Characterization of Wastewaters obtained from Hatay Tanneries

Natural and Engineering Sciences

article

Şana SUNGUR¹  Abdullah ÖZKAN² 

[1] Mustafa Kemal University, Department of Chemistry;Iskenderun Technical University, Department of Petroleum and Natural Gas Engineering

关键词: Leather tanning industry;    wastewater;    COD;    BOD;    chromium;    sulfide;   

DOI  :  10.28978/nesciences.330599

学科分类：数学（综合）

来源: Natural and Engineering Sciences

【 摘 要 】

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 (III), chromium (VI), oil and grease, total suspended solids (TSS), organic matters, biochemical oxygen demand (BOD), chemical oxygen demand (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.

【 授权许可】

CC BY