제올라이트 주입이 활성슬러지 플럭에 미치는 영향

이형술; 박세진; 윤태일

Clean Technology, Vol.7, No.1, 35-42, March, 2001

Export Citation

제올라이트 주입이 활성슬러지 플럭에 미치는 영향

The effect of zeolite addition on floc in activated sludge process

이형술, 박세진, 윤태일

초록

본 연구에서는 zeolite를 활성슬러지 공정에 주입할 경우 zeolite가 biofloc에 미치는 영향에 대해 알아보기 위해 수행되었다. 두 반응기를 동일 조건으로 운전하였으며 하나는 표준 활성슬러지 공정 (CU)으로, 다른 하나는 zeolite를 폭기조내 4,000 mg/l로 유지 (ZU)하며 비교하였다. 슬러지 플럭 입경을 측정한 결과, 두 반응기 모두 SRT (Solid Retention Time)가 증가함에 따라 플럭 크기도 비례하여 증가하였으나 ZU가 모든 조건에서 CU보다 작은 평균 입경을 나타내었다. 한편, 두 반응기에 대해 슬러지 침전성을 비교한 결과, ZU는 SRT변화에 관계없이 3.4~11m/h의 침전속도를 나타내며 SVI(Sludge Volume Index)도 50~108 ml/g으로 양호한 침전상태를 보였다. 그러나 CU는 SRT 증가에 따라 슬러지 침전성이 큰 영향을 받았고 SRT 40일에서 Sphaerotilus가 우점종을 나타내었으며 이 결과, 슬러지가 전혀 침전하지 않았다.

This study was performed to evaluate the effect of zeolite addition on biofloc in aictvated sludge process. Two units were compared each other, in which one was operated as control unit (CU) and the other was managed by adding zeolite into aeration basin to sustain 4,000 mg/l (ZU). It was observed that flocs of both units were enduringly increased in medium size by extending SRT (Solid Retention Time), although their effect size of ZU was smaller than theirs of CU. Zeolite application excessively improved sludge settling property and ZU presented sludge settling velocity of 3.4 to 11 m/h regardless of SRT variation. The sludge volume index (SVI) was in the range of 50 and 108 ml/g. Conversely, the sludge settling velocity of CU seriously depended on SRT increase, and sludge sedimentation was not achieved at a 40 days of SRT due to Sphaerotilus appeared predominantly in reactor

[References]

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Bowen RB, Dempsey BA, Water Sci. Technol., 26, 2511 (1992)
Pirtola L, Hultman B, Andersson C, Lundeberg Y, Water Res., 33, 1799 (1999)
Cantet J, Paul E, Clauss F, Water Sci. Technol., 34, 75 (1996)
Rasmussen MR, Larsen T, Clauss F, Water Sci. Technol., 34, 11 (1996)
Chudoba P, Pannier M, Environ. Technol., 15, 863 (1994)
Olah J, Papp J, Meszaros-kis A, Mucsi GY, Kalio D, Simultaneous Separation of Suspended Solids, Ammonium and Phosphate Ions from Wastewater by Modified clinoptilolite Zeolites as Catalysts, Sorbents and Detergent Builiters, Karge H.G. and Weitkamp, J. (editors), Elsevier Science, Amsterdam, The Netherlands (1989)
정진영, 신항식, 정윤철, SBR내에서의 분말 제올라이트의 역할을 이용한 새로운 질소제거 공정, 한국물환경학회·대한상하수도학회·한국수도협회, 공동춘계학술발표회 논문집, 33-36 (2000)
American Society for Testing and Materials, Standard Test Method for Specific Gravity and Density of Semi-Solid Bituminous Materials (Psycometer Method) West Conshohocken, PA, D70-97 (1997)
APHA, AWWA and WEF, Standard Methods for the Examination of Water and Wastewater, 20th Edition (1998)
Harold JB, Microbial Applications a Laboratory Manual in General Microbiology, 5th Edition, Wm. C. Brown Publisher (1990)
Knocke WR, Zentkovich TL, J. WPCF, 58, 1118 (1986)
Stotzky G, Activity, Ecology and Population Dynamics of Microorganisms in Soil. CRC Cril. Rev. Microbiol. 59-137 (1972)
Karr PR, Keinath TM, J. WPCF, 50, 1911 (1978)

[1] Argaman Y, Barnard J, Daigger GT, Enkenfelder WW, Hermanowicz SW, Jenkins D, Polson SR, Sigmund TW, Stensel HD, Phosphorus and Nitrogen Removal from Municipal Wastewater; Principles and Practice, second edition, Sedlak, R.I. (editor), Lewis Publishers, N.Y., U.S.A. (1991)

[2] Bowen RB, Dempsey BA, Water Sci. Technol., 26, 2511 (1992)

[3] Pirtola L, Hultman B, Andersson C, Lundeberg Y, Water Res., 33, 1799 (1999)

[4] Cantet J, Paul E, Clauss F, Water Sci. Technol., 34, 75 (1996)

[5] Rasmussen MR, Larsen T, Clauss F, Water Sci. Technol., 34, 11 (1996)

[6] Chudoba P, Pannier M, Environ. Technol., 15, 863 (1994)

[7] Olah J, Papp J, Meszaros-kis A, Mucsi GY, Kalio D, Simultaneous Separation of Suspended Solids, Ammonium and Phosphate Ions from Wastewater by Modified clinoptilolite Zeolites as Catalysts, Sorbents and Detergent Builiters, Karge H.G. and Weitkamp, J. (editors), Elsevier Science, Amsterdam, The Netherlands (1989)

[8] 정진영, 신항식, 정윤철, SBR내에서의 분말 제올라이트의 역할을 이용한 새로운 질소제거 공정, 한국물환경학회·대한상하수도학회·한국수도협회, 공동춘계학술발표회 논문집, 33-36 (2000)

[9] American Society for Testing and Materials, Standard Test Method for Specific Gravity and Density of Semi-Solid Bituminous Materials (Psycometer Method) West Conshohocken, PA, D70-97 (1997)

[10] APHA, AWWA and WEF, Standard Methods for the Examination of Water and Wastewater, 20th Edition (1998)

[11] Harold JB, Microbial Applications a Laboratory Manual in General Microbiology, 5th Edition, Wm. C. Brown Publisher (1990)

[12] Knocke WR, Zentkovich TL, J. WPCF, 58, 1118 (1986)

[13] Stotzky G, Activity, Ecology and Population Dynamics of Microorganisms in Soil. CRC Cril. Rev. Microbiol. 59-137 (1972)

[14] Karr PR, Keinath TM, J. WPCF, 50, 1911 (1978)