DE10012404A1 - Reduction of anaerobically or aerobically digested sludge comprises feeding ozone-enriched air or ozone-enriched oxygen so microorganisms damaged by ozone are digested by those which are not, and converted to carbon dioxide - Google Patents
Reduction of anaerobically or aerobically digested sludge comprises feeding ozone-enriched air or ozone-enriched oxygen so microorganisms damaged by ozone are digested by those which are not, and converted to carbon dioxideInfo
- Publication number
- DE10012404A1 DE10012404A1 DE2000112404 DE10012404A DE10012404A1 DE 10012404 A1 DE10012404 A1 DE 10012404A1 DE 2000112404 DE2000112404 DE 2000112404 DE 10012404 A DE10012404 A DE 10012404A DE 10012404 A1 DE10012404 A1 DE 10012404A1
- Authority
- DE
- Germany
- Prior art keywords
- ozone
- sludge
- aerobic
- digested
- enriched
- 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- Withdrawn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
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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
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- 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
- Y02W10/20—Sludge processing
Abstract
Description
Ein Verfahren zur biologischen Behandlung und Reduzierung von Faulschlamm der zuvor anaerob behandelten Überschußschlämme aus biologischen Belebungsstufen von Abwasserkläranlagen, dadurch gekennzeichnet, daß der ausgefaulte Schlamm in Behältnissen mit sauerstoffhaltigen Gasen, wie Luft, technisch gewonnener Sauerstoff, mit Sauerstoff angereicherte Luft, mit Ozon angereicherte Luft oder mit Ozon angereicherter Sauerstoff, so begast wird, daß sich eine aerobe Biologie, in der der zugegebene Faulschlamm reduziert wird, ausbildet.A process for the biological treatment and reduction of digested sludge previously anaerobically treated excess sludge from biological activation stages of Sewage treatment plants, characterized, that the digested sludge in containers with oxygen-containing gases, such as air, technically obtained oxygen, air enriched with oxygen, with ozone enriched air or oxygen enriched with ozone, so gassed that one aerobic biology, in which the added digested sludge is reduced.
Es soll ein Verfahren erfunden und entwickelt werden, das anoxisch stabilisierten Schlamm aus Faultürmen und aerob stabilisierten Schlamm aus Digestern technisch möglichst einfach mit einer sicheren hohen Verfügbarkeit auf ökologisch und ökonomisch sinnvolle Weise sehr stark reduziert auf der Basis der zwischenzeitlich gefundenen Erkenntnis.A process is to be invented and developed, the anoxically stabilized sludge from digestion towers and aerobically stabilized sludge from digesters as technically simple as possible with a safe high availability in an ecologically and economically sensible way greatly reduced on the basis of the knowledge found in the meantime.
Die Lösung der Aufgabe, Faulschlamm technisch, ökologisch und ökonomisch sinnvoll zu reduzieren, besteht darin, daß der anoxisch ausgefaulte Schlamm einer aeroben biologischen Behandlung unterzogen werden soll, indem der Faulschlamm in einen oder mehrere Behältnissen, Becken oder Behälter überführt wird, die von unten entweder mit soviel Ozon angereicherter Luft oder mit Ozon angereichertem Sauerstoff begast werden, daß sich eine aerobe Biologie ausbilden kann, siehe Abb. 1.The solution to the task of reducing digested sludge in a technically, ecologically and economically sensible manner is that the anoxically digested sludge is to be subjected to an aerobic biological treatment by transferring the digested sludge into one or more containers, basins or containers, which either from below be gassed with so much ozone-enriched air or oxygen that an aerobic biology can develop, see Fig. 1.
Der Faulschlamm kann auch in ein biologisches Becken mit zwei Kammern (Haupt- und Nebenkammer) überführt, nur ein Teilstrom dieses zu überführenden Faulschlammes im Nebenstrom ozont und dann dem Hauptstrom zugeführt werden, so daß nicht alle Mikroorganismen der Ozonung ausgesetzt werden, siehe Abb. 2. The digested sludge can also be transferred to a biological basin with two chambers (main and secondary chamber), only a partial stream of this digested sludge to be transferred can be ozonated in the secondary stream and then fed to the main stream, so that not all microorganisms are exposed to ozonation, see Fig. 2 .
