DE4302358A1 - Method and equipment for two-stages pressure discharge flotation in container - involves already cleaned water in two stages being sucked from second handling stage by dispersal pump with air or gas feed - Google Patents
Method and equipment for two-stages pressure discharge flotation in container - involves already cleaned water in two stages being sucked from second handling stage by dispersal pump with air or gas feedInfo
- Publication number
- DE4302358A1 DE4302358A1 DE19934302358 DE4302358A DE4302358A1 DE 4302358 A1 DE4302358 A1 DE 4302358A1 DE 19934302358 DE19934302358 DE 19934302358 DE 4302358 A DE4302358 A DE 4302358A DE 4302358 A1 DE4302358 A1 DE 4302358A1
- Authority
- DE
- Germany
- Prior art keywords
- water
- container
- pump
- air
- purified water
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1431—Dissolved air flotation machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1462—Discharge mechanisms for the froth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1493—Flotation machines with means for establishing a specified flow pattern
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/24—Pneumatic
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren und die Verfahrensanordnung zur zweistufigen Druckentspan nungsflotation in einem Behälter. The invention relates to a method and Process arrangement for two-stage pressure release flotation in a container.
Bei Druckentspannungsflotationsanlagen einstufiger Bauart werden aufgrund nicht vermeidbarer Turbu lenzen im Trennbehälter Mikroflocken auf das bereits gereinigte Wasser übertragen. Außerdem wird nicht verbrauchtes Spaltmittel durch erneute Energiezufuhr, wie z. B. Überlauf in eine Vorlage erneut aktiviert und neigt zur Nachflockung. Da diese Nachflockung und auch der Flockenüber trag aufgrund der Anforderungen an gereinigtes Ab wasser wie z. B. Messung absetzbarer Stoffe in mg/l nicht akzeptierbar ist, erscheint eine Nachfil trierung in den meisten Fällen notwendig. Es ist weiterhin bekannt, daß nachgeschaltete Filter aufgrund der Größe der Flocken, sowie deren amorpher Struktur entprechend fein und groß dimensioniert sein müssen, um eine entsprechende Abscheidung zu erreichen. Desweiteren ist bekannt, daß z. B. hierzu verwendete Kiesfilter entsprechend groß bauen und wegen der erforderlichen Rückspül ung eine entprechend aufwendige Steuerung und Verrohrung benötigen. Desweiteren ist bekannt, daß für die Rückspülung von Kiesfiltern bereits gereinigtes Wasser wieder verunreinigt wird.One-stage for pressure relief flotation systems Build due to unavoidable Turbu limit microflakes in the separation container to the transfer already purified water. Furthermore is not used up splitting agent by renewed Energy supply, such as B. Overflow into a template reactivated and tends to flocculate. Because this flocculation and also the flake over due to the requirements for cleaned ex water such as B. Measurement of removable substances in mg / l a post-film is not acceptable in most cases. It is also known that downstream Filters based on the size of the flakes, as well their amorphous structure is accordingly fine and large must be dimensioned to a corresponding To achieve deposition. Furthermore, it is known that z. B. used gravel filter accordingly build big and because of the required backwash a correspondingly complex control and Need piping. Furthermore, it is known that for backwashing gravel filters already purified water is contaminated again.
Der Erfindung liegt die Aufgabe zugrunde, die Nachfiltration auf physikalischem Wege, mittels Druckentspannungsflotation d. h. Luftbläschenan lagerung an übertragene Schwebstoffe und Flocken und deren Austrag durch Flotation aus der Wasser vorlage zu erreichen.The invention is based, which Post-filtration by physical means Pressure relaxation flotation d. H. Air bubbles storage on transferred suspended matter and flakes and their discharge by flotation from the water reach template.
Ebenso liegt der Erfindung die Aufgabe zugrunde für diesen Filtrationsvorgang keinen zusätzlichen Behälter und eine sehr geringe Funktionsmechanik ohne zusätzlichen Energie- und Wasseraufwand zu erreichen.The invention is also based on the object no additional for this filtration process Containers and a very low functional mechanics without additional energy and water expenditure to reach.
