公开(公告)号：US11772985B2

公开(公告)日：2023-10-03

申请号：US17186849

申请日：2021-02-26

Applicant: Grundfos Holding A/S

Inventor： Mette Lægdsmand ,  Nicolai Bæk Thomsen ,  Alexander Engels Ryming

IPC: C02F1/00 ,  G06N3/08 ,  C02F1/68 ,  C02F101/10

CPC classification number: C02F1/008 ,  G06N3/08 ,  C02F1/68 ,  C02F2101/101 ,  C02F2209/006

Abstract: A computer implemented method and a system abates the presence of sulphide (H2S(g), H2S(aq) or HS-(aq)) in a wastewater flowing in a specific wastewater network from an upstream pumping pit to a downstream pumping pit or manhole. The computer implemented method and a system includes dosing into the wastewater at a position upstream of the downstream pit or manhole a chemical for abatement of sulphide, determining by use of a sensor the concentration of sulphide at a position downstream of the position at which chemical is dosed into the wastewater, such as located in the downstream manhole. The amount of chemical dosed is determined by use of a general agent and a specific agent.