公开(公告)号：US20200048126A1

公开(公告)日：2020-02-13

申请号：US16339920

申请日：2017-10-06

Applicant: KEMIRA OYJ

Inventor： Mehrdad HESAMPOUR ,  Roderick ABINET ,  Marjatta PIIRONEN ,  Eija KORTE ,  liris JOENSUU

IPC: C02F9/00 ,  B01D65/02 ,  B01D65/08 ,  C02F1/28 ,  C02F1/24 ,  C02F1/44 ,  C02F1/52

Abstract: In a water treatment system, a pretreatment chemical is added to water stream in a pretreatment process including a coagulation, flocculation and separation to reduce amount of dissolved and/or particulate matter in the water stream. Hydrophobic conditions in the water stream are monitored upstream or downstream from adding the pretreatment chemicals. Dosing of the pretreatment chemical to the water stream is controlled based on the monitored hydrophobic conditions. Thereby a membrane fouling in subsequent membrane filtration stage can be minimized.

公开(公告)号：US20190002304A1

公开(公告)日：2019-01-03

申请号：US16065515

申请日：2016-12-21

Applicant: KEMIRA OYJ

Inventor： Marjatta PIIRONEN ,  Iiris JOENSUU ,  Mehrdad HESAMPOUR ,  Jaakko EKMAN

IPC: C02F1/00 ,  C02F1/44 ,  C02F1/52 ,  G01N21/85 ,  G01N21/64 ,  G01N21/94 ,  G06K9/20 ,  G06K9/62

Abstract: A method and apparatus for monitoring deposit formation in a process having an aqueous flow is provided. According to exemplary embodiments, a feed flow of an aqueous liquid is provided onto a receiving surface to be monitored. At least part of a receiving surface is illuminated with at least one light source. Visual data is collected across the receiving surface and analyzed. The quality and type of deposition attached to the receiving surface is classified based on information obtained from the analyzed visual data, and a quantitative scaling and/or fouling indication is computed based on the classification.

公开(公告)号：US20240092668A1

公开(公告)日：2024-03-21

申请号：US18527492

申请日：2023-12-04

Applicant: KEMIRA OYJ

Inventor： Mehrdad HESAMPOUR ,  Roderick ABINET ,  Marjatta PIIRONEN ,  Eija KORTE ,  Iiris JOENSUU

IPC: C02F9/00 ,  B01D65/02 ,  B01D65/08 ,  C02F1/24 ,  C02F1/28 ,  C02F1/44 ,  C02F1/52

CPC classification number: C02F9/00 ,  B01D65/02 ,  B01D65/08 ,  C02F1/24 ,  C02F1/281 ,  C02F1/44 ,  C02F1/5209 ,  C02F2103/32

Abstract: In a water treatment system, a pretreatment chemical is added to water stream in a pretreatment process including a coagulation, flocculation and separation to reduce amount of dissolved and/or particulate matter in the water stream. Hydrophobic conditions in the water stream are monitored upstream or downstream from adding the pretreatment chemicals. Dosing of the pretreatment chemical to the water stream is controlled based on the monitored hydrophobic conditions. Thereby a membrane fouling in subsequent membrane filtration stage can be minimized.

公开(公告)号：US20220397527A1

公开(公告)日：2022-12-15

申请号：US17755563

申请日：2020-12-04

Applicant: Kemira Oyj

Inventor： Vesa NUUTINEN ,  Erkki Johannes METSÄLÄ ,  Vesa VUORI ,  Mehrdad HESAMPOUR

IPC: G01N21/64 ,  C09K11/06 ,  C08F234/02 ,  C08F224/00 ,  G01N33/18 ,  C02F1/00 ,  C02F5/10

Abstract: Systems and methods for monitoring and/or controlling anti-scalant concentration. The systems may include components that form an automated control loop. The methods may be online methods that allow the concentration of an anti-scalant to be monitors in a fluid treatment system, such as a water treatment system.

公开(公告)号：US20230114878A1

公开(公告)日：2023-04-13

申请号：US17755564

申请日：2020-12-04

Applicant: Kemira Oyj

Inventor： Vesa NUUTINEN ,  Erkki Johannes METSÄLÄ ,  Reijo AKSELA ,  Vesa VUORI ,  Mehrdad HESAMPOUR

IPC: C08F224/00 ,  C07D493/10 ,  C07D311/82

Abstract: Tagging agents, including fluorescent monomers, which may be polymerized. Anti-scalant polymer compositions that include a copolymer of a tagging agent and an anti-scalant monomer. Methods for synthesizing tagging agents, anti-scalant polymer compositions, and detecting an anti-scalant polymer composition.

