RESEARCH ON MIXING AND COMPOSTING SLUDGE FROM THE WASTEWATER TREATMENT SYSTEM AT THE COCA - COLA VIETNAM FACTORY, HANOI BRANCH TO CREATE PRODUCTS ORIENTED FOR PLANTING

Sludge generated from the wastewater treatment systems of the beverage production industry represents a significant environmental concern. Reusing sludge is considered a sustainable approach. This study applied methods of blending sludge with other biomass materials, such as rice husk charcoal, followed by anaerobic composting. The results indicate that sludge from the wastewater treatment system of the Coca-Cola Vietnam factory, Hanoi branch, mixed with rice husk charcoal at a volumetric ratio of 80:20 and composted anaerobically for 30 days, produced a suitable substrate for tabletop ornamental plants. The study also suggests that this product has the potential to replace traditional growing media, thereby reducing treatment costs while simultaneously delivering both economic and environmental benefits.