This study was conducted to assess the characteristics of pigment wastewater and the removal rates of appropriate treatment by physical, chemical and biological process, and the possibility of reuse for effluent.
Based on the results, the wastewater qualities of pigment were pH 5.1±3.4, temperature 43.0±5.0℃ BOD 1,431.4±589.6㎎/ℓ, COD 2,282.8±66.5㎎/ℓ, turbidity 1,340±82ONTU, color 243.0±147.Ounit, Pb 36.5±9.5㎎/ℓ and Cr^+6 10.3±1.3㎎/ℓ, respectively.
The removal rates of adsorption by activated carbon and filter process were BOD 40.6%, COD 57.0%, turbidity 89.6%, color 87.2%, Pb 86.0% and Cr^+6 10.6%, respectively. And the removal rates of reduction, neutralization, coagulation and air floatation process were BOD 18.2%, COD 24.3%, turbidity 74.3%, color 56.7%, Pb 68.6% and Cr^+6 97.8%, respectively.
The removal rates of activated sludge process were BOD 95.9%, COD 86.0%, turbidity 27.8%, color 25.2%, Pb 26.9% and Cr^+6 50.0%, respectively.
The total removal rates of treatment by physical, chemical and biological process were BOD 98.0%, COD 95.4%, turbidity 98.1%, color 95.8%, Pb 97.0% and Cr^+6 99.0%, respectively.
According to the test results for possibility of reuse with coagulation-adsorption by activated carbon process of effluent, COD was higher than that of raw water and others were similar to that of raw water, thus, it is considered to be reused.

• 정종식(고신대학교 환경관리학과) | Jong-Sik Jung (Dept. of Environmental Management, Kosin University)
• 옥치상(고신대학교 환경관리학과) | Chi-Sang Ok (Dept. of Environmental Management, Kosin University)
• 정재열(고신대학교 환경관리학과) | Jae-Yeal Jeung (Dept. of Environmental Management, Kosin University)
• 황인철(고신대학교 환경관리학과) | In-Chul Hwang (Dept. of Environmental Management, Kosin University)