Diese Aufgabe wird durch eine gattungsmäßige Verfahrensanordnung durch die kennzeichnenden Merkmale des Anspruches 1 gelöst.This task is carried out by a generic Process arrangement by the characterizing Features of claim 1 solved.
Die mit der Erfindung erzielten Vorteile liegen darin, eine zweistufige Wasserbehandlung durch Druckentspannungsflotation in einem Behälter auszuführen.The advantages achieved with the invention are in going through a two-stage water treatment Pressure relaxation flotation in a container to execute.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird folgend näher be schrieben:An embodiment of the invention is in the Drawing shown and will be closer below wrote:
Wie in der Zeichnung dargestellt, wird bereits gereinigtes Wasser 1, von einer Dispergerpumpe 3, angesaugt, empfängt Luft 4, wird in einem Sätti gungsreaktor 5, unter Druck eingesättigt, entpannt in einer Wasserstrahlpumpe 6, wobei die Wirbelbildung benutzt wird Chemikalien 8, sowie zugefördertes Rohwasser 7, so zu vermischen, daß der entstehende Gesamtstrom in den Flockungsre aktor 11, einströmt und sich nach Austritt aus diesem im unteren Behälter 14, eine Trennung von aufschwimmenden ausgeflockten Wasserverunreini gungen und nach unten abgezogenem gereinigten Wasser einstellt, welches durch ein Absaugrohr 15, in den oberen Behälterteil 2, einläuft, während die aufsteigenden ausgeflockten Wasserverunreini gungen mittels Luft oder Gasbläschenanlagerung in einen nach oben offenen Verdichtungskegel 12, gelangen, der den unteren Behälterteil 14, vom oberen Behälterteil 2, abtrennt, woraus sie als vorverdichteter Schlamm aus dem Schlammablauf 13, auslaufen, indem das mit dem Schlammauslauf 13, kommunizierende Absaugrohr 15, periodisch mittels eines motorisch bewegten Verschlußstempels 16, geschlossen wird, gleichzeitig wird das Wasser niveau im oberen Behälterteil 2, das aus dem Behälter mit unterem Behälterteil 14 und dem ein gesetzten, gegen den unteren Behälterteil dichten Verdichtungskegel 12, mit Schlammablauf 13, gebildet wird, von dem Ablauf für gereinigtes Wasser 18, dem Zulauf aus dem Absaugrohr 15, und einem druckentspannten Dispergatstrom, der aus dem Sättigungsreaktor 5, eine Dispergatleitung 9, ein Entspannungsventil 10, und einen Dispergat verteiler 17, zufließt, gehalten, wobei sich das aus dem Absaugrohr 15, in den oberen Behälterteil 2, einlaufende gereinigte Wasser mit dem einströ menden Dispergatstrom aus dem Dispergatverteiler 17, derart vermischt, daß eine weitere Druckent spannungsflotation, die bewirkt, daß in den oberen Behälter übertragene Wasserverunreinigungen an die Wasseroberfläche getrieben werden und an einem Trennschott 19, anstauen, welches dem Ablauf für gereinigtes Wasser 18 und der Ansaugung für gereinigtes Wasser 1, so vorgeschaltet ist, daß das gereinigte Wasser unter dem Trennschott 19, durchfließen muß und periodisch das am Trenn schott anstauende Flotat, durch Niveauanhebung im oberen Behälter 2, mittels eines motorisch bewegten Verschlußstempels 20, der den Ablauf für gereinigtes Wasser 18, verschließt, in eine Flotatablaufrinne 21, einströmt und ablaufen kann.As shown in the drawing, already purified water 1 , sucked in by a disperger pump 3 , receives air 4 , is saturated in a saturation reactor 5 , saturated under pressure, relaxed in a water jet pump 6 , using the vortex formation, chemicals 8 , and supplied Raw water 7 , to mix so that the resulting total current flows into the flocculation reactor 11 and after exiting from it in the lower container 14 , a separation of floating flocculated water contaminations and adjusted downward cleaned water, which is set by a suction pipe 15 , in the upper container part 2 , while the rising flocculated water contaminations by means