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06:37
Continuous Hydrologic and Water Quality Monitoring of Vernal Ponds
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Development of Miniaturized Water Quality Monitoring System Using Wireless Communication
Hsing-Cheng Yu1, Ming-Yang Tsai2, Yuan-Chih Tsai2
1Department of Systems Engineering and Naval Architecture, National Taiwan Ocean University, 2 Pei-Ning Road, Keelung 20224, Taiwan. hcyu@ntou.edu.tw.
Sensors (Basel, Switzerland)
|September 5, 2019
Summary
This study presents a low-cost, miniaturized water quality monitoring system (WQMS) for continuous environmental surveillance. The system integrates sensors for temperature, pH, electrical conductivity, and copper ions with wireless communication, enabling real-time data transmission for pollution control.
Area of Science:
- Environmental Science
- Sensor Technology
- Water Quality Monitoring
Background:
- Industrial waste poses a significant threat to environmental and water quality due to toxic materials.
- Effective water quality monitoring is crucial for mitigating pollution risks.
- Existing systems often lack multifunctionality, continuous monitoring, and wireless communication capabilities.
Purpose of the Study:
- To develop a multifunctional, miniaturized water quality monitoring system (WQMS).
- To integrate sensors for simultaneous measurement of temperature, pH, electrical conductivity, and copper ion concentration.
- To incorporate wireless communication for long-range data transmission.
Main Methods:
- Fabrication of electrodes integrated with polydimethylsiloxane flow channels as compound sensors.
- Integration of sensors, LoRa (Long Range) shield for wireless communication, and circuitry into a WQMS.
- Concurrent measurement of temperature, pH, electrical conductivity, and copper ion concentration.
- Validation of the WQMS against standard instruments over multiple locations.
Main Results:
- The developed compound sensor demonstrated sensitivities for temperature (0.0193 °C/mV), pH (-0.0642 pH/mV), electrical conductivity (1.1008-1.1975 mS/V·cm), and copper ion concentration (0.0111 ppm/mV).
- The integrated WQMS provided continuous monitoring with low cost, small size, and easy maintenance.
- Observed errors in electrical conductivity, pH, temperature, and copper ion concentration were within acceptable ranges across different locations.
Conclusions:
- The developed multifunctional miniaturized WQMS offers a cost-effective and efficient solution for continuous, long-term water quality monitoring.
- The system's integration of sensing and wireless communication capabilities addresses the need for advanced environmental surveillance.
- This technology supports evidence-based water quality management and pollution control efforts.
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