公开(公告)号：US11046590B2

公开(公告)日：2021-06-29

申请号：US16065515

申请日：2016-12-22

Applicant: KEMIRA OYJ

Inventor： Marjatta Piironen ,  Iiris Joensuu ,  Mehrdad Hesampour ,  Jaakko Ekman

IPC: C02F1/00 ,  G01N21/64 ,  G01N21/85 ,  G01N21/94 ,  C02F1/44 ,  C02F1/52 ,  G06K9/20 ,  G01N17/00 ,  C12M1/34 ,  G06K9/03 ,  C12M1/00 ,  G06K9/62 ,  C02F103/02 ,  C02F103/10 ,  C02F103/28 ,  C02F103/08

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：US10988392B2

公开(公告)日：2021-04-27

申请号：US16088749

申请日：2017-03-31

Applicant: KEMIRA OYJ

Inventor： Marjatta Piironen ,  Iiris Joensuu ,  Mehrdad Hesampour

IPC: C02F1/52 ,  C02F1/24 ,  C02F1/44 ,  C02F1/56 ,  G01N15/02 ,  G01N15/06 ,  G01N33/18 ,  G05B11/32 ,  C02F1/00

Abstract: Methods and systems are disclosed for optimization of coagulation and/or flocculation in a water treatment process. According to exemplary embodiments, samples are taken from an aqueous liquid and the samples are monitored with an imaging device to capture visual data of particles dispersed or suspended in the liquid. The particles are classified into particle types based on the visual data and a particle size distribution indication is computed for each classified particle type. The particle size distribution indication is then compared to a predetermined particle size distribution value, and in response to a difference detected, dosage of at least one coagulation and/or flocculation agent in the water treatment process can be adjusted.

公开(公告)号：US20200223719A1

公开(公告)日：2020-07-16

申请号：US16088749

申请日：2017-03-31

Applicant: KEMIRA OYJ

Inventor： Marjatta Piironen ,  Iiris Joensuu ,  Mehrdad Hesampour

IPC: C02F1/52 ,  G05B11/32 ,  C02F1/44 ,  C02F1/24 ,  C02F1/56 ,  G01N15/02 ,  G01N15/06 ,  G01N33/18

Abstract: Methods and systems are disclosed for optimization of coagulation and/or flocculation in a water treatment process. According to exemplary embodiments, samples are taken from an aqueous liquid and the samples are monitored with an imaging device to capture visual data of particles dispersed or suspended in the liquid. The particles are classified into particle types based on the visual data and a particle size distribution indication is computed for each classified particle type. The particle size distribution indication is then compared to a predetermined particle size distribution value, and in response to a difference detected, dosage of at least one coagulation and/or flocculation agent in the water treatment process can be adjusted.

公开(公告)号：US09989476B2

公开(公告)日：2018-06-05

申请号：US15038483

申请日：2014-11-18

Applicant: Kemira Oyj

Inventor： Lari Vähäsalo ,  Iiris Joensuu ,  Marjatta Piironen

IPC: G01N21/85 ,  B03B7/00 ,  C09B67/32 ,  G01N21/27 ,  G01N21/59 ,  G01N21/82 ,  G01N31/22 ,  G01N33/18 ,  D21H23/08 ,  G01N15/06 ,  G01N21/31 ,  G01N33/34 ,  G01N21/78 ,  D21H23/78 ,  C09B21/00 ,  G01N15/00 ,  C02F1/52 ,  G01N21/83 ,  G01N21/84 ,  G01N27/447 ,  G01N21/77

CPC classification number: G01N21/85 ,  B03B7/00 ,  C02F1/5209 ,  C09B21/00 ,  C09B67/0075 ,  D21H23/08 ,  D21H23/78 ,  G01N15/06 ,  G01N21/274 ,  G01N21/314 ,  G01N21/59 ,  G01N21/78 ,  G01N21/82 ,  G01N21/83 ,  G01N27/447 ,  G01N31/22 ,  G01N33/182 ,  G01N33/343 ,  G01N2015/0053 ,  G01N2015/0092 ,  G01N2015/0693 ,  G01N2021/3155 ,  G01N2021/7783 ,  G01N2021/8411 ,  G01N2021/8416 ,  G01N2021/8557 ,  G01N2201/127 ,  G01N2201/129

Abstract: The present invention concerns a method of optical measurement of an aqueous stream, and of processing the results of the measurement in order to determine the anionic charge of the stream, the method being carried out by measuring the light absorption of the stream and predicting the amount of anionic groups in the stream using a mathematical processing, such as mathematical calculations. Particularly, the method includes the steps of adding an amount of a cationic dye to the aqueous stream, measuring the light absorption spectra of the obtained dye-containing stream, and processing the obtained light absorption spectrum using said mathematical processing in order to obtain the anionic charge. The invention also concerns the use of the obtained spectrum in determining the turbidity of the stream, as well as a device suitable for use in carrying out the method.

