Study on an Online Detection Method for Ground Water Quality and Instrument Design
The online measurement of ground water quality, as one important area of water resource protection, can provide real-time measured water quality parameters and send out warning information in a timely manner when the water resource is polluted. Based on ultraviolet (UV) spectrophotometry, a remote o...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-05-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/19/9/2153 |
| _version_ | 1811279172183523328 |
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| author | Xiushan Wu Renyuan Tong Yanjie Wang Congli Mei Qing Li |
| author_facet | Xiushan Wu Renyuan Tong Yanjie Wang Congli Mei Qing Li |
| author_sort | Xiushan Wu |
| collection | DOAJ |
| description | The online measurement of ground water quality, as one important area of water resource protection, can provide real-time measured water quality parameters and send out warning information in a timely manner when the water resource is polluted. Based on ultraviolet (UV) spectrophotometry, a remote online measurement method is proposed and used to measure the ground water quality parameters chemical oxygen demand (COD), total organic carbon (TOC), nitrate nitrogen (NO<sub>3</sub>−N), and turbidity (TURB). The principle of UV spectrophotometry and the data processing method are discussed in detail, the correlated mathematical modeling of COD and TOC is given, and a confirmatory experiment is carried out. Turbidity-compensated mathematical modeling is proposed to improve the COD measurement accuracy and a confirmatory experiment is finished with turbidity that ranges from 0 to 100 NTU (Nephelometric Turbidity Unit). The development of a measurement instrument to detect the ground water COD, TOC, NO<sub>3</sub>−N, and TURB is accomplished; the test experiments are completed according to the standard specification of China’s technical requirement for water quality online automatic monitoring of UV, and the absolute measuring errors of COD, TOC, and NO<sub>3</sub>−N are smaller than 5.0%, while that of TURB is smaller than 5.4%, which meets the requirements for the online measurement of ground water quality. |
| first_indexed | 2024-04-13T00:49:50Z |
| format | Article |
| id | doaj.art-6680fdfc919e485faa16e8c0bbae4ef0 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T00:49:50Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-6680fdfc919e485faa16e8c0bbae4ef02022-12-22T03:09:54ZengMDPI AGSensors1424-82202019-05-01199215310.3390/s19092153s19092153Study on an Online Detection Method for Ground Water Quality and Instrument DesignXiushan Wu0Renyuan Tong1Yanjie Wang2Congli Mei3Qing Li4School of Electrical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, ChinaCollege of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, ChinaCollege of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, ChinaSchool of Electrical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, ChinaCollege of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, ChinaThe online measurement of ground water quality, as one important area of water resource protection, can provide real-time measured water quality parameters and send out warning information in a timely manner when the water resource is polluted. Based on ultraviolet (UV) spectrophotometry, a remote online measurement method is proposed and used to measure the ground water quality parameters chemical oxygen demand (COD), total organic carbon (TOC), nitrate nitrogen (NO<sub>3</sub>−N), and turbidity (TURB). The principle of UV spectrophotometry and the data processing method are discussed in detail, the correlated mathematical modeling of COD and TOC is given, and a confirmatory experiment is carried out. Turbidity-compensated mathematical modeling is proposed to improve the COD measurement accuracy and a confirmatory experiment is finished with turbidity that ranges from 0 to 100 NTU (Nephelometric Turbidity Unit). The development of a measurement instrument to detect the ground water COD, TOC, NO<sub>3</sub>−N, and TURB is accomplished; the test experiments are completed according to the standard specification of China’s technical requirement for water quality online automatic monitoring of UV, and the absolute measuring errors of COD, TOC, and NO<sub>3</sub>−N are smaller than 5.0%, while that of TURB is smaller than 5.4%, which meets the requirements for the online measurement of ground water quality.https://www.mdpi.com/1424-8220/19/9/2153ground water qualityspectrophotometryonline detectorCODTOCturbidity |
| spellingShingle | Xiushan Wu Renyuan Tong Yanjie Wang Congli Mei Qing Li Study on an Online Detection Method for Ground Water Quality and Instrument Design Sensors ground water quality spectrophotometry online detector COD TOC turbidity |
| title | Study on an Online Detection Method for Ground Water Quality and Instrument Design |
| title_full | Study on an Online Detection Method for Ground Water Quality and Instrument Design |
| title_fullStr | Study on an Online Detection Method for Ground Water Quality and Instrument Design |
| title_full_unstemmed | Study on an Online Detection Method for Ground Water Quality and Instrument Design |
| title_short | Study on an Online Detection Method for Ground Water Quality and Instrument Design |
| title_sort | study on an online detection method for ground water quality and instrument design |
| topic | ground water quality spectrophotometry online detector COD TOC turbidity |
| url | https://www.mdpi.com/1424-8220/19/9/2153 |
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