DE1517713A1 - Flotation process for the clarification of gas cleaning water and other industrial waste water using macromolecular flocculants - Google Patents

Flotation process for the clarification of gas cleaning water and other industrial waste water using macromolecular flocculants

Info

Publication number
DE1517713A1
DE1517713A1 DE19661517713 DE1517713A DE1517713A1 DE 1517713 A1 DE1517713 A1 DE 1517713A1 DE 19661517713 DE19661517713 DE 19661517713 DE 1517713 A DE1517713 A DE 1517713A DE 1517713 A1 DE1517713 A1 DE 1517713A1
Authority
DE
Germany
Prior art keywords
clarification
gas cleaning
macromolecular
water
flotation process
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.)
Pending
Application number
DE19661517713
Other languages
German (de)
Inventor
Kreller Dipl-Ing Fritz
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.)
Siteg Siebtechnik GmbH
Original Assignee
Siteg Siebtechnik GmbH
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 Siteg Siebtechnik GmbH filed Critical Siteg Siebtechnik GmbH
Publication of DE1517713A1 publication Critical patent/DE1517713A1/en
Pending legal-status Critical Current

Links

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
    • C02F1/24Treatment of water, waste water, or sewage by flotation

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)
  • Physical Water Treatments (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Description

Flotationsverfahren zur Klärung von Gasreinigungswasser und sonstigen industriellen Abwässern mittels makromolekularer Flockungsmittel Bekanntlich werden makromolekulare Flockungsmittel, wie Polyacrylamide, Polyäthylenoxyde u.a. - bekannt unter den handelsüblichen Namen Praestol, Separan, Sedipur u.ä.-zur Flockung feiner Teilchen in Trübesuspensionen eingesetzt, um eine rasche Sedimentation und damit schnelle Klärung der Trüben bzw. auch eine Eindickung des Feststoffes zu bewirken. In der Flotation von Erzen und Nichterzen, insbesondere von Kohle sind diese Flockungsmittel unerwünscht, da ihre Gegenwart den Flotationsverlauf nachteilig beeinflussen kann, indem sowohl die Qualität des ausflotierten Nutzmineralkonzentrates als auch das Ausbringen an Nutzmineral beeinträchtigt werden.Flotation process for the clarification of gas cleaning water and others industrial wastewater by means of macromolecular flocculants become known macromolecular flocculants such as polyacrylamides, polyethylene oxides and others - are known under the commercial names Praestol, Separan, Sedipur and the like - for flocculation finer Particles in turbid suspensions used to cause rapid sedimentation and thus to bring about rapid clarification of the turbidity or a thickening of the solid. In the flotation of ores and non-ores, especially coal, these are flocculants undesirable, as their presence can adversely affect the course of flotation, by both the quality of the beneficial mineral concentrate and the Spreading of useful mineral are impaired.

Für die vollkommene Abscheidung des Feststoffes, wie sie bei der Abwasserklärung angestrebt und verlangt wird, ist der Gesichtspunkt einer qualitativen Anreicherung nicht gegeben, sondern es muss der gesamte Feststoff soweit wie möglich erfasst und flotiert werden. Da dieser Feststoff vielfach in feinster Verteilung vor. einigen Micron Korngrösse und dazu in zumeist geringer Konzentration in der Trübe vorliegt, ist seine Flotation mit den in der Aufbereitung von Erzen und Nichterzen gebräuchlichen Schwimmitteln allein nicht befriedigend möglich.For the complete separation of the solids, as is the case with wastewater treatment aspired and required is the aspect of a qualitative enrichment not given, but the entire solid matter must be captured as much as possible and be floated. Because this solid is often in the finest distribution. some Micron grain size and mostly in low concentration in the pulp, is its flotation with those used in the processing of ores and non-ores Floating alone is not possible in a satisfactory manner.

Es wurde nun gefunden, dass in solchen Fällen durch Anwendung der vorstehend gerannten makromolekularen Flockunga-j mittel, besonders in Verbindung mit bekannten Schwimmitteln bei gleichzeitiger Zugabe von beiden in die Plotationszelle eine ao weitgehende Flotation des äestetoffes erreicht wird, dass ein trinkwaeserklare,Blüasigkeiteab$ug erzielt wird. Zur Verdeutlichung werden die Ergebnisse von drei Versuchen an-Gasreinigungswasser, das 3 g/dm3 Feststoff enthielt, wiedergegeben. Die Versuche wurden in einer Wemco-Flotationszelle von 2,6 dm3 Inhalt durchgeführt.It has now been found that in such cases, by using the macromolecular flocculation agents mentioned above, especially in connection with known floatation agents with the simultaneous addition of both to the plot cell, an extensive flotation of the esthetic substance is achieved that a drinkable water-clear, bubblyness ab $ ug is achieved . For the sake of clarity, the results of three experiments on gas cleaning water containing 3 g / dm3 of solids are shown. The tests were carried out in a Wemco flotation cell with a capacity of 2.6 dm3.

