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

详细信息	查看全文 | 推荐本文 |

• 作者：Marek Tobiszewski^a ; ^{marektobiszewski@wp.pl} ; Stefan Tsakovski^b ; Vasil Simeonov^b ; Jacek Namie艣nik^a
• 关键词：Wastewater treatment efficiency ; Industrial wastewater ; Organic pollutants ; Environmetrics ; Multivariate statistics
• 刊名：Chemosphere
• 出版年：2012
• 期刊代码：15_00456535
• 类别：env
• 出版时间：May, 2012
• 卷：87
• 期：8
• 页码：962-968
• 文件大小：957 K

摘要

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.