Acta Chimica Slovaca (ACS) publishes papers on fundamental and applied aspects of chemistry, biochemistry, chemical technology, chemical engineering and process control, biotechnology and food technology. Welcome are also topics which include chemical aspects of materials, physical chemistry and chemical physics, analytical chemistry, macromolecular chemistry and biomedical engineering.

Ozone utilisation in decreasing water sources load with resistant and toxic substances

Michal Melicher, Ján Derco *, Lenka Sumegová, Miloslav Drtil

Faculty of Chemical and Food Technology, Slovak University of Technology, Institute of Chemical and Environmental Engineering, Radlinského 9, 81237 Bratislava, Slovakia

E-mail: *

Abstract: Water is becoming a strategic raw material and thus, protection of water resources belongs to priorities. Toxic substances need to be removed prior to the biological treatment stage in a WWTP. Biologically resistant substances flow through the biological treatment stage in a WWTP directly to water recipients, and can travel as far as to the underground water and drinking water sources. Taking into account the large volumes of these substances, their removal from ground water and water sources would be extremely costly. It is economical therefore to remove these already at their source or in a WWTP using separation or degradation processes. This paper deals with the possibility to use ozonisation for pre-treatment of wastewater prior to the WWTP biological stage. Benzothiazole removal efficiency exceeding 95 % within 60 min. of ozonation was reached when combining ozonation with zeolite addition. Partially oxidised COD portion was significant in the first 15 minutes, followed by subsequent growth of mineralised COD portion.

Keywords: benzothiazole, biologically resistant pollutants, kinetics, ozonation, toxicity, water protection, zeolite

Full paper in Portable Document Format: acs_0210.pdf

Acta Chimica Slovaca, Vol. 8, No. 1, 2015, pp. 65—69, DOI: 10.1515/acs-2015-0012