COMPARISON OF OZONATION, ADSORPTION AND AIR STRIPPING PROCESS FOR AMMONIA NITROGEN REMOVAL FROM REAL TEXTILE WASTEWATER

Authors : Yalcin GUNES, Ferhat BARUT, Gul KAYKIOGLU, Ali Riza DINCER

Pages : 1179-1189

View : 33 | Download : 9

Publication Date : 2021-10-05

Article Type : Research Paper

Abstract :In this study, the NH4-N, organic nitrogen, color and COD removal were investigated in raw wastewaters insert ignore into journalissuearticles values(WW1, WW2, WW3); of a textile industry that performs cotton and polyester dyeing and printing processes. For this purpose, ozonation at neutral pH insert ignore into journalissuearticles values(pH 7.5); and at high pH insert ignore into journalissuearticles values(pH 10);, powder activated carbon adsorption at pH 7 and air stripping process at high pH insert ignore into journalissuearticles values(pH 10); were used. The maximum removal efficiency for WW1, WW2 and WW3 in terms of NH4-N was obtained by ozonation insert ignore into journalissuearticles values(99%); at high pH and by adsorption insert ignore into journalissuearticles values(96%);. However, the maximum removal efficiency for NH4-N obtained by the air stripping process was determined as 56%. Due to the difficulty of chemical hydrolysis of the organic nitrogen, the removal efficiency by ozonation and air stripping process was low. As a result, ozonation of the raw wastewater at high pH values can be regarded as the most suitable method due to the high pH value of the industrial raw wastewater and higher removal efficiency and easy application according to other processes applied
Keywords : Adsorption, aeration, ammonia nitrogen, ozonation, wastewater treatment

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