Im ersten Versuch wurde die Flotation nur mit einem Kondensationsmischprodukt von Phenolen und Alkoholen als Sammler-Schäumer vorgenommen. Im zweiten Versuch wurde ausser diesem Sammler-Schäumer ein makromolekulares Plockungsmittel zugesetzt. Und in einem dritten Versuch wurde nur das Plockungsmittel angewendet.In the first attempt, the flotation was only with a condensation mixed product made of phenols and alcohols as collector frothers. In the second attempt In addition to this collector foamer, a macromolecular blocking agent was added. And in a third attempt, only the locking agent was used.

In Versuch 1 blieb nach einer bestimmten Flotationszeit, nach der ein Aufschwimmen von Feststoff nicht mehr bewirkt werden konnte, die Trübe dunkel gefärbt und enthielt an Feststoff noch 0,3 g/dm3, der auch bei längerem Stehenlassen nach Zusatz von Flockungsmittel sich nicht vollende absetzte.In experiment 1, after a certain flotation time, after which the solids could no longer float, the sludge remained dark in color and still contained 0.3 g / dm3 of solids, which did not completely settle even after prolonged standing after the addition of flocculant .

In Versuch 2 und 3 dagegen war das geklärte Wasser trinkwaseerklar mit einzelnen Partikelehen, die rasch sedimentierten. Der Feststoffgehalt betrug in Versuch 2 o,o6 g/dm3 und in Versuch 3 o,o7 g/dm3. Der ausgeschwemmte Feststoff wurde in Versuch 1 von einem Schaum ausgetragen, der langsam zerfiel, während in Versuch 2 und 3 der Schaum sehr rasch zerfiel und sich durch schnelles Absinken des geflockten Feststoffes eine rasche Scheidung von Feststoff und dem im Schaumaustrag enthaltenen Wasser bemerkbar machte, die eine leichte Trennung dieses Feststoffes vom Konzentratwasser zulässt.In tests 2 and 3, on the other hand, the clarified water was clear as drinking water with individual particles that quickly sedimented. The solids content was in experiment 2 o, o6 g / dm3 and in experiment 3 o, o7 g / dm3. The flushed solid was discharged in experiment 1 by a foam that slowly disintegrated, while in Trials 2 and 3 the foam disintegrated very quickly and settled rapidly of the flocculated solids a rapid separation of solids and that in the foam discharge contained water made noticeable that a slight separation of this solid from the concentrate water.

Claims (2)

Schutzansprüche 1. Flotationsverfahren zur Klärung von Gasreinigungswasser und sonstigen industriellen Abwässern bei dem in Flotationszellen makromolekulare Flockungsmittel gemeinsam mit einem Sammler-Schäumer zum Aufschwimmen der Feststoffteilchen verwendet werden. Protection claims 1. Flotation process for the clarification of gas cleaning water and other industrial wastewater in the case of the macromolecular in flotation cells Flocculant together with a collector-foamer to float the solid particles be used. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass nur mit einem makromolekularen Flockungsmittel der Feststoff ausgeschwommen wird.2. The method according to claim 1, characterized in that only the solid is floated with a macromolecular flocculant.
DE19661517713 1966-10-26 1966-10-26 Flotation process for the clarification of gas cleaning water and other industrial waste water using macromolecular flocculants Pending DE1517713A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0106714 1966-10-26

Publications (1)

Publication Number Publication Date
DE1517713A1 true DE1517713A1 (en) 1969-06-12

Family

ID=7527619

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19661517713 Pending DE1517713A1 (en) 1966-10-26 1966-10-26 Flotation process for the clarification of gas cleaning water and other industrial waste water using macromolecular flocculants

Country Status (1)

Country Link
DE (1) DE1517713A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2464924A1 (en) * 1979-09-10 1981-03-20 Shinryo Air Cond PROCESS AND PLANT FOR THE CONCENTRATION OF SLUDGE
EP0237432A1 (en) * 1986-03-12 1987-09-16 Centre De Pyrolyse Du Charbon De Marienau ( C.P.M.) Process for ammoniacal waste water treatment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2464924A1 (en) * 1979-09-10 1981-03-20 Shinryo Air Cond PROCESS AND PLANT FOR THE CONCENTRATION OF SLUDGE
EP0237432A1 (en) * 1986-03-12 1987-09-16 Centre De Pyrolyse Du Charbon De Marienau ( C.P.M.) Process for ammoniacal waste water treatment
FR2595682A1 (en) * 1986-03-12 1987-09-18 Marienau Centre Pyrolise Charb METHOD OF TREATING AMMONIACAL WASTEWATER

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