Self-heating Fermentation Heap for Nutrient-rich Soil Substrates
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Solution Overview
Problem
Existing methods for producing nutrient-rich and water-storing soils or soil substrates are costly and inefficient, particularly when using biomass like fermentation residues from biogas plants or sewage sludge, which require external energy for high-temperature fermentation.
Innovation Solution
A process involving the preparation of a mixture of comminuted pyrogenic carbon and organic biomass, activation of microorganisms with a fermentation activator, and the addition of ceramic powder to achieve self-sustaining fermentation at temperatures over 60°C without external energy, generating heat to create a high-temperature fermentation heap that destroys pathogens and produces a nutrient-rich soil substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If external energy is supplied to maintain fermentation temperature between 30-40°C, then fermentation can be completed within 24 hours, but the process becomes expensive and complex
Solution Approach 1:
The fermentation process utilizes the heat generated by the microorganisms themselves to maintain the required temperature. The exothermic nature of fermentation provides the necessary thermal energy, eliminating the need for external heating systems and making the process self-sustaining.
Solution Approach 2:
The patent converts the typically problematic high temperature (which would be considered a deviation from optimal fermentation conditions) into a beneficial feature. The heat generated during fermentation is not dissipated but retained to maintain the fermentation temperature, turning a potential disadvantage into an advantage.
2Ease of manufacture
If fermentation is carried out at high temperature (>60°C) without external energy, then the process becomes cost-effective and stable, but the fermentation duration extends beyond one day
Solution Approach 1:
The patent changes the temperature parameter from the conventional 30-40°C range to a higher range above 60°C. This parameter change fundamentally alters the fermentation kinetics and thermodynamics, enabling the process to be self-heating and economically viable, despite the extended duration.
Solution Approach 2:
The fermentation process operates at temperatures higher than traditionally considered optimal, using excessive heat generation as a mechanism to drive the reaction forward without external energy input. This partial deviation from conventional wisdom enables energy independence.
3Device complexity
If conventional fermentation methods are used for biomass like fermentation residues or sewage sludge, then the process requires complex external energy systems, but simple and effective alternatives are needed
Solution Approach 1:
The patent extracts and removes the external heating system from the fermentation process. By eliminating this complex component, the system becomes simpler and more reliable, while the inherent exothermic nature of fermentation provides the necessary temperature control.
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 effectively converts difficult-to-dispose biomass into a dark, nutrient-rich soil substrate with high water storage capacity, reducing carbon dioxide in the atmosphere and providing a cost-effective, environmentally friendly solution for soil improvement and waste management.
Implementation Method 1
admixture of microorganisms to carry out fermentation of the biomass
Implementation Method 2
a temperature of more than 60° C. being reached by the fermentation without the supply of external energy
Implementation Method 3
carbon storage in the soil (climate protection)
Data Source
AI summary
The invention relates to a method for producing nutrient-rich, water-storing soils or soil substrates, with steps as follows: (a) producing a mixture of comminuted pyrogenic carbon and readily decomposable organic biomass, and (b) admixing microorganisms to effect fermentation of the biomass. The invention addresses the problem of optimising a method for producing nutrient-rich, water-storing soils or soil substrates so as to enhance the quality of the soils or soil substrates. This problem is solved by the following steps: (c) activating the microorganisms before they are admixed, by adding a fermentation activator; (d) admixing a ceramic powder; (e) carrying out fermentation, with the fermentation attaining a temperature of more than 60°C for a period of more than one day, with no supply of external energy.