DE642419C - De-watering, de-ironing, de-manganese, desalination and de-acidification of service and drinking water - Google Patents

De-watering, de-ironing, de-manganese, desalination and de-acidification of service and drinking water

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Publication number
DE642419C
DE642419C DER87407D DER0087407D DE642419C DE 642419 C DE642419 C DE 642419C DE R87407 D DER87407 D DE R87407D DE R0087407 D DER0087407 D DE R0087407D DE 642419 C DE642419 C DE 642419C
Authority
DE
Germany
Prior art keywords
ironing
desalination
drinking water
acidification
watering
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
DER87407D
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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.)
KASPAR RUEGG DIPL ING
Original Assignee
KASPAR RUEGG DIPL ING
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 KASPAR RUEGG DIPL ING filed Critical KASPAR RUEGG DIPL ING
Priority to DER87407D priority Critical patent/DE642419C/en
Application granted granted Critical
Publication of DE642419C publication Critical patent/DE642419C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/58Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62Heavy metal compounds
    • C02F1/64Heavy metal compounds of iron or manganese
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Description

Bekanntlich entsteht ein sehr reines und stark aktives Tonerdehydrogel dadurch,- daß man aktiviertes Aluminium auf destilliertes Wasser einwirken läßt; mit einem solchen Tonerdehydrogel gelingt es beispielsweise, Rohwasser bis auf o° zu enthärten. Selbst Wässer mit reiner Gipshärte lassen sich mittels dieses besonderen Tonerdehydrats enthärten, das jedoch in möglichst frischem Zustände verwendet werden muß. Läßt man frisch bereitetes, aus aktiviertem Aluminium entstandenes Al(OH)3 einige Zeit stehen, so nimmt seine Wirksamkeit im Enthärtungsvorgang rasch- ab, um nach wenigen Tagen praktisch zu verschwinden. Es wurde nun gefunden, daß in dieser Beziehung ein Fortschritt zu erzielen ist, wenn nicht das aus aktiviertem Aluminium erzeugte Aluminiumhydroxyd als solches Verwendung' findet, sondern in einem Zustand, in welchem es Säuren adsorptiv gebunden enthält, und zwar solche Säuren, die mit dem Calcium- oder Magnesiumion eine Fällung ergeben. Bringt man z. B. aus aktiviertem Aluminium frisch bereiteten Aluminiumhydroxydschlamm mit einer . geringen Menge an Mononatriumphosphatlösung zusammen, die bekanntlich sauer reagiert und an sich nicht enthärtend wirkt, so wird so viel Phosphorsäure vom Aluminiumhydroxydschlamm festgehalten, daß die überstehende Flüssigkeit basische Reaktion aufweist. Trennt man den Schlamm von der •Flüssigkeit und wässert ihn, so erzielt man ein Tonerdehydrat, das Phosphorsäure in solcher Bindung enthält, daß sie ohne weiteres nicht mehr nachweisbar ist. Mit destilliertem Wasser verrührt liefert der so Vorbehandelte Aluminiumhydroxydschlamm eine haltbare trübe Flüssigkeit.As is well known, a very pure and highly active alumina hydrogel is produced by allowing activated aluminum to act on distilled water; With such an alumina hydrogel it is possible, for example, to soften raw water down to 0 °. Even water with pure plaster hardness can be softened using this special alumina hydrate, which must, however, be used in as fresh a condition as possible. If freshly prepared Al (OH) 3 formed from activated aluminum is left to stand for some time, its effectiveness in the softening process decreases rapidly and practically disappears after a few days. It has now been found that progress can be achieved in this respect if the aluminum hydroxide produced from activated aluminum is not used as such, but in a state in which it contains acids bound by adsorption, namely those acids which are bound with the Calcium or magnesium ions result in a precipitate. If you bring z. B. from activated aluminum freshly prepared aluminum hydroxide sludge with a. small amount of monosodium phosphate solution together, which is known to have an acidic reaction and does not in itself have a softening effect, so much phosphoric acid is retained by the aluminum hydroxide sludge that the supernatant liquid exhibits a basic reaction. If the sludge is separated from the liquid and watered, an alumina hydrate is obtained which contains phosphoric acid in such a bond that it is no longer readily detectable. When mixed with distilled water, the pretreated aluminum hydroxide sludge produces a durable, cloudy liquid.

Gewöhnliches Aluminiumhydroxyd (vgl. schweizer. Patentschrift 141039) zeigt dieses Verhalten nicht.Ordinary aluminum hydroxide (cf. Swiss patent specification 141039) shows this Behavior not.

Behandelt man Rohwasser mit einem solchen erfindungsgemäß hergestellten Tonerdehydratschlamm, so setzen die vorhandenen Calcium- und Magnesiumionen sich mit der adsorbierten Phosphorsäure um und bilden eine Fällung, während die dadurch frei werdenden Säuren vom Aluminiumhydroxydschlamm adsorbiert werden, sofern in dem System toner deadsorbierte Phosphorsäure nicht schon das Adsorptionsmaximum erreicht' war. Die freie Säure läßt sich in diesem Falle durch Zugabe von unbehandeltem Aluminiumhydroxyd adsorptiv entfernen. Für den Zweck, aus aktiviertem Aluminium gewonnenes Äluminiumhydroxyd zum Säureaustausch geeignet zu machen, lassen sich nicht allein lösliche saure Phosphate verwenden, sondern auch andere Phosphate, außerdem Silikate und Oxalate sowie die stark verdünnten. Lösungen der entsprechenden Säuren. Nach der Benutzung läßt sich der Aluminiumhydroxydschlamm durch erneutes Behandeln mit einer Lösung der angegebenen Salze bzw. Säuren wieder verwendbar machen. Läßt man den mit Salzen oder Säuren behandelten Aluminiumhydroxydschlamm an der LuftIf raw water is treated with such an alumina hydrate sludge prepared according to the invention, the calcium and magnesium ions present react with the adsorbed phosphoric acid and form a precipitation, while the thereby released acids from the aluminum hydroxide sludge are adsorbed, provided that phosphoric acid is deadsorbed in the system toner the adsorption maximum was not already reached. The free acid can be found in this Remove trap adsorptively by adding untreated aluminum hydroxide. For the purpose extracted from activated aluminum To make aluminum hydroxide suitable for acid exchange can be Not only use soluble acidic phosphates but other phosphates as well, as well Silicates and oxalates as well as the heavily diluted ones. Solutions of the corresponding acids. After use, the aluminum hydroxide sludge can be treated again Can be made reusable with a solution of the specified salts or acids. Leaves the aluminum hydroxide sludge treated with salts or acids is left in the air

