Chlorinated solvents in a petrochemical wastewater treatment plant: an assessment of their removal using self-organising maps |
| |
Authors: | Tobiszewski Marek Tsakovski Stefan Simeonov Vasil Namie?nik Jacek |
| |
Institution: | a Department of Analytical Chemistry, Chemical Faculty, Gdańsk University of Technology (GUT), 11/12 G. Narutowicza St., 80-233 Gdańsk, Poland b Chair of Analytical Chemistry, Faculty of Chemistry, University of Sofia “St. Kl. Okhridski”, J. Bourchier Blvd. 1, 1164 Sofia, Bulgaria |
| |
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. |
| |
Keywords: | Wastewater treatment efficiency Industrial wastewater Organic pollutants Environmetrics Multivariate statistics |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|