DE872478C - Process for the treatment of raw water - Google Patents

Process for the treatment of raw water

Info

Publication number
DE872478C
DE872478C DEF3058D DEF0003058D DE872478C DE 872478 C DE872478 C DE 872478C DE F3058 D DEF3058 D DE F3058D DE F0003058 D DEF0003058 D DE F0003058D DE 872478 C DE872478 C DE 872478C
Authority
DE
Germany
Prior art keywords
hardness
raw water
treatment
water
lime
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEF3058D
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German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
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
Application filed by Bayer AG filed Critical Bayer AG
Priority to DEF3058D priority Critical patent/DE872478C/en
Application granted granted Critical
Publication of DE872478C publication Critical patent/DE872478C/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J41/00Anion exchange; Use of material as anion exchangers; Treatment of material for improving the anion exchange properties

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Removal Of Specific Substances (AREA)

Description

Verfahren zur Aufbereitung von Rohwasser Bei der Aufbereitung von Rohwasser ist es bekannt, die Härtebildner durch Behandlung mit Natriumionenaustauschern zu entfernen, wobei an Stelle der Kalk- und Magnesiumsalze die entsprechenden Alkaliverbindungen entstehen. Bei der Herstellung eines Kesselspeisewanssers, insbesondere für Hochdruckanlagen, werden jedoch besondere Anforderungen hinsichtlich eines möglichst geringen Salzgehaltes gestellt, so daß es üblich ist, in derartigen Fällen eine Entsalzung durchzuführen, indem man z. B. das Rohwasser über Wasserstoff- und Hydroxylinonenaustauscher führt. Bei derartigen Aufbereitungsverfahren benötigt man als Regeneriermittel für die Austanscher Säuren und Laugen.Process for the treatment of raw water When treating raw water it is known to increase the hardness builders by treatment with sodium ion exchangers Remove the corresponding alkali compounds instead of the lime and magnesium salts develop. When producing a boiler feed water, especially for high pressure systems, however, there are special requirements with regard to the lowest possible salt content so that it is customary to carry out desalination in such cases, by z. B. leads the raw water via hydrogen and hydroxylinon exchangers. In such treatment processes you need as a regenerant for the Exchangers acids and bases.

Es wurde nun gefunden, daß man eine weitgehende Entsalzung des Rohwassers vorteilhaft in der Weise durchführen kann, daß man das Wasser nach Zugabe von Kohlensäure über einen Hydroxylionenaustauscher filtriert und die dabei gebildeten Bicarbonate der Härtebildner durch Zugabe von Kalk od. dgl. in an sich bekannter Weise, vorteilhaft in der Hitze, entfernt. Die Hauptmenge der freien Kohlensäure kann dabei vor der Kalkzugabe durch eine thermische oder Vakuumentgasung gegebenenfalls ausgetrieben werden.It has now been found that extensive desalination of the raw water can be achieved can be carried out advantageously in such a way that the water after adding carbonic acid filtered through a hydroxyl ion exchanger and the bicarbonates formed the hardness constituents by adding lime or the like in a manner known per se, advantageous in the heat, removed. The main amount of free carbon dioxide can be before the Lime addition, if necessary, expelled by thermal or vacuum degassing will.

Mit dem Verfahren gemäß der Erfindung kann gleichzeitig auch einen Entkieselung verbunden werden., wenn man mit dem Kalk z. B. feinkörniges gefälltes Magnesiumoxyd oder eine natürliche Mischung solcher Stoffe, wie gebrannten Dolomit, zuführt.With the method according to the invention can also be one at the same time Desilification are connected. If you work with the lime z. B. fine-grained precipitated Magnesium oxide or a natural mixture of such substances as burnt dolomite, feeds.

Bei der beschriebenen Arbeitsweise gelingt die Entfernung der Hauptmenge der Härtebildner und der daran ursprünglich gebundenen Säureanionen, wie SO1 und Cl, Eine Nachbehandlung des Wassers mit Ionenaustauschern zwecks einer Restenthärtung oder Restentsalzung bzw. einer PH-Regulierung kann in an sich bekanter Weise angeschlossen werden.With the procedure described, the removal of the main amount succeeds the hardness component and the acid anions originally bound to it, how SO1 and Cl, An aftertreatment of the water with ion exchangers for the purpose of a residual softening or residual desalination or a pH regulation can be connected in a manner known per se will.

B e i s p i e l 1 Bitterfelder Trinkwasser Carbonathärte ............ 2,5° d. H.Example 1 Bitterfeld drinking water carbonate hardness ............ 2.5 ° d. H.

Nichtcarbonathärte........ 12,5° -Gesamthärte .............. 15,0° -Cl ....................... 35 mg/l SO3 ...................... 150 -Salzgehalt ............... 382 -nach bekannten Verfahren aufgearbeitet : Ätznatron-Soda Neutralaustausch 0,8° d. H. Resthärte 0,06° d. H.Non-carbonate hardness ........ 12.5 ° - total hardness .............. 15.0 ° -Cl ....................... 35 mg / l SO3 .................... .. 150 -salt content ............... 382 - worked up according to known methods: caustic soda-soda neutral exchange 0.8 ° d. H. residual hardness 0.06 ° d. H.

