Wastewater Treatment from Krai Phakdee Wittayakom School Food Court with Compressed Effective Microorganisms

Abstract

The purpose of this research was to explore the effectiveness of Compressed Effective Microorganisms (EM) produced by mixing different raw materials, specifically water hyacinth and pineapple peel, in treating wastewater. The experiment was conducted under non-oxygenated conditions, and the EM Compressed was dried using three methods: baking, sun-drying, and wind-drying. Parameters analyzed included Total Suspended Solids (TSS), Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD), Total Dissolved Solids (TDS), and pH. The results revealed that the pineapple peel formulation of compressed EM, in baked form, achieved a reduction of TSS by 99.63%. The water hyacinth mixed formulation of compressed EM, in all forms, effectively increased DO levels from 15.53 mg/l to 28.73 mg/l. BOD removal was most effective with the pineapple peel formulation, both in baked and wind-dried forms, at 100%. The water hyacinth mixed formulation, in wind-dried form, was the most successful in reducing TDS by 84.74%. Moreover, both formulations, regardless of the drying method, effectively adjusted pH levels within standard limits. Hence, selecting the pineapple peel formulation for wastewater treatment is recommended due to its superior performance across various parameters.