Ali Fuat AYDIN, Hasan Zuhuri SARIKAYA

Biyolojik proseslerle arıtılmış afyon alkaloidleri endüstrisi atıksularının fenton oksidasyonu ile ileri arıtımı

Bu çalışmanın amacı, laboratuvar ölçekli havasız çamur yataklı reaktör (HÇYR) + havalı ardışık kesikli reaktör (AKR) sistemlerinde iki kademeli biyolojik olarak arıtılmış, yüksek KOl (~700 mg/l), TKN, koyu renk ve biyolojik olarak parçalanamayan organik kirleticilere sahip Afyon Alkaloidleri Endüstrisi (AAE) atıksuları için uygun ve uygulanabilir bir ileri arıtma alternatifi olarak Fenton oksidasyonunun etkisinin araştırılmasıdır. Optimum pH, $H_2O_2$ dozu, $Fe^{2+}/H_2O_2$ molar oranı ve reaksiyon süresinin belirlenmesi için kesikli deneyler yapılmış ve KOİ için %90, renkte ise %95 giderme verimi elde edilmiştir. Optimum oksidasyon ve koagülasyonun gerçekleşmesi için gereken $H_2O_2/FeSO_4$ oranı pH=4'te 200mg/l /600mg/l olarak bulunmuştur. Fenton oksidasyonu prosesi çıkış suları KOİ ve renk açısından alıcı ortama deşarj standartlarını sağlamaktadır.

Fenton's oxidation for advanced treatment of high strength opium alkaloid industry effluents treated with biological processes

The aim of this study was to investigate the applicability of Fenton's oxidation as an appropriate alternative for the advanced treatment of opium alkaloid industry (OAI) effluents characterised with high COD (~700 mg/l), TKN, dark color and non-biodegradable organic pollutant contents after undergoing biological treatment with lab-scale upflow anaerobic sludge blanket reactor (UASBR) + aerobic sequencing batch reactor (SBR) configuration. The batch tests were performed to determine the optimum operating conditions including pH, $H_2O_2$ dosage, molar ratio of $Fe^{2+}/H_2O_2$ and reaction time. It was found that removal efficiencies of COD and color for 30 minutes reaction time were about 90% and 95%, respectively. The ratio of $H_2O_2/FeSO_4$ was determined as 200mg/l /600mg/lfor the optimum oxidation and coagulation process at pH 4. Experimental results of the present study have clearly indicated that the Fenton's oxidation technology is capable to remove almost all parts of the organics which consist of both soluble initial and microbial inert fractions of COD formed during the biological treatment of opium alkaloid industry effluents. Effluents from the Fenton 's Oxidation process satisfy the local effluent standards for COD and color.

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