100 mg/l Na2CO3 -30 - NaOH -35 - cl 35 mg/l 150 - SO3 150 -427 - Salzgehalt 399 -Nach der Erfindung aufgearbeitet: ohne mit Nachenthärtung nachenthärtung 0,8° d. H. Resthärte 0,06° d. H.100 mg / l Na2CO3 -30 - NaOH -35 - cl 35 mg / l 150 - SO3 150 -427 - salinity 399 - Refurbished according to the invention: without with post-softening post-softening 0.8 ° d. H. residual hardness 0.06 ° d. H.

5 mg/l Cl 5 mg/l 0 - SO3 0 -20 - Salzgehalt 22 -B e i s p i e l 2 Muldewasser Carbonathärte ............. 2,0° d. H.5 mg / l Cl 5 mg / l 0 - SO3 0 -20 - salinity 22 - e i s p i e l 2 Trough water carbonate hardness ............. 2.0 ° d. H.

Nichtcarbonathärte ........ 5,0° -Gesamthärte ............... 7,0° -Cl ........................ 35 mg/l SO3 ....................... 60 -Salzgehalt ................ 221 -Nach bekannten Verfahren aufgearbietet: Ätznatron-Soda neutralaustausch 0,8° d. H. Resthjrte 0,06° d. H.Non-carbonate hardness ........ 5.0 ° - Total hardness ............... 7.0 ° -Cl ........................ 35 mg / l SO3 ................... .... 60 salinity ................ 221 -According to known methods: Caustic soda-soda neutral exchange 0.8 ° d. H. residual half-time 0.06 ° d. H.

94 mg/l Na2CO3 -30 NaOH -35 - Cl 35 mg/l 60 - SO3 60 -358 - Salzgehalt 226 -Nach der Erfindung aufgearbeitet: ohne mit Nachenthärtung Nachenthärtung 0,805 d. H. Resthärte 0,06° d. H.94 mg / l Na2CO3 -30 NaOH -35 - Cl 35 mg / l 60 - SO3 60 -358 - salinity 226 - Refurbished according to the invention: without with post-softening post-softening 0.805 d. H. residual hardness 0.06 ° d. H.

5 mg/l Cl 5 mg/l 0 - SO3 0 -35 - Salzgehalt 37 -B e i s p i e l 3 Brunnenwasser Carbonathärte ............ 15° d. H.5 mg / l Cl 5 mg / l 0 - SO3 0 -35 - salinity 37 - e i s p i e l 3 Well water carbonate hardness ............ 15 ° d. H.

Nichtcarbonathärte ....... 15° -Gesamthärte .............. 30° -Cl ....................... 20 mg/l SO3 ...................... 250 -Salzgehalt ............... 616 -Nach bekannten Verfahren aufgearbeitet: Neutralaustausch Kalk-Soda Neutral- Wasserstoffaustausch austausch Resthärte 0,8° d. H. 0,06° d. H. 0,06° d. H.Non-carbonate hardness ....... 15 ° total hardness .............. 30 ° -Cl ....................... 20 mg / l SO3 ...................... 250 -salt content ............... 616 - Reconditioned according to known methods: neutral exchange lime-soda neutral- Hydrogen exchange exchange residual hardness 0.8 ° d. H. 0.06 ° d. H. 0.06 ° d. H.

Na2CO3 100 mg/l - -NaOH 8 - - -Cl 20 - 20 mg/l 20 mg/l SO3 250 - 250 - 250 -Salzgehalt 589 - 649 - 482 -Nach der Erfindung aufgearbeitet: ohne mit Nachenthärtung Nachenthärtung 0,8° d. H. resthärte 0,06° d. H.Na2CO3 100 mg / l - -NaOH 8 - - -Cl 20 - 20 mg / l 20 mg / l SO3 250 - 250 - 250 - Salt content 589 - 649 - 482 - Refurbished according to the invention: without with subsequent softening Post-softening 0.8 ° d. H. residual hardness 0.06 ° d. H.

Claims (2)

10 mg/l Cl 10 mg/l 0 - SO3 0 -64 - Salzgehalt 66 -PATENTANSPRÜCHE 1. Verfahren zur Aufbereitung von Rohwasser, dadurch gekennzeichnet, daß man das Wasser nach Zugabe von Kohlensäure über einen Hydroxylionenaustauscher filtriert und die gebildeten Bicarbonate der härtebildner durch Zusatz von Kalk od. dgl. in an sich bekannter Weise entfernt.10 mg / l Cl 10 mg / l 0 - SO3 0 -64 - salinity 66 - PATENT CLAIMS 1. A method for treating raw water, characterized in that the After adding carbonic acid, water is filtered through a hydroxyl ion exchanger and the bicarbonates formed by the hardeners od by adding lime. Like. In removed in a known manner. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man vor der Kalkzugabe die freie Kohlensäure durch Entgasung beseitigt.2. The method according to claim 1, characterized in that one is before the addition of lime removes the free carbon dioxide through degassing.
DEF3058D 1942-12-29 1942-12-29 Process for the treatment of raw water Expired DE872478C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF3058D DE872478C (en) 1942-12-29 1942-12-29 Process for the treatment of raw water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF3058D DE872478C (en) 1942-12-29 1942-12-29 Process for the treatment of raw water

Publications (1)

Publication Number Publication Date
DE872478C true DE872478C (en) 1953-04-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3309021A1 (en) * 1983-03-14 1984-09-20 Hana Dr. 5000 Köln Krizek Process and apparatus for treating water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3309021A1 (en) * 1983-03-14 1984-09-20 Hana Dr. 5000 Köln Krizek Process and apparatus for treating water

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