Grave Stabilization via CaO Injection
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Solution Overview
Problem
Existing methods for decomposing buried bodies wrapped in plastic or preserved in clay-rich soil are difficult to control, dependent on water content, and unethical when mechanical mixing is involved, leading to uncontrolled decomposition and preservation of graves, which hinders reuse and health safety.
Innovation Solution
A method involving drilling boreholes into the grave, injecting CaO mixed with air and pressurized water to create heat, ensuring intimate mixing and providing oxygen for decomposition, with adjustments based on humidity measurements to optimize the reaction and ensure complete conversion of CaO to Ca(OH)2, and allowing stabilization before opening the grave.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If quicklime is injected into the grave to accelerate decomposition, then the decomposition process is accelerated, but the process becomes difficult to control and results vary with water content
Solution Approach 1:
The patent applies preliminary action by pre-mixing quicklime with air in a controlled ratio (1:5 to 1:10) before injection. This pre-mixing ensures that when the quicklime contacts water in the grave, the air already present facilitates immediate and uniform reaction throughout the decomposition zone, making the process controllable and consistent regardless of variations in grave water content
Solution Approach 2:
The patent changes the physical state and composition parameters by injecting quicklime as a pre-mixed aerosol or suspension with air rather than as dry powder. This parameter change ensures uniform distribution and reaction, making the decomposition process reliable and controllable while maintaining high productivity
2Productivity
If mechanical mixing is used to decompose adipocerous graves, then decomposition is achieved, but the method is considered unethical by authorities
Solution Approach 1:
The patent replaces the mechanical mixing system (drill bit with knives) with a chemical reaction system. Quicklime mixed with air is injected into the grave, and the exothermic reaction between quicklime and water naturally creates mixing and heat (up to 100°C) that accelerates decomposition of adipocere without mechanical cutting, thus maintaining ethical standards while achieving effective decomposition
Solution Approach 2:
The patent utilizes phase transitions through the exothermic chemical reaction of quicklime with water, generating heat that melts and facilitates decomposition of adipocere. The temperature rise from the chemical reaction replaces the need for mechanical disruption, achieving decomposition through thermal and chemical processes rather than mechanical force
3Object-affected harmful factors
If plastic wrapping is used to prevent smell and leakage, then smell and leakage are prevented, but natural decomposition and composting are blocked
Solution Approach 1:
The patent applies the taking out principle by removing the plastic wrapping barrier that prevents decomposition. The method involves injecting quicklime mixed with air through boreholes into the grave, penetrating the plastic wrapping and initiating chemical reactions that accelerate decomposition despite the presence of plastic, effectively extracting or bypassing the barrier to restore decomposition processes
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 accelerates the decomposition process, ensuring safe and controlled environmental stabilization of graves, allowing for proper reuse and reducing health and safety concerns by achieving temperatures above 100°C for adipocere degradation.
Implementation Method 1
allowing the reaction between CaO and water to develop heat
Implementation Method 2
CaO mixed with air and pressurized water, are injected simultaneously. Introduction of quicklime mixed with air at the same time as water is injected, ensures an intimate mixing between water and quicklime
Implementation Method 3
Injection of air together with the quicklime will have a function in mixing water and quicklime efficiently, and to be a first oxygen source for the further degradation in the grave after the treatment
Implementation Method 4
During the reaction between quicklime and water, the temperature in the grave may raise to above 100 °C. The soft tissue will then be dissolved and be made available for natural decomposition
Data Source
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AI summary
A method for environmental stabilization of graves, is described, where the natural degradation have not occurred, is described. The method comprises the following steps: • drilling a plurality of bore holes into the grave, • injection of CaO into the grave through a plurality of bore holes, and • allowing the reaction between CaO and water to develop heat, wherein CaO mixed with air and pressurized water, are injected simultaneously.