DE2211890A1 - Waste water purification - using conc hydrogen peroxide forming nascent oxygen recombined for biological purification - Google Patents

Waste water purification - using conc hydrogen peroxide forming nascent oxygen recombined for biological purification

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Publication number
DE2211890A1
DE2211890A1 DE2211890A DE2211890A DE2211890A1 DE 2211890 A1 DE2211890 A1 DE 2211890A1 DE 2211890 A DE2211890 A DE 2211890A DE 2211890 A DE2211890 A DE 2211890A DE 2211890 A1 DE2211890 A1 DE 2211890A1
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Germany
Prior art keywords
oxygen
waste water
hydrogen peroxide
decomposed
biological
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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
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DE2211890A
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German (de)
Inventor
Gerhard Siegmund
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Individual
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Individual
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Priority to DE2211890A priority Critical patent/DE2211890A1/en
Priority to DE19722236504 priority patent/DE2236504B2/en
Publication of DE2211890A1 publication Critical patent/DE2211890A1/en
Pending 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
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/025Biological purification using sources of oxygen other than air, oxygen or ozone
    • 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
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/722Oxidation by peroxides
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/38Chemical stimulation of growth or activity by addition of chemical compounds which are not essential growth factors; Stimulation of growth by removal of a chemical compound
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biotechnology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Microbiology (AREA)
  • Zoology (AREA)
  • Hydrology & Water Resources (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Wood Science & Technology (AREA)
  • Genetics & Genomics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Virology (AREA)
  • Biomedical Technology (AREA)
  • Tropical Medicine & Parasitology (AREA)
  • Medicinal Chemistry (AREA)
  • Molecular Biology (AREA)
  • Biochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Activated Sludge Processes (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

Chemical and biological purification of waste waters by introducing O2 is effected by (1) using as O2-source, highly concentrated, e.g. 80-85%, H2O2 which is either (ae mixed directly with the concn. waste water in a container of suitable material, e.g. pure Al or plastic-lined material; is catalytically decomposed in the presence of heavy metals with nascent O reacting immediately with the waste water to be purified or, (b) in the absence of catalytically active substances, is decomposed directly before entry into container by means of suitable catalysts; (2) in order to enrich the waste water with O2 for biological purification, the H2O2 is decomposed by suitable catalysts before entering receiving stream and the supply of O2-enriched water into biological clarification plant system takes place only after re-combination of nascent O to O2.

Description

J2rfailrn 7i' Reinigung von Abwasser Die zunehmende Verschmutzung der Flusse- und Seen durch nicht genügend geklärte Abwässer macht es erforderlich, daß Verfahren angewendet werden, die bei relativ geringem Platzbedarf in der Lage sind, insbesondere industrielle Verunreinigungen auf kleinem Raum unschädlich zu machen. In den Abwässern befinden sich normalel eise a) ungelöste Stoffe anorganischer und organischer Natur und b) gelöste Stoffe beider Arten. J2rfailrn 7i 'Purification of Sewage Increasing Pollution of rivers and lakes due to insufficiently treated sewage makes it necessary that methods are used that are capable of using a relatively small amount of space are harmless, especially industrial contamination in a small space do. Normally there are a) undissolved inorganic substances in the wastewater and organic in nature and b) solutes of both types.

