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진은정(Eun Jung Jin),길대수(Dae Soo Gil),이창근(Chang Gun Lee),이병헌(Byun Hun Lee) 한국수처리학회 2000 한국수처리학회지 Vol.8 No.4
N/A This study was carried out to investigate the electrolysis treatabillity of livestock wastewater having high concentration of organic matters and nitrogen. Experiments were conducted to study any effects according to the operating conditions such as the current density, retention time and the ratio of added sea water. Possible optimum range for these operating variables are experimentally determined. In electrolysis process, removal efficiencies increased with the current density, ratio of added sea water and the length of retention time. With 0.4d㎡ electrode per 1L reaction volume, it was recommend the best conditions are 30% sea water, 5A/d㎡ current density and 4 hours of HRT. When livestock wastewater treatment applied electrolysis, removal efficiencies of COD, TP and TN lead to 90%, 86%, and 94% respectably. These results may indicated that electrolysis has an excellent nitrogen removal ability for treatment of livestock wastewater.
이병헌(Byung Hun Lee),최해경(Hae Kyoung Choi),길대수(Dae Soo Gil),김정숙(Jeong Sook Kim) 한국수처리학회 1996 한국수처리학회지 Vol.4 No.2
This study was conducted to investigate the how to improve the conventional treatment plants for further removal of organic materials and nutrients, such as N and P. The experiments on the effective removal of the organics and nutrients in the effluent discharged from the J wastewater treatment plant, which is a conventional wastewater treatment plant being operated in Pusan city, were carried out using several treatment processes, including chemical treatment, Anoxic/Oxic process, and conventional activated sludge process. When the chemical treatment was applied with a coagulant dosage of 40 ㎎/ℓ as FeCl₃, the removal efficiencies of COD, SS, and PO₄-P were 57.75%, 90.43%, and 73%, respectively. Overall the Anoxic/Oxic system using the coagulant, was much better than conventional activated sludge process regardless of in aspect of removing the nutrients. In comparing of the nitrogen removal efficiency by the Anoxic/Oxic system, applying chemical treatment following the Anoxic/Oxic system was much better than applying the Anoxic/Oxic system alone. Also, the N removal efficiency by Anoxic/Oxic system was increased as the inner recycle ratio increased from 70% to 100%. Also, in proportion to the increased of inner recycle ratio, that is 70%-300%, Nitrogen removal efficiencies are effective in Anoxic/Oxic system.