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WO1987003574A1 - Procede et installation de purification des eaux usees - Google Patents

Procede et installation de purification des eaux usees Download PDF

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Publication number
WO1987003574A1
WO1987003574A1 PCT/EP1986/000715 EP8600715W WO8703574A1 WO 1987003574 A1 WO1987003574 A1 WO 1987003574A1 EP 8600715 W EP8600715 W EP 8600715W WO 8703574 A1 WO8703574 A1 WO 8703574A1
Authority
WO
WIPO (PCT)
Prior art keywords
biological
sludge
filter
biological pretreatment
plant according
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.)
Ceased
Application number
PCT/EP1986/000715
Other languages
German (de)
English (en)
Inventor
Peter Kunz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Publication of WO1987003574A1 publication Critical patent/WO1987003574A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • C02F3/30—Aerobic and anaerobic processes
    • 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
    • C02F3/006—Regulation methods for biological treatment
    • 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
    • C02F3/121—Multistep treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/42—Liquid level
    • 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
    • C02F3/08—Aerobic processes using moving contact bodies
    • C02F3/082—Rotating biological contactors
    • 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

Definitions

  • the invention relates to a process for the purification of waste water with at least one primary sludge, the physical preliminary clarification, a highly loaded biological pretreatment and a subsequent biological and / or physical aftertreatment, in which mainly dissolved waste water ingredients are converted into a secondary sludge.
  • the majority of wastewater treatment plants and practically all municipal wastewater treatment plants have rake and sand trap systems at the inlet for the mechanical-physical separation of coarse and speci ⁇ fically heavy particles, which are followed by a preliminary treatment in which the settable particles are separated by sedimentation.
  • the primary clarification takes place in mostly elongated tanks, over the bottom of which a conveyor is guided, which transports the sedated primary sludge into a sludge collection trough, from which it is finally drawn off and fed to a digestion process.
  • the sedimentation rate in the pre-clarifier decreases exponentially with increasing residence time. whereby suspended matter can hardly be separated. You get into the aftertreatment with the waste water.
  • an activated sludge process is possible in which microorganisms, namely the so-called destructors, find optimal conditions with regard to nutrient supply and oxygen supply.
  • the destructors convert dissolved organic substance into the body's own substance, multiply and grow into solid structures, which are in turn accessible to physical separation processes.
  • the secondary sludge is partly returned to the activated sludge stage and partly removed as excess sludge.
  • the necessary oxygen is provided by direct introduction of air or by circulating the wastewater.
  • the pre-clarified wastewater is sprinkled on the surface via rotary sprinklers, from where it seeps through the trickling filter material.
  • the destructors sitting on the surface of the trickling filter material convert the biodegradable wastewater ingredients into sludge.
  • the disc immersion process works in a similar way, in which the destructors sit on rotating discs which are immersed in the pre-treated waste water.
  • the destructors absorb the wastewater ingredients and supply themselves with atmospheric oxygen when they emerge. If the vegetation has a certain thickness in the trickling filter and disc immersion method, it is entrained with the wastewater flow due to anaero decomposition processes and the repeated hydraulic stress. These particles can then also be sedimented.
  • flotation processes are also used for post-treatment, in which non-sedimenting suspended matter and chemically precipitated wastewater ingredients are dispersed by means of precipitants and flocculants.
  • practice has shown that such a post-flotation can hardly be carried out economically.
  • the primary sludge obtained by preliminary clarification is therefore added to the secondary sludge settling in the aeration ponds.
  • the sludge drawn from the ventilation ponds is made up of all wastewater ingredients that were separated in the course of the clarification process. What is more serious, however, is that part of the existing and formed solids is mineralized with oxygen consumption, so that water-eutrophic substances (nitrate, phosphate) are generated in the sewage treatment plant.