Die Entfernung der ungelösten Stoffe wird im allgemeinen mechanisch durch Sandfänger, Absetzbecken, Klärtrichter und Spülsiebe bewirkt, während die spezifisch leichteren Schwebstoffe durch diese Methode nicht entfernt werden können. Durch Zusatz von chemischen Klärmitteln wie z. B. Kalkmilch oder Aluminiumsulfat wird die Sedimentatiun dieser Schwebstoffe zwar beschleuniyt, jedoch fallen bei diesem Verfahren sehr große Schlammengen an AuRerdem können diese Zusätze den Vorfluter schädigen. Die organischen Verunreinigungen bedeuten durch ihre Sauerstoffzehrung im Vorfluter eine Gefahr für die Fischzucht. Sind stickstoffhaltige Verbindungen und Kohlehydrate im Abwasser, so können stinkende Fäulnis und sekundäre Fäulnis auftreten. Bei der biologischen Reinigung erfolgt die Zerstörung der organischen Substanz durch Mikroorganismen in Gegenwart von Sauerstoff. Es-hat sich nun gezeigt, daß, insbesondere durch die zunehmende Verwendung von Detergentien, durch einfaches Einblasen von Luft oder auch von Sauerstoff die erforderliche Anreicherung des Abwassers mit Sauerstoff nicht oder nur unvollständig erreicht werden kann.The removal of the undissolved matter is generally mechanical caused by sand traps, settling basins, septic tanks and rinsing strainers, while the specifically lighter suspended solids cannot be removed by this method. By adding chemical clarifiers such. B. milk of lime or aluminum sulfate the sedimentation of these suspended solids is accelerated, but they fall In addition, these additives can destroy the receiving water damage. The organic impurities mean by their consumption of oxygen a danger to fish farming in the receiving waters. Are nitrogenous compounds and carbohydrates in sewage, so can smelly putrefaction and secondary putrefaction appear. In the case of biological cleaning, the organic ones are destroyed Substance produced by microorganisms in the presence of oxygen. It has now been shown that, especially due to the increasing use of detergents, by simple Blowing in air or oxygen, the necessary enrichment of the wastewater with oxygen cannot be reached or only incompletely.

Aufgabe der vorliegenden Erfindung ist es, eine Anreicherung des Abwassers mit Sauerstoff zu bewirken, wobei getrennt wird nach einmal der oxydierenden Wirkung des Sauerstoffs im status nascendi in jenem Bereiche des Abwassers, in dem die bioligisc,he Reinigung infolge der Anvesenheit von die Organismen schädigenden Stoffen nicht möglich ist, und im weiteren durch Anreicherung mit nicht mehr nascierendem Sauerstoff in Jenem Teil der Anlage, der zur biologischen Reinigung bestimmt ist.The object of the present invention is to enrich the wastewater to effect with oxygen, being separated after once the oxidizing effect of oxygen in the status nascendi in that area of the wastewater in which the bioligisc, he No cleaning due to the presence of substances harmful to organisms is possible, and in the further by enrichment with no longer nasal Oxygen in that part of the system that is intended for biological cleaning.

Es ist bekannt, dan man die oxydierende irlrung von Chloroxyden auch zur Abwasserreinigung anwendet. Dieses Verfahren ist jedoch unzulässig, wenn das Abwasser Phenole enthält, da das frei werdende Chlor mit den Phenolen Chlorphenol bildet, das das gereinigte Wasser ungenießbar werden läßt. Dieer Nachteil wird bei Verwendung von hochkonzentriertem Wasserstoffsuperoxyd vermieden.It is known that the oxidizing process of chloroxides is also known used for wastewater treatment. However, this procedure is not permitted if that Wastewater contains phenols, as the chlorine released with the phenols is chlorophenol forms, which makes the purified water inedible. The disadvantage is with Avoid using highly concentrated hydrogen peroxide.

Die Anwendung des nascierenden Sauerstoffs erfolgt zweckmäBig in einer geschlossenen Anlage, in der das zu behandelnde, schon durch mechanische Mittel eingedickte Abwasser mit hohem Schlanmenteil durch Rührer etc. in Bewegung gehalten wird. Das hochkonzentrierte Wasserstoffsuperoxyd wird entweder durch poröse, keramische Platten direkt in dieses Gefäß eingeleitet, wobei eine Feinverteilung des austretenden Wasserstoffsuperoxyds durch die Struktur der Poren gewährleistet wird, oder es wird durch ein Katalysatorbett, das in unmittelbarem Kontakt mit dem Abwasser steht, gedrückt und katalytisch zersetzt. Im ersten Falle ist für die Zersetzung des Mittals die Anwesenheit von katalytisch oder chemisch auf das Wasserstoffsupsroxyd einwirkenden Substanzen am Schlamm Voraussetzung, z. B. Schwer-talle, während im zweiten Falle das Abwasser frei von solchen Stoffen sein kann. In beiden Fällen entsteht unmittelbar im Bereich des Schlammes nascierender Sauerstoff neben Wasser.The application of the nascent oxygen is expediently carried out in one closed plant in which the to be treated, already by mechanical means Thickened wastewater with a high part of the snake kept in motion by stirrers etc. will. The highly concentrated hydrogen peroxide is either porous, ceramic Plates introduced directly into this vessel, with a fine distribution of the emerging Hydrogen peroxide is ensured by the structure of the pores, or it becomes through a catalyst bed that is in direct contact with the wastewater, pressed and catalytically decomposed. The first case is for the decomposition of the Mittal the presence of catalytically or chemically acting on the hydrogen hydroxide Substances on the sludge prerequisite, e.g. B. heavy tales, while in the second case the wastewater can be free of such substances. In both cases arises immediately nascent oxygen next to water in the area of the mud.

