DE1816932A1 - Process for the purification of waste water with a flotation stage - Google Patents
Process for the purification of waste water with a flotation stageInfo
- Publication number
- DE1816932A1 DE1816932A1 DE19681816932 DE1816932A DE1816932A1 DE 1816932 A1 DE1816932 A1 DE 1816932A1 DE 19681816932 DE19681816932 DE 19681816932 DE 1816932 A DE1816932 A DE 1816932A DE 1816932 A1 DE1816932 A1 DE 1816932A1
- Authority
- DE
- Germany
- Prior art keywords
- flotation
- added
- wastewater
- substances
- stage
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Analytical Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Physical Water Treatments (AREA)
- Paper (AREA)
Description
DipS.-Ing. H. B. KAHLER - Di .-Lig. W. STARKDipS.-Ing. H. B. KAHLER - Di.-Lig. W. STRONG
i+15Q Krefeld · Moerser Straße 14O · Fernruf (O 2151) 2 O4- 69i + 15Q Krefeld · Moerser Straße 14O · Fernruf (O 2151) 2 O4- 69
Datum:Date:
23. DEZ. 196823 DEC. 1968
Unser Zeichen:Our sign:
In d*r Antwort bin* imgibin 2 3?3 6S 426 In the answer I am * imgibin 2 3? 3 6S 426
Ihr Zeichen:Your sign:
Dr.-Ing. Hainer Born, 43 Essen, Ruhrallee 4Dr.-Ing. Hainer Born, 43 Essen, Ruhrallee 4
Verfahren zur Reinigung von Abwasser mit einer FlotationsstufeProcess for the purification of waste water with a flotation stage
Die Erfindung bezieht sich auf ein Verfahren zur Reinigung τοη Abwasser mit einer Jflotationsstufe für das Rohabwasser und/oder das τοη Grοbatoff befreite Rohabwasser.The invention relates to a method for cleaning τοη Wastewater with a flotation stage for the raw wastewater and / or the τοη Grοbatoff freed raw sewage.
Die Flotation yon Abwasser ist grundsätzlich insbesondere aus der Papierabwasserreinigung bekannt. Der Erfindung liegt dabei die Aufgabe zugrunde, den Plotationseffekt erheblich zu erhöhen, indem die praktisch nicht flotierbaren gelösten und kolloidalen Verschmutzungsanteile der organischen Verschmutzung mitausflotiert werden, insgesamt also ein höherer Anteil der gesamten organischen Verschmutzung durch die Flotation τοη dem Abwasser abgetrennt wird.In principle, the flotation of wastewater is in particular off known in paper wastewater treatment. The invention is based on the object of significantly increasing the plot effect, by the practically non-floatable dissolved and colloidal Contamination parts of the organic pollution are also floated out be, overall a higher proportion of the total organic pollution from flotation τοη dem Waste water is separated.
Die. Iiöaung dieser Aufgabe besteht darin, daß dem Abwasser flotisrbare Substanzen mit dar Fähigkeit, gelöste bzw, im an-The. The solution to this task is that the wastewater floatable substances with the ability to dissolve or
009827/1857009827/1857
Deutsche Bank AQ 103/t525 Krefeld ■ Stadt-Sparkasse Krafeld 3Ο5 722 ■ Postscheck Essen 4Ο55Deutsche Bank AQ 103 / t525 Krefeld ■ Stadt-Sparkasse Krafeld 3Ο5 722 ■ Postal check Essen 4Ο55
schließenden kolloidalen Bereich vorliegende organische Stoffe adsorptiv zu binden, zugesetzt werden. In erster Linie kann dazu erfindungsgemäß biologisch aktiver organischer Schlamm verwendet werden, der sich einerseits durch seine hohe Fähigkeit, gelöste bzw. kolloidal vorliegende organische Schmutzungen adsorptiv zu binden, auszeichnet und zum anderen flotierbar ist. Eine andere Möglichkeit besteht darin, anorganische Substanzen, wie beispielsweise Eisen-, Calcium- oder Aluminiumhydroxydflocken zu verwenden.To bind organic substances present in the closing colloidal area by adsorption, are added. First and foremost can do this According to the invention biologically active organic sludge can be used, which is on the one hand due to its high ability to be dissolved or to bind colloidally present organic dirt adsorptively, distinguishes itself and on the other hand is floatable. One Another possibility is to use inorganic substances such as iron, calcium or aluminum hydroxide flakes to use.
