Purified Water Remineralization With Adaptive Chemical Dosing Control
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Solution Overview
Problem
The seawater reverse osmosis (SWRO) process produces purified water that requires remineralization to meet regulatory standards, but existing methods lack optimization for continuous monitoring and energy efficiency due to variations in seawater quality and operating conditions.
Innovation Solution
A system and method that utilize a processor to retrieve and analyze liquid stream data, control chemical compound concentrations, and adjust output based on comparison with reference parameters to ensure water quality meets specific thresholds, thereby optimizing remineralization and minimizing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional remineralization methods are used, then water quality can meet regulatory standards, but energy consumption is high and the process lacks optimization for continuous monitoring
Solution Approach 1:
The system continuously monitors water quality parameters (pH, alkalinity, calcium hardness, TDS) and uses this feedback to automatically adjust chemical dosing rates. The processor compares real-time sensor data with target ranges and dynamically controls pump speeds and valve positions to optimize remineralization while minimizing energy consumption and chemical usage.
Solution Approach 2:
The system transitions from static, fixed-dose remineralization to dynamic, adaptive control. Operating parameters such as chemical dosing rates, pump speeds, and valve positions are continuously adjusted based on real-time seawater quality variations and process conditions, allowing the system to respond optimally to changing conditions and minimize energy consumption.
2Reliability
If chemical dosing is increased to ensure water quality standards, then water quality compliance improves, but chemical consumption and cost increase
Solution Approach 1:
Real-time monitoring of water quality parameters provides continuous feedback on the effectiveness of chemical dosing. The system adjusts chemical addition rates based on actual process conditions and water quality measurements, preventing both under-dosing (which would fail to meet standards) and over-dosing (which would waste chemicals).
Solution Approach 2:
The system dynamically adjusts chemical dosing parameters (flow rates, concentrations, injection points) based on real-time process conditions and water quality measurements. This allows optimization of chemical usage by matching dosing rates precisely to the actual remineralization needs of the permeate stream.
3Manufacturing precision
If multiple water quality parameters are monitored, then water quality control improves, but system complexity increases
Solution Approach 1:
The system uses a single integrated control platform that handles multiple water quality parameters (pH, alkalinity, calcium hardness, TDS) simultaneously. The processor coordinates multiple sensors, chemical dosing systems, and actuators through one unified control architecture, reducing operational complexity despite monitoring multiple parameters.
Solution Approach 2:
Multiple monitoring and control functions are merged into an integrated system. The control platform combines data from various sensors, coordinates chemical dosing for multiple parameters, and manages pump/valve operations through a single unified system, simplifying operation and maintenance while maintaining precise control over all water quality parameters.
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 effectively remineralizes purified water to meet quality standards while optimizing chemical dosing and reducing energy consumption by continuously monitoring and adjusting parameters, ensuring the produced water is safe for consumption and non-aggressive to infrastructure.
Implementation Method 1
controlling a concentration of at least a first chemical compound of the set of chemical compounds in the first liquid stream by adding at least the first chemical compound in the first liquid stream
Implementation Method 2
seawater reverse osmosis (SWRO) is being widely used technology to produce freshwater from seawater
Implementation Method 3
The SWRO process takes place in a seawater reverse osmosis (SWRO) plant
Data Source
AI summary
A system and a method for remineralization of purified water retrieves liquid stream data associated with a first liquid stream that includes a set of chemical compounds and a set of parameters. The system controls a concentration of at least a first chemical compound of the set of chemical compounds by adding at least the first chemical compound to the first liquid stream. The system compares at least a first parameter of the set of parameters with a corresponding reference parameter of a set of reference parameters based on the addition of the first chemical compound. The system also controls the output of the first liquid stream based on the comparison.