  • the invention is based on the object of proposing a method and a plant for the purification of waste water which enables optimum operation in the treatment stage downstream of the preliminary clarification, regardless of whether this treatment stage is operated biologically, chemically or physically or in mixed operation .
  • This object is achieved according to the invention in that the sludge obtained in the biological pretreatment is separated from the waste water and added to the primary sludge, and in that the substance used in the biological pretreatment is controlled to adjust the load in the aftertreatment.
  • the process according to the invention not only the sedimentable particles are separated off in the preliminary clarification stage, but also organic suspended matter and easily degradable dissolved organic wastewater constituents are converted into biomass and filtered out of the wastewater.
  • the biomass formed in this way is added to the primary sludge, so that the sludge load in the biological or biological-chemical-physical aftertreatment is reduced and the mineralization in the secondary sludge is limited.
  • the load in the post-treatment stage can thus be adjusted to optimal microbiological conditions by controlling the rate of metabolism in the biological pre-treatment. This is possible without difficulty by controlling the oxygen and / or the nutrient supply in the biological pretreatment.
  • the feed conditions for the aftertreatment stage can be controlled, for example, as a function of the feed quantity or the feed concentration of biodegradable substances.
  • the effect of the post-treatment stage on the daily as well as the weather-dependent inflow amount can be equalized by the fact that at times of peak loads.
  • the metabolic rate in the biological clarification stage is increased.
  • operational peak loads caused by industrial wastewater can be compensated. While the aforementioned measures aim to equalize the inlet conditions in the post-treatment stage, i.e.
  • the biological pre-treatment can also be controlled in such a way that the load in the post-treatment stage is increased or decreased in a targeted manner, for example for a to receive biological aftertreatment alternating with nutrient-rich or nutrient-poor phases in order to influence the type of microorganisms and / or to be able to select the microorganisms in a way that is adapted to the ingredients of the incoming wastewater.
  • the preliminary clarification according to the invention has a particularly favorable effect on all subsequent activation processes which are operated with growth areas because the silting up of these areas is considerably reduced and a constant inflow concentration leads to uniform, highly active growth on these areas. Furthermore, the use of chemicals can be reduced in the case of chemical-physical aftertreatment with precipitants and flocculants, because the losses caused by unnecessary reactions with suspended solids and solid matter and bacterial mass are avoided - - CT / EP86 / 00715
  • the invention has the advantage that the primary-secondary sludge ratio is shifted in favor of larger amounts of primary sludge.
  • the primary sludge obtained according to the invention contains a considerably higher proportion of organic substances than the conventional only physical preliminary clarification, which give the primary sludge a higher usable energy content during digestion and combustion.
  • sludge treatment can be separated into a primary sludge treatment and a secondary sludge treatment.
  • primary sludge sludge digestion is possible with less energy input and better energy yield in the form of usable digestion gas.
  • the increased retention of heavy metals, poorly biodegradable undissolved organic substances or even toxic compounds in the pre-clarification stage through biological conversion or - through filtering leads to an accumulation of pollutants in the primary sludge, but has the advantage that a pollutant-free or low-pollutant secondary sludge is obtained in the post-treatment stage which is then in any case accessible for agricultural use. Since this sludge is largely mineralized, it is no longer decayed, but only hygienized and z.
  • wastewater containing nitrates is returned from the aftertreatment to the biological pretreatment.
  • the invention is based on the known plant (DE-Al-31 41 889) mentioned at the outset, which has at least one primary clarifier with a primary sludge outlet that receives the incoming wastewater, a device with growth areas for biological pretreatment of the wastewater and one or has more downstream basins for biological and / or chemical-physical post-treatment of the wastewater.
  • This plant is characterized according to the invention in that the device for biological pretreatment has a sedimentation basin which is connected on the sludge side to the primary sludge discharge from the preliminary clarification basin and on the filtrate side to the downstream basin for post-treatment, and has means for controlling the loading of the growth areas.
