Gravitational sedimentation: An efficient chromium removal method from the tanning industry wastewaters | Zendy

Ljiljana Vukić | Zendy; Petar Gvero | Zendy; M. Maksimović | Zendy

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Gravitational sedimentation: An efficient chromium removal method from the tanning industry wastewaters

Author(s) -

Ljiljana Vukić,

Petar Gvero,

M. Maksimović

Publication year - 2008

Publication title -

acta periodica technologica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.134

H-Index - 15

eISSN - 2406-095X

pISSN - 1450-7188

DOI - 10.2298/apt0839121v

Subject(s) - sedimentation , chromium , effluent , process (computing) , environmental science , wastewater , waste management , chemistry , environmental engineering , materials science , computer science , engineering , sediment , metallurgy , geology , paleontology , operating system

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

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