Coagulant dosage prediction in the water treatment process
Coagulation is an important water treatment step in a water treatment plant (WTP). Jar tests are performed to determine the required dose of coagulant; however, these tests are slow to be performed and do not give a response in real-time to changes in raw water quality that changes abruptly during t...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2023-09-01
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| Series: | Water Supply |
| Subjects: | |
| Online Access: | http://ws.iwaponline.com/content/23/9/3515 |
| Summary: | Coagulation is an important water treatment step in a water treatment plant (WTP). Jar tests are performed to determine the required dose of coagulant; however, these tests are slow to be performed and do not give a response in real-time to changes in raw water quality that changes abruptly during the day. To overcome this limitation, this research developed artificial neural network (ANN) models, using full-scale WTP data that served to calibrate the model and then predict the coagulant dosage, considering raw water as data input, in compliance with the treated water quality parameters. The best model was able to predict the coagulant dosage with a mean squared error of 0.016 and a correlation coefficient equal to 0.872. These results corroborate to promote coagulant dosage automation in WTPs, making it clear that ANN models allow a faster response in dosage definition and reduce the need for human interaction in the process.
HIGHLIGHTS
Artificial neural network models consider water quality parameters of raw water and treated water to predict the best coagulant dosage, considering the operation cost and water quality.;
The water quality parameters ‘pH’ and ‘turbidity’ were the most assertive in the prediction algorithm.;
The parameters ‘residual fluoride’ and ‘residual chlorine’ had the worst performance among all water quality parameters studied.; |
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| ISSN: | 1606-9749 1607-0798 |