Characterization of Wastewaters Obtained from Hatay Tanneries

Authors : Şana SUNGUR, Abdullah ÖZKAN

Pages : 111-118

Doi:10.28978/nesciences.330599

View : 14 | Download : 7

Publication Date : 2017-06-20

Article Type : Research Paper

Abstract :The leather tanning industry is one of the most significant pollutants in terms of both conventional and toxic parameters. On the other hand, leather industry has an important economic role both in Turkey and in the World. In this study, wastewater samples were taken from 15 different tanneries in the Hatay Region. Wastewaters obtained from liming process and chromium tanning process was analyzed. Sulfide, chromium insert ignore into journalissuearticles values(III);, chromium insert ignore into journalissuearticles values(VI);, oil and grease, total suspended solids insert ignore into journalissuearticles values(TSS);, organic matters, biochemical oxygen demand insert ignore into journalissuearticles values(BOD);, chemical oxygen demand insert ignore into journalissuearticles values(COD);, pH and alkalinity were determined according to Turkish Standard Methods.The determined averages values belong to wastewaters obtained from liming process were as following: pH 11.71; COD 16821 mg L-1; BOD 4357 mg L-1; TSS 39023 mg L-1; oil and grease 364 mg L-1; S-2 concentration 802 mg L-1; alkalinity 2115 mg L-1. The determined averages values belong to wastewaters obtained from chromium tanning process were also as following: pH 4.23; COD 6740 mg L-1; BOD 377 mg L-1; Cr+3 concentrations 372 mg L-1; Cr+6 concentrations 127 mg L-1; TSS 14553 mg L-1; oil and grease 343 mg L-1.The results of all analyzes were higher than wastewater discharge standards. As a result, it’s necessary to use more effective treatments in order to reduce the negative impacts of leather tanning industry that affect environment, natural water resources and at last human health and welfare.
Keywords : Leather tanning industry, wastewater, COD, BOD, chromium, sulfide