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1. (WO2013116935) PROCESSES AND APPARATUSES FOR REMOVAL OF CARBON, PHOSPHORUS AND NITROGEN

Pub. No.:    WO/2013/116935    International Application No.:    PCT/CA2013/000113
Publication Date: Fri Aug 16 01:59:59 CEST 2013 International Filing Date: Sat Feb 09 00:59:59 CET 2013
IPC: C02F 1/46
C02F 1/48
C02F 3/12
Applicants: VALORBEC S.E.C.
UNIVERSITY OF MANITOBA
Inventors: IBEID, Sharif
ELEKTOROWICZ, Maria
OLESZKIEWICZ, Jan
Title: PROCESSES AND APPARATUSES FOR REMOVAL OF CARBON, PHOSPHORUS AND NITROGEN
Abstract:
There are provided processes for treating wastewater. The processes can comprise treating a mixture comprising the wastewater and an activated sludge, in a single reactor, with an electric current having a density of less than about 55 A/m2, by means of at least one anode and at least one cathode that define therebetween an electrical zone for treating the mixture; exposing the mixture to an intermittent ON/OFF electrical exposure mode to the electric current in which an OFF period of time is about 1 to about 10 times longer than an ON period of time; and maintaining an adequate oxidation-reduction potential in the single reactor. Such processes allow for substantial removal of carbon, nitrogen and phosphorus from the wastewater in the single reactor of various forms and for obtaining another mixture comprising a treated wastewater and solids.