trocknen, so erhält man ein haltbares Pulver, das jederzeit zur Enthärtung und Entsalzung von Wasser benutzt werden kann, wobei es nicht dosiert zu werden braucht, da durch ein; Übermaß daran nichts Lösliches in das Wasser hineingebracht wird.dry, you get a durable powder that can be softened and desalinated at any time of water can be used, whereby it does not need to be dosed, because by a; Too much, nothing soluble is brought into the water.

BeispieleExamples

ι. 15 1 Berliner Leitungswasser (d. H. 11 °)ι. 15 1 Berlin tap water (i.e. 11 °)

ίο wurden mit 500 ecm aus 15 g aktiviertem Al gewonnenem A1(OH)3-Schlamm verrührt,ίο were mixed with 500 ecm A1 (OH) 3 sludge obtained from 15 g activated Al,

der vorher mit 500 ecm einer —n-Na H2 PO4-previously with 500 ecm of a —n-Na H 2 PO 4 -

Lösung versetzt, filtriert und darauffolgend gewässert worden war. Nach 2 Minuten betrug die Härte des Wassers nur noch 2,5°, nach 24 Stunden betrug die Härte 20.Solution, filtered and then rinsed. After 2 minutes the hardness of the water was only 2.5 °, after 24 hours the hardness was 20 .

2. 10 1 Rohwasser (d. H. ii°, reine Gipshärte) wurden mit 350 ecm auf gleiche Weise gewonnenen Schlammes versetzt und 150 ecm frisches Tonerdehydrat hinzugegeben. Es wird eine Härte von o° erzielt.2. 10 1 raw water (i.e. ii °, pure plaster hardness) were mixed with 350 ecm of sludge obtained in the same way and 150 ecm fresh alumina hydrate added. A hardness of o ° is achieved.

3. 10 1 Rohwasser (ii° d. H.) wurden mit g an der Luft getrocknetem Tonerdehydratpulver angerührt, das aus adsorptiv mit Phosphorsäure beladenem, aus aktiviertem Aluminium hergestellten Aluminiumhydroxyd ,(fa-rch Trocknen an der Luft gewonnen worden war; nach ί Minute betrug die Härte 2,5° d. H., nach 24 Stunden betrug die Härte 2°.3. 10 1 raw water (ii ° d. H.) were with g of air-dried alumina hydrate powder, which is made from adsorptively loaded with phosphoric acid, from activated Aluminum-made aluminum hydroxide, (obtained by drying in the air was; after ί minute the hardness was 2.5 ° d. H., after 24 hours the Hardness 2 °.

Claims (1)

Patentanspruch:Claim: Enthärten, Enteisenen, Entmanganeri, Entsalzen und Entsäuern von Gebrauchsund Trinkwasser mittels aus aktiviertem Aluminium hergestellten Tonerdehydrats, dadurch gekennzeichnet, daß man ein aus aktiviertem Aluminium hergestelltes Aluminiumhydroxyd verwendet, das einer Vorbehandlung mit Lösungen von Phosphorsäure, Kieselsäure, Oxalsäure oder deren Salzen unterzogen ist.Softening, de-ironing, demanganeri, desalination and deacidification of utility materials Drinking water using alumina hydrate made from activated aluminum, characterized in that an aluminum hydroxide produced from activated aluminum used that a pretreatment with solutions of phosphoric acid, silicic acid, or oxalic acid whose salts is subjected.
DER87407D 1933-03-03 1933-03-03 De-watering, de-ironing, de-manganese, desalination and de-acidification of service and drinking water Expired DE642419C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER87407D DE642419C (en) 1933-03-03 1933-03-03 De-watering, de-ironing, de-manganese, desalination and de-acidification of service and drinking water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER87407D DE642419C (en) 1933-03-03 1933-03-03 De-watering, de-ironing, de-manganese, desalination and de-acidification of service and drinking water

Publications (1)

Publication Number Publication Date
DE642419C true DE642419C (en) 1937-06-17

Family

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Family Applications (1)

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DER87407D Expired DE642419C (en) 1933-03-03 1933-03-03 De-watering, de-ironing, de-manganese, desalination and de-acidification of service and drinking water

Country Status (1)

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DE (1) DE642419C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4009082A1 (en) * 1990-03-21 1991-09-26 Aquamot Ag METHOD FOR CLEANING INDUSTRIAL, AGRICULTURAL, OR PRIVATE WASTEWATER FROM YOUR AMMONIUM COMPOUNDS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4009082A1 (en) * 1990-03-21 1991-09-26 Aquamot Ag METHOD FOR CLEANING INDUSTRIAL, AGRICULTURAL, OR PRIVATE WASTEWATER FROM YOUR AMMONIUM COMPOUNDS

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