Analysis and Treatment of Tannery Waste Water by using Combined Filtration and Coagulation Treatment Process
Treatment of Tannery Waste Water by Using Combined Filtration and Coagulation
Keywords:
Tannery waste water treatment, coagulation, filtration, removal of chromium, effluent treatment, treatment processAbstract
Tannery waste water severely effects the quality of water bodies into which it is discharged. Tanning effluent contains organic matter, chromium (Cr) and solid waste such as fleshing, trimmings, shavings and buffing dust. About 60% of the total chromium salts react with hides while 40% of the chromium amount remains in the solid and liquid wastes, which makes it a potential environmental concern. In this research work, tannery waste is processed by the pre-treatment step using a filter media followed by post treatment coagulation process. The later step is analyzed using FeCl3 as a coagulant by varying chemical dose and
settling time. These parameters were optimized to maximize the pollutant removal efficiencies measured in terms of reduction in concentration of Cr, total dissolve solids (TDS), total suspended solid (TSS), turbidity, biological oxygen demand (BOD5) and chemical oxygen demand (COD). It was observed that by using 150 mg/L coagulant dose with 24 hours settling time, maximum removal efficiency of 93 % Cr, 71 % TDS, 95 % TSS, 72 % turbidity, 81 % BOD and 85% COD was achieved. The hybrid treatment process, investigated experimentally, can be employed commercially as a pre-treatment step for tannery waste waters.
References
Shen, T.T. Industrial Pollution Prevention. 2nd ed. Springer, 40 pp. (1999).
Belay, A.A. Impacts of chromium from tannery effluent and evaluation of alternative treatment options. Journal of Environmental Protection 1: 53-58 (2010).
Cheng, Y., F. Yan, & F. Huang. Bioremediation of Cr (VI) and immobilization as Cr (III) by ochrobactrum anthropi. Environmental Science and Technology 44: 6357–6363 (2010).
Lofrano, G., S. Meric, G.E. Zengin, & D. Orhon. Chemical and biological treatment technologies for leather tannery chemicals and wastewaters. Science of the Total Environment 461-462: 265-281 (2013).
Biddut, C. S., B. Basak, & M.D.S. Islam. Chromium effects of tannery waste water and appraisal of toxicity strength reduction and alternative treatment. International Journal of Agronomy and Agriculture Research 3: 23-35 (2013).
Buljan, J., & I. Kral. Introduction to Treatment of Tannery Effluent. United Nations Industrial Development Organization (UNIDO), Vienna (2011).
Aboulhasan, M.A., S. Souabi, & A. Yaacoubi. Pollution reduction and biodegradability index improvement of tannery effluents. International Journal Science & Technology 5(1): 11-16 (2008).
Apaydin, O., U. Kurt, & M.T. Gonullu. An investigation on the treatment of tannery wastewater by electro-coagulation. Global NEST Journal 11(4): 546-555 (2009).
Tasneem, B.K., & A. Virupakash. Treatment of tannery waste using Natural Coagulants. International Journal of Innovative Research in
Science, Engineering and Technology 2(8): (2013).
Manjushree, C., M.G. Mostafa, & T.K. Biswas. Treatment of leather industrial effluents by filtration and coagulation process. Water Resource and Industry 3: 11-22 (2013).
Sabur, M.A., M.M. Rahman, & S. Safiullah, Treatment of tannery effluent by locally available commercial grade lime. Journal of Scientific Research 5(1): 143-150 (2013).
Chowdhury, M., M.G. Mostafa, T.K. Biswas, & A.K. Saha, Treatment of leather industrial effluents by filtration and coagulation process. Water Resources and Industry 3: 11-22 (2013).
Downloads
Published
How to Cite
Issue
Section
License
Creative Commons Attribution (CC BY). Allows users to: copy the article and distribute; abstracts, create extracts, and other revised versions, adaptations or derivative works of or from an article (such as a translation); include in a collective work (such as an anthology); and text or data mine the article. These uses are permitted even for commercial purposes, provided the user: includes a link to the license; indicates if changes were made; gives appropriate credit to the author(s) (with a link to the formal publication through the relevant DOI); and does not represent the author(s) as endorsing the adaptation of the article or modify the article in such a way as to damage the authors' honor or reputation.