  • the sedimentation basin for the biological pretreatment can be arranged between the pretreatment basin and the post-treatment basin, particularly in the case of new plants.
  • the pre-clarification tank itself preferably serves as the sedimentation tank for the biological pretreatment. This has the particular advantage that the biological pre-clarification stage can be retrofitted into the pre-clarification tank of existing sewage treatment plants at low cost.
  • a filter is arranged on the outlet side in the sedimentation basin of the biological pretreatment. This filter can also be installed at any time in existing pre-clarification tanks on the drain side.
  • the filter can also form the growth areas for the biological pretreatment by immersing only part of its area in the waste water.
  • the filter can be designed as a circumferential immersion filter (drum filter, disc filter or the like) in order to provide the necessary oxygen supply to the residue that forms on the filter.
  • the oxygen supply can be controlled by controlling the circulation speed, the immersion depth or, if necessary, additional aeration, and also by controlling the filter cake starch, which at the same time controls the material conversion in the biological pre-clarification stage.
  • the filter cake thickness can be regulated by rotating scrapers for rotating filters, and by rotating scrapers for fixed filters.
  • the growth areas for the biological pretreatment can be formed by rotating immersion bodies, the filter then being connected downstream of the immersion bodies.
  • the immersion bodies can be designed as immersion trickling bodies, as disc immersion bodies or as material fill.
  • the sludge peeling off from the immersion body and / or retained by the filter is - when used in the - pre-clarification basin - detected by the sludge conveyor there and conveyed together with the primary sludge into the sludge collecting trough.
  • the filtrate accumulating behind the filter (mechanically and biologically pre-treated wastewater) reaches the biological and / or chemical-physical post-treatment stage.
  • Figure 1 is a flow diagram of an overall sewage treatment plant with a built-in biological pre-treatment stage
  • FIG. 2 shows a plan view of a preliminary clarification tank with a biological preliminary clarification stage
  • Figure 3 shows a section III-III of Figure 2
  • Figure 4 shows a section IV-IV according to Figure 2;
  • FIG. 5 shows a partial section through a round basin with a biological preliminary clarification stage
  • FIG. 6 shows a section of a further embodiment of the primary clarifier with a biological primary clarifier
  • FIG. 7 shows a further embodiment of the clarifier compared to FIG. 6.
  • the wastewater treatment plant shown schematically in the flow diagram in FIG. 1, which has only an exemplary character, has a lifting unit 2 at the wastewater inlet 1 and then, as the first separating device, a rake 3 which separates the large-sized cargo from the wastewater.
  • the wastewater then passes into a sand trap 4 and from there into a pre-clarification basin 5, in which particles and suspended matter are sedimented with a predetermined dwell time.
  • a clearing device 6 is arranged in the primary clarifier 5, which conveys the sediment to the sludge collecting trough 7.
  • a device 8 for biological pretreatment of the wastewater is arranged in the primary clarifier 6, which will be described in detail later.
  • the pre-clarified wastewater flows from the pre-clarification tank 5 into an activation tank 11, which is supplied with oxygen via a compressed air device, the wastewater being circulated at the same time.
  • the activation tank 11 is followed by a flotation tank 12 in which further wastewater constituents are converted into particles by means of precipitating and flocculating agents and are either deposited on the bottom or made to float. From the flotation basin 12, the cleaned waste water arrives at 13 in the receiving water.
  • FIGS. 2 to 4 show a first embodiment for a combined physical-biological preliminary clarification in a single preliminary clarification basin 5.
  • the primary clarifier has the device 8 for biological pretreatment, which is designed as a highly loaded biological stage.
  • the device has two disc-shaped filters 23 arranged next to one another, each of which sits on a shaft 24, is rotated by means of a drive (not shown) and to which fixed wipers 25 are also assigned.
  • the shaft 24 can be mounted in the outlet-side wall of the primary clarifier 5, on the other hand on a diving wall 26 crossing the primary clarifier ...
