Adem YURTSEVER, A. Deniz UÇAR, Erkan ŞAHİNKAYA

BİYOLOJİK OLARAK ARITILMIŞ TEKSTİL ENDÜSTRİSİ ATIKSULARININ LABORATUVAR ÖLÇEKLİ ÇAPRAZ AKIŞ SİSTEMİNDE TERS OZMOZ MEMBRANLARI KULLANILARAK GERİ KAZANIMI

Bu çalışmanın amacı; üç farklı ters ozmoz (TO) membranının gerçek tekstil endüstrisi atıksularının arıtımındaki performanslarının değerlendirilmesi ve kıyaslanmasıdır. Çalışmada tekstil endüstrisi atıksularını arıtan gerçek ölçekli atıksu arıtma tesisi çıkış suları kullanılmış olup, membran performansları kimyasal oksijen ihtiyacı (KOİ), renk, iletkenlik ve membran akısı açısından değerlendirilmiştir. Çalışmada 10 saatlik filtrasyon çalışmalarında çapraz akışlı filtrasyon düzeneği ile B400FR, B400HR ve BW30 membranları test edilmiştir. Aynı basınçta yapılan çalışmada, en yüksek permeabilite değerini (3,45±0,12 LMH/bar) ve en düşük akı kaybını (%69) B400HR membranı verirken, akıdaki en fazla azalma (%82) BW30 membranında gözlemlenmiştir. Kullanılan atıksu 4570±130 μS/cm iletkenlik, 188±2 Pt-Co renk ve 35±2 KOİ konsantrasyonlarına sahip olup, test edilen tüm membranlar için süzüntü KOİ değeri 10 mg/L'nin altına düşürülmüş olup, en iyi KOİ giderim performansını B400FR membranı göstermiştir. Ortalama iletkenlik giderimi ise tüm membranlar için %92 değerinin üzerinde olup, B400FR, B400HR ve BW30 için sırasıyla %96, 94 ve 92 değerlerindedir. Benzer şekilde tüm membranlar için renk giderimi %99’un üzerinde gerçekleşmiştir. Elde edilen sonuçlarla süzüntü suyunun aynı endüstride geri kullanımı mümkündür.

Recovery of Biologically Treated Textile Industry Wastewaters by Reverse Osmosis Membranes in the Lab-Scale Cross-Flow System

The aim of this study is the evaluation and comparison of the performance of three different reverse osmosis membranes on the treatment of real textile industry wastewater. The effluent of a real scale wastewater treatment plant which treats the textile industry wastewater, were used and the membrane performances were evaluated in terms of COD, color, conductivity removal and membrane flow rate. B400FR, B400HR and BW30 membranes were tested in a 10-hour filtration tests with a cross-flow filtration system. In the studies conducted at same pressure, the highest permeability value (3.45 ± 0.12 LMH/bar) and the lowest flux loss (69%) were found in the B400HR membrane while the highest decrease in flow was observed in the BW30 membrane (82%). The wastewater conductivity, color and COD concentrations were 4570±130 μS/cm; 188±2 Pt-Co and 35±2 mg/L, respectively and permeate COD values for all tested membranes were reduced below 10 mg/L and B400FR membrane was showed the best COD removal performance. The conductivity removal rates for B400FR, B400HR and BW30 membranes were 96, 94 and 92%, respectively and the average conductivity decrease for tested membranes were over 92%. Similarly, the color removal efficiency for all membranes was over 99%. According to these results, it is possible to reuse the filtrate of tested membranes in the same industry.

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