Ionization Control for Biofouling in Water Intakes
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Solution Overview
Problem
Existing ionization systems for inhibiting biofouling in fresh water intake systems are inefficient and costly due to variability in water conductivity and electrode performance, leading to inconsistent ion dosing and increased maintenance needs.
Innovation Solution
A method and system that monitors water parameters to control the ionization process in an electrochemical cell, adjusting ion concentration and power output to ensure consistent and adequate ion dosing, using a combination of untreated fresh water and brine water to enhance ionization efficiency and reduce electrode wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number and/or size of electrodes is increased to improve ionization efficiency in fresh raw water, then ion dosing effectiveness is improved, but acquisition costs, operational costs, weight, installation complexity, and maintenance requirements increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting voltage and current parameters based on real-time water conductivity measurements. The system modifies electrical parameters rather than physical electrode parameters to adapt to varying water conditions, resolving the contradiction between maintaining consistent ion dosing and avoiding increased electrode complexity
Solution Approach 2:
The system implements feedback control by continuously monitoring water conductivity and using this information to adjust the ionization process. Sensors detect water parameters and feed this data back to the control system, which then modifies voltage/current output to maintain consistent ion dosing without requiring additional electrodes
2Reliability
If constant current is channeled to ionization electrodes to compensate for water conductivity variations, then ion production is maintained, but energy consumption increases and electrode wear accelerates
Solution Approach 1:
The system transitions from static constant current operation to dynamic variable current operation. The ionization process adapts in real-time based on water conductivity conditions, allowing the system to maintain reliable ion dosing while optimizing energy consumption by adjusting current levels to match actual water treatment needs
Solution Approach 2:
The patent changes the electrical parameters (voltage and current) dynamically based on measured water conductivity. Instead of maintaining constant current, the system adjusts current parameters upward or downward depending on water conditions, reducing energy waste during periods of high conductivity while ensuring adequate ion dosing during low conductivity periods
3Reliability
If higher power is applied to electrochemical cell to increase ion concentration, then biofouling control effectiveness is improved, but electrode wastage increases and operational costs rise
Solution Approach 1:
The system uses feedback control to monitor water conductivity and adjust power output accordingly. By measuring water parameters and responding with appropriate power adjustments, the system achieves effective biofouling control only when necessary, preventing excessive electrode consumption that would result from continuously high power operation
Solution Approach 2:
The patent implements dynamic power adjustment based on real-time water conditions. The power applied to the electrochemical cell varies with water conductivity and biofouling risk levels, ensuring adequate protection effectiveness while minimizing unnecessary electrode material loss during periods when lower power suffices
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 provides effective, efficient, and cost-effective biofouling control by maintaining consistent ion dosing, reducing electrode wastage, and minimizing operational costs while ensuring the quality of treated water.
Implementation Method 1
an electrochemical cell to produce a carrier water stream, controlling an amount of power provided to the cell to ionize the carrier water
Implementation Method 2
channeling a first portion of the untreated fresh water towards a salt tank, wherein a brine stream formed from the first portion of the untreated fresh water is discharged from the salt tank
Data Source
AI summary
A method of managing ionization for biofouling control in a water intake system that includes channeling a supply water stream through an electrochemical cell, monitoring at least one parameter of the supply water stream, determining an ion concentration threshold for the supply water stream based on the at least one parameter, and controlling the electrochemical cell such that ions are discharged into the supply water stream. The electrochemical cell is controlled such that an ion concentration of a treated water stream discharged from the electrochemical cell is greater than the ion concentration threshold.