  • the primary clarifier 5 has a base 27 which separates the sedimentation section 20 from the one behind Separates the drain chamber 28 lying in the filter 23 by enclosing the disk-shaped filters 23, as can be seen in FIG. 4, on the lower part of their circumference.
  • a pump 29 is installed in the discharge chamber 28 and conveys the filtrate to the next clarification stage.
  • the disk-shaped filters 23, which are designed as immersion disks, run with part of their surface area in the ambient air, absorb oxygen there and transport it below the water level. In this way, the filters 23 also form the growth areas for the microorganisms.
  • the filter resistance is increased as it grows up, so that there is a lowering of the level in the drainage chamber 28.
  • the biomass that forms on the filters 23 is released by the hydraulic stress and sinks over the base 27 into the sedimentation path 20 in order to be gripped there by the lower run 22 of the clearing chain 21 and to be transported into the collecting trough 7. If necessary, the filter resistance can be checked by checking the; Growth, e.g. B. od. The like can be controlled.
  • the filter 23 not only removes organic and inorganic suspended solids from the waste water, but also converts easily dissolved organic compounds into biomass.
  • the circulating speed of the filter disks or the distance or pressure from wipers or a filter rinsing which may also be possible can be controlled in such a way that a certain limit water level is not exceeded in the pre-clarifier on sedimentation section 20.
  • the differential pressure between the sedimentation section 20 and the outlet chamber 28 can be influenced by controlling the pump 29.
  • FIG. 5 Another embodiment is shown in FIG. 5, in which the primary clarifier 5 is formed by the inner chamber of a two-chamber circular clarifier 30, while the outer chamber 31 forms the biological secondary clarifier.
  • the primary clarifier 5 is connected to the activation tank 31 via an overflow 32.
  • a scraper bridge 33 runs on the circular clarification tank 30, on which a compressed air supply 34 is laid, which ensures the necessary supply of oxygen in the activation tank 31.
  • a filter 23 is again inserted in the primary clarifier 5, which in this case is designed to be stationary again and in turn forms growth areas for the microorganisms.
  • the filter 23 is also on the inlet side Assigned scraper 35, which sits on the scraper bridge 33 and ensures constant growth on the filter 23 as it rotates. Furthermore, the filter resistance can be influenced or the filter 23 can be cleaned via a branch line 36 of the compressed air supply 34.
  • FIG. 6 shows a pre-settling tank 5 with a sedimentation section 20, which is shown in the drawing in a shortened form, and a biological pre-settling stage 8 arranged on the discharge side the biological pre-clarification stage 8 extends.
  • the device for biological pretreatment has a plurality of immersion drip bodies 37 arranged one behind the other, which are seated on a shaft 38 which is driven at variable speeds, of which several can optionally be arranged parallel to one another.
  • These immersion droplets form the growth surface for the microorganisms. They run with the majority of their surfaces in the ambient air and only dip into the wastewater with their lower third. They are separated from the sedimentation section 20 by an upper weir 39, so that the wastewater behind it is calmed.
  • a filter 23 in the form of a drum filter is arranged in the primary settling tank 5, but in this case it is designed exclusively as a mechanical filter, extends over the entire width of the primary settling tank and on the inside is provided with a wastewater drain 40 leading into the subsequent tanks is.
  • the filter cake settling on the filter can be sucked off via a suction box 43 by means of a level-controlled pump 41 and can be returned via a line 44 to the inlet of the primary settling tank in order to be at least partially settled on the sedimentation section 20.
  • the embodiment according to FIG. 7 essentially corresponds to that according to FIG. 6. It differs from this only in that the biological growth areas in the preliminary clarification stage 8 are formed by disc immersion bodies 42, which are placed in a packet-like manner on transverse drive shafts 43.
  • a further pump (not shown) can also be provided in the area of the biological pretreatment to control the immersion depth of the growth areas.
  • a line for returning nitrate-containing waste water into the biological pretreatment can be provided for denitrification between a downstream settling tank and the inlet of the primary clarifier 5.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Molecular Biology (AREA)
  • Health & Medical Sciences (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Activated Sludge Processes (AREA)

