Chlorinated solvents in a petrochemical wastewater treatment plant: an assessment of their removal using self-organising maps

Chemosphere
Marek TobiszewskiJacek Namieśnik

Abstract

The self-organising map approach was used to assess the efficiency of chlorinated solvent removal from petrochemical wastewater in a refinery wastewater treatment plant. Chlorinated solvents and inorganic anions (11 variables) were determined in 72 wastewater samples, collected from three different purification streams. The classification of variables identified technical solvents, brine from oil desalting and runoff sulphates as pollution sources in the refinery, affecting the quality of wastewater treatment plant influent. The classification of samples revealed the formation of five clusters: the first three clusters contained samples collected from the drainage water, process water and oiled rainwater treatment streams. The fourth cluster consisted mainly of samples collected after biological treatment, and the fifth one of samples collected after an unusual event. SOM analysis showed that the biological treatment step significantly reduced concentrations of chlorinated solvents in wastewater.

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Citations

Feb 6, 2014·The Science of the Total Environment·Ewa OlkowskaZaneta Polkowska
Aug 26, 2016·Environmental Science and Pollution Research International·Ali BehnamiEsmaeil Fatehifar
Jun 21, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Galina YotovaStefan Tsakovski
Jul 6, 2017·International Journal of Molecular Sciences·Krystian MiazekDorothee Goffin

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