PROCESS AND DEVICE FOR ELECTROCHEMICAL TREATMENT OF INDUSTRIAL WASTEWATER AND DRINKING WATER

摘要

Subject matter of the invention is the procedure and plant for industrial wastewater and/or drinking water treatment by means of electrochemical methods and advanced oxidation processes. The preparatory phase of gravitational sedimentation is followed by main treatment consisting of electrocoagulation, electrooxidation and electroflotation through action of metal electrode sets made of inox, steel and aluminium respectively, with parallel disinfection/oxidation with ozone, UV irradiation and ultrasonic treatment, as well as recirculation in the electromagnetic field. At the end of the main treatment, the mixture of floccule and water is subject to coagulation/flocculation by electrochemically generated steel and aluminium floccule with slow infusion of ozone. The next phase is separation of sediment from clean water which is discharged through sand and activated charcoal filters for the purpose of removal of light floating floccule in the collection tank. If required, the water is subject to oxidation with simultaneous action of UV irradiation and ozone for the purpose of final destruction of organic matter and ammonia, and potential residues of microbiological contamination.

主权项

1. Procedure for electrochemical treatment and separation of heavy metals from industrial wastewater and drinking water, indicating that it consists of: (a) preparatory phase of contaminated medium by sedimentation; (b) reaction phase in the first reactor vessel where contaminated medium is treated by passage of direct current through the reactor electrode made of fixed inox plates performing electrocoagulation, electrooxidation, electroflotation and disinfection of the medium by circulation of ozone and UV radiation, with parallel circulation and electromagnetic and ultrasonic treatment; (c) reaction phase in the second reactor vessel where contaminated medium is treated by passage of direct current through reactor electrode set made of fixed steel plates, followed by passage through additional reactor electrode set made of fixed aluminium plates performing electrocoagulation, electrooxidation, electroflotation and disinfection of the medium by circulation of ozone and UV irradiation, with parallel circulation and electromagnetic and ultrasonic treatment; (d) coagulation and flocculation phase; (e) separation phase by sedimentation; (f) advanced oxidation phase with simultaneous ozonation and ultraviolet irradiation treatment; (g) filtering phase through sand and activated carbon filters.