“THE EFFECT OF HYDRAULIC RETENTION TIME (HRT) AND AERATION RATE ON THE REMOVAL OF COD, TSS, AND COLOR IN BATIK WASTEWATER USING A SEQUENCING BATCH REACTOR (SBR)”. 2025. Lingkar: Journal of Environmental Engineering 6 (1): 33-41. https://journal.ar-raniry.ac.id/index.php/lingkar/article/view/8503.