Design of an Equipment for the Treatment of Domestic Greywater

Water is an indispensable resource for human life, its availability is decreasing every time due to pollution, excessive consumption and deforestation, so it must be cared, by saving it and reusing it when possible. The objective of this research is to design an equipment for biological filtration based in the use of sand, which reduces the levels of contamination and allows the reuse of gray water produced in homes; such as: showers, bathrooms, sinks, utensil sinks, among others. Method: For the design of the equipment, it was considered as a specification to comply with the permissible limits for water, permissible parameters of water quality, conceptual design, detail design, materialization design. Results: As a result, the gray water treatment equipment allowed the reduction of contamination, maintaining values below what is requested by the water quality parameters, being able to be reused in toilets and home gardens irrigation. The equipment developed allowed saving of 30 to 40% of the water used inside the house and made possible to reuse between 60 to 70% of the treated gray water.