Effect of Medium Parameters on Treatment of Slaughterhouse Wastewater Using Electrocoagulation Process

Abstract

In the present study, the efficiency of the electrocoagulation process on the treatment of slaughterhouse wastewater was investigated using a batch reactor. The effect of several parameters such as current density (5-20 mA m-2), initial pH (3-10), and distance between electrodes (4-16 mm) was investigated to determine the optimum electrocoagulation condition. Parallel-connected monopolar iron electrodes were used for all experiments. The performance of the experiments was mainly evaluated using the chemical oxygen demand (COD) removal. The optimum conditions were selected as 15 mA m-2 current density, natural pH (7.47), and 16 mm distance between electrodes. Under these conditions a COD removal efficiency of 90.63% was achieved. The operating cost of the process was calculated taking into account the energy and electrode consumption and found to be 9.15 TL kg-1 COD-1.

Keywords

• demir elektrot
• elektrokoagülasyon
• mezbaha atıksuları

Elektrokoagülasyon Prosesi Kullanılarak Mezbaha Atıksularının Arıtımı Üzerine Ortam Parametrelerinin Etkisi

Abstract

Mevcut çalışmada, mezbaha atıksuyunun arıtımı üzerine elektrokoagülasyon prosesinin etkinliği kesikli bir reaktör kullanılarak araştırılmıştır. Akım yoğunluğu (5-20 mA m-2), başlangıç pH’ı (3-10) ve elektrotlar arası mesafe (4-16 mm) gibi çeşitli parametrelerin etkisi optimum elektrokoagülasyon koşulunu belirlemek için incelenmiştir. Paralel bağlanmış monopolar demir elektrotlar tüm deneyler için kullanılmıştır. Deneylerin performansı temel olarak kimyasal oksijen ihtiyacı (KOİ) giderimi kullanılarak değerlendirilmiştir. 15 mA m-2 akım yoğunluğu, doğal pH (7.47) ve 16 mm elektrotlar arası mesafe optimum koşullar olarak seçilmiştir. Bu koşullar altında %90.63’lük KOİ giderim verimi elde edilmiştir. Sistemin işletme maliyeti, enerji ve elektrot tüketimi dikkate alınarak hesaplanmış ve 9.15 TL kg-1 KOİ-1 olarak bulunmuştur.

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