Coolant Mixing for Stable Biogas Fermentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The variability in composition and concentration of waste water-soluble coolants from machining devices makes it difficult to stably produce biogas through fermentation, as microorganisms struggle to adapt to fluctuations in the coolant components and concentrations.
Innovation Solution
A biogas production system that includes storage tanks for separating waste water-soluble coolants by type, concentration measuring units to analyze coolant compositions, a mixing device to blend coolants at calculated ratios, and a fermentation device to generate biogas using microorganisms, ensuring a fermentable mixture is prepared.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If waste water-soluble coolant is fermented directly without preprocessing, then the fermentation process can be simple, but the biogas production is unstable due to fluctuations in coolant concentration and components
Solution Approach 1:
The system performs preliminary actions by separating coolant by type before fermentation and pre-mixing different coolant types in appropriate ratios to create an optimized substrate. This preprocessing ensures that the fermentation process receives a consistent, easily fermentable mixture, thereby stabilizing biogas production without significantly increasing overall system complexity.
Solution Approach 2:
The system changes the concentration parameters of the coolant mixture by combining different types of coolants in specific ratios. This parameter adjustment creates an optimized substrate with consistent concentration and composition that is more easily fermentable, thereby improving biogas production stability while maintaining a relatively simple fermentation process.
2Reliability
If multiple types of waste water-soluble coolant are mixed to improve fermentability, then biogas production stability improves, but the system complexity increases due to separation and mixing requirements
Solution Approach 1:
The system segments the coolant processing into distinct stages: separation by type, concentration measurement, and ratio-based mixing. This segmentation allows each function to be performed efficiently with dedicated equipment, improving biogas production stability through consistent substrate preparation while keeping the overall system structure organized and manageable.
Solution Approach 2:
The mixing device serves multiple functions: it receives different coolant types from separate storage tanks, measures their concentrations, calculates optimal mixing ratios, and produces a unified fermented substrate. This multi-functionality improves biogas production stability through consistent mixture composition while avoiding the need for entirely separate systems for each function, thereby controlling overall system complexity.
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 stabilizes biogas production by adjusting coolant mixtures to be easily fermentable, thereby ensuring consistent biogas generation.
Implementation Method 1
a fermentation device configured to generate the biogas by fermenting the coolant mixture supplied from the mixing device using microorganisms
Data Source
AI summary
A biogas production system is to produce biogas using, as raw materials, waste water-soluble coolants collected from machining devices that perform cutting or grinding. The biogas production system includes a plurality of storage tanks to separate by type and store the waste water-soluble coolants collected from the machining devices; concentration measuring units to measure concentrations of the waste water-soluble coolants in the storage tanks; a mixing device to prepare a coolant mixture containing a plurality of the waste water-soluble coolants by mixing the waste water-soluble coolants in the storage tanks at a ratio calculated based on the concentrations of the waste water-soluble coolants; and a fermentation device to produce the biogas by fermenting the coolant mixture supplied from the mixing device using microorganisms.