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Forecast of Oil Content in Oilfield Wastewater by PLS and CNN Based on UV Transmittance Spectrum and Turbidity
Abstract
Oil content plays an important role in oilfield wastewater treatment. To investigate the forecast of oil content by UV spectrophotometry, samples of oilfield wastewater are collected, and their UV transmittance and turbidity are measured. Partial least squares (PLS) and convolutional neural networks (CNN) based on a dataset of UV transmittance spectra are used for quantitative analysis in this work. The correlation coefficient between the oil content and turbidity of oilfield wastewater is 0.924, which shows a high positive linear correlation between the oil content and turbidity. Turbidity is added to the dataset to investigate its influence on the accuracy of prediction. The results show that the accuracy of models built by transmittance and turbidity is higher than that of models built by transmittance only, which is confirmed for both PLS and CNN. With the same dataset composition, the PLS and CNN models are nearly accurate, but the CNN performs slightly better overall. This work laid the foundation for the prediction of oil content in oilfield wastewater based on UV spectrophotometry and the further implementation of online detection.
Keywords
UV transmittance spectrum,
convolutional neural networks,
oilfield wastewater,
oil content,
turbidity
Supporting agencies: This work was supported by the Youth Innovative Talents Training Plan of General Undergraduate University in Heilongjiang Province (UNPYSCT-2020148), the Open project of MOE Key Laboratory for Enhanced Oil and Gas Recovery (No. NEPU-EOR-2022-06), and the Postdoctoral support project of Heilongjiang Province (LBH-Q21084).
About the Authors
Q. Wang
School of Architecture and Civil Engineering, Northeast Petroleum University, Fazhan Lu Street;
Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention
China
China
Daqing
H. Li
School of Architecture and Civil Engineering, Northeast Petroleum University
China
China
Daqing
H Qi
School of Architecture and Civil Engineering, Northeast Petroleum University;
Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention
China
China
Daqing
H. Zhao
School of Mechanical Science and Engineering, Northeast Petroleum University
China
China
Daqing
H. Li
School of Architecture and Civil Engineering, Northeast Petroleum University
China
China
Daqing
X. Zhang
School of Architecture and Civil Engineering, Northeast Petroleum University
China
China
Daqing
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Review
For citations:
Wang Q., Li H., Qi H., Zhao H., Li H., Zhang X. Forecast of Oil Content in Oilfield Wastewater by PLS and CNN Based on UV Transmittance Spectrum and Turbidity. Zhurnal Prikladnoii Spektroskopii. 2023;90(4):661.
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