Yüksek koi içeren tekstil atıksularının fizikokimyasal, ozon/uv ve adsorpsiyon yöntemleriyle arıtılabilirliğinin araştırılması
Date
2005
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Uludağ Üniversitesi
Abstract
Bu çalışmada eritme, apretan ve boyama aşamalarından oluşan, 41.120 mg/L KOİ içeren ve biyolojik ayrışabilirliği oldukça düşük olan tekstil atıksuyu fizikokimyasal, fotokimyasal ve adsorpsiyon prosesleriyle arıtılmış ve fizikokimyasal arıtmaya dayalı olarak ozonla oksidasyon, ozon/UV oksidasyonu ve adsorpsiyon prosesleri ayrı ayrı uygulanarak KOİ giderme verimleri belirlenmiştir. Alümle (1250 mg/L), alüm (8000 mg/L)+non-iyonik PE’le (Poli Elektrolit) (4 mg/L) ve PAC’la (Poli Alimünyum Klorür) (2500 mg/L) yapılan fizikokimyasal arıtmalar sonucunda sırasıyla; %54, %56 ve %60 KOİ giderme verimleri elde edilmiştir. Yapılan çalışmalar sonucunda en uygun doz olarak 1000 mg/L PAC seçilmiş, bu dozla yapılan arıtılabilirlik sonucunda %52,33 oranında KOİ giderme verimi bulunmuştur. Elde edilen atıksularla ayrı ayrı ozonla oksidasyonla (3 saat boyunca, 2 g O3/sa dozlamayla) %24,07 KOİ giderme verimi, ozon/UV oksidasyonuyla (24 saat boyunca, 250 mg O3/sa dozlamayla) %36,8 KOİ giderme verimi bulunmuş ve 0,5-1 mm boyutunda Jacobi marka GAC (Granül Aktif Karbon) kullanılarak Langmuir İzotermi yardımıyla adsorpsiyon kapasite değeri belirlenmiş (Qo =333,33 mg KOİ/g GAC) ve bu verilere dayanarak 200 mg/L KOİ deşarj kriterini sağlayacak şekilde adsorpsiyon kolonları boyutlandırılmıştır. Boyutlandırma sonucunda 0,75 m çapında, 3,5 m yüksekliğinde, 7 adet (6 asıl+1 yedek) adsorplama kolonu bulunmuştur. Bu atıksu için arıtma verimleri karşılaştırıldığında fizikokimyasal ve adsorpsiyon prosesinin uygun olacağı kanaatine varılmıştır.
In this study, physicochemical, ozone/UV and adsorption treatment technologies have been carried out on non-biodegradable textile industry wastewater which is existing from dissolving, finishing and dyeing processes including high COD levels (COD=41.120 mg/L) and COD removal efficiencies of these processes have been determined. In physicochemical treatability studies alum (1250 mg/L), alum (8000 mg/L) + non-ionic PE (4 mg/L) and PAC (2500 mg/L) coagulants were used and COD removal efficiencies were determined as 54%, 56% and 60% respectively. PAC were selected as a best coagulant in 1000 mg/L dosage and 52,33% COD removal efficiency were determined. Ozone and O3 / UV processes were applied and 24,07% (in 3 hours retention time and 2 g O3/h) and 36,8% (in 24 hours retention time and 250 mg O3/h) COD removal efficiencies were observed in respectively. In adsorption experiments, Jacobi active carbon (0,5-1 mm) was used and adsorption capacity was calculated from Langmuir adsorption isoterm, as 333,33 mg COD / g GAC (Qo ). Parallel to this structure, adsorption columns were designed and 6+1 columns (3,5 m height and 0,75 m diameter) were found. At the end of these processes, treatment efficiencies were compared and physicochemical and adsorption processes have been found properly in this textile wastewater.
In this study, physicochemical, ozone/UV and adsorption treatment technologies have been carried out on non-biodegradable textile industry wastewater which is existing from dissolving, finishing and dyeing processes including high COD levels (COD=41.120 mg/L) and COD removal efficiencies of these processes have been determined. In physicochemical treatability studies alum (1250 mg/L), alum (8000 mg/L) + non-ionic PE (4 mg/L) and PAC (2500 mg/L) coagulants were used and COD removal efficiencies were determined as 54%, 56% and 60% respectively. PAC were selected as a best coagulant in 1000 mg/L dosage and 52,33% COD removal efficiency were determined. Ozone and O3 / UV processes were applied and 24,07% (in 3 hours retention time and 2 g O3/h) and 36,8% (in 24 hours retention time and 250 mg O3/h) COD removal efficiencies were observed in respectively. In adsorption experiments, Jacobi active carbon (0,5-1 mm) was used and adsorption capacity was calculated from Langmuir adsorption isoterm, as 333,33 mg COD / g GAC (Qo ). Parallel to this structure, adsorption columns were designed and 6+1 columns (3,5 m height and 0,75 m diameter) were found. At the end of these processes, treatment efficiencies were compared and physicochemical and adsorption processes have been found properly in this textile wastewater.
Description
Keywords
Tekstil atıksuyu, Fizikokimyasal arıtma, Ozon/UV, Adsorpsiyon, Yüksek KOİ, Textile wastewater, Physicochemical treatment, Ozone/UV, Adsorption, High COD
Citation
Kestioğlu, K. (2005). "Yüksek koi içeren tekstil atıksularının fizikokimyasal, ozon/uv ve adsorpsiyon yöntemleriyle arıtılabilirliğinin araştırılması". Uludağ Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi, 10(1), 23-32.