DE117272C - - Google Patents

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Publication number
DE117272C
DE117272C DENDAT117272D DE117272DA DE117272C DE 117272 C DE117272 C DE 117272C DE NDAT117272 D DENDAT117272 D DE NDAT117272D DE 117272D A DE117272D A DE 117272DA DE 117272 C DE117272 C DE 117272C
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DE
Germany
Prior art keywords
oxygen
filter
air
filters
ventilation
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.)
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Application number
DENDAT117272D
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German (de)
Publication of DE117272C publication Critical patent/DE117272C/de
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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
    • C02F3/10Packings; Fillings; Grids
    • 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)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Description

PATENTAMT.PATENT OFFICE.

- JVi 117272 KLASSE 85 c.- JVi 117272 CLASS 85 c.

Die vorliegende Erfindung bezieht sich auf das Verfahren der sogenannten biologischen Reinigung von Abwässern, insbesondere auf die sogenannte aerobische Behandlung oder Behandlung.durch Sauerstoffzufuhr behufs möglichst vollständiger Nitrification des ursprünglich organischen Stickstoffes.The present invention relates to the so-called biological method Purification of wastewater, especially on the so-called aerobic treatment or Treatment by supplying oxygen for the most complete possible nitrification of the original organic nitrogen.

Zunächst wurde die Sauerstoffzufuhr aus der Luft in der Art versucht, dafs man die Abwässer unmittelbar oder nach einer anaerobischen Behandlung (Bacterienwirkung unter Luftabschlufs) durch Filter aus Koks, Bimsstein, Tuffstein und ähnlichem porösen Material passiren liefs, damit die Abwässer in feiner Vertheilung einer möglichst innigen Mischung mit der in den Filterporen enthaltenen Luft bezw. mit dem Sauerstoff in der letzteren unterliegen sollten. Es hat sich jedoch gezeigt, dafs diese Sauerstoffzufuhr nur sehr selten genügt, eine vollständige Nitrificirung herbeizuführen: in der Regel enthält das als »rein« abfliefsende Wasser noch Spuren von organischem Stickstoff und mefsbare Mengen von Ammoniakstickstoff. Man hat nun versucht, diesem Mangel der Filter dadurch abzuhelfen, dafs man ihnen während der Bewässerung durch besonders eingerichtete Ventilationen Luft zuführte. Abgesehen davon, dafs die Ventilationseinrichtungen die an und für sich schon kostspieligen Filteranlagen ganz erheblich vertheuern, haben sie auch den erwarteten Erfolg nicht gehabt.At first the supply of oxygen from the air was attempted in such a way that the waste water was removed immediately or after anaerobic treatment (bacterial effect under exclusion of air) pass through filters made of coke, pumice stone, tuff stone and similar porous material ran, so that the wastewater in a fine distribution as intimate a mixture as possible with the in the filter pores contained air respectively. with the oxygen in the latter are subject should. It has been shown, however, that this supply of oxygen is only very seldom sufficient to bring about complete nitrification: as a rule, this contains what is drained off as "pure" Water still contains traces of organic nitrogen and measurable amounts of ammonia nitrogen. Attempts have now been made to remedy this deficiency in the filters by passing them through during irrigation specially arranged ventilation supplied air. Apart from the fact that the ventilation devices make the filter systems, which are in and of themselves expensive, quite considerably more expensive, they haven't had the expected success either.

Gemäfs vorliegender Erfindung wird dem Mangel des Filters an Sauerstoff nun dadurch in bedeutend billigerer, einfacher und wirksamer Weise abgeholfen, dafs das Filtrirmaterial mit mineralischen Sauerstoffträgern versetzt wird, welche fähig sind, einerseits Sauerstoff leicht abzugeben, und zwar in genau den Mengen, als sie zur vollständigen Oxydation des organischen und Ammoniakstickstoffes erforderlich werden, andererseits sich durch Luftberührung leicht wieder mit Sauerstoff zu sättigen. Da der Bewässerungszeit eines Filters, die ungefähr täglich 6 Stunden in Anspruch nimmt, eine Ruhe, d. i. eine Durchlüftungszeit von 18 Stunden folgt, so hat das in Rede stehende Material ausreichend Zeit, sich den Sauerstoffverlust wieder anzueignen.According to the present invention, the lack of oxygen in the filter is now eliminated remedied in a much cheaper, simpler and more effective way that the filter material is mixed with mineral oxygen carriers, which are capable on the one hand Giving off oxygen easily, and in precisely the quantities required for complete oxidation of organic and ammoniacal nitrogen are required, on the other hand through Easy to saturate again with oxygen on contact with air. Since the watering time of a filter, which takes about 6 hours a day, a rest, d. i. a ventilation time of 18 hours follows, the material in question has sufficient time to view the Acquire loss of oxygen again.

Die Erfindung besteht also darin, die aerobische Behandlung der Abwässer auszuführen vermittelst Filter, deren filtrirende Substanz (Koks, Bimsstein, Tuffstein etc.) durchsetzt ist mit Manganoxyden bezw. sich ähnlich verhaltenden Oxyden.The invention therefore consists in carrying out the aerobic treatment of the waste water by means of filters whose filtering substance (coke, pumice stone, tuff stone, etc.) is permeated with manganese oxides respectively. similarly behaving oxides.

Zahlreiche Versuche haben dargethan, dafs in dieser Weise die Entwicklung der die Nitrification zu Ende führenden aerobischen Bacterien in einem Mafse begünstigt wird, wie durch Ventilation nie erreicht werden konnte: energischere Wirkung bei raschem Verlauf. Hieraus ergiebt sich der erhebliche Vortheil, dafs die Filter, welche bekanntlich den kostspieligsten Theil der Anlage darstellen, entsprechend verkleinert werden können.Numerous experiments have shown that in this way the development of nitrification aerobic bacteria leading to the end is favored to an extent that could never be achieved by ventilation: more energetic effect with rapid progress. From this there is the considerable advantage that the filters, which, as is well known, represent the most expensive part of the system, correspond accordingly can be reduced in size.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur biologischen Wasserreinigung, dadurch gekennzeichnet, dafs das Filtermaterial mit mineralischen Sauerstoffträgern durchsetzt ist, die wie Mangan- und andere Oxyde Sauerstoff leicht abgeben und wieder aufnehmen.Process for biological water purification, characterized in that the filter material is interspersed with mineral oxygen carriers, which like manganese and other oxides are oxygen easily give up and take up again.
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