Fuat ÖZYONAR

Elektrokoagulasyon Prosesi ile Yağlı atıksuların Arıtımı ve Taguchi Metodu kullanılarak Deneysel Koşulların Optimizasyonu

Bu çalışmada, elektrokoagülasyon prosesiyle yağlı atık sulardan Kimyasal oksijen ihtiyacı, Bulanıklık ve Toplam organik madde giderimi araştırılmıştır. Ve Taguchi deneysel metodu kullanılarak optimum deney şartları belirlenmiştir. Bu amaçla çalışmada, KOİ, Bulanıklık ve TOK giderimi üzerine etki eden 5 önemli faktör başlangıç pH, akım, Elektroliz süresi, Hava miktarı, ve elektrot yüzey alanı gibi parametreler optimize edilmiştir. Bu deneysel faktörler 4 seviyede ele alınarak deney koşulları taguchi metoduyla ortogenal diziliş ile L16 (54) deney yapılarak optimize edilmiştir. Deney sonuçlarında elde edilen optimum koşul olarak başlangıç pH 6 (pHi level 3), Akım 1A (I level 2), Elektroliz süresi 20 dk( ECtime level 4), Hava miktarı 2 L/dk (air flow level 3) ve elektrot yüzey alanı 210 cm2 (electrode surface area level 2) bulunmuştur. Bu koşullarda deneysel ve tahmin edilen kirletici giderme verimleri sırasıyla KOİ %92,1-%95,6, TOK %78,5-80,2 ve bulanıklık %96,2-95,7 olarak bulunmuştur. Deneysel verim ile tahmin deneyi arasında elde edilen sonuçlarda yakınlık Taguchi metodunun kullanımının uygunluğunu göstermektedir.

Treatment of Oily Wastewater by Electrocoagulation Process and Optimization of the Experimental Conditions Using Taguchi Method

In this study, electrocoagulation process was used for chemical oxygen demand (COD), total organic carbon (TOC) and turbidity removal from oily wastewaters and Taguchi experimental method was used to determine optimum operational conditions. For this purpose, 5 significant factors (initial pH, current, electrolysis time, air injection flow and electrode surface area) effective in COD, TOC and turbidity removal from the wastewaters were optimized. These experimental factors were handled in 4 levels and experimental conditions were optimized through performing L16 (54) tests with orthogonal series of Taguchi method. Optimum conditions were identified as: initial pH of 6 (pHi level 3), current of 1A (I level 2), electrolysis time of 20 min (ECtime level 4), air injection flow of 2 L/min (air flow level 3) and electrode surface area of 210 cm2 (electrode surface area level 2). Under these conditions, experimental and estimated pollutant removal efficiencies were respectively identified as 92.1-95.6% for COD, as 78.5-80.2% for TOC and as 96.2-95.7% for turbidity. Closer experimental and estimated values indicated the available use of Taguchi method for electrocoagulation process.

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