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公开(公告)号：US20170198314A1
公开(公告)日：2017-07-13
申请号：US15313584
申请日：2015-05-22
申请人： Paques I.P. B.V.
发明人： Hendrik DIJKMAN , Yang JIANG , Jelmer TAMIS , Leonie MARANG , Robbert KLEEREBEZEM , Marinus Cornelis Maria VAN LOOSDRECHT
CPC分类号： C12P7/625 , C02F3/121 , C02F3/1221 , C02F3/1263 , C02F3/34 , C02F2203/004 , Y02W10/15
摘要： The invention relates to a process for producing a microbial storage compound, in particular polyhydroxyalkanoate, using micro-organisms capable of accumulating such microbial storage compound,wherein such micro-organisms are selected and the microbial storage compound is accumulated by carrying out the so-called feast phase of the selection step and the accumulation of the microbial storage compound in selected micro-organisms in the same reactor and carrying out the so-called famine phase of the selection step in a separate, smaller, reactor.
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公开(公告)号：US20190225519A1
公开(公告)日：2019-07-25
申请号：US16317451
申请日：2017-07-14
申请人： PAQUES I.P. B.V.
发明人： Hendrik DIJKMAN
摘要： Wastewater containing a significant level of dissolved readily biodegradable organic compounds matter, such as short-chain fatty acids, and ammonia can be efficiently treated to remove most or all of the organic compounds and the ammonia, with the production of microbial storage compounds such as polyhydroxylkanoates, by (i) subjecting the wastewater storage compound-accumulating microorganisms (SCAM) in the presence of oxygen, (ii) subjecting at least part of the resulting partly treated wastewater to ammonia-oxidising microorganisms (AOM) in the presence of oxygen and (iii) feeding a gas containing molecular carbon dioxide produced during step (ii) to step (i) so as to lower the pH in step (i).
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公开(公告)号：US20160215310A1
公开(公告)日：2016-07-28
申请号：US15024485
申请日：2014-09-26
申请人： PAQUES I.P. B.V.
CPC分类号： C12P11/00 , B01D53/1425 , B01D53/1493 , B01D53/18 , C01B17/05 , C01B17/06 , C02F3/223 , C02F3/301 , C02F3/345 , C02F2101/101 , Y02W10/15
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20240207785A1
公开(公告)日：2024-06-27
申请号：US18390290
申请日：2023-12-20
申请人： Paques I.P. B.V.
发明人： Johannes Bernardus Maria KLOK , Dhaval MEHTA , Hendrik DIJKMAN , Annemerel Rozemarijn MOL , Renata Dorothea VAN DER WEIJDEN , Cees Jan Nico BUISMAN
IPC分类号： B01D53/84 , B01D53/14 , B01D53/18 , B01D53/52 , B01D53/78 , B01D53/96 , C01B17/02 , C02F3/34 , C02F101/10 , C02F103/18 , C12P3/00
CPC分类号： B01D53/84 , B01D53/1425 , B01D53/1462 , B01D53/18 , B01D53/526 , B01D53/78 , B01D53/96 , C01B17/0205 , C02F3/345 , C12P3/00 , B01D2251/304 , B01D2251/306 , B01D2251/606 , C02F2101/101 , C02F2103/18
摘要： The invention is directed to a process to continuously treat a hydrogen sulphide comprising gas, said process comprising the following steps:
(a) contacting the hydrogen sulphide comprising gas with an aqueous alkaline liquid comprising sulphide-oxidising bacteria and elemental sulphur particles thereby producing a loaded aqueous liquid comprising dissolved sulphide, polysulphide compounds, sulphide-oxidising bacteria and elemental sulphur particles and a gas having a lower content of hydrogen sulphide, and passing the loaded aqueous liquid through a polysulphide reactor zone comprising one or more plug flow reactor zones,
(b) contacting the loaded aqueous liquid with an oxidant to enable the sulphide-oxidising bacteria to oxidise sulphide to elemental sulphur, thereby producing an enriched aqueous liquid comprising an increased amount of elemental sulphur particles and
(c) separating elemental sulphur particles from the enriched aqueous liquid, wherein the residence time of the loaded aqueous liquid between its preparation in step (a) and its supply to step (b) is between 3 and 45 minutes, and wherein the content of elemental sulphur as part of the polysulphide compounds in the loaded aqueous liquid [S0 in Sx2−] as supplied to step (b) is above 0.7 mM.-
公开(公告)号：US20180363013A1
公开(公告)日：2018-12-20
申请号：US15780407
申请日：2016-12-02
申请人： Paques I.P. B.V.
发明人： Hendrik DIJKMAN
摘要： High levels of polyhydroxyalkanoates (PHA) can be produced from wastewater comprising Readily Biodegradable COD (RBCOD) using activated sludge comprising microorganisms capable of accumulating PHA by contacting the wastewater with the activated sludge in the presence of dissolved oxygen during a first period of time, to obtain PHA-loaded activated sludge, and then supplying elements essential for growth such as nitrogen and phosphorus and allowing up-take of these elements and limited growth during a second period of time, the supplied amount of at least of one of said essential elements compared to the amount of RBCOD supplied in step a) limiting the growth to an extent that not all PHA is used for growth, to obtain grown activated sludge; and removing or harvesting part of the PHA-loaded activated sludge and/or part of the grown activated sludge, so that the total average retention time of the sludge is less than 72 h.
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