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：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：US20160202189A1

公开(公告)日：2016-07-14

申请号：US14914651

申请日：2014-08-26

Applicant: KEMIRA OYJ

Inventor： Eija Saari ,  Kaisa Karisalmi ,  Mehrdad Hesampour ,  Heli Virkki ,  Miia Niemelä ,  Eija Korte

IPC: G01N21/77 ,  G01N33/18 ,  G01N15/06

CPC classification number: G01N21/77 ,  C02F1/008 ,  C02F1/441 ,  C02F1/442 ,  C02F1/444 ,  C02F2209/06 ,  C02F2209/36 ,  G01N15/06 ,  G01N31/22 ,  G01N33/1826 ,  G01N2021/7786

Abstract: Method for detecting transparent exopolymer particles in a water sample. The method comprises step of obtaining a water sample and introducing a fluorochromatic reagent to the water sample. The fluorochromatic reagent is specific to vicinal hydroxide groups of transparent exopolymer particles, whereby the fluorescence signal of the reagent changes when it comes into contact with transparent exopolymer particles, i.e. TEP. Finally the fluorescence signal from the water sample is detected and the TEP level of the sample is determined.

Abstract translation: 检测水样中透明聚合物颗粒的方法。 该方法包括获得水样并将荧光染料引入水样的步骤。 荧光染料试剂对透明的聚合物颗粒的邻位氢氧基团是特异性的，由此当试剂与透明的聚合物颗粒即TEP接触时，其荧光信号变化。 最后检测来自水样的荧光信号，测定样品的TEP浓度。