Abstract

Procédé de purification des eaux usées, dans lequel est prévu, en plus d'une clarification préliminaire (5) physique avec formation d'une boue primaire biologique, un traitement préalable biologique (8) dans lequel la conversion de la matière est régulée afin de moduler la charge dans les étapes ultérieures du traitement. La boue produite lors du traitement préalable biologique est séparée des eaux usées par des filtres (23) et acheminée vers la boue primaire. Le traitement préalable biologique permet d'éliminer des eaux usées des matières organiques et inorganiques en suspension ainsi que des composés organiques facilement convertibles et dissous, de sorte qu'ils n'apparaissent pas dans la charge lors des étapes ultérieures du traitement. En régulant la conversion de la matière, il est possible de faire varier d'une manière spécifique la charge des étapes ultérieures du traitement, par exemple de la maintenir constante quelles que soient les conditions d'alimentation lors de l'étape de clarification préliminaire. Si un traitement biologique ultérieur est effectué, il est possible de moduler l'équilibre des substances nutritives lors de l'étape de clarification ultérieure en régulant la conversion de la matière lors de l'étape de clarification préliminaire.
PCT/EP1986/000715 1985-12-09 1986-12-06 Procede et installation de purification des eaux usees Ceased WO1987003574A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853543432 DE3543432A1 (de) 1985-12-09 1985-12-09 Anlage fuer die biologische aufbereitung von abwasser
DEP3543432.5 1985-12-09

Publications (1)

Publication Number Publication Date
WO1987003574A1 true WO1987003574A1 (fr) 1987-06-18

Family

ID=6287993

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1986/000715 Ceased WO1987003574A1 (fr) 1985-12-09 1986-12-06 Procede et installation de purification des eaux usees

Country Status (4)

Country Link
EP (1) EP0265442A1 (fr)
AU (1) AU6840387A (fr)
DE (1) DE3543432A1 (fr)
WO (1) WO1987003574A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0256432A3 (fr) * 1986-08-12 1989-01-25 Mecapec S.A. Procédé pour le traitement biologique d'eau usée
JP2007532302A (ja) * 2004-04-14 2007-11-15 ソルヴェイ（ソシエテ アノニム） スラッジの処理方法
CN115382285A (zh) * 2022-09-05 2022-11-25 中煤科工集团重庆研究院有限公司 一种煤矿井下供水管路过滤器反冲洗系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4116919A1 (de) * 1991-05-24 1992-11-26 Henninger Geier Waltraud Verfahren und vorrichtung zur vorklaerung von schmutzwasser
DE9300384U1 (de) * 1993-01-14 1993-03-25 Kary GmbH, 2800 Bremen Vorrichtung zur Reinigung kommunaler Abwässer
DE19845808C1 (de) * 1998-09-30 2000-07-13 Wilk Bernd Ulrich Verfahren und Vorrichtung zur biologischen Reinigung von Abwasser
DE102014104314B4 (de) * 2014-03-27 2017-08-17 Pro-Entec Umweltschutz Gmbh Verfahren zum Behandeln von Deponiesickerwasser sowie Deponiesickerwasser-Aufbereitungsanlage

