Investigation of Surface Water Treatment via Integration of Internal Loop Airlift System and Electrocoagulation-flotation with CaCl2 and NaCl as Electrolytes

Eddaqaq, Fatna; Lekhlif, Brahim; Dani, Adil; Errougui, Abdelkbir; El Kouali, Mhammed; Chtita, Samir

doi:10.22036/pcr.2024.450884.2509

Investigation of Surface Water Treatment via Integration of Internal Loop Airlift System and Electrocoagulation-flotation with CaCl2 and NaCl as Electrolytes

Document Type : Regular Article

Authors

Fatna Eddaqaq ¹

Brahim Lekhlif ²

Adil Dani ³

Abdelkbir Errougui ¹

Mhammed El Kouali ¹

Samir Chtita ¹

¹ Laboratory of Analytical and Molecular Chemistry, Faculty of Sciences Ben M’Sick, Hassan II University of Casablanca, Morocco

² Research team “Hydrogeology, Water Treatment and Purification and Climate Change, Hassania School of Public Works Casablanca, Morocco

³ Laboratory of Process and Environmental Engineering, Faculty of Sciences and Technics of Mohammedia, Hassan II University of Casablanca, Morocco

https://doi.org/10.22036/pcr.2024.450884.2509

Abstract

This study investigates water treatment for drinking water production using an integrated system combining the internal loop airlift technique and electrocoagulation. Synthetic solutions with defined turbidities were prepared for experimentation. The airlift reactor comprises two compartments, the Riser and the Downcamer, with aluminum electrodes powered by a variable-potential DC generator. Energizing the electrodes releases Al3+ at the anode and OH- and hydrogen at the cathode, facilitating the electrocoagulation-flotation process. Qualitative analysis indicates an increase in floating foam with treatment time and electrolyte conductivity. The system's performance was evaluated by monitoring parameters such as turbidity, pH, conductivity, and oxidizability, demonstrating a significant reduction in suspended and organic matter. Treatment with NaCl and CaCl2 electrolytes resulted in removal efficiencies of 94% and 88% for turbidity, and 58.92% and 75% for organic matter, respectively. These results were confirmed by analyzing the IR spectra of the sludge post-treatment. This integrated approach shows promise for effective surface water treatment, offering potential for practical application in drinking water production systems.

Graphical Abstract