Da bei der Flotation als Trennprozeß einerseits eine Verarmung des Abwassers an Feststoffen und somit an Adsorptionsflächen stattfindet, andererseits jedoch die Adsorption in Abhängigkeit von der Zeit und den Kontaktmöglichkeiten steht, kann es erforderlich sein, den aktiven Schlamm nicht nur zu Verfahrens-::.... beginn dem Rohabwasser zuzusetzen. Aus diesem Grunde kann es in Abweichung der in der Abwassertechnik üblichen Flotationspraxis notwendig werden, das Abwasser mehrstufig in hintereinander geschalteten Flotationskammern zu flotieren, wobei jeder Flotationskammer erneut die genannten Substanzen mit der Fähigkeit adsorptiver Bindung zugesetzt werden. Gegebenenfalls kann dabei wenigstens ein (Teil des Feststoffaustragts einer nachfolgenden Flotationskamiüer dar vorhergehenden Flotationskammer wieder zugeleitet werden. Diese mehrstufige Flotation ist sinnvoll, um eine Verarmung des Abwassers an Feststoffen und somit an Adsorptionsflächen zu vermeiden.Since in flotation as a separation process, on the one hand, there is an impoverishment of the wastewater takes place on solids and thus on adsorption surfaces, but on the other hand the adsorption is dependent depending on the time and contact options, it may be necessary to not only use the active sludge - :: .... start adding to the raw sewage. For this reason, it can deviate from the flotation practice customary in wastewater technology It will be necessary to float the wastewater in several stages in flotation chambers connected in series, with each flotation chamber Again, the substances mentioned are added with the ability to adsorptive binding. If necessary, it can at least one (part of the solids discharge of a subsequent Flotation chamber of the previous flotation chamber again be forwarded. This multi-stage flotation is useful in order to prevent the wastewater from becoming impoverished in terms of solids Avoid adsorption surfaces.
Die Erfindung sieht ferner vor, daß dsm Abwasser zusätzlichThe invention also provides that dsm wastewater in addition
009827/1857009827/1857
:"-■"'■·.- — X —: "- ■" '■ · .- - X -
an sich bekannte organische und /oder anorganische Flockungshilfsmittel, insbesondere organische Polymere, zugegeben werden. Zweckmäßig werden die Flockungshilfsmittel dabei in der letzten Kammer zugegeben, in der das Abwasser schon den weitestgehenden Reinigungsgrad erhalten hat, damit durch die Floekungshilfsmittei ein guter Restaustrag ermöglicht wird.known organic and / or inorganic flocculants, in particular organic polymers can be added. The flocculants are expediently in added to the last chamber in which the wastewater has already received the greatest possible degree of purification, thus through the Floekungshilfsmittei a good residual discharge is made possible.
Erfindungsgemäß ist es auch möglich, zwischen den einzelnen Flotationskammern besondere Reaktionsräume vorzusehen, inAccording to the invention it is also possible between the individual Provide special reaction chambers in flotation chambers
denen die Flockungshilfsmittel zugesetzt werden. ^to which the flocculants are added. ^
Schließlich sieht die Erfindung vor, daß der biologisch aktive organische Schlamm einer der Flotationsstufe nachgeschalteten biologischen Stufe als Überschußschlamm entnommen wird. Bei einem solchen Verfahren mit nachgeschalteter biologischer Stufe kann es auch sinnvoll sein, die in den letzten Flotationskammern zugesetzten Schlammengen nicht restlos auszuflotieren, sondern an die biologische Stufe weiterzugeben.Finally, the invention provides that the biologically active organic sludge downstream of one of the flotation stages biological stage is removed as excess sludge. In such a process with a downstream biological stage it can also make sense not to completely float out the sludge quantities added in the last flotation chambers, but to pass it on to the biological level.
