Description

In our R&D project we studied the application of an hybrid disinfection-oxidation process, based on the synergism of two different technologies (sonication and ozonation), on wastewater to be reused.
We put our attention on the treatment of complex municipal wastewater, as primary effluents, characterized by several dissolved compounds and solid-suspended organic components.
Primary effluents are interesting liquid wastes, they are urban wastewater treated by physical treatments as screening, crushing, sand-trap, oil extraction and primary sedimentation in wastewater treatment plants. These wastes contain mixture of pollutants as surfactant and dangerous organic compounds (such as aldehydes, organic halogen and aromatic compounds) and have a high bacterial load. These wastes contain also structural components (such as lignin, humic acid etc.) and nutrients. Unlike the secondary and tertiary effluents, which undergo to biological and chemical-physical oxidative processes, the primary effluents could be consider for a reuse as fertilizers in agricultural industry and as an alternative water resource.
The aim of the process is to efficiently degrade biologic contaminants and dangerous pollutants present in wastewater and at the same time to preserve water structural and nutritional contents, useful for carbon, nitrogen and phosphorus reintegration in the water-ground system. If these objectives are reached, wastewater can be reuse in agro-industrial sector.

 

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