公开(公告)号：US12044607B2

公开(公告)日：2024-07-23

申请号：US17418510

申请日：2019-12-20

Applicant: KEMIRA OYJ

Inventor： Iiris Joensuu ,  Marjatta Piironen ,  Andy Bergeron ,  Travis Bjerketvedt

IPC: G01N15/06 ,  G01N15/075 ,  G01N33/34

CPC classification number: G01N15/06 ,  G01N33/343 ,  G01N15/075

Abstract: A sample of an aqueous stream is conducted to an optical measurement device. A hydrophobic dye is added. The sample is fractionated into fractions according to particle size or mass. Fluorescence intensity values and light scattering intensity values for the fractions are measured. Fluorescence intensity values of the fractions are added together thus obtaining a sum of the fluorescence intensity values. Light scattering intensity values of the fractions are added together, thus obtaining a sum of the light scattering intensity values. A hydro-phobicity density of the particles in the sample, is calculated by dividing the sum of the fluorescence intensity values with the sum of the light scattering intensity values. A concentration of hydrophobic contaminants in the aqueous stream is monitored and controlled based on the calculated hydrophobicity density of the particles in the sample.

公开(公告)号：US11866356B2

公开(公告)日：2024-01-09

申请号：US16339920

申请日：2017-10-06

Applicant: KEMIRA OYJ

Inventor： Mehrdad Hesampour ,  Roderick Abinet ,  Marjatta Piironen ,  Eija Korte ,  Iiris Joensuu

IPC: B01D65/02 ,  B01D65/08 ,  C02F1/24 ,  C02F1/52 ,  C02F1/28 ,  C02F1/44 ,  C02F9/00 ,  C02F103/10 ,  C02F103/28 ,  C02F103/32 ,  C02F103/36 ,  C02F103/02

CPC classification number: C02F9/00 ,  B01D65/02 ,  B01D65/08 ,  C02F1/24 ,  C02F1/281 ,  C02F1/44 ,  C02F1/5209 ,  C02F2103/02 ,  C02F2103/10 ,  C02F2103/32 ,  C02F2103/365 ,  C02F2209/001 ,  C02F2209/003 ,  C02F2209/11

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：US12202756B2

公开(公告)日：2025-01-21

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: B01D65/08 ,  B01D65/02 ,  C02F1/24 ,  C02F1/28 ,  C02F1/44 ,  C02F1/52 ,  C02F9/00 ,  C02F103/02 ,  C02F103/10 ,  C02F103/28 ,  C02F103/32 ,  C02F103/36

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：US11859347B2

公开(公告)日：2024-01-02

申请号：US16770627

申请日：2018-12-07

Applicant: Kemira Oyj

Inventor： Marko Kolari ,  Marjatta Piironen ,  Iiris Joensuu

IPC: D21H21/36 ,  D21B1/34 ,  D21C9/00 ,  D21D5/28 ,  D21G9/00 ,  D21H21/02 ,  G01N33/34 ,  D21B1/32

CPC classification number: D21H21/36 ,  D21B1/32 ,  D21B1/345 ,  D21C9/008 ,  D21D5/28 ,  D21G9/0018 ,  D21H21/02 ,  G01N33/343

Abstract: A method is disclosed for predicting the microbial status of a paper or board making process and/or quality of the dry board or paper obtained from the process for controlling microbial status of a paper or board making process or quality of the dry board or paper obtained from the process. Surface level and duration of time in at least one storage tower or pulper are monitored and correlated with respective predetermined values for the tower or pulper in order to predict the risk of microbial activity.

公开(公告)号：US20140343872A1

公开(公告)日：2014-11-20

申请号：US14362135

申请日：2012-11-30

Applicant: Kemira Oyj

Inventor： Pekka Ilmola ,  Kaj Jansson ,  Iiris Joensuu ,  Marjatta Piironen

IPC: G01N33/18

CPC classification number: G01N33/1826 ,  G01N33/1806 ,  G01N33/343 ,  G01N33/48735

Abstract: The present invention concerns a method of estimating and optionally controlling the microbiological state in a process stream of an industrial process by measuring the concentration of dissolved oxygen or the rH value, or both, in said stream, the method including continuous or periodic sampling and online measurement. The invention also concerns a device suitable for use in implementing said method.

Abstract translation: 本发明涉及通过在所述流中测量溶解氧或rH值或两者的浓度来估计和任选地控制工业过程的工艺流中的微生物状态的方法，所述方法包括连续或定期取样和在线 测量。 本发明还涉及适用于实现所述方法的装置。

公开(公告)号：US12174612B2

公开(公告)日：2024-12-24

申请号：US17621086

申请日：2020-06-17

Applicant: KEMIRA OYJ

Inventor： Iiris Joensuu ,  Marjatta Piironen

IPC: G05B19/4155 ,  D21G9/00 ,  G01N21/64 ,  G01N33/34

Abstract: Estimating or predicting runnability or end product quality risk level for a pulp or papermaking process is disclosed. The method includes measuring hydrophobicity values of samples originating from a same aqueous process stream. A hydrophobicity measurement signal is produced of measured hydrophobicity values as a function of time. A risk level is calculated for the process. At least one mathematical index is calculated based on the hydrophobicity measurement signal, and optionally based on the amount of particles in the sample, other property of the aqueous stream and/or production data. The mathematical index and optionally the amount of the particles, other property, and/or production data is used as a risk indicator input in the calculation. Based on the risk level calculated for the pulp or papermaking process, the runnability and/or end product quality risk level for the pulp or papermaking process is indicated.