公开(公告)号：US09944961B2

公开(公告)日：2018-04-17

申请号：US15024485

申请日：2014-09-26

Applicant: Paques I.P. B.V.

Inventor： Erik Van Zessen ,  Antonius Johannes Jorna ,  Sjoerd Hubertus Jozef Vellinga ,  Hendrik Dijkman

IPC: C12P11/00 ,  C01B17/05 ,  C01B17/06 ,  C02F3/30 ,  B01D53/14 ,  B01D53/18 ,  C02F3/22 ,  C02F3/34 ,  C02F101/10

CPC classification number: C12P11/00 ,  B01D53/1425 ,  B01D53/1493 ,  B01D53/18 ,  C01B17/05 ,  C01B17/06 ,  C02F3/223 ,  C02F3/301 ,  C02F3/345 ,  C02F2101/101 ,  Y02W10/15

Abstract: A process for removing sulphide from an aqueous solution comprising sulphide is disclosed, in which the aqueous solution is subjected to sulphide-oxidizing bacteria in the presence of oxygen in a reactor to oxidize sulphide to elemental sulphur. According to the process, a molecular-oxygen containing gas is supplied to a reactor containing the sulphide-oxidizing bacteria in an aqueous medium, such that one or more aerated zones and one or more non-aerated zones are created in the aqueous medium with upward liquid flow in the aerated zones and downward liquid flow in the non-aerated zones; and a feed stream of the aqueous solution comprising sulphide is injected into the reactor in the one or more non-aerated zones, wherein the one or more aerated zone(s) are not separated from the one or more non-aerated zone(s) by means of vertically extending reactor internal.