Efficiency of the earthworm method in the removal of pollutants from domestic wastewater

Abstract

The present study determined the efficiency of the earthworm (Lumbricus terrestris) and the Californian red earthworm (Eisenia foetida) in the treatment of wastewater from the Chachapoyas District. The adaptation of the two species was applied during a period of seven days, then they were inoculated to the worm-filter system made up of two wooden structures with four layers, and finally a continuous flow storage tank. To determine the removal efficiency of the species, the amount of concentration of the physicochemical and microbiological parameters of the wastewater that entered the treatment process was analyzed. Obtaining the results that the EF species reduced BOD5 by 92%, 86% COD, 78% NT, 84.4% turbidity, 93% pH and 84% in CT, unlike the LT species, which obtained a 91% reduction in BOD5. , 84% COD, 77% NT, 83% turbidity, 93% pH and 80% in CT. Concluding that the EF species is more efficient in the removal of pollutants from domestic wastewater with an average of 87% compared to the LT species that achieved 85% being acceptable by DS N ° 004-2017-MINAM.