수자원 확보를 위한 URC공법의 적용 II: CSO의 처리와 슬러지 재활용에 관한 연구

박세진; 윤태일; 조경철; 김창균

Clean Technology, Vol.6, No.1, 39-49, June, 2000

Export Citation

수자원 확보를 위한 URC공법의 적용 II: CSO의 처리와 슬러지 재활용에 관한 연구

Application of Ultra Rapid Coagulation for Securing Water Resource II: Study of CSO Treatment and Sludge Reuse

박세진, 윤태일, 조경철, 김창균

초록

초고속응집침전공정(URC)은 가중응집제(WCA) 첨가와 슬러지 반송을 통해 floc의 침전 속도를 향상시키고, 입자표면의 흡착을 활성화하여 오염물을 보다 효율적으로 제거할 수 있으며, lamella plate를 포함하는 침전조를 이용하여 초기 우수 유출(CSO)과 같은 막대한 유량에 대하여 경제성 있는 침전조 수면적 부하를 획득할 수 있음을 확인하였다. 또한, 침전조의 최적설계를 위해 유체 유동장 모델을 이용한 모사가 수행되었으며, 공정에서 발생되는 슬러지에 대한 재활용 가능성을 평가하여 2차적 오염부하를 억제하기 위한 방안을 모색하였다.

Ultra Rapid Coagulation (URC) can dramatically remove pollutants loaded in wastewater by adding weighted coagulation additives (WCA) and recycling sludge into the coagulation basin to increase settling velocity and surface adsorption ability of floc. Also settling chamber together with lamella plates offers the high rate settling velocity, which can economically treat a considerable amount of pollutants like as combined sewage overflow (CSO) during the heavy rainfall and reduce the pollutants load into the receiving water for securing water source. It was estimated optimal configuration of settling chamber by using fluent model and the possibilities of reusing the sludge generated in this system.

[References]

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Guibein E, Destalle F, Binot P, Water Sci. Technol., 30(1), 87 (1994)
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[1] Wanner J, Activated Sludge Bulking and Foaming Control, Technomic Publishing, Basel, 327 (1994)

[2] Guibein E, Destalle F, Binot P, Water Sci. Technol., 30(1), 87 (1994)

[3] Odegaard H, Grutle S, Ratnaweera H, An Analysis of Floc Separation Characteristics, Proceeding of the 5th Gothenburg Symposium September 28-30, Nice, France, Chemical Water and Watewater Treatment II, 97-114 (1992)

[4] APHA, Standard Methods for the Examination of Water and Wastewater, 17th ed. Washington D.C.: American Public Health Association (1992)

[5] Pfeifer R, Hahn H, Dissolved H, Air Flotation: Efficiency Removal of Micropollutants from Stormwater Run Off, Proceedings of the 6th Gothenburg June 20-22, Gothenburg, Sweden Chemical Water and Wastewater Treatment Ⅲ, 297-306 (1994)

[6] OTV Depolluer Les Eaux Pluviales, Contribution a L'elaboration D'une Strategie, Collection OTV (1994)

[7] Tambo N, Watanabe Y, Water Res., 13(5), 409 (1979)

[8] Stamou AI, J. Hydaulic Res., 27(5) (1989)

[9] Anon, "Fluent User's Manual," Ver. 4.2, Crearex Inc., Hanover (1990)