The Investigation of COD Treatment and Energy Consumption of Urban Wastewater by a Continuous Electrocoagulation System
Küçük Resim Yok
Tarih
2022
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Korean Electrochemistry Soc
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this study, electrochemical treatment of urban wastewater with electrical conductivity of 1000 mu S cm ??? and chemical oxygen demand of 250 mg L ??? was investigated using the variables of initial pH value, current density and flow rate. Electrocoagulation was used, in which aluminum and stainless steel were selected, as the electrochemical treatment process. The electrocoagulation process was operated in continuous mode. The data obtained in experimental studies show that the best COD removal efficiency occurred in experiments where the initial pH value was 6. The increase in current density from 5 A to 15 A decreased the removal efficiency from 79 to 67%. The increase in flow rate under constant current density also reduced the efficiency of removal as expected. In experiments in which current density and flow rate were examined together, the increase in flow rate allowed the application of higher current densities. This situation led to considerable reductions in energy consumption values, even if the COD removal efficiency did not significantly increase. The high COD removal obtained with the use of high flow rate and high current density indicates that the electrocoagulation process can be used for high flow rate municipal wastewater treatment. Received : 1 July 2021, Accepted : 19 December 2021
Açıklama
Anahtar Kelimeler
Urban wastewater, Continuous electrocoagulation, Current density, Electrocoagulation
Kaynak
Journal of Electrochemical Science and Technology
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
13
Sayı
2
