Effect of Prunus persica (peach) seed as a coagulant in the treatment of wastewater from the Municipal reservoir of Barranca, Lima

Abstract

Objective: To estimate the effectiveness of peach (Prunus persica) seed as a coagulant in the treatment of wastewater from the Barranca municipal slaughterhouse. Methodology: Four treatments prepared with peach seed (0 mL, 50 mL, 100 mL and 150 mL), and two sedimentation speeds (100 rpm and 300 rpm) were evaluated. The physical and chemical parameters measured were: temperature, electrical conductivity (EC), turbidity, pH and dissolved oxygen (DO). The factorial ANOVA test was used for the analysis of the variables. Results: Sedimentation velocity did not influence the parameters evaluated and showed no interaction with the treatments evaluated. There were significant differences between treatments; when comparing the values obtained with the referential values of the Environmental Quality Technical Standard (ECA), the doses of 50 and 100 mL comply with the established values for pH and OD, while the dose of 150 mL only for pH. All three treatments reduced turbidity by 50%. Conclusions: The peach seed, according to ECA standards, partially improved the physical and chemical parameters of the wastewater from the Barranca municipal slaughterhouse.