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KMID : 1024520180270111073
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Journal of the Environmental Sciences
2018 Volume.27 No. 11 p.1073 ~ p.1081
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Study on the Effecting Factors for T-N and T-P Removal in Wastewater Treatment Plant using Path Model Approach
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Cho Yeong-Dae
Lee Seul-Ah
Kim Min-Soo
Kim Hyo-Soo
Choi Myung-Won
Kim Ye-Jin
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Abstract
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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.
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KEYWORD
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A2O, Multivariate analysis, Path model, Wastewater Treatment Plant
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