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ISSN : 1225-4517(Print)
ISSN : 2287-3503(Online)
Journal of Environmental Science International Vol.27 No.11 pp.1073-1081

Study on the Effecting Factors for T-N and T-P Removal in Wastewater Treatment Plant using Path Model Approach

Yeongdae Cho, Seul-ah Lee1), Minsoo Kim, Hyosoo Kim2), Myungwon Choi3), Yejin Kim*
Department of Environmental Engineering, Catholic University of Pusan, Busan 46252, Korea
1)Department of Environmental Engineering, Pusan National University, Busan 46241, Korea
2)Environsoft Co., Ltd., Yangsan 50565, Korea
E-mail :
*Corresponding author : Yejin Kim, Department of Environmental Engineering, Catholic University of Pusan, Busan 46252, Korea Phone : +82-51-510-0621


In this study, an operational data set was analysed by establishing a path model to figure out the actual cause-effect relationship of a wastewater treatment plant (WWTP); in particular, for the effluent concentrations of T-N and T-P. To develop the path models, data sets of operational records including effluent concentrations and operational factors were obtained from a field scale WWTP of 680,000 m3 of treatment capacity. The models showed that the relationship networks with the correlation coefficients between variables for objective expressions indicated the strength of each relationship. The suggested path models were verified according to whether the analyzation results matched known theories well, but sophisticated minute theoric relationships could not be cropped out distinctly. This indicates that only a few paths with strong theoric casual relationships were represented as measured data due to the high non-linearity of the mechanism of the removal process in a biological wastewater treatment.

경로도형 구축을 통한 하수처리장 질소 및 인 제거 영향인자 파악에 관한 연구

조영대, 이슬아1), 김민수, 김효수2), 최명원2), 김예진*
부산가톨릭대학교 환경공학과, 1)부산대학교 환경공학과, 2)(주)엔바이론소프트