Die frei werdende Zersetzungswärme des Wasserstoffsuperoxyds beschleunigt die Oxydationsvorgänge. Die Menge des zu zersetzenden Wosssrstoffsupsroxyds und die Verweilzeit des Abwassers im geschlossenen System sind abhängig von der Art des Schlammes, der oxydiert werden soll. Durch bekannte apparative Mittel kann diese Zeit exakt bestimmt werden. Zweckmäßig wird das Wasserstoffsuperoxyd in Konzentrationen von 80 bis 85 46 angewendet. Das Einbringen in das geschlossene Gefäß kann entweder durch den statischen Druck der Wasserstoffsuperoxyd-Sdule bei hochgelegenen Behälter geschehen oder mit Hilfe von Dosierpumpen durchgeführt werden. Behälter und Rohrleltungen, die mit dem Wasserstoffsuperoxyd in Kontakt kommen, müssen aus Reinalu bestehen oder durch-geeignete Kunststoffüberw züge gegen den Angriff des Mittels geschützt sein.The heat of decomposition released by the hydrogen peroxide accelerates the processes of oxidation. The amount of hydrogen sulfide to be decomposed and the residence time of the wastewater in the closed system depends on the type of the sludge to be oxidized. This can be done by known apparatus Time can be determined exactly. The hydrogen peroxide is expedient in concentrations from 80 to 85 46 applied. The introduction into the closed vessel can either due to the static pressure of the hydrogen peroxide column when the container is at a high level happen or be carried out with the help of metering pumps. Containers and pipelines, that come into contact with the hydrogen peroxide, must from Reinalu exist or by-suitable plastic covers against the attack of the agent be protected.

Zweckmäßig erscheint auch folgende Ausbildung des Einleitvorganges : Die den Schlamm umwälzenden Rührflügel enthalten Kanäle, die mit der das Wassarstoffauperoxyd zuführenden Hohlwelle in Verbindung stehen. Diese Kanäle sind einseitig zum Gefäß zu mit z. B. porösem, keromischem Material abgedeckt, durch das das Wasserstoffsupperoxyd ausgepreßt wird. Eine derartige Vorrichtung wird eine optimale Vermischung von Schlamm und Wasserstoffsuperoxtyd garantieren.The following formation of the initiation process also appears expedient : The agitator blades that circulate the sludge contain channels that connect with that of the Wassarstoffauperoxyd feeding hollow shaft are in connection. These channels are one-sided to the vessel to with z. B. porous, keromic material covered through which the hydrogen superoxide is squeezed. Such a device will provide optimal mixing of sludge and hydrogen peroxide guarantee.

Bei Verwendung eines Katalysatorbettes zur Zersetzung des Wasssrstoffsuperoxydes, wenn also im Schlamm die die Zersetzung bewirkenden Substanzen fehlen, sind ein Siebsystem aus Silberdraht oder Sleiplatten mit einem Überzug von Bleisuperoxyd brauchber. Diese Betten können direkt in die Zuleitungsrchre unmittelbar vor Eintritt in das Gefäß eingesetzt werden.When using a catalyst bed to decompose the hydrogen peroxide, So if the substances causing the decomposition are missing in the sludge, a Sieve system made of silver wire or Sleiplatten with a coating of lead peroxide need. These beds can be placed directly in the supply duct immediately before entry be inserted into the vessel.

