Evaluation of Three Dynamic Models for Aerated Facultative Lagoons  

作　　者：Carlos Joel Abrego-Gongora Roberto Briones-Gallardo Luis Armando Bernal-Jacome Antoni Escalas-Canellas 

机构地区：[1]Programa Multidisciplinario de Posgrado en Ciencias Ambientales,Universidad Autonoma de San Luis Potosi,San Luis Potosi,Mexico [2]Instituto de Metalurgia-Facultad de Ingenieria,Universidad Autonoma de San Luis Potosi,San Luis Potosi,Mexico [3]Centro de Investigacion y Estudios de Posgrado,Facultad de Ingenieria,Universidad Autonoma de San Luis Potosi,San Luis Potosi,Mexico [4]Department of Chemical Engineering&Terrassa School of Engineering,Universitat Politecnica de Catalunya,Terrassa,Spain [5]Laboratory of Control of Environmental Contamination,Institute of Textile Research and Industrial Cooperation of Terrassa(INTEXTER),Universitat Politecnica de Catalunya,Terrassa,Spain

出　　处：《Journal of Water Resource and Protection》2015年第14期1131-1142,共12页水资源与保护（英文）

基　　金：GrupoProagua SA de CV and its staff for the data supply and Consejo Nacional de Ciencia y Tecnologia(CONACYT)for Carlos Joel Abrego-Gongora’s scholarship(No.166201).

摘　　要：In this research, three existing dynamic mathematical models for aerated lagoons were applied to an aerated facultative lagoon (AFL) plant for municipal wastewater treatment. The models’ ability to describe the behavior of the primary lagoon was evaluated, and the advantages and limitations of the three models were compared. For this purpose, 7-year operational data from the municipal WWTP were collected and processed;other necessary data—like dynamic temperature values— were estimated. A 2-year period was used for model calibration, while the remaining 5 years served as validation period. One of the models showed poor calibration fit values in the effluent concentration description (R2 of 0.242 and RMSE of 16.8 mg/L);however, with some modifications the adjust was enhanced (R2 of 0.409 and RMSE of 14.0 mg/L);a second model displayed a poor to moderate adjust (0.489 and 13.0 mg/L, respectively), and the third model achieved a moderate fit (0.528 and 11.9 mg/L), though it provided an overestimation of effluent concentration, especially in periods of heavy and frequent rain;this model with some adaptations the adjust was enhanced (R2 of 0.575 and RMSE of 11.4 mg/L). The validation fits are even lower, illustrating the inability of these models to properly describe the AFL behavior. The possible causes of the models’ inadequacy are discussed. Finally, it is established that in terms of AFL behavior description more research and model development are needed.In this research, three existing dynamic mathematical models for aerated lagoons were applied to an aerated facultative lagoon (AFL) plant for municipal wastewater treatment. The models’ ability to describe the behavior of the primary lagoon was evaluated, and the advantages and limitations of the three models were compared. For this purpose, 7-year operational data from the municipal WWTP were collected and processed;other necessary data—like dynamic temperature values— were estimated. A 2-year period was used for model calibration, while the remaining 5 years served as validation period. One of the models showed poor calibration fit values in the effluent concentration description (R2 of 0.242 and RMSE of 16.8 mg/L);however, with some modifications the adjust was enhanced (R2 of 0.409 and RMSE of 14.0 mg/L);a second model displayed a poor to moderate adjust (0.489 and 13.0 mg/L, respectively), and the third model achieved a moderate fit (0.528 and 11.9 mg/L), though it provided an overestimation of effluent concentration, especially in periods of heavy and frequent rain;this model with some adaptations the adjust was enhanced (R2 of 0.575 and RMSE of 11.4 mg/L). The validation fits are even lower, illustrating the inability of these models to properly describe the AFL behavior. The possible causes of the models’ inadequacy are discussed. Finally, it is established that in terms of AFL behavior description more research and model development are needed.

关 键 词：Aerated Facultative Lagoons Oxygen Demand Mathematical Modeling 

分 类 号：R73[医药卫生—肿瘤]