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DE1961201A1 (de) * 1968-12-05 1970-06-18 Allis Chalmers Mfg Co Biologische Abwasserbehandlung
US3703961A (en) * 1970-02-18 1972-11-28 Aqua Treatment Ind Inc Rotary biological flow-through filter
FR2169266A1 (fr) * 1972-01-26 1973-09-07 Europ Plastic Machinery Mfg
DE2308853A1 (de) * 1973-02-22 1974-09-05 Frings Fa Heinrich Verfahren und vorrichtung zur mehrstufigen abwasserreinigung nach dem belebungsverfahren
CH561666A5 (en) * 1974-01-28 1975-05-15 Weber Hans Biological effluent treatment plant - combining activated sludge and trickling filter processes
DE2640875A1 (de) * 1976-09-10 1978-03-16 Hubert & Co Maschf Zweistufiges belebtschlammverfahren
EP0004528A2 (fr) * 1978-03-31 1979-10-17 Toray Industries, Inc. Traitement biologique d'eau résiduaire
DE3150902A1 (de) * 1981-12-22 1983-06-30 Linde Ag, 6200 Wiesbaden Verfahren und vorrichtung zur biologischen reinigung von abwasser
DE3208173A1 (de) * 1982-03-06 1983-09-08 Volker Dipl.-Ing. 7200 Tuttlingen Stengelin Verfahren und vorrichtung zum entfernen des stickstoffs aus dem abwasser mittels tauchtropfkoerper

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DE3025653A1 (de) * 1980-07-07 1982-01-28 Wilhelm Roediger Gmbh + Co, 6450 Hanau Belebtschlammanlage
DE3141889C2 (de) * 1981-10-22 1984-05-30 Böhnke, Botho, Prof. Dr.-Ing., 5100 Aachen Verfahren zum Betrieb einer Teichbelüftungsanlage
DE3243626A1 (de) * 1982-11-25 1984-06-14 Bick, Heinrich, 3520 Hofgeismar Behaelter oder becken kuenstlicher oder natuerlicher bauart, insbesondere belebungsbehaelter bzw. belebungsbecken zur reinigung von abwasser

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1961201A1 (de) * 1968-12-05 1970-06-18 Allis Chalmers Mfg Co Biologische Abwasserbehandlung
US3703961A (en) * 1970-02-18 1972-11-28 Aqua Treatment Ind Inc Rotary biological flow-through filter
FR2169266A1 (fr) * 1972-01-26 1973-09-07 Europ Plastic Machinery Mfg
DE2308853A1 (de) * 1973-02-22 1974-09-05 Frings Fa Heinrich Verfahren und vorrichtung zur mehrstufigen abwasserreinigung nach dem belebungsverfahren
CH561666A5 (en) * 1974-01-28 1975-05-15 Weber Hans Biological effluent treatment plant - combining activated sludge and trickling filter processes
DE2640875A1 (de) * 1976-09-10 1978-03-16 Hubert & Co Maschf Zweistufiges belebtschlammverfahren
EP0004528A2 (fr) * 1978-03-31 1979-10-17 Toray Industries, Inc. Traitement biologique d'eau résiduaire
DE3150902A1 (de) * 1981-12-22 1983-06-30 Linde Ag, 6200 Wiesbaden Verfahren und vorrichtung zur biologischen reinigung von abwasser
DE3208173A1 (de) * 1982-03-06 1983-09-08 Volker Dipl.-Ing. 7200 Tuttlingen Stengelin Verfahren und vorrichtung zum entfernen des stickstoffs aus dem abwasser mittels tauchtropfkoerper

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* Cited by examiner, † Cited by third party
Title
Lehr-und Handbuch der Abwassertechnik, 3rd edition, Vol. IV, ATV, 1985, (St. Augustin, DE) page 216, paragraph 2.6.7.2 "Siebanlagen" *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0256432A3 (fr) * 1986-08-12 1989-01-25 Mecapec S.A. Procédé pour le traitement biologique d'eau usée
JP2007532302A (ja) * 2004-04-14 2007-11-15 ソルヴェイ（ソシエテ アノニム） スラッジの処理方法
AU2005232901B2 (en) * 2004-04-14 2010-02-18 Solvay (Societe Anonyme) Process for the treatment of sludge
CN115382285A (zh) * 2022-09-05 2022-11-25 中煤科工集团重庆研究院有限公司 一种煤矿井下供水管路过滤器反冲洗系统

Also Published As

Publication number Publication date
DE3543432A1 (de) 1987-06-11
EP0265442A1 (fr) 1988-05-04
AU6840387A (en) 1987-06-30

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