公开(公告)号：US11447409B2

公开(公告)日：2022-09-20

申请号：US16652190

申请日：2018-10-04

Applicant: Suez Groupe

Inventor： Marc Caligaris ,  Thibaut Saur ,  Irène Mozo

IPC: C02F3/30 ,  C02F3/00 ,  C02F3/12 ,  C02F101/16

Abstract: The invention relates to a method for the biological treatment of nitrogen in the form of ammonium in wastewater, by nitritation in a biological reactor, comprising: at least one step a of aerating the biological reactor containing the wastewater to be treated, at least one step b of eliminating at least part of the nitrites produced in step a, and a step c of extracting, from the reactor, a fraction of the sludge resulting from steps a and b. The invention also concerns a method for the biological treatment of nitrogen in wastewater, by nitritation/denitritation and/or deammonification, wherein the nitritation is implemented using the nitritation method according to the invention.

公开(公告)号：US11459251B2

公开(公告)日：2022-10-04

申请号：US16497270

申请日：2018-03-30

Applicant: SUEZ GROUPE

Inventor： Irène Mozo ,  Marc Caligaris

IPC: C02F3/00 ,  C02F3/12 ,  C02F3/30 ,  C02F101/16 ,  C02F101/30

Abstract: In the field of wastewater or effluent treatment, a method for treating wastewater includes a first step of treating carbon contained in the wastewater by means of oxygen, a second step of treating the nitrogen contained in the treated water at the end of the first step, a third step of determining a ratio between a concentration of carbon and a concentration of nitrogen in the water at the end of the first step, a fourth step of controlling the supply of oxygen necessary for the first step as a function of a difference between the determination carried out in the third step and a strictly positive setpoint of concentration ratio. A device implementing the method is also provided.

公开(公告)号：US20200299163A1

公开(公告)日：2020-09-24

申请号：US16652190

申请日：2018-10-04

Applicant: Suez Groupe

Inventor： Marc Caligaris ,  Thibaut Saur ,  Irène Mozo

IPC: C02F3/30 ,  C02F3/00 ,  C02F3/12

Abstract: The invention relates to a method for the biological treatment of nitrogen in the form of ammonium in wastewater, by nitritation in a biological reactor, comprising: at least one step a of aerating the biological reactor containing the wastewater to be treated, at least one step b of eliminating at least part of the nitrites produced in step a, and a step c of extracting, from the reactor, a fraction of the sludge resulting from steps a and b. The invention also concerns a method for the biological treatment of nitrogen in wastewater, by nitritation/denitritation and/or deammonification, wherein the nitritation is implemented using the nitritation method according to the invention.