforms a long-term environmental containment solution into a short-term active treatment process that produces valuable byproducts
3Productivity
If treated seeds are transformed into compost directly, then biological systems can break down plant protection products, but the degradation is never complete due to different physicochemical characteristics of each product
Solution Approach 1:
The patent segments the degradation process into two distinct stages: methanation (anaerobic) followed by composting (aerobic). This segmentation allows each biological system to target specific types of compounds - the anaerobic phase degrades water-soluble active ingredients while the aerobic phase degrades water-insoluble substances, ensuring comprehensive degradation that neither process could achieve alone
Solution Approach 2:
The patent introduces an intermediary step (methanation) between the initial waste material and the final composting process. This intermediary anaerobic digestion phase pre-treats the substrate, breaking down water-soluble compounds and producing a stabilized material that is more amenable to subsequent aerobic degradation, thereby enhancing overall degradation completeness
4Productivity
If organic waste is sorted to extract recyclable fractions, then landfilling and incineration are reduced, but sorting is difficult due to numerous sources and forms of waste
Solution Approach 1:
The patent creates a universal treatment process that can handle multiple types of organic waste from different sources (wastewater, household waste, food processing waste, green waste, and treated seeds) in a single integrated system. The methanation-composting combination serves multiple functions: energy generation, waste stabilization, and comprehensive degradation of diverse contaminants, eliminating the need for complex source-specific sorting infrastructure
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 method achieves greater than 70% degradation of active molecules, providing a cost-effective and environmentally friendly solution for treating and eliminating treated seeds and other organic waste with high concentrations of active chemicals, while ensuring regulatory compliance and traceability.
Implementation Method 1
treatment of the mixture by methanation for 10 to 80 days at a temperature between 30 and 60°C
Implementation Method 2
treatment by composting of the solid phase obtained by liquid/solid separation of the digestate until a substrate is obtained in which the quantity of non-water-soluble active molecules is reduced by at least 70%
Implementation Method 3
liquid/solid separation of the digestate
Data Source
AI summary
The present invention relates to a decontamination treatment process for an organic product containing at least one active molecule chosen from the group consisting of water-soluble molecules and at least one active molecule chosen from the group consisting of non-water-soluble molecules, comprising a succession of methanization of the starting mixture containing the organic product, liquid/solid phase separation and composting of the solid phase.