of air or gas bubbles accumulate in an upwardly open compression cone 12 , which separates the lower container part 14 , from the upper container part 2 , from which they come as pre-compressed sludge from the sludge outlet 13 , run out, ind em with the sludge spout 13 , communicating suction pipe 15 , periodically by means of a motor-driven closing plunger 16 , is closed, at the same time the water level in the upper container part 2 , which is sealed from the container with the lower container part 14 and the one against the lower container part Compression cone 12 , with sludge outlet 13 , is formed by the outlet for purified water 18 , the inlet from the suction pipe 15 , and a pressure-relieved disperse stream, which comes from the saturation reactor 5 , a dispersant line 9 , an expansion valve 10 , and a dispersant distributor 17 , inflows, kept, whereby from the suction pipe 15 , into the upper container part 2 , the purified water flowing in with the inflowing dispersant stream from the dispersant distributor 17 , is mixed in such a way that a further pressure relaxation flotation, which causes water contaminants transferred into the upper container to the water surface g be driven and accumulate at a separating bulkhead 19 , which is connected upstream of the outlet for purified water 18 and the suction for purified water 1 so that the cleaned water must flow through under the partition bulkhead 19 and periodically the flotate accumulating on the partition bulkhead Level increase in the upper container 2 , by means of a motor-driven closing plunger 20 , which closes the drain for purified water 18 , flows into a flotate drain channel 21 and can run off.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19934302358 DE4302358A1 (en) | 1993-01-28 | 1993-01-28 | Method and equipment for two-stages pressure discharge flotation in container - involves already cleaned water in two stages being sucked from second handling stage by dispersal pump with air or gas feed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19934302358 DE4302358A1 (en) | 1993-01-28 | 1993-01-28 | Method and equipment for two-stages pressure discharge flotation in container - involves already cleaned water in two stages being sucked from second handling stage by dispersal pump with air or gas feed |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4302358A1 true DE4302358A1 (en) | 1993-06-09 |
Family
ID=6479127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19934302358 Withdrawn DE4302358A1 (en) | 1993-01-28 | 1993-01-28 | Method and equipment for two-stages pressure discharge flotation in container - involves already cleaned water in two stages being sucked from second handling stage by dispersal pump with air or gas feed |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4302358A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0770428A1 (en) * | 1995-10-27 | 1997-05-02 | Antonio Caravaggio | Flotation plant with cyclic liquid volume variation |
WO2000012220A1 (en) * | 1998-08-31 | 2000-03-09 | Mazda Motor Corporation | Particle separating apparatus |
US7361282B2 (en) * | 2003-07-21 | 2008-04-22 | Smullin Corporation | Separator of floating components |
DE102008044888A1 (en) | 2008-08-29 | 2010-03-04 | Iwat Industrie-Wasser-Aufbereitungs-Technik Gmbh | Floatation system for waste water treatment has a two stage design with air bubbles fed into the rising duct for clear water and leading to the upper stage |
CN102247934A (en) * | 2011-07-04 | 2011-11-23 | 福建省龙岩龙能粉煤灰综合利用有限公司 | Self-air-supply type coal ash flotation process |
DE102011005031A1 (en) * | 2011-03-03 | 2012-09-06 | Siemens Aktiengesellschaft | Flotation device, method for operating the flotation device and their use |
