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DOI : 10.17640/KSWST.2018.26.5.97 , Vol.26, No.5, 97 ~ 106, 2018
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| Title |
| Characteristic of Total Nitrogen Removal Using Electro-coagulation in Dyeing Wastewater |
| 장성호 Seong-ho Jang , 김고은 Go-eun Kim , 강정희 Jeong-hee Kang , 윤명주 Myung Joo Yoon , 송영채 Young-chae Song |
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| Abstract |
| Wastewater emissions are increasing by economic growth and development of the industry, and it is the main cause of water pollution. Dyeing wastewater discharge accounts for 8% of industrial wastewater emissions, and since it contains hardly decomposable substances, advanced treatment is necessary. Thus, dyeing wastewater was treated by an electrochemical method(Electro-coagulation) using aluminum as anode and stainless steel 316 as cathode of experiments were carried out in a batch type. Operation parameters, such as current density (20, 40, 60 A/m2), effect of electrolyte (NaCl, Na2SO4) were investigated for their influences on T-N removal efficiencies. Under the condition without electrolyte, when the current density was adjusted to 20 A/m2, 40 A/m2 and 60 A/m2, removal efficiency of T-N was 38.4%, 53.1% and 66.2% at 60min. In comparison with condition of adding NaCl and non-addition, the removal efficiency of adding NaCl was higher 20% on average than non-addition of all current density. In comparison with condition of adding Na2SO4 and non-addition, the removal efficiency of adding Na2SO4 was higher 10% or less on average than non-addition of all current density. |
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| Key Words |
| Aluminum, Dyeing wastewater, Electro-coagulation, T-N |
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