Zur Anreicherung das Abwassers lit Sauerstoff für die biologische Reinigung darf dieser nicht im status nascendi vorliegen, da er in di@@@@ Falle die Mikroorgenismen schädigen wörde.To enrich the wastewater lit oxygen for the biological Cleaning, this must not be in the status nascendi, as it is in the case of di @@@@ which would damage the microorganisms.

Aus dies@@ Grunde @uß die Zersetrung des Wasserstoffsuperoxyds @ußerhalb des Vorfluters erfolgen. Zwischen Zer@etzer und Eintritt des mit Bauurutoff angereicherten Wassers in den Vorfluter wird eine Rohrstr@cke @eschaltet, deren Länge so bemassen ist, daß in Abhängigkeit von der Btrömungsgeschwindigkeit des Wasser/Sauerstoffgemisches eine Rekombination des nascierenden Sausratoffa zum nornal@n, mol@kuleren Sauerstoff @rfolgen kann.This is the reason for the decomposition of the hydrogen peroxide outside of the receiving water. Between Zer @ etzer and entry of the enriched with Bauurutoff Water in the receiving water, a pipe line is switched, the length of which is measured is that depending on the flow rate of the water / oxygen mixture a recombination of the nascent Sausratoffa to normal @ n, mol @ kuleren oxygen @ can be done.

Claims (2)

P a t e n t a n s p r ü c h e P a t e n t a n s p r ü c h e Verfahren zur chemischen und biologischen Reinigung von Abwässer durch Einleiten von Sauerstoff, dadurch gekennzeichnet, daß 1) als Sauerstofflieferant hochkonzentriertes Wasserstoffsuperoxyd verwendet wird, das in einem aus geeignetem bEterial bestehendem Behälter entweder direkt mit dem eingedickten Ao wasser mechanisch vermischt und bei Anwesenheit von Schwermetallen durch diese katalytisch zersetzt wird und der nascierende Sauerstoff unmittelbar-mit den zu reinigenden Abwasserteilen reagiert oder bei Abwesenheit katalytisch wirkender Substanzen unmittelbar vor dem Eintritt in den Behälter durch geeignete Katalysatoren zersetzt wird.Process for the chemical and biological purification of waste water by Introducing oxygen, characterized in that 1) as an oxygen supplier highly concentrated hydrogen peroxide is used, which is in a suitable bEterial existing container either directly with the thickened Ao water mechanically mixed and catalytically decomposed by these in the presence of heavy metals and the nascent oxygen directly-with the wastewater parts to be cleaned reacts or in the absence of catalytically active substances immediately before the Entry into the container is decomposed by suitable catalysts. 2) zur Anreicherung des Abwassers mit Sauerstoff für die biologische Reinigung das Wasserstoffsuperoxyd durch geeignete Katalysatoren vor Eintritt in den Vorfluter zersetzt wird und die Zuleitung des -mit Sauerstoff angereicherten Wassers in den für die biologische Klärung bestimmten Anlageteil erst nach Rekombination des nascierenden Sauerstoffs zu molekularem Sauerstoff erfolgt.2) to enrich the wastewater with oxygen for the biological Purification of the hydrogen peroxide using suitable catalysts before entering the receiving water is decomposed and the feed line is enriched with oxygen Water in the part of the plant intended for biological clarification only after recombination from nascent oxygen to molecular oxygen.
DE2211890A 1972-03-11 1972-03-11 Waste water purification - using conc hydrogen peroxide forming nascent oxygen recombined for biological purification Pending DE2211890A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2211890A DE2211890A1 (en) 1972-03-11 1972-03-11 Waste water purification - using conc hydrogen peroxide forming nascent oxygen recombined for biological purification
DE19722236504 DE2236504B2 (en) 1972-03-11 1972-07-13 PROCESS FOR MEETING OXYGEN REQUIREMENTS IN AEROBIC WASTE WATER PURIFICATION AND TECHNICAL MICROBIOLOGY

