公开(公告)号：US20160215310A1

公开(公告)日：2016-07-28

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 ,  B01D53/18 ,  B01D53/14

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-oxidising bacteria in the presence of oxygen in a reactor to oxidise sulphide to elemental sulphur. According to the process, a molecular-oxygen containing gas is supplied to a reactor containing the sulphide-oxidising 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.

Abstract translation: 公开了从包含硫化物的水溶液中除去硫化物的方法，其中水溶液在氧气存在下在反应器中经受硫化物氧化细菌以将硫化物氧化成元素硫。 根据该方法，将含分子氧的气体在水性介质中供应到含有硫化物 - 氧化细菌的反应器中，使得在水性介质中产生一个或多个充气区和一个或多个非充气区，向上 充气区内的液体流动和非充气区域中向下的液体流动; 并且包含硫化物的水溶液的进料流在一个或多个非充气区域中注入反应器，其中一个或多个充气区域不与一个或多个非充气区域分离， 通过垂直延伸的反应器内部。

公开(公告)号：US20210130208A1

公开(公告)日：2021-05-06

申请号：US17148426

申请日：2021-01-13

Applicant: Stora Enso OYJ ,  Paques I.P. B.V.

Inventor： Erik VAN ZESSEN ,  Michel Paulus Maria NOORDINK ,  Rickard WADSBORN ,  Olli TIMONEN ,  Maria BJÖRK ,  Ari KOTILAINEN

IPC: C02F3/34

Abstract: The present invention relates to a process for the controlling the sodium and sulfur levels in a pulp mill, comprising the steps of: a) providing a pulp mill stream comprising sulfide and having a total alkali concentration of at least 2 Molar; b) supplying a portion of the pulp mill stream to a reactor comprising sulfide oxidizing bacteria and removing sulfide from the pulp mill stream by subjecting said stream to sulfide oxidizing bacteria in the presence of oxygen, and at a pH in the range 8 to 11, to oxidize the sulfide to elemental sulfur, c) withdrawing from the reactor a treated pulp mill stream comprising sulfur, wherein the portion of the pulp mill stream is mixed with a portion of the sulfide oxidizing bacteria present in the reactor prior to supplying the pulp mill stream to the reactor in step b).

公开(公告)号：US20210130209A1

公开(公告)日：2021-05-06

申请号：US17148472

申请日：2021-01-13

Applicant: Stora Enso OYJ ,  Paques I.P. B.V.

Inventor： Erik VAN ZESSEN ,  Michel Paulus Maria NOORDINK ,  Rickard WADSBORN ,  Olli TIMONEN ,  Maria BJÖRK ,  Ari KOTILAINEN

IPC: C02F3/34

Abstract: The present invention relates to a process for the treatment of industrial alkaline streams comprising sulfide and carbonate, comprising the steps of: a) providing an industrial alkaline stream comprising sulfide and carbonate; b) supplying the industrial alkaline stream to a bioreactor comprising sulfide oxidizing bacteria and removing sulfide from the industrial alkaline stream by subjecting said stream to sulfide oxidizing bacteria in the presence of oxygen, and supplying a pH adjustment agent to the bioreactor to maintain a pH in the range in the range 8 to 11, to oxidize the sulfide to elemental sulfur, c) withdrawing from the bioreactor a treated industrial alkaline stream comprising elemental sulfur, wherein a portion of the sulfide oxidizing bacteria is removed from the bioreactor and mixed with the industrial alkaline stream prior to supplying the industrial alkaline stream to the bioreactor in step b).

公开(公告)号：US20150344326A1

公开(公告)日：2015-12-03

申请号：US14655045

申请日：2013-12-20

Applicant: PAQUES I.P. B.V.

Inventor： Petrus Cornelis VAN DER HEIJDEN ,  Jan Willem Albertus BRUINS ,  Jacco HUISMAN ,  Erik VAN ZESSEN

IPC: C02F1/20 ,  B01D19/00 ,  C02F3/28

CPC classification number: C02F1/20 ,  B01D19/0005 ,  B01D19/0063 ,  C02F3/28 ,  C02F3/2846 ,  C02F2101/101

Abstract: Hydrogen sulfide can be removed from a liquid effluent of an anaerobic reactor, by subsequently: —contacting the effluent liquid in counter current with a treated product gas of the anaerobic reactor to absorb hydrogen sulfide in the gas, —collecting the desulfurised effluent liquid after said contacting, —discharging at least part of the collected desulfurised effluent recirculation liquid as a treated effluent. To a remaining part of the desulfurised effluent waste water can be added and mixed, and the mixed water can be fed to the anaerobic reactor. Spent gas of the contacting step can be combined with sulfide-containing product gas of the anaerobic reactor and treated by desulfurisation.

Abstract translation: 硫化氢可以从厌氧反应器的液体流出物中除去，其随后是：将厌氧反应器的处理产物气体与对流的流体液体接触，以吸收气体中的硫化氢， - 在所述气体中吸收脱硫的流出液体 将至少部分收集的脱硫废水再循环液体接触，充放电作为经处理的流出物。 可以向剩余部分的脱硫废水中添加和混合，并将混合水进料到厌氧反应器中。 接触步骤的废气可以与厌氧反应器的含硫产物气体组合并通过脱硫处理。