Sofern keine hinreichende Menge Überschußschlamm vorhanden *m ist oder aber keine nachbiologische Stufe existiert, der aktiver organischer Schlamm entnommen werden kann, ist nach einem weiteren Merkmal der Erfindung vorgesehen, daß ein Seil des Feststoffaustrages durch Sauerstoffzufuhr in einem oder mehreren Reaktionsräuaen aktiviert und dem Flotationskreislauf wieder zugesetzt wird.If no sufficient amount of excess sludge is available * m, or there is no nachbiologische stage, the active organic sludge can be removed, according to a further feature of the invention, it is provided that a cable of the solids discharge activated by supply of oxygen in one or more Reaktionsräuaen and the flotation circuit again is added.
009827/1857009827/1857
Claims (10)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1816932A DE1816932C3 (en) | 1968-12-24 | 1968-12-24 | Process for the purification of waste water with a flotation stage |
NL6919007A NL6919007A (en) | 1968-12-24 | 1969-12-18 | |
ES374847A ES374847A1 (en) | 1968-12-24 | 1969-12-23 | Procedure for wastewater purification. (Machine-translation by Google Translate, not legally binding) |
CH1922869A CH500140A (en) | 1968-12-24 | 1969-12-24 | Process for the purification of waste water with a flotation stage |
FR6944880A FR2027060A1 (en) | 1968-12-24 | 1969-12-24 | Purification of effluent by treatment with - a flotation agent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1816932A DE1816932C3 (en) | 1968-12-24 | 1968-12-24 | Process for the purification of waste water with a flotation stage |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1816932A1 true DE1816932A1 (en) | 1970-07-02 |
DE1816932B2 DE1816932B2 (en) | 1978-06-01 |
DE1816932C3 DE1816932C3 (en) | 1979-02-08 |
Family
ID=5717358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1816932A Expired DE1816932C3 (en) | 1968-12-24 | 1968-12-24 | Process for the purification of waste water with a flotation stage |
Country Status (5)
Country | Link |
---|---|
CH (1) | CH500140A (en) |
DE (1) | DE1816932C3 (en) |
ES (1) | ES374847A1 (en) |
FR (1) | FR2027060A1 (en) |
NL (1) | NL6919007A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2380990A1 (en) * | 1977-02-16 | 1978-09-15 | Pielkenrood Vinitex Bv | RESIDUAL WATER TREATMENT PROCESS AND DEVICE |
EP0082809A1 (en) * | 1981-12-18 | 1983-06-29 | Benno Perren (verstorben) | Process and apparatus for the continuous separation of suspended matter from a polluted liquid |
EP0286036A2 (en) * | 1987-04-09 | 1988-10-12 | Franz Dipl.-Ing. Köppl | Process and installation for treating dissolved and undissolved substances containing industrial waste water |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4239620A (en) * | 1979-04-16 | 1980-12-16 | Mobil Oil Corporation | Cyanide removal from wastewaters |
-
1968
- 1968-12-24 DE DE1816932A patent/DE1816932C3/en not_active Expired
-
1969
- 1969-12-18 NL NL6919007A patent/NL6919007A/xx unknown
- 1969-12-23 ES ES374847A patent/ES374847A1/en not_active Expired
- 1969-12-24 CH CH1922869A patent/CH500140A/en not_active IP Right Cessation
- 1969-12-24 FR FR6944880A patent/FR2027060A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2380990A1 (en) * | 1977-02-16 | 1978-09-15 | Pielkenrood Vinitex Bv | RESIDUAL WATER TREATMENT PROCESS AND DEVICE |
EP0082809A1 (en) * | 1981-12-18 | 1983-06-29 | Benno Perren (verstorben) | Process and apparatus for the continuous separation of suspended matter from a polluted liquid |
EP0286036A2 (en) * | 1987-04-09 | 1988-10-12 | Franz Dipl.-Ing. Köppl | Process and installation for treating dissolved and undissolved substances containing industrial waste water |
EP0286036A3 (en) * | 1987-04-09 | 1989-04-26 | Franz Dipl.-Ing. Köppl | Process and installation for treating dissolved and undissolved substances containing industrial waste water |
Also Published As
Publication number | Publication date |
---|---|
DE1816932B2 (en) | 1978-06-01 |
FR2027060A1 (en) | 1970-09-25 |
ES374847A1 (en) | 1972-01-16 |
CH500140A (en) | 1970-12-15 |
NL6919007A (en) | 1970-06-26 |
DE1816932C3 (en) | 1979-02-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) | ||
8339 | Ceased/non-payment of the annual fee |