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강용태 ( Yong Tae Kang ),황순주 ( Sun Ju Hwang ),송근관 ( Kune Kwan Song ),강종현 ( Jong Hyun Kang ),장성부 ( Sung Pu Chang ) 한국수처리학회 2010 한국수처리학회지 Vol.18 No.6
This study was compared with water treatment characteristics that is water treatment system of 2-stage biofilter and advanced water treatment system of sandfilter-O3/GAC. Influent water was used grit chamber effluent water of K water treatment plant in Busan. The experiments was operated pilot-plant scale for 100 days. Operating conditions were temperature 20∼29℃ and pH 6.9∼7.9. Optimal EBCT was 30 min, when EBCT changes was 10 to 40 min on biofilter process. The pre-treatment efficiency of biofilter was turbidity 90.0%, color 91.2%, KMnO4 consumption 81.1%, COD(Mn) 91.5%, NH4+-N 92.2%, UV254 71.0%, DOC 54.5%. The comparative analysis on water treatment characteristics was made between 2-stage biofilter and sandfilter-O3/GAC. As a result, 2-stage biofilter was identified about 1∼5% higher efficiency in terms of turbidity, KMnO4 comsumption, NH4+-N and UV254. In addition, 2-stage biofilter was proven more economical because of saving 66% of plant site and without using coagulants.
강용태 ( Yong Tae Kang ),김연은 ( Yun Eun Kim ),손정호 ( Jeong Ho Sohn ),배종환 ( Jong Hwan Bae ),김희영 ( Hee Young Kim ),김남경 ( Nam Kyoung Kim ),송근관 ( Kune Kwan Song ),한상윤 ( Sang Yun Han ),황순주 ( Sun Ju Hwang ) 한국수처리학회 2011 한국수처리학회지 Vol.19 No.4
The purpose of this study is to investigate the characteristics of undersea tunnel construction wastewater and treatment using Highrate Clarifier filtration (HCF). The raw water characteristics of pH, turbidity, salinity, T-N and COD(Mn) were 10.2, 597 NTU, 15 ‰, 13.03 mg/L and 16.25 mg/L, respectively. The linear velocity (LV) of HCF were 300 and 500 m/day. As a result, the efficiency of turbidity and heavy metals removal at linear velocity of 300 m/day were higher than that at LV 500 m/day. For Fe and Mn reduction, the efficiency of HCF were in the range of 14~25% more efficient than that of HF.