<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>In recent years combined chemical-biological wastewater treatment processes have received increasing interest. In the present study wastewater from soil remediation processes were treated by means of 1-step processes like Fenton, aerobic degradation and 2-steps combined method. The effluents resulting from soil remediation processes consist of high surfactant concentration solutions, mobilized oils and oil-in-water (o/w) emulsions. The effectiveness of wastewater treatment was evaluated by COD reduction and surfactant removal. The application of Fenton process alone showed around 80% of COD and surfactant removal, and in case of aerobic process only 60% of COD and 50% of surfactant removal was accomplished. However, the maximum COD reduction and surfactant removal from wastewater samples, above 90%, was obtained in aerobic degradation with Fenton process as pretreatment. Thus, the Fenton process could be effectively applied as a pretreatment step to improve the reduction of both COD and surfactant from wastewater resulting from soil remediation.</p></abstract>

In recent years combined chemical-biological wastewater treatment processes have received increasing interest. In the present study wastewater from soil remediation processes were treated by means of 1-step processes like Fenton, aerobic degradation and 2-steps combined method. The effluents resulting from soil remediation processes consist of high surfactant concentration solutions, mobilized oils and oil-in-water (o/w) emulsions. The effectiveness of wastewater treatment was evaluated by COD reduction and surfactant removal. The application of Fenton process alone showed around 80% of COD and surfactant removal, and in case of aerobic process only 60% of COD and 50% of surfactant removal was accomplished. However, the maximum COD reduction and surfactant removal from wastewater samples, above 90%, was obtained in aerobic degradation with Fenton process as pretreatment. Thus, the Fenton process could be effectively applied as a pretreatment step to improve the reduction of both COD and surfactant from wastewater resulting from soil remediation.

Combined Chemical-Biological Treatment of Effluents from Soil Remediation Processes by Surfactants Solutions Flushing

Chemical Faculty, Gdansk University of Technology, ul. G. Narutowicza 11/12, 80-233 Gdańsk, Poland

Ecological Chemistry and Engineering S

In recent years combined chemical-biological wastewater treatment processes have received increasing interest. In the present study wastewater from soil...

Combined Chemical-Biological Treatment of Effluents from Soil Remediation Processes by Surfactants Solutions Flushing

Publié en ligne: 08 nov. 2011

Pages: 9 - 18

DOI: https://doi.org/10.2478/v10216-011-0001-3

Mots clés
aerobic treatment, Fenton treatment, non-ionic surfactant, o/w emulsion, PAO6 oil, soil remediation

This content is open access.

Combined Chemical-Biological Treatment of Effluents from Soil Remediation Processes by Surfactants Solutions Flushing

Publié en ligne: 08 nov. 2011

Pages: 9 - 18

DOI: https://doi.org/10.2478/v10216-011-0001-3

Mots clésaerobic treatment, Fenton treatment, non-ionic surfactant, o/w emulsion, PAO6 oil, soil remediation

This content is open access.

Mots clés
aerobic treatment, Fenton treatment, non-ionic surfactant, o/w emulsion, PAO6 oil, soil remediation