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강용태 ( Yong Tae Kang ),송근관 ( Kune Kwan Song ),손정호 ( Jeong Ho Sohn ),김연은 ( Yun Eun Kim ) 한국수처리학회 2012 한국수처리학회지 Vol.20 No.4
The purpose of this study is to investigate of sedimentation and characteristics of heavy metals removal for tunneling wastewater treatment. In the first experiment. Applied turbidity concentration was in the ranged 200~2,000NTU at bed depth of 50cm and Filtration velocity of 300m/day. In the second experiment, applied the turbidity concentration for raw water was in the ranged 1,000~6,000NTU. HRT of sedimentation was 15min 150min. The characteristics of raw ∼ water were pH 7.5, temperature 22.8 , salinity 15.2 and TDS 15.1g/L. As a result, raw water ℃ ‰ quality has a significant impact on the efficiency of the filtration. The sedimentation should be installed in pretretment process of the filtration because of high turbidity tunneling wastewater. The concentration of turbidity in the filtration influent should be pretreated with 400NTU. Therefore, the minimum HRT of grit chamber with turbidity concentration are 60,60,90 and 120min at 1,000, 2,000, 4,000 and 6,000NTU, respectively. For Al, Fe and Cd reduction, the removal efficiency were 53.0%, 70.5%, 66.8% respectively. This results show that turbidity, SS removal efficiency are similar to heavy metal removal efficiency in sedimentation.
강용태(Yong Tae Kang),송근관(Kune Kwan Song) 한국수처리학회 2002 한국수처리학회지 Vol.10 No.3
N/A Drinking water sources of Busan Metropolitan City has contaminated by the inflow of inadequately treated domestic sewage and waste water from the middle and upstream of the Nakdong river. In order to solve these problems Water Treatment System by Biofiltration was configurated and found out the characteristics of the Existing Water Treatment System by Rapid Sandfiltration and the Alternative Water Treatment System by Biofiltration. The biological treatment process in the pre-treatment, biofilter using sedimentation, dual media filter and BZC is very effective in removing NH_4-N, Chl-a, KMnO_4 consumption, DOC, THMFP.
터널폐수 처리를 위한 섬유여과 공정의 응집 전처리에 따른 최적운전조건결정
강용태 ( Yong Tae Kang ),송근관 ( Kune Kwan Song ),송정호 ( Jeong Ho Sohn ),김연은 ( Yun Eun Kim ),배종환 ( Jong Hwan Bae ) 한국수처리학회 2012 한국수처리학회지 Vol.20 No.3
The purpose of this study is to investigate the optimal operating conditions of fiber filter process for effective tunnel wastewater treatment. Tunnel construction wastewater was discharged into the ocean, The sea water polluted by the tunnel wastewater, The average concentration of raw water in SS, Turbidity, COD, TN, TP, Salinity and pH were respectively 675mg/L, 747NTU, 0.76mgIL, 3.gmg/L, 0.32mg/L, 1 5o and 7.46. The sampling port of filter bed depth was 30-100cm. And Filtration velocity of fiber filter process was 100-1000m/day. Suitable pre-treatment is required because of high turbidity for Tunnel wastewater treatment. As a result, the optimal operating conditions of fiber filter process are 1 000m/day of filtration velocity, 80cm of bed depth without coagulation and 1 000m/day of filtration velocity, 30cm of bed depth with coagulation, In 400NTU, turbidity of raw water without coagulation showed 2,601, 783won, which is more cost-effective than fiber filter process with coagulation.
고속침전여과 시스템의 응집제 주입을 이용한 터널폐수 처리 연구
강용태 ( Yong Tae Kang ),송근관 ( Kune Kwan Song ),손정호 ( Jeong Ho Sohn ),김연은 ( Yun Eun Kim ) 한국수처리학회 2011 한국수처리학회지 Vol.19 No.6
In this paper, highrate clarifier filtration(HCF) system is operated for tunneling wastewater with coagulant. The purpose of this study is to investigate coagulant injecting position on HCF system and characteristics of heavy metals removal for tunneling wastewater treatment. The linear velocity(LV) of HCF column 1,2 were 300m/day and 150m/day, respectively. Characteristics of tunneling wastewater is neutral pH, Turbidity is experimented from 5943 to 357NTU. And optimum dosage of aluminum sulfate was 20mg/L that used this study. As a result, Coagulant injecting to HCF column 2 was more efficient for backwash cycle, because backwash cycle was 20% long over when 20mg/L of optimal alum injecting to HCF column 2. For Al, Fe and Mn reduction, the efficiency of HCF system were 95%, 98%, 98% respectively. It tend to similar with turbidity removal of HCF system.