The effect of the combined process of microfiltration and ozonation on the effluent quality of poultry slaughterhouse wastewater

Poultry slaughterhouses (PSH) face serious challenges in wastewater treatment due to the high volume of wastewater and its pollutant content. This manuscript integrates a literature review with laboratory research to provide a more comprehensive understanding of the topic. Using bibliometric analysis to identify research gaps, the study then experimentally evaluated the system by investigating the synergistic effectiveness of an integrated microfiltration and ozonation system to optimize the quality of PSH wastewater effluent. All combination treatments significantly (p 0.05). Optimal conditions achieved in the treatment A1B3 (20 μm filter + 15 g O 3 for 90 minutes) resulted in a 33.2% reduction in COD (from 549.33 to 366.67 mg/L) and a 52% reduction in TSS (from 337.33 to 162.00 mg/L). The smaller filter pore size increased filtration effectiveness and further enhanced the biodegradability of wastewater through partial oxidation. The integrated microfiltration and ozonation system demonstrated significant potential for improving the quality of PSH wastewater effluent. Furthermore, a preliminary techno-economic analysis reveals that the system is highly feasible for industrial-scale application (100 m 3 /day) with an estimated operational cost of USD 0.15/ m 3 , confirming its suitability for resource-limited settings. • This manuscript integrates a literature review with laboratory research • Bibliometric analysis identified four main clusters of research topics. • Microfiltration and ozonation significantly reduced the pollution load, except for BOD.