Microflotation Valve Adjusts Gas Flow for Solubility
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Solution Overview
Problem
Microflotation systems face inefficiencies in energy usage due to the variable solubility of gas in water, which affects microbubble formation and cleaning effectiveness, as existing systems do not account for parameters like temperature, pH, and solids content when adjusting gas flow.
Innovation Solution
A microflotation system with a reactor vessel that measures key water parameters to adjust the gas flow rate through an expansion valve, ensuring a consistent gas supply to the flotation tank, using an electronic controller to compensate for solubility changes and optimize microbubble size for efficient cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the flow rate of dispersion water is increased to supply more gas for cleaning, then the cleaning effectiveness is improved, but the energy consumption increases
Solution Approach 1:
The system dynamically adjusts the flow rate parameter of dispersion water based on measured water quality parameters (temperature, pH, solids content) that affect gas solubility. By changing the flow rate parameter in response to varying water conditions, the system optimizes the balance between cleaning effectiveness and energy consumption, supplying only the necessary amount of gas for each specific wastewater condition.
Solution Approach 2:
The system incorporates sensors that continuously measure water parameters and feed this information back to the control unit. The control unit uses this feedback to automatically adjust the expansion valve flow rate, creating a closed-loop control system that optimizes gas supply based on actual water conditions, thereby improving cleaning effectiveness while minimizing energy waste.
2Reliability
If a fixed expansion valve setting is used to maintain stable operation, then the system reliability is improved, but the adaptability to varying water conditions deteriorates
Solution Approach 1:
The system transitions from a static fixed valve setting to a dynamic adjustable valve system. The expansion valve flow rate is continuously modified based on real-time measurements of water parameters, allowing the system to adapt to varying water conditions while maintaining stable and effective operation through automated control.
Solution Approach 2:
The system changes the flow rate parameter of the expansion valve dynamically in response to measured water conditions. By adjusting this key parameter based on temperature, pH, and solids content measurements, the system achieves both stability through controlled adjustment and adaptability to varying wastewater characteristics.
3Productivity
If more gas is supplied to ensure adequate microbubble formation, then the cleaning performance is improved, but the energy requirement increases
Solution Approach 1:
The system adjusts the gas supply parameter (flow rate through expansion valve) based on measured water conditions that affect gas solubility. By changing this parameter dynamically, the system ensures adequate microbubble formation for effective cleaning while avoiding excessive gas supply that would waste energy, optimizing the balance between cleaning performance and energy consumption.
Solution Approach 2:
Sensors measure water parameters and provide feedback to the control unit, which automatically adjusts the gas supply rate. This closed-loop control ensures that the minimum necessary gas amount is supplied for effective microbubble formation and cleaning performance, preventing energy waste from excessive gas supply while maintaining adequate cleaning effectiveness.
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 approach ensures optimal cleaning performance with minimal energy use by maintaining a consistent gas supply and adjusting for varying water conditions, thereby enhancing the system's energy efficiency and cleaning effectiveness.
Implementation Method 1
a reactor vessel (12) which has a water inlet (14) and is designed to enrich water fed in via the water inlet (14) under increased pressure with a gas
Implementation Method 2
When the dispersion water expands, micro-bubbles form in the flotation tank
Implementation Method 3
micro-bubbles form in the flotation tank, which slowly rise and attach themselves to impurities, transporting them to the surface of the flotation tank
Data Source
Figure 1
AI summary
Microflotation system comprising: • a reactor vessel having a water inlet (14, 16) and configured to enrich water supplied via the water inlet with a gas under increased pressure (12) and to supply the resulting dispersed water at a dispersed water outlet (18); • a flotation tank (22) having a dispersed water inlet (26); • a pressure relief valve assembly (28) connecting the dispersed water outlet (18) to the dispersed water inlet (26); • a measuring device (38) configured to measure at least one parameter of the water supplied via the water inlet (14) on which the solubility of the gas in the water depends; • an adjustment device (24) for adjusting the flow rate of the pressure relief valve assembly (28); and • an electronic control unit (36) connected to the measuring device (38) and the adjustment device and configured to is,to adjust the flow rate depending on at least one parameter measured by the measuring device, wherein • data on the dependence of the solubility of the gas in water on the at least one measured parameter are stored in the electronic control (36) and • the electronic control (36) is designed to adjust the flow rate in such a way that the quantity of gas supplied to the flotation tank via the dispersion water inlet (26) remains unaffected by the measured parameter.