In this study, solid-liquid separation conditions for coagulation and sedimentation experiments using inorganic coagulant (aluminum sulfate and Poly-Aluminum Chloride (PAC)) were optimized with brine wastewater discharged by the epoxy-resin process. When the turbidity and suspended solid (SS) concentration in raw wastewater were 74 NTU and 4.1 mg/L, respectively, their values decreased the lowest in a coagulant dosage of 135.0 - 270.0 mg Al3+/L. The epoxy resin was re-dispersed in the upper part of wastewater treated above 405.0 mg Al3+/L. The removal efficiencies of turbidity and SS via dosing with aluminum sulfate and PAC were evaluated at initial turbidity and SS of 74 - 630 NTU and 4.1 - 38.5 mg/L, respectively. They increased most in the range from 135.0 - 270.0 mg Al3+/L. The solid-liquid separation condition was quantitatively compared to the correlation of SS removal efficiency between the coagulant dosage and SS concentration based on the concentration of aluminum ions. The empirical formula,   , shows the relationship between SS removal efficiency (R) and coagulant dosage (D) at 38.5 mg/L; it produced high correlation coefficients (r2) of 0.9871 for aluminum sulfate and 0.9751 for PAC.

1)1. 서 론
2. 재료 및 방법
    2.1. 원수
    2.2. 응집제 종류 및 주입량
    2.3. 응집 실험 및 분석 조건
3. 결과 및 고찰
    3.1. 응집제(alum) 주입량에 따른 원수의 처리 특성
    3.2. 응집제(alum와 PAC) 주입량에 따른 원수 농도별탁도와 SS 제거 특성
    3.3. 원수 농도에 따른 응집제(alum와 PAC) 최적 주입량 산정
    3.4. 원수 및 처리수에 대한 CODCr 농도
4. 결 론
REFERENCES

• 이창한(부산가톨릭대학교 환경행정학과) | Chang-Han Lee (Department of Environmental Engineering, Catholic University of Pusan, Busan 46252, Korea)
• 김유진((주)처용환경기술) | Yu-Jin Kim (CheoYong Environmental Technique Co. Ltd., Ulsan 44776, Korea)
• 문성현((주)제일화성) | Sung-Hyun Moon (Jeil Chemical Co. Ltd., Ulsan 44992, Korea)
• 권성헌((주)선진환경) | Sung-Hun Kwon (Sunjin Environment Co. Ltd., Ulsan 46729, Korea)
• 안갑환(부산가톨릭대학교 환경행정학과) | Kab-Hwan Ahn (Department of Environmental Engineering, Catholic University of Pusan, Busan 46252, Korea) Corresponding autho