公开(公告)号：US20130220939A1

公开(公告)日：2013-08-29

申请号：US13757487

申请日：2013-02-01

Applicant: KEMIRA OYJ

Inventor： Greg Land ,  Roderick Abinet ,  David Soper

IPC: C02F1/58

CPC classification number: C02F1/58 ,  C02F1/008 ,  C02F1/5245 ,  C02F2209/001 ,  C02F2209/003 ,  C02F2209/005 ,  C02F2209/02 ,  C02F2209/06 ,  C02F2209/08 ,  C02F2209/265 ,  C02F2209/40 ,  C02F2303/02 ,  C02F2307/08

Abstract: The invention concerns a method of controlling addition rate of an odor control chemical to a wastewater line comprising means for adding odor control chemical to the wastewater. The method comprises measuring a level of dissolved sulfides in the wastewater line using a sulfide probe placed in said wastewater line, transferring data on the level of dissolved sulfides to a computing unit, determining a required odor control chemical addition rate in said computing unit based on said level of dissolved sulfides, and instructing the means for adding odor control chemical to add the odor control chemical at said required addition rate. The invention allows for accurate on-line control of the level of H2S in the wastewater line.

Abstract translation: 本发明涉及一种控制气味控制化学品对废水管线的添加速率的方法，包括用于向废水中加入气味控制化学品的装置。 该方法包括使用放置在所述废水管线中的硫化物探针测量废水管线中的溶解硫化物的水平，将溶解硫化物水平的数据传送到计算单元，基于以下步骤确定所述计算单元中所需的气味控制化学添加速率 表示溶解的硫化物水平，并指示添加气味控制化学品的方法，以所需的添加速率加入气味控制化学品。 本发明允许精确的在线控制废水管线中的硫化氢水平。

公开(公告)号：US20170275192A1

公开(公告)日：2017-09-28

申请号：US15508600

申请日：2015-09-03

Applicant: Kemira Oyj

Inventor： Roderick Abinet

IPC: C02F3/30 ,  C01B21/22 ,  C01B21/02 ,  C02F1/70 ,  C02F3/00

CPC classification number: C02F3/303 ,  C01B13/0203 ,  C01B21/02 ,  C01B21/22 ,  C02F1/70 ,  C02F1/705 ,  C02F3/006 ,  C02F2101/16 ,  C02F2101/166 ,  C02F2209/06 ,  C02F2303/10 ,  Y02W10/15 ,  Y02W10/30

Abstract: The invention relates to a method for nitrogen removal from aqueous medium, comprising steps of (a) converting NH4+ in the aqueous medium to NO2− by partial aerobic nitrification, (b) partially reducing the obtained NO2− to N2O in anoxic conditions, and (c) decomposing N2O to N2 with energy recovery. A mixture of ferrous sulfate and ferric sulfate is used in step (b) for reduction of NO2− to N2O.

公开(公告)号：US20150246834A1

公开(公告)日：2015-09-03

申请号：US14194834

申请日：2014-03-03

Applicant: Kemira Oyj

Inventor： Roderick Abinet ,  Greg Land ,  David Soper

IPC: C02F1/62 ,  C02F1/00

CPC classification number: C02F1/688 ,  C02F1/5245 ,  C02F2101/22 ,  C02F2209/001 ,  C02F2209/11

Abstract: The invention describes a method and system for controlling the addition rate of a contaminant control chemical to a water or wastewater line. The level of hexavalent chromium as a contaminant in the water or wastewater is measured using a spectro-photometric probe placed in the line. Data representative of the level of measured hexavalent chromium content is read into a computing unit, which determines a required contaminant control chemical addition rate based on said level of hexavalent chromium content. The contaminant control chemical is then added at the required addition rate to reduce the amount of hexavalent chromium to a predetermined level.

Abstract translation: 本发明描述了一种用于控制污染物控制化学品对水或废水管线的添加速率的方法和系统。 在水或废水中作为污染物的六价铬的水平使用放置在管线中的分光光度探头来测量。 将测量的六价铬含量水平的数据表示为计算单位，其基于所述六价铬含量水平确定所需的污染物控制化学添加速率。 然后以所需的添加速率加入污染物控制化学品以将六价铬的量减少到预定水平。

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：US09815718B2

公开(公告)日：2017-11-14

申请号：US13757487

申请日：2013-02-01

Applicant: KEMIRA OYJ

Inventor： Greg Land ,  Roderick Abinet ,  David Soper

IPC: C02F1/58 ,  C02F1/00 ,  C02F1/52

CPC classification number: C02F1/58 ,  C02F1/008 ,  C02F1/5245 ,  C02F2209/001 ,  C02F2209/003 ,  C02F2209/005 ,  C02F2209/02 ,  C02F2209/06 ,  C02F2209/08 ,  C02F2209/265 ,  C02F2209/40 ,  C02F2303/02 ,  C02F2307/08

Abstract: A method of controlling addition rate of an odor control chemical to a wastewater line by adding odor control chemical to the wastewater. The method includes measuring a level of dissolved sulfides in the wastewater line using a sulfide probe placed in said wastewater line, transferring data on the level of dissolved sulfides to a computing unit, determining a required odor control chemical addition rate in said computing unit based on said level of dissolved sulfides, and adding the odor control chemical at said required addition rate. The method allows for accurate on-line control of the level of H2S in the wastewater line.

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：US11420887B2

公开(公告)日：2022-08-23

申请号：US15533519

申请日：2015-12-10

Applicant: KEMIRA OYJ

Inventor： Roderick Abinet ,  Greg Land ,  David Soper ,  Tafadzwa Mariga

IPC: C02F1/52

Abstract: Provided for example is a system and method for real-time monitoring or controlling wastewater or sludge dewatering or thickening processes. The system and method can also enable operators to remotely monitor their own system off-site.

公开(公告)号：US10167215B2

公开(公告)日：2019-01-01

申请号：US15508600

申请日：2015-09-03

Applicant: Kemira Oyj

Inventor： Roderick Abinet

IPC: C02F3/30 ,  C01B21/02 ,  C01B21/22 ,  C02F1/70 ,  C02F3/00 ,  C01B13/02 ,  C02F101/16

Abstract: The invention relates to a method for nitrogen removal from aqueous medium, comprising steps of (a) converting NH4+ in the aqueous medium to NO2− by partial aerobic nitrification, (b) partially reducing the obtained NO2− to N2O in anoxic conditions, and (c) decomposing N2O to N2 with energy recovery. A mixture of ferrous sulfate and ferric sulfate is used in step (b) for reduction of NO2− to N2O.