Aus dem Faulturm (1a), in dem anoxische Bedingungen für die Biologie herrschen, oder einem Digester (1b), in dem aerobe Bedingungen herrschen, fördert eine Pumpe (2) den Faulschlamm oder den aerob konditionierten Schlamm zur weitergehenden Schlammstabilisierung in ein aerobes volldurchmischtes Biologiebecken (3), das mit einer Vorrichtung (4), z. B. perforierte Schläuche, begast wird. Dies Gas kann mit Ozon angereicherte Luft (7) oder mit Ozon angereicherter Sauerstoff (8) sein. Der aerob behandelte Schlamm aus dem Becken (3) wird über die Rohrleitung (5), z. B. zur Eindickung, weiter geleitet.From the digestion tower ( 1 a), in which there are anoxic conditions for biology, or a digester ( 1 b), in which aerobic conditions prevail, a pump ( 2 ) conveys the digested sludge or the aerobically conditioned sludge to further stabilize the sludge in an aerobic fully mixed biological pool ( 3 ), which with a device ( 4 ), for. B. perforated hoses is gassed. This gas can be air ( 7 ) enriched with ozone or oxygen ( 8 ) enriched with ozone. The aerobically treated sludge from the basin ( 3 ) is piped ( 5 ), e.g. B. for thickening, passed on.
Aus dem Faulturm (1a), in dem anoxische Bedingungen für die Biologie herrschen, oder einem Digester (1b), in dem aerobe Bedingungen herrschen, fördert eine Pumpe (2a) den Faulschlamm oder den aerob konditionierten Schlamm zur weitergehenden Schlammstabilisierung in ein aerobes volldurchmischtes Biologiebecken (3), das aus einer Hauptkammer (4) und einer Nebenkammer (5) besteht.From the digestion tower ( 1 a), in which there are anoxic conditions for biology, or a digester ( 1 b), in which aerobic conditions prevail, a pump ( 2 a) conveys the digested sludge or the aerobically conditioned sludge for further sludge stabilization aerobic fully mixed biological pool ( 3 ) consisting of a main chamber ( 4 ) and a secondary chamber ( 5 ).
Nur ein Teilstrom (6) vom Schlamm aus der Hauptkammer (4) wird mit einer speziellen Pumpe (2b) in die Nebenkammer (5) gefördert, wobei sie auch entweder das Luft-Ozon- Gemisch (7) oder das Sauerstoff-Ozon-Gemisch (8) ansaugt. Die Ozonreaktion findet in dem Teilstrom und in der Nebenkammer statt. Der ozonte Schlamm fließt von der Nebenkammer (5) in die Hauptkammer (4) über, so daß nicht alle Mikroorganismen der Ozonung ausgesetzt werden, siehe Abb. 2. Der Ablauf (9) aus der Hauptkammer (5) wird der weitergehenden Behandlung zugeführt.Only a partial flow ( 6 ) of the sludge from the main chamber ( 4 ) is conveyed into the secondary chamber ( 5 ) with a special pump ( 2 b), whereby it also either the air-ozone mixture ( 7 ) or the oxygen-ozone Mixture ( 8 ) sucks. The ozone reaction takes place in the partial flow and in the secondary chamber. The ozone sludge flows from the secondary chamber ( 5 ) into the main chamber ( 4 ) so that not all microorganisms are exposed to the ozonation, see Fig. 2. The outlet ( 9 ) from the main chamber ( 5 ) is fed to the further treatment.
