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RU2000124900A - METHOD FOR PROCESSING TECHNOLOGICAL WATER - Google Patents

METHOD FOR PROCESSING TECHNOLOGICAL WATER

Info

Publication number
RU2000124900A
RU2000124900A RU2000124900/12A RU2000124900A RU2000124900A RU 2000124900 A RU2000124900 A RU 2000124900A RU 2000124900/12 A RU2000124900/12 A RU 2000124900/12A RU 2000124900 A RU2000124900 A RU 2000124900A RU 2000124900 A RU2000124900 A RU 2000124900A
Authority
RU
Russia
Prior art keywords
process water
preceding paragraphs
water
carbonate
added
Prior art date
Application number
RU2000124900/12A
Other languages
Russian (ru)
Other versions
RU2211190C2 (en
Inventor
Кристос РАМПОТАС
Вивека СВЕНССОН
Йонни ХАНССОН
Маргарета НИЛЬССОН
Original Assignee
Кемира Кеми Аб
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from SE9800645A external-priority patent/SE9800645D0/en
Priority claimed from SE9803384A external-priority patent/SE9803384L/en
Application filed by Кемира Кеми Аб filed Critical Кемира Кеми Аб
Publication of RU2000124900A publication Critical patent/RU2000124900A/en
Application granted granted Critical
Publication of RU2211190C2 publication Critical patent/RU2211190C2/en

Links

Claims (10)

1. Способ обработки технологической воды, содержащей ионы металлов в сочетании с отбеливанием лигноцеллюлозной пульпы, отличающийся следующими стадиями: a) регулирование содержания Мg2+ в технологической воде для получения флокуляционной основы для металлов и органического вещества, b) подача источника карбоната (10) в технологическую воду для осаждения кальция в виде карбоната кальция, c) повышение рН технологической воды посредством добавления белой жидкости (11) к осажденным соединениям металлов, таким как гидроксиды металлов, d) добавление флокулянта (12, 13) в технологическую воду и e) выделение осажденных флокулированных соединений металлов (16) из технологической воды (17) посредством флотации.1. A method of processing technological water containing metal ions in combination with lignocellulosic pulp bleaching, characterized by the following stages: a) regulation of Mg 2+ in the process water to obtain a flocculation base for metals and organic matter, b) supply of a carbonate source (10) process water for precipitating calcium in the form of calcium carbonate, c) increasing the pH of the process water by adding white liquid (11) to precipitated metal compounds, such as metal hydroxides, d) added flocculating (12, 13) into the process water; and e) separating precipitated flocculated metal compounds (16) from the process water (17) by flotation. 2. Способ по п. 1, отличающийся тем, что источник карбоната (10) в стадии b) выбран из группы, включающий не содержащий воду Na2СО3, Nа2СО3, кристаллизованный из зеленой жидкости, отфильтрованный осадок содержащий карбонат и полученный из порошка, который выделен из испарителя регенерации соды, и газ, содержащий диоксид углерода.2. The method according to p. 1, characterized in that the carbonate source (10) in step b) is selected from the group comprising water-free Na 2 CO 3 , Na 2 CO 3 , crystallized from a green liquid, a filtered precipitate containing carbonate and the resulting from a powder that is isolated from a soda recovery evaporator, and a gas containing carbon dioxide. 3. Способ по п. 1 или 2, отличающийся тем, что стадия d) включает сначала добавление соединения (12), выбранного из фенольной смолы, лигнин-производного, нафталинсульфоната и формальдегидного конденсата сульфонилдигидроксибензола, и затем добавление полимера (13). 3. The method according to p. 1 or 2, characterized in that stage d) comprises first adding a compound (12) selected from a phenolic resin, a lignin derivative, naphthalene sulfonate and a formaldehyde condensate of sulfonyl dihydroxybenzene, and then adding a polymer (13). 4. Способ по п. 3, отличающийся тем, что полиэтиленоксид и/или полиакриламид добавляют в качестве полимеров (13) на стадии d). 4. The method according to p. 3, characterized in that the polyethylene oxide and / or polyacrylamide are added as polymers (13) in stage d). 5. Способ по любому из предыдущих пунктов, отличающийся тем, что регулируют содержание Mg2+ до по меньшей мере 15 ppm на стадии а).5. A method according to any one of the preceding paragraphs, characterized in that the Mg 2+ content is controlled to at least 15 ppm in step a). 6. Способ по п. 5, отличающийся тем, что регулируют содержание Mg2+ посредством добавления MgSO4, MgCl2 и/или MgO (21).6. The method according to p. 5, characterized in that the Mg 2+ content is controlled by adding MgSO 4 , MgCl 2 and / or MgO (21). 7. Способ по любому из предыдущих пунктов, отличающийся тем, что добавляют в технологическую воду источник карбоната на стадии b) так, чтобы мольное отношение Na2CO3/Ca2+ составляло по меньшей мере 0,5.7. The method according to any one of the preceding paragraphs, characterized in that a carbonate source is added to the process water in step b) so that the molar ratio of Na 2 CO 3 / Ca 2+ is at least 0.5. 8. Способ по любому из предыдущих пунктов, отличающийся тем, что повышают рН технологической воды до 8-13, предпочтительно 10-11 на стадии с). 8. The method according to any one of the preceding paragraphs, characterized in that the pH of the process water is increased to 8-13, preferably 10-11 in step c). 9. Способ по любому из предыдущих пунктов, отличающийся тем, что осуществляют флотацию с помощью газа, присутствующего в технологической воде. 9. The method according to any one of the preceding paragraphs, characterized in that the flotation is carried out using gas present in the process water. 10. Способ по любому из предыдущих пунктов, отличающийся тем, что подают газ (18) в технологическую воду на стадии b). 10. A method according to any one of the preceding paragraphs, characterized in that the gas (18) is supplied to the process water in step b).
RU2000124900/12A 1998-03-02 1999-01-18 Process water treatment method RU2211190C2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE9800645A SE9800645D0 (en) 1998-03-02 1998-03-02 Process for treating process water
SE9800645-5 1998-03-02
SE9803384-8 1998-10-02
SE9803384A SE9803384L (en) 1998-03-02 1998-10-02 Process for treating process water

