Tertiary procedure for the sustainable recovery of water from industrial or municipal discharges in three stages

Abstract

Tertiary procedure for the recovery of industrial or municipal wastewater in three stages, with the aim of closing the circuit in paper and agri-food industries and other related industries with the same characteristics, which allows the reuse of water in a safe way, removing from the wastewater the harmful mineral salts, formed by phosphorus, calcium, magnesium and silica, also reduces the COD (Chemical Oxygen Demand), eliminates odors, significantly reduces color, eliminates viruses, bacteria and fungi, degrades colloidal matter and removes suspended matter, that is, it also reduces the BOD5 (Biological Oxygen Demand at 5 days). The water obtained through this process can be reused as fresh water in all processes where the water quality meets the acceptable parameters for reuse. For example, this process can safely convert wastewater from municipal treatment plants into water for industrial processes. It can be used as a preliminary step to a Reverse Osmosis process, to obtain demineralized water, with a better conversion rate.

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