The objective of this project is to apply the short-term automated water-quality monitoring on five different streams in Taiwan. In order to evaluate the monitoring Instrument, comparing and analyzing the continuous water-quality monitoring data with manual samplings’ are necessary during the project process. Besides, draft ” The short-term automated water quality monitoring standard operation procedure” based on the project experiences and results. According to project results, it is obvious that the direct emerging and ground pumping systems are not suitable for the continuous water-quality monitoring because of the electrode coating and pumping head problems. The better system should be the emerged pumping system. In the automated monitoring instrument aspect, most countries did not set up or regulate the specific brand and type, and most of the instrument detecting range, resolution, and accuracy for different manufacturers are close to each other. For the water-quality data transmission part, it shows the GPRS wireless transmission is the appropriate method referring to the project result. After the project has been processed, it is clear that pH, specific conductance, temperature, and water level meters’ readings have less differences comparing to manual samplings’. On the contrary, the Turbidity meter is serious affected by the substance within the stream flow thus becomes unstable. As a result, the gap between its data and manual sampling data becomes huge. For the DO property, the DO meter is affected by the speed river flow and has the same condition as the Turbidity meter. Therefore, the comparing results of these two instruments are not so well. Unfortunately, the NH3-N and NO3-N meters are not stable while they are used under continuous water monitoring condition. The comparing results are bad, too. These two meters may not suitable for the project objective. In the future, suggest putting away the testing of electric ion method and using the FIA (Flow Injection Analyzer) to measure and monitor the nutrient subjects in the stream or river.

Automated Water-Quality Monitoring、Accuracy