2015

Yağlı AtıksularınElektrokoagülasyon ile Arıtımında Yatay ve Dikey Elektrot Yerleşiminin Karşılaştırılması

Bu çalışmada yağlı atıksularınelektrokoagülasyon ile arıtımında elektrot yerleşim düzeninin giderimverimine etkisi incelenmiştir. Kesikli akışlı elektrokoagülasyon deneyleri bor yağı ile hazırlanan sentetikatıksu numuneleri ile gerçekleştirilmiştir. Sentetik atıksularınkarakterizasyonu renk, yoğunluk,bulanıklık, iletkenlik, pH, KOI ve zeta potansiyel ölçümleri ile belirlenmiştir. Deneyler alüminyum levhaelektrotların yatay (EHY) ve dikey (EHD) olarak yerleştirildiği aynı hacme sahip iki farklı elektrokimyasalhücrede, aynı çalışma şartlarında gerçekleştirilmiştir. Elektrotlara uygulanan potansiyel fark ve elektrotalanı artırılması ile her iki elektrot yerleşim düzeninde de giderim verimlerinde artış sağlanmıştır. Ancakelektrotların elektrokimyasal hücredeki konumlarının giderim verimini etkilemediği gözlenmiştir. EHY veEHD’de elde edilen en yüksek KOİ giderim verimleri %97 ve %88’dir. Enerji tüketimleri ise 0.22 ve 0.15kWsa/kgKOİ’dir. Deney sonuçlarına göre EHY’de giderim verimleri daha yüksek olmakla birlikte enerjitüketimi de artış göstermektedir.

TheComparison of HorizontalandVerticalElectrodeLayouts in theTreatment of OilyWastewatersbyElectrocoagulation

In this study, the effect of electrode layouts on removal efficiency was investigated in the treatment of oily wastewater by electrocoagulation. Batch electrocoagulation experiments were performed with synthetic wastewater samples prepared with boron oil. The characterization of synthetic wastewaters was determined by color, density, turbidity, conductivity, pH, COD and zeta potential measurements. The experiments were performed under the same operating conditions in two different electrochemical cells with the same volume in which the aluminum sheet electrodes were placed horizontally (EHY) and vertically (EHD). By increasing the potential difference applied to the electrodes and the electrode area, the removal efficiencies have been increased in both electrode layouts. However, it has been observed that the positions of the electrodes in the electrochemical cell do not affect the removal efficiency. The highest COD removal efficiencies obtained in the EHY and EHD were 97% and 88%, respectively. The corresponding energy consumptions were 0.22 and 0.15 kWh/kg KOI .According to the experimental results, in EHY, energy consumption increases as well as efficiency is higher.

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