Treatment Methods for Tannery Wastewater

Abstract

The tannery industry is one of the leading industries in Turkey and produce large volumes of wastewater as a result of leather processing. This wastewater includes a lot of leather fragments, soluble proteins, hairs, lime, sodium sulfate, sodium hydroxide, chromium, phenolic substances. The substances are found in high volume in the wastewater and recycling opportunities are very limited. In the wastewater; sulfur, chromium, organic substances, oil and different types of nitrogen are present as the most important pollutants. For the removal of these contaminants from the tannery wastewater, physical, chemical, biological, advanced treatment and combinations of the methods are used. In this study, wastewater characteristics of tannery industry and treatment processes and process combinations are discussed in detail.

Keywords

• tannery wastewater,industrial wastewater treatment,treatment methods,chemical treatment,biological treatment,color removal,chromium treatment,chromium removal

Deri Atıksuyunun Arıtım Metotları

Abstract

Deri Endüstrisi Türkiye’de en yaygın endüstrilerden biri olup derinin işlenmesi sonucu büyük hacimlerde atıksu oluşmaktadır. Meydana gelen bu atıksu, yüksek miktarda kıl, yün, deri parçaları, kavelata atıkları, çözünmüş proteinler, krom bileşikleri, kireç, sodyum sülfat, sodyum hidroksit ve fenollü maddeleri içermektedir. Bu maddeler hacim olarak çok fazladır ve geri dönüşüm olanakları oldukça kısıtlıdır. Deri endüstrisi atıksularında sülfür, krom, organik maddeler, yağ gres ve çeşitli azot türleri en önemli kirletici parametrelerdir. Deri atıksuyundaki bu kirleticilerin giderilmesi için fiziksel, kimyasal, biyolojik, ileri arıtım ve bu arıtım metotlarının kombinasyonları üzerine çeşitli araştırmalar yapılmıştır. Bu çalışmada, deri üretim prosesleri ve prosesler sonrasında açığa çıkan atıksuyun özellikleri incelenmiş, bu atıksuların arıtımında uygulanan proseslerin ve proses kombinasyonlarının etkinliği incelenmiştir.

Keywords

• deri atıksuyu,endüstriyel atıksuların arıtılması,arıtım metotları,kimyasal arıtım,biyolojik arıtım,renk giderimi,krom giderimi

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