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최정우(Jeung Woo Choi),현길수(Kil Soo Hyun),염국환(Gug Hwan Yum) 한국수처리학회 2002 한국수처리학회지 Vol.10 No.3
N/A The influent of mixed wastewater of night-soil and leachate from waste landfill to existing wastewater treatment plant have increased, which have resulted in the increase of the levels of nitrogen, phosphorus and heavy metals in the effluent from activated sludge process. The pretreatment of the mixed wastewater needs to improve the effluent from activated sludge process. As physiochemical and biological pretreatment processes of the mixed wastewater, coagulation-sedimentation process using alum as coagulant and anaerobic-oxic biofilm process(AOBP) packed with fibrous media and honey-comb media have compared to reduce the contaminants. As a results, AOBP was more effective in reducing nitrogen, phosphorus and heavy metals than the physicochemical process:COD 20∼30% NH_4-N 30∼40%. P0_4-P 20%, heavy metals(Fe, Cr^6+) 10∼20%.
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세라믹 담체 Biotower 에 의한 혼합하수의 고도처리
최정우(Jeung Woo Choi),현길수(Kil Soo Hyun),김홍구(Hong Gu Kim),염국환(Gug Hwan Yum) 한국수처리학회 2001 한국수처리학회지 Vol.9 No.2
N/A In order to remove nitrogen and phosphorus from mixtured wastewater of domestic wastewater, night-soil, and leachate from the waste landfill site, this researches were performed to evaluate a characteristics of the treatment of Biotower using ceramic media of new biological process. The Biotower process consists of anaerobic, aerobic and anoxic zones. The experiment was carried out at S Wastewater Treatment Plant, located at Kyungbuk province. Based on the results of this research, at volumetric loadings of 0.08∼0.62㎏BOD/㎥.d, 0.06∼0.36㎏COD/㎥.d and 0.07∼0.64㎏SS/㎥.d, the percentages of BOD, COD, and SS removal averaged 90%, 80%, and 90%, respectively with all effluent of less than 10㎎/L. total nitrogen(TN) and total phosphorus(TP) removal were 50% with effluent of 7㎎/L and 70% with effluent of 0.6㎎/L, respectively. Influent BOD/TN ratio ranged from 2.82 to 7.38 and BOD/TP ratio from 15.57 to 61.80. TP removal averaged 60% at TN/TP ratio of 7. At linear velocity(LV) 50m/day of Biotower, the removal rates averaged more than 85% for BOD and SS, and 70% for COD. TN and TP removals at more than LV 40m/day averaged 50% and 65%, respectively.
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