Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

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Reaction Characteristics of Dairy Wastewater through Aerobic Biodegradability Assessment

호기성 생분해도 평가를 통한 유가공 폐수의 반응특성

  • Choi, Yong-Bum (Dept. of Earth and Environmental Engineering, Kangwon National University) ;
  • Han, Dong-Joon (Dept. of Fire.Environmental Disaster, Gangwon State University) ;
  • Kwon, Jae-Hyouk (Dept. of Earth and Environmental Engineering, Kangwon National University)
  • 최용범 (강원대학교 지구환경시스템공학과) ;
  • 한동준 (강원도립대학교 소방환경방재과) ;
  • 권재혁 (강원대학교 지구환경시스템공학과)
  • Received : 2018.02.12
  • Accepted : 2018.05.04
  • Published : 2018.05.31
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Abstract

The purpose of this study is to investigate the characteristics of the substrate of dairy wastewater through aerobic biodegradation and to use the results as the basic data for the efficient treatment of dairy wastewater. The SCODcr of the part of the matter that consisted of readily biodegradable organics (Ss) was 84.2%, which is higher than those of seafood processing wastewater (75.8~77.9%) and pigpen wastewater (58.2%). The proportion of non-biodegradable organics (SI) ranged from 5.6% to 6.4%, and the proportion of inert organics (SIi) generated by microbial metabolism ranged from 3.6 to 3.7%. The content coefficient (YI) of the non-biodegradable dissolved organic matter was in the range of 0.092 to 0.099, and the generation coefficient (Yp) of the inert substance produced by the microbial metabolism was in the range of 0.039 to 0.040. The analysis results of the organic component coefficient showed that approximately 91.0% of the dissolved organic matter of the dairy wastewater was biodegradable, and approximately 92.5% of the dissolved organic matter was the Ss component. Furthermore, the proportion of biodegradable organic matter in the total organic matter (TCODcr) was 89.3%. The proportions of non-biodegradable organics (SI) and non-biodegradable suspended organics (XI) were 3.0% and 7.7%, respectively, which are lower than those in similar wastewater. This means that the milk processing wastewater has a high aerobic biodegradability.

본 논문은 호기성 생분해도를 통하여 유가공 폐수의 기질특성을 파악하기 위하여 수행되었다. 유기물 중 빨리 분해되는 물질(Ss)은 SCODcr 기준을 84.2 %로 조사되었는데, 이는 수산물 가공폐수의 75.8~77.9 %, 돈사폐수의 58.2 % 보다 높은 것으로 조사되었다. 생물학적 분해 불가능한 용존성 유기물(SI)의 비율은 5.6~6.4 %로, 미생물 신진대사에 의해 발생 되는 inert 물질 비율(SIi)은 3.6~3.7 %로 조사되었다. 생물학적 분해 불가능한 용존성 유기물 성분의 함유 계수(YI) 0.092~0.099로, 미생물 신진대사로 생성되는 inert 물질의 생성계수(Yp)는 0.039~0.040으로 산정되었다. 유기물 성분 계수 분석결과, 유가공 폐수의 용존성 유기물 약 91.0 %가 생물학적으로 분해 가능한 물질이고, 이중 약 92.5 %가 빨리 분해되는 Ss 성분으로 조사되었다. 또한 총유기물(TCODcr) 중에 생물학적 분해 가능한 유기물의 비율은 89.3 %로 조사되었다. 생물학적 분해 불가능한 용존성 유기물(SI) 성분은 3.0 %, 생물학적 분해 불가능한 부유성 물질(XI) 성분은 7.7 %로 비교 대상 폐수보다 낮게 조사되었는데, 이는 유가공 폐수가 호기성 생분해도가 크다는 것을 의미한다.

Keywords

References

  1. Ministry of Trade, Industry and Energy, "Competitiveness survey of processed food industry in 2016", 2016.
  2. Chung, Y. H., Chung, D. H. and Baick, S. C., "The formation and control of the biofilm in dairy industry: A review", J. Milk Sci. Biotechnol. 33, pp. 139-151. 2015.
  3. Sang Jae Moon, Byeong Cheol Jeon, Jin Taek Choi, Se Yong Nam, "Solubilization of Dairy Sludge using Ultrasonic Pretreatment", Journal of Milk Science and Biotechnology, vol. 35, no. 4, pp. 244-248. 2017. DOI: https://doi.org/10.22424/jmsb.2017.35.4.244
  4. Sung-Wook Lee, Kyung-Ryang Kim, Sung-Hee Roh, Jae-Wook Lee, Sun-Il Kim, "Effect of Pre-treatments in Membrane Separation Process for Diary Wastewater Treatment", Theories and Applications of Chem. Eng., vol. 15, no. 1, pp. 605-608. 2009.
  5. Choi. Y. B, "Effects of Salt on the Biological Treatment of Seafood Wastewater", Ph. D. Thesis, Department of Environmental Engineering, Kangwon National University of Korea. 2011.
  6. Henze, M., C. P. L. Jr., Gujer, W., Marais, G. V. R., and Matsuo, T., "Activated sludge model no. 1", IAWPRC Sci. and Techn. Report no. 1, IAWPRC, London. 1987.
  7. Ekamn, G. A. and Marais G. V. R., "Procedures for Determining Inflfuent COD Faactions and the Maximum Specific Growth Rate of Heterotrophs in Activated Sludge Systems," Wat. Sci. Tech., vol. 19, pp. 91-114. 1986.
  8. Ding-Joon Han, Jae-Keun Ryu, Yong-Taek Rim, Jay-Myoung Rim, "Reaction Characteristics of Piggery Wastewater for biological Nutrient Remova", J. of KSEE, vol. 20, no. 3, pp. 371-384. 1998.
  9. Yong-Bum, Jae-Hyouk Kwon, Jay-Myung Rim, "Effect of Salt Concentration on the Aerobic Biodegradability of Sea Food Wastewater", J. of KSEE, vol. 32, no. 3, pp. 256-263. 2010.