Der Vorteil der aeroben Reduzierung von Schlamm aus Faultürmen, wo anoxische Bedingungen herrschten, oder aus Digestern, wo aerobe Bedingungen herrschten, nach diesem erfindungsgemäßen Verfahren mit Ozonung und aerober biologischer Behandlung liegt darin, daß entsprechend diesem einfachen Verfahren weniger Schlamm entwässert, gepreßt und entsorgt werden muß, weil die im Schlamm aus dem Faulturm oder aus dem Digester zusammengeballten Mikroorganismen gemäß der PHILAQUA-Anmeldung durch die Ozonung gezielt beschädigt werden, so daß sie in einer aeroben Biologie von den nicht geschädigten Mikroorganismen gefressen und zu Kohlendioxid veratmet werden können, was insgesamt durch die Kombination zu einer Reduzierung des Schlamme und einer Verminderung der Entsorgungskosten führt.The advantage of aerobic reduction of sludge from digestion towers where anoxic Conditions prevailed, or from digesters where aerobic conditions prevailed this method according to the invention with ozonization and aerobic biological treatment is that, according to this simple procedure, less sludge is dewatered, must be pressed and disposed of, because in the sludge from the digestion tower or from the Digester aggregated microorganisms according to the PHILAQUA application by the Ozonation can be deliberately damaged so that it is not in an aerobic biology damaged microorganisms can be eaten and breathed into carbon dioxide, which overall by combining to reduce sludge and Reduction of disposal costs leads.
Zusätzlich wird Ammoniumstickstoff noch weiter oxidiert und humanpathogene Keime werden reduziert, was eine Verbesserung der Schlammstabilisierung bedeutet.In addition, ammonium nitrogen is further oxidized and human pathogenic germs are reduced, which means an improvement in sludge stabilization.
Kombiniert man die oben angeführte Biologie (biologische Stufe) mit dem Verfahrensschritt der Denitrifikation, so kann zusätzlich die Stickstoffrückbelastung der Kläranlage durch Zentrat- bzw. Prozeßwasser nahezu vollständig vermindert werden.Combine the above biology (biological stage) with the process step denitrification, the nitrogen back pressure from the sewage treatment plant can also Centrate or process water can be reduced almost completely.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000112404 DE10012404A1 (en) | 1999-05-03 | 2000-03-15 | Reduction of anaerobically or aerobically digested sludge comprises feeding ozone-enriched air or ozone-enriched oxygen so microorganisms damaged by ozone are digested by those which are not, and converted to carbon dioxide |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999120010 DE19920010A1 (en) | 1999-05-03 | 1999-05-03 | Anaerobically digested sludge subjected to aerobic treatment reducing volume of sludge for final disposal and costs |
DE2000112404 DE10012404A1 (en) | 1999-05-03 | 2000-03-15 | Reduction of anaerobically or aerobically digested sludge comprises feeding ozone-enriched air or ozone-enriched oxygen so microorganisms damaged by ozone are digested by those which are not, and converted to carbon dioxide |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10012404A1 true DE10012404A1 (en) | 2001-10-04 |
Family
ID=26004831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE2000112404 Withdrawn DE10012404A1 (en) | 1999-05-03 | 2000-03-15 | Reduction of anaerobically or aerobically digested sludge comprises feeding ozone-enriched air or ozone-enriched oxygen so microorganisms damaged by ozone are digested by those which are not, and converted to carbon dioxide |
Country Status (1)
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DE (1) | DE10012404A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015022716A1 (en) * | 2013-08-14 | 2015-02-19 | Enea - Agenzia Nazionale Per Le Nuove Tecnologie, L'energia E Lo Sviluppo Economico Sostenibile Lungotevere G.A. | Method for the removal of ammoniacal and total nitrogen and for the stabilisation and improvement of the characteristics of filterability of an anaerobical digestate through the use of ozone |
-
2000
- 2000-03-15 DE DE2000112404 patent/DE10012404A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015022716A1 (en) * | 2013-08-14 | 2015-02-19 | Enea - Agenzia Nazionale Per Le Nuove Tecnologie, L'energia E Lo Sviluppo Economico Sostenibile Lungotevere G.A. | Method for the removal of ammoniacal and total nitrogen and for the stabilisation and improvement of the characteristics of filterability of an anaerobical digestate through the use of ozone |
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