FEASIBILITY OF SOY WASTE BIO-COAGULANT FOR POLLUTANT REMOVAL IN AQUACULTURE WASTEWATER TREATMENT
DOI:
https://doi.org/10.55197/qjoest.v7i1.271Keywords:
bio-coagulant, aquaculture wastewater, soy waste, wastewater treatmentAbstract
Aquaculture wastewater typically contains high levels of turbidity and total suspended solids (TSS), which may adversely affect receiving water bodies if discharged without adequate treatment. This study evaluated the feasibility of using soy waste as a bio-coagulant for turbidity and TSS removal from aquaculture wastewater through a coagulation–flocculation process. Aquaculture wastewater was collected from a local fishery facility, while soy waste was obtained from a soy-based food processing company. Jar test experiments were conducted under fixed mixing and settling conditions using different bio-coagulant dosages, and the removal efficiencies of turbidity and TSS were evaluated. The results showed that the best soy waste-based bio-coagulant dosage was 0.1 mg/L, achieving turbidity and TSS removals of approximately 9.1% and 5.6%, respectively. Increasing the bio-coagulant dosage beyond this level did not improve removal performance and led to higher turbidity and TSS due to the presence of fine, whitish soy waste particles remaining in suspension. Overall, raw soy waste exhibited limited effectiveness as a standalone bio-coagulant for aquaculture wastewater treatment; however, the findings provide useful insight into its behaviour and highlight the potential for further improvement through pre-treatment or modification.
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