Combined Natural Coagulant Powder Peels Apricot and Chemical Coagulants MgCL3 for Dairy Wastewater Treatment

The study revealed that the application of natural and chemical coagulants in dairy wastewater treatment significantly enhances pollutant removal efficiency. In terms of turbidity, the natural coagulant at a concentration of 45 mg/L achieved a removal efficiency of 61.67%, while the chemical coagulant at the same concentration reached 85%. When combined at a concentration of 15+45 mg/l, the efficacy of removal was enhanced to 95.8%. Similarly, for total dissolved solids (TDS), the natural and chemical coagulants at 45 mg/L exhibited removal efficiencies of 75.91% and 85%, respectively, which improved to 95% when combined. Regarding total suspended solids (TSS), the natural coagulant removed 68%, and the chemical coagulant removed 88% at 45 mg/L, with a combined application yielding a 94% removal rate. For chemical oxygen demand (COD), the removal efficiencies were 68.80% and 83.20% for the natural and chemical coagulants, respectively, whereas their combination at 45+15 mg/L enhanced the removal to 96%. Likewise, biochemical oxygen demand (BOD) removal was 71.05% with the natural coagulant and 86.84% with the chemical coagulant, while their combination resulted in a removal efficiency of 94.7%. These findings demonstrate the substantial improvement in dairy wastewater treatment performance through the synergistic use of natural and chemical coagulants