펜턴산화와 막분리의 혼성공정에 의한 도금폐수처리

김선일; 노성희; 나재운; Sun Il Kim; Sung Hee Roh; Jae Woon Nah

Journal of the Korean Industrial and Engineering Chemistry, Vol.11, No.4, 360-365, June, 2000

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펜턴산화와 막분리의 혼성공정에 의한 도금폐수처리

Plating Wastewater Treatment by Hybrid Process of Fenton's Oxidation and Membrane Separation

김선일 ^†, 노성희 , 나재운 ¹

조선대학교 화학공학과, 광주 501-759
¹순천대학교 고분자공학과, 전남 540-742

Sun Il Kim^†, Sung Hee Roh , and Jae Woon Nah¹

Department of Chemical Engineering, Chosun University, Kwangju 501-759, Korea
¹Department of Polym. Sci. and Eng., Sunchon National University, Chonnam 540-742, Korea

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초록

본 연구의 목적은 펜턴사환와 막분리의 혼성공정에 의해 도금폐수를 처리할 때의 최적운전조건을 찾는데 있다. 펜턴산화로 전처리한 후의 상등액을 막분리공정에 유입시켰다. 펜턴산화반응의 최적운전조건은 pH 4에서 H₂O₂와 FeSO₄ 7H₂O의 주입량이 각각 550mg/L 및 500mg/L이었다. 나권형 역삼투막을 이용한 막분리는 pH 8.5와 운전압력 4.2kg_f/㎠일 때 최적의 효과를 나타내었다. 최종처리수의 COD, Cr³⁺, Cr³⁺,CN^- 및 Zn²⁺의 농도는 각각 14.44mg/L, 0.02mg/L, 0.01mg/L, 0.16mg/L 및 0.43mg/L이었으며, pH는 7.8로써 pH 조절없이 도금공정의 세척수로 재사용할 수 있을 것으로 사료된다.

The objective of this study is to propose optimum operating conditions in the treatment of the plating wastewater by using the hybrid process of Fenton''s oxidation and membrane separation. The supernatant after pre-treatment of Fenton''s oxidation was fed to membrane separation process. Optimum conditions for Fenton''s oxidation were pH 4 with dosage of H₂O₂ and FeSO₄ 7H₂O being 550mg/L and 500mg/L, respectively. The best conditions for the supernatant treatment were found to be pH 8.5 and operating pressure of 4.2 kg_f/㎠ in the membrane separation when reverse osmosis (RO) membrane of spiral wound type was used. The final treatment water quality was 14.44 mg/L, 0.02mg/L, 0.01mg/L, 0.16mg/L and 0.43mg/L in concentrations of COD, Cr³⁺, Cr⁶⁺, CN^- and Zn²⁺, respectively and pH 7.8. It was found that the final water was recyclable to the plating process without further adjustment of pH.

Keywords:Fenton's oxidation;membrane separation;supernatant;reverse osmosis (RO)

[References]

Bowers AR, Huang CP, J. Prog. Water Technol., 12, 629 (1980)
Huang CP, Wu MH, J. WPCF, 47, 2437 (1975)
김동민, 안승구, 이동훈, 대한환경공학회지, 3, 39 (1981)
Benefield LD, Judkins JF, Weand B, "Processes Chemistry for Water and Wastewater Treatment," 365, Prentice-Hall Inc., New Jersey (1982)
Jun HJ, "Encyclopedia Physico-Chemical," 1100, Sinil Publication Co. (1985)
佐藤完二, "ツアン含有廢水の處理方法," 公開特許公報 51-67672 (1976)
Bernard CL, Owen BM, "Process for Detoxifying Cyanide Wastewater," U.S. Patent, 3,617,582 (1971)
Joseph GM, "Zinc Sludge Recycling after Kastone Treatment of Cyanide-Bearing Rinse Waste," EPA-600/2-77-038 (1997)
小池榮, "無機シアン化合物の除去方法," 公開特許公報 52-53817 (1977)
Owen BM, "Destruction of Cyanide Wastes," U.S. Patent, 3,617,567 (1971)
Zeevalkink JA, J. Water Res., 14, 1375 (1979)
Frederick EB, J. WPCF, 45, 221 (1973)
Murphy RS, Nesbitt JB, "Biological Treatment of Cyanide Wastes," Engineering Research Bull B-88, The Penn. State Univ. (1964)
Fenton HJH, J. Chem. Soc., 54, 899 (1894)
Haber F, Weiss J, J. Proc. Roy. Soc., 147, 332 (1934)
환경부, "도금공정으로부터 유가금속 회수기술 개발,", 43 (1993)

[Related Articles]

[1] Bowers AR, Huang CP, J. Prog. Water Technol., 12, 629 (1980)

[2] Huang CP, Wu MH, J. WPCF, 47, 2437 (1975)

[3] 김동민, 안승구, 이동훈, 대한환경공학회지, 3, 39 (1981)

[4] Benefield LD, Judkins JF, Weand B, "Processes Chemistry for Water and Wastewater Treatment," 365, Prentice-Hall Inc., New Jersey (1982)

[5] Jun HJ, "Encyclopedia Physico-Chemical," 1100, Sinil Publication Co. (1985)

[6] 佐藤完二, "ツアン含有廢水の處理方法," 公開特許公報 51-67672 (1976)

[7] Bernard CL, Owen BM, "Process for Detoxifying Cyanide Wastewater," U.S. Patent, 3,617,582 (1971)

[8] Joseph GM, "Zinc Sludge Recycling after Kastone Treatment of Cyanide-Bearing Rinse Waste," EPA-600/2-77-038 (1997)

[9] 小池榮, "無機シアン化合物の除去方法," 公開特許公報 52-53817 (1977)

[10] Owen BM, "Destruction of Cyanide Wastes," U.S. Patent, 3,617,567 (1971)

[11] Zeevalkink JA, J. Water Res., 14, 1375 (1979)

[12] Frederick EB, J. WPCF, 45, 221 (1973)

[13] Murphy RS, Nesbitt JB, "Biological Treatment of Cyanide Wastes," Engineering Research Bull B-88, The Penn. State Univ. (1964)

[14] Fenton HJH, J. Chem. Soc., 54, 899 (1894)

[15] Haber F, Weiss J, J. Proc. Roy. Soc., 147, 332 (1934)

[16] 환경부, "도금공정으로부터 유가금속 회수기술 개발,", 43 (1993)