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DOI : ,    Vol.20, No.3, 3 ~ 11, 2012
Title
Decision of Optimal Operating Conditions by Coagulation and Fiber Filter Process for Tunnel Construction Wastewater Treatment
강용태 Yong Tae Kang , 송근관 Kune Kwan Song , 송정호 Jeong Ho Sohn , 김연은 Yun Eun Kim , 배종환 Jong Hwan Bae
Abstract
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.
Key Words
Tunneling wastewater, Coagulation, Filtration velocity, Bed depth, Operating cost
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