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2211890A DE2211890A1 (en) 1972-03-11 1972-03-11 Waste water purification - using conc hydrogen peroxide forming nascent oxygen recombined for biological purification
DE19722236504 DE2236504B2 (en) 1972-03-11 1972-07-13 PROCESS FOR MEETING OXYGEN REQUIREMENTS IN AEROBIC WASTE WATER PURIFICATION AND TECHNICAL MICROBIOLOGY

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DE2211890A1 true DE2211890A1 (en) 1973-09-20

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DE2211890A Pending DE2211890A1 (en) 1972-03-11 1972-03-11 Waste water purification - using conc hydrogen peroxide forming nascent oxygen recombined for biological purification
DE19722236504 Withdrawn DE2236504B2 (en) 1972-03-11 1972-07-13 PROCESS FOR MEETING OXYGEN REQUIREMENTS IN AEROBIC WASTE WATER PURIFICATION AND TECHNICAL MICROBIOLOGY

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Application Number Title Priority Date Filing Date
DE19722236504 Withdrawn DE2236504B2 (en) 1972-03-11 1972-07-13 PROCESS FOR MEETING OXYGEN REQUIREMENTS IN AEROBIC WASTE WATER PURIFICATION AND TECHNICAL MICROBIOLOGY

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008074A1 (en) * 1978-08-12 1980-02-20 Bayer Ag Process for the chemical and biological treatment of waste water
FR2493824A1 (en) * 1980-11-08 1982-05-14 Akzo Nv DEVICE FOR ENRICHING OXYGEN LIQUIDS
DE4119144A1 (en) * 1991-06-11 1992-12-17 Weidner & Co Kg Biological, chemical and physical processing of contaminated water - involves pre-treatment with oxidising agents including hydrogen peroxide and catalysts

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2530722C2 (en) * 1975-07-10 1984-05-24 Wolf-Rüdiger Dipl.-Ing. 7000 Stuttgart Müller Process for nitrification, demanganization and iron removal from contaminated water
DE2608899C3 (en) * 1976-03-04 1982-12-30 Müller, Wolf-Rüdiger, Dipl.-Ing., 7000 Stuttgart Process to improve the backwashing process for filters made of granular materials through the use of hydrogen peroxide (H ↓ 2 ↓ O ↓ 2 ↓)
DE3011247C2 (en) * 1980-03-24 1982-10-28 Schreiber-Kläranlagen Dr.-Ing. Aug. Schreiber GmbH & Co KG, 3012 Langenhagen Process for cleaning waste water using activated sludge
DE3017289C2 (en) * 1980-05-06 1984-11-22 Rudolf 8551 Adelsdorf Messner Device for the biological purification of waste water
DE3543408A1 (en) * 1985-12-07 1987-06-11 Schreiber Berthold Process for sewage purification using activated sludge
DE3703824A1 (en) * 1987-02-07 1988-08-18 Thomae Gmbh Dr K METHOD FOR SIMULTANEOUSLY CHEMICAL AND BIOLOGICAL DISPOSAL OF SOLID AND LIQUID ORGANIC WASTE AND DEVICES FOR CARRYING OUT THIS METHOD

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008074A1 (en) * 1978-08-12 1980-02-20 Bayer Ag Process for the chemical and biological treatment of waste water
US4549969A (en) * 1980-08-11 1985-10-29 Akzo Nv Process and an apparatus for enriching liquids with oxygen
FR2493824A1 (en) * 1980-11-08 1982-05-14 Akzo Nv DEVICE FOR ENRICHING OXYGEN LIQUIDS
US4440648A (en) * 1980-11-08 1984-04-03 Akzo Nv Process and an apparatus for enriching liquids with oxygen
DE4119144A1 (en) * 1991-06-11 1992-12-17 Weidner & Co Kg Biological, chemical and physical processing of contaminated water - involves pre-treatment with oxidising agents including hydrogen peroxide and catalysts

Also Published As

Publication number Publication date
DE2236504B2 (en) 1977-12-15
DE2236504A1 (en) 1974-01-31

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