Gravitational sedimentation - an efficient chromium removal method from the tanning industry wastewaters
2008
Vukic, Lj.M., University of Banjaluka, Banjaluka (Bosnia and Herzegovina). Faculty of Technology | Gvero, P.M., University of Banjaluka, Banjaluka (Bosnia and Herzegovina). Faculty of Mechanical Engineering | Maksimovic, M.D., University of Banjaluka, Banjaluka (Bosnia and Herzegovina). Faculty of Technology
Wastewaters generated in different phases of the technological process of leather treatment have a significant organic load as well as containing toxic substances like salts of chromium and sulfides. In order to preserve the environment and natural resources, it is necessary to purify the effluents by using adequate treatment technologies. In the scope of preliminary treatment, the influences of gravitational sedimentation on the changes of the relevant characteristics of cumulative wastewaters were investigated. The best effects were achieved during the removal of chromium and suspended matter. The level of chromium removal was exceptionally high, 88%-96%. A special column for gravitational sedimentation was constructed in order to achieve the high quality experimental result. This enabled monitoring of the setting process in time, with the possibility of mathematical interpretation of the process changes by polynomial and exponential functions.
显示更多 [+] 显示较少 [-]