Éva Szabó, Ákos Korbácss, Alexandra Jakab-Nácsa, Lilla Harnócz, Irén Buzellákné-Pető, Barnabás Buzellák, Fanni Kozma, Ádám Paszternák, Tamás Ungvári, Andrea Mihalkó, László Farkas
Abstract
Wanhua-BorsodChem has always paid particular attention to environmental protection, including wastewater treatment. Future developments at BorsodChem cover the introduction of a new technology to generate industrial water that may contain nitrogen-containing organic compounds. Nitrifying organisms are sensitive to a wide range of organic and inorganic compounds, from which a much lower concentration is enough to inhibit their operation affecting the function of aerobic heterotrophic microorganisms. Therefore, nitrifies are good indicators of the presence of toxic compounds even at low concentrations. It has been reported in the literature many times that aniline inhibits nitrifying microorganisms at concentrations above 5 mg/l in the ’Sequencing Batch Reactor’ or SBR system, while the traditional activated sludge system effectively decomposes aniline. Concentrations up to 350 mg/l are decomposed to less than 4 mg/l so that nitrification does not inhibit the efficiency. Our goal was to perform biological and analytical tests for the treatment of this technological water in order to be properly prepared to receive them and to not endanger the operation of our wastewater treatment plant and our environment. To accurately determine the degradability, we used analysis based on the measurement of TOC, COD, NH4 +, aniline content of waters. Analytical measurement was performed by liquid injection GC method using Shimadzu GC 2010 Plus.
