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The Process Control Using Modeling Technique in A2O Sewage Treatment Process

모델링기법을 이용한 A2O 하수처리공정에서 주요 공정관리에 관한 연구

  • Park, Jung Soo (Dept. of Civil & Environment Engineering, Cheongju Univ.) ;
  • Kim, Sung Duk (Dept. of Civil & Environment Engineering, Cheongju Univ.) ;
  • Seung, Dho Hyon (Dept. of Civil & Environment Engineering, Cheongju Univ.)
  • 박정수 (청주대학교 토목환경공학과) ;
  • 김성덕 (청주대학교 토목환경공학과) ;
  • 도현승 (청주대학교 토목환경공학과)
  • Received : 2020.05.04
  • Accepted : 2020.06.12
  • Published : 2020.06.30

Abstract

The efficiency of sewage treatment was ananlyzed selecting a sewage treatment plant in Gyeonggi-do where A2O process was applied. Statistical techniques based on the operation data of the sewage treatment were used. The main factors directly affecting the efficiency of the treatment process were analyzed using a GPS-X model. The correlation analysis and one-way ANOVA were performed. The T-N and NH4+-N values of the effluent did not generate statistically significant level (p-value:>0.05) when compared with C/N ration values. Removel of nitrogen components form sewage treatment plants were affected by temperature, HRT, SRT and DO. In the case of BOD, all operating factors were affected, while COD was affecte by factors of HRT, STR and DO. In simulations using GPS-X, the parameters that greatly influence was included the maximum sedimentation rate, the dependent nutrient microbial yield (anoxic), the phosphorus saturation coefficient, the dependent nutrient microbial killing rate, the dependent nutrient microbial maximum growth rate, and the independent trophic microorganisms. The maximum growth rate and the maximum setting rate were identified.

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