Publications (2)

Publication Number Publication Date
RU2000124900A true RU2000124900A (en) 2002-09-27
RU2211190C2 RU2211190C2 (en) 2003-08-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU2000124900/12A RU2211190C2 (en) 1998-03-02 1999-01-18 Process water treatment method

Country Status (15)

Country Link
US (1) US6290812B1 (en)
EP (1) EP1060306A1 (en)
JP (1) JP2002506134A (en)
KR (1) KR20010052194A (en)
CN (1) CN1137307C (en)
AU (1) AU734281B2 (en)
BR (1) BR9908430A (en)
CA (1) CA2322209A1 (en)
ID (1) ID26081A (en)
NO (1) NO20004187L (en)
NZ (1) NZ506516A (en)
PL (1) PL342616A1 (en)
RU (1) RU2211190C2 (en)
SE (1) SE9803384L (en)
WO (1) WO1999045192A1 (en)

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FI20011131A (en) * 2001-05-30 2002-12-01 Upm Kymmene Oyj Procedure for treating circulating water
FI117507B (en) * 2004-07-09 2006-11-15 Kemira Oyj Procedure for removing lignin from water
CN101128264B (en) * 2004-12-23 2013-05-29 佐治亚-太平洋化学有限责任公司 Modified amine-aldehyde resins and uses thereof in separation processes
MX2011010889A (en) * 2009-04-21 2011-11-02 Ecolab Usa Inc Catalytic water treatment method and apparatus.
JP5407994B2 (en) * 2009-08-11 2014-02-05 栗田工業株式会社 Water treatment method and water treatment flocculant
CN102108650B (en) * 2009-12-29 2013-11-20 李�昊 Zero-wastewater-emission pulping method
CN101935120B (en) * 2010-08-27 2011-12-28 陕西科技大学 Recycle method of pulping effluent of wheat straw chemi-mechanical pulp
CN102125785B (en) * 2010-12-14 2012-08-29 东北电力大学 Multifunctional combined type purification device
US9193610B2 (en) 2011-08-10 2015-11-24 Ecolab USA, Inc. Synergistic interaction of weak cation exchange resin and magnesium oxide
BR112014005055B1 (en) * 2011-09-05 2021-01-12 Stora Enso Oyj process for the treatment of hardwood black liquor and hardwood black liquor treated according to the process
FI127995B (en) * 2012-12-21 2019-07-15 Upm Kymmene Corp Waste water and flue gas utilization
CN104261606B (en) * 2014-09-23 2016-03-30 山东大学 A kind of method of solid alkali adsorption cleaning height strong brine
CN107694762B (en) * 2017-11-10 2019-07-02 中南大学 A kind of composition and method for floating of the flotation collecting rutile from ore
CN108911257A (en) * 2018-08-02 2018-11-30 马强 Papermaking enterprise Sewage treatment filter
JP6666509B1 (en) * 2019-08-02 2020-03-13 王子ホールディングス株式会社 Agglomeration inhibitor and aggregation suppression method
CN112340898B (en) * 2020-04-12 2022-08-12 浙江凯宝华新材料有限公司 Method for decoloring papermaking intermediate wastewater

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EP0564443A1 (en) * 1992-03-15 1993-10-06 Kamyr, Inc. Treatment of bleach plant filtrates
US5509999A (en) * 1993-03-24 1996-04-23 Kamyr, Inc. Treatment of bleach plant effluents
US5639347A (en) * 1993-03-24 1997-06-17 Ahlstrom Machinery Inc. Method of controlling of metals in a bleach plant, using oxidation
SE9301161L (en) * 1993-04-07 1994-10-08 Sunds Defibrator Ind Ab Process for treating process water
FI95608B (en) 1994-06-17 1995-11-15 Ahlstroem Oy Process for preparing coke liquor by crystallization of green liquor
SE504424C2 (en) * 1994-11-04 1997-02-10 Kvaerner Pulping Tech Ways to precipitate transition metals and alkaline earth metals from bleaching liquids by adding alkaline liquid
FI98226C (en) 1995-04-03 1997-05-12 Ahlstrom Machinery Oy Method for treating sodium carbonate
FR2860729B1 (en) 2003-10-10 2006-04-28 Salomon Sa RETAINING ELEMENT OF A SHOE ON A SLIDING OR ROLLING BOARD
DE102004006793A1 (en) 2004-02-12 2005-09-08 Contitech Antriebssysteme Gmbh Disengageable friction wheel tensioner

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