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1. A study of A2/O process in El-Berka WWTP by replacing the anaerobic selector with UASB and adopting a hybrid system in the oxic zone.

Author

Soliman, Moataz, Abdel-Halim, Hisham, Helmy, Ehab, El-Seddik, Mostafa, and Moharram, Marwa

Subjects
*HYBRID systems, *CHEMICAL oxygen demand, *RF values (Chromatography), *INDUSTRIAL wastes, *MATHEMATICAL models
Abstract

A multistage system comprising an upflow anaerobic sludge blanket (UASB) followed by anoxic unit and then oxic activated sludge (AS) with biofilm is studied in El-Berka WWTP, Egypt. Different organic loading wastewaters of chemical oxygen demand (COD) less than 500 mg/L till 3000 mg/L are tested during the study. The hydraulic retention time (HRT) varies for each loading from 7.5 to 10 to 15 h. The UASB reactor accomplishes the removal efficiency of 50%–70% of influent COD. The overall system performs the removal efficiency of 95% of influent COD and NH4-N. Also, the results are verified by a modified mathematical model. [ABSTRACT FROM AUTHOR]

Published
2020
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