公开(公告)号：US20220332612A1

公开(公告)日：2022-10-20

申请号：US17737545

申请日：2022-05-05

Applicant: KEMIRA OYJ

Inventor： Iris PORAT ,  Miguel PELAEZ ,  Mehrdad HESAMPOUR ,  Yuping LUO ,  William MORRIS ,  Luciana BAVA

IPC: C02F1/68

Abstract: The present embodiments generally relate to the treatment of produced water comprising one or more water soluble polymers, wherein such treatment comprises: adding to the produced water at least one iron complex; and degrading at least a portion of the one or more water soluble polymers. This treatment may result in a reduction of the viscosity of said produced water and/or the degradation of the water soluble polymers which are contained therein.

公开(公告)号：US20220249992A1

公开(公告)日：2022-08-11

申请号：US17617224

申请日：2020-06-05

Applicant: KEMIRA OYJ

Inventor： Mehrdad HESAMPOUR ,  Matias PENTTINEN

IPC: B01D37/02 ,  C08F112/14 ,  B01J20/26 ,  C02F11/147 ,  C02F11/121

Abstract: Disclosed are filter aids for use in industrial processes such as metal ore beneficiation dewatering and filtering processes, paper and pulp dewatering processes and sludge dewatering in municipal waste treatment. The filter aid provides increased filtering efficiency, and reduced filter cake moisture levels.

公开(公告)号：US20220185706A1

公开(公告)日：2022-06-16

申请号：US17600888

申请日：2020-04-01

Applicant: KEMIRA OYJ

Inventor： Mehrdad HESAMPOUR ,  Anne MÄKI

IPC: C02F1/44 ,  G06T7/00 ,  G01N21/64

Abstract: A method is disclosed for monitoring deposit formation in an aqueous process. The method includes providing a feed flow of aqueous liquid onto a receiving surface of a monitoring cell. At least part of the receiving surface is illuminated with a light source. Visual data is collected at a multitude of positions across the receiving surface, and the collected visual data is analysed. A quantitative scaling and/or fouling indication is computed for the receiving surface. The monitoring cell has an inlet for the aqueous feed flow and an outlet for a reject flow from the monitoring cell. The receiving surface includes a selective barrier membrane. The feed flow is directed to the receiving surface at an elevated pressure to produce a permeate part that passes through the selective barrier membrane, and a concentrate part that forms the reject flow.

公开(公告)号：US20200024166A1

公开(公告)日：2020-01-23

申请号：US16489828

申请日：2018-03-06

Applicant: KEMIRA OYJ

Inventor： Iris PORAT ,  Miguel PELAEZ ,  Mehrdad HESAMPOUR ,  Yuping LUO ,  William MORRIS ,  Luciana BAVA

IPC: C02F1/68

Abstract: The present embodiments generally relate to the treatment of produced water comprising one or more water soluble polymers, wherein such treatment comprises: adding to the produced water at least one iron complex; and degrading at least a portion of the one or more water soluble polymers. This treatment may result in a reduction of the viscosity of said produced water and/or the degradation of the water soluble polymers which are contained therein.

公开(公告)号：US20180268972A1

公开(公告)日：2018-09-20

申请号：US15762888

申请日：2016-09-21

Applicant: Kemira Oyj

Inventor： Mehrdad HESAMPOUR ,  Lasse KYLLÖNEN ,  Ari AUVINEN ,  Adina ANGHELESCU-HAKALA

IPC: H01F1/44 ,  B22F1/00 ,  B22F1/02 ,  B01D61/00 ,  C02F1/44 ,  C08F292/00 ,  C09D4/00

Abstract: The present disclosure relates to a method for manufacturing a covalently functionalized coated magnetic nanoparticle and to said particles and uses thereof. The preparation method includes forming a shell of a hydrophilic polymer coating layer on top of a magnetic metal core coated with a carbon coating. In the method a particle comprising a magnetic metal core coated with a carbon coating is provided. The surface of the particle is subjected to covalent functionalization by generating amino reactive groups via diazonium chemistry and subsequently an irreversible attachment of an atom transfer radical polymerization (ATRP) initiator is carried out on said surface. A hydrophilic polymer layer is formed) by a surface initiated atom transfer radical polymerization (SI-ATRP) reaction with a monomer comprising N-isopropylacrylamide (NIPAM).