CN113479961A (en) * | 2020-12-31 | 2021-10-08 | 无锡德林海环保科技股份有限公司 | Air floatation method and blue algae pressurization recycling treatment system thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3123423C2 (en) * | 1980-06-16 | 1986-09-25 | Agrotechnika, N.P., podnikové riaditelstvo, Altsohl/Zvolen | Device for the flotation separation of a suspension or emulsion from liquids |
DE3713439A1 (en) * | 1987-04-22 | 1988-11-03 | Ingolf Kurtze | Process and process arrangement for purifying water by controlled depressurisation flotation |
DE3717947C2 (en) * | 1987-05-27 | 1989-11-23 | Weiss, Rosemarie, 6208 Hettenhain, De | |
DE4014088A1 (en) * | 1990-05-02 | 1991-11-07 | Ingolf Kurtze | Saturating water with air or gas - by passing water through vessel contg. chamber from which part of water is circulated through centrifugal pump |
-
1993
- 1993-01-28 DE DE19934302358 patent/DE4302358A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3123423C2 (en) * | 1980-06-16 | 1986-09-25 | Agrotechnika, N.P., podnikové riaditelstvo, Altsohl/Zvolen | Device for the flotation separation of a suspension or emulsion from liquids |
DE3713439A1 (en) * | 1987-04-22 | 1988-11-03 | Ingolf Kurtze | Process and process arrangement for purifying water by controlled depressurisation flotation |
DE3717947C2 (en) * | 1987-05-27 | 1989-11-23 | Weiss, Rosemarie, 6208 Hettenhain, De | |
DE4014088A1 (en) * | 1990-05-02 | 1991-11-07 | Ingolf Kurtze | Saturating water with air or gas - by passing water through vessel contg. chamber from which part of water is circulated through centrifugal pump |
Non-Patent Citations (1)
Title |
---|
HANISCH, B.: Die wirtschaftliche Anwendung der Flotation mit sehr kleinen Luftblasen zur Reinigung von Abwasser, Kommissionsverlag R. Oldenbourg, München 1960, S. 31-32, 46, 49 * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0770428A1 (en) * | 1995-10-27 | 1997-05-02 | Antonio Caravaggio | Flotation plant with cyclic liquid volume variation |
WO2000012220A1 (en) * | 1998-08-31 | 2000-03-09 | Mazda Motor Corporation | Particle separating apparatus |
US6450344B1 (en) | 1998-08-31 | 2002-09-17 | Mazda Motor Corporation | Particle separating apparatus |
JP3343092B2 (en) | 1998-08-31 | 2002-11-11 | マツダ株式会社 | Turbid matter separation equipment |
CN1095405C (en) * | 1998-08-31 | 2002-12-04 | 马自达汽车股份有限公司 | Particle separating apparatus |
US6840383B2 (en) | 1998-08-31 | 2005-01-11 | Mazda Motor Corporation | Particle separating apparatus |
US7361282B2 (en) * | 2003-07-21 | 2008-04-22 | Smullin Corporation | Separator of floating components |
DE102008044888A1 (en) | 2008-08-29 | 2010-03-04 | Iwat Industrie-Wasser-Aufbereitungs-Technik Gmbh | Floatation system for waste water treatment has a two stage design with air bubbles fed into the rising duct for clear water and leading to the upper stage |
DE102008044888B4 (en) * | 2008-08-29 | 2015-05-07 | Iwat Industrie-Wasser-Aufbereitungs-Technik Gmbh | flotation |
DE102011005031A1 (en) * | 2011-03-03 | 2012-09-06 | Siemens Aktiengesellschaft | Flotation device, method for operating the flotation device and their use |
CN102247934A (en) * | 2011-07-04 | 2011-11-23 | 福建省龙岩龙能粉煤灰综合利用有限公司 | Self-air-supply type coal ash flotation process |
CN113479961A (en) * | 2020-12-31 | 2021-10-08 | 无锡德林海环保科技股份有限公司 | Air floatation method and blue algae pressurization recycling treatment system thereof |
CN113479961B (en) * | 2020-12-31 | 2022-03-22 | 无锡德林海环保科技股份有限公司 | Air floatation method and blue algae pressurization recycling treatment system thereof |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAV | Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1 | ||
OP8 | Request for examination as to paragraph 44 patent law | ||
8125 | Change of the main classification |
Ipc: B03D 1/24 |
|
8130 | Withdrawal |