EP0944553A1 - Bioreacteur - Google Patents

Bioreacteur

Info

Publication number
EP0944553A1
EP0944553A1 EP97940085A EP97940085A EP0944553A1 EP 0944553 A1 EP0944553 A1 EP 0944553A1 EP 97940085 A EP97940085 A EP 97940085A EP 97940085 A EP97940085 A EP 97940085A EP 0944553 A1 EP0944553 A1 EP 0944553A1
Authority
EP
European Patent Office
Prior art keywords
bioreactor
water
bioreactor according
fixed bed
outlet
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Withdrawn
Application number
EP97940085A
Other languages
German (de)
English (en)
Inventor
Wolfgang Schenk
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.)
Wolfgang Schenk GmbH
Original Assignee
Wolfgang Schenk GmbH
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
Priority claimed from DE1996133322 external-priority patent/DE19633322C1/de
Application filed by Wolfgang Schenk GmbH filed Critical Wolfgang Schenk GmbH
Publication of EP0944553A1 publication Critical patent/EP0944553A1/fr
Withdrawn legal-status Critical Current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
    • C02F3/02—Aerobic processes
    • C02F3/06—Aerobic processes using submerged filters
    • 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
    • C02F3/10—Packings; Fillings; Grids
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/44—Nature of the water, waste water, sewage or sludge to be treated from vehicle washing facilities
    • 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 bioreactor for the treatment of water contaminated with organic substances, in particular from car washes, in which the reactor vessel has a fixed bed which consists of a porous carrier material which is adsorbable and porous for the organic constituents of the waste water and which is known per se, the organic constituents of water-degrading microorganisms is populated.
  • washing waste water from car wash systems is then mechanically cleaned in a sludge trap, largely freed from mineral oil hydrocarbons in a light liquid cutter, collected in a storage basin and fed into the sewage system via a control shaft. Further stages, such as chemical and / or biological treatment, can be included in the washing wastewater treatment and serve to reduce the fresh water requirement.
  • the washing waste water from a vehicle washing system which biodegradable cleaning and care products and solid substances contains, cleaned by adding a polymeric flocculant to the wastewater and first passing it through a sedimentation zone with reduced water flow and then through an adsorbent.
  • DE-C-41 16 082 describes a method of water treatment in car washes, in which the wash water obtained is mechanically or mechanically and biologically cleaned and returned to the washing system.
  • the solids resulting from mechanical cleaning are collected in waste batches requiring disposal.
  • the pollutants are mechanically or biologically processed in a multi-stage process in such a way that solids with hydrocarbons and pollutants from the wastewater coming from the car wash are separated and collected in a first cycle, so that when collecting the hydrocarbons and pollutants with washing substances containing wastewater are extracted from the washing zone and that the mechanically clarified wastewater is freed from non-degradable components in a second circuit by flotation and by biological reaction.
  • the common disadvantage of the known methods is that the washing waste water has to be processed in complex multi-stage processes.
  • the resulting solids usually flotates and sand and sludge washed off the vehicles, have to be disposed of as special waste batches.
  • the water and the solids accumulating in the system are contaminated with odor, which can be extremely and annoying.
  • the reuse of the cleaned washing water requires a high proportion of fresh water.
  • the excess water is fed into the municipal wastewater treatment system via a sewer connection. It has been shown that these shortcomings are mainly due to an ineffective biological treatment of the wash water.
  • the invention is therefore based on the object of increasing the effectiveness of the biological treatment of the washing waste water for complete reuse.
  • the preparation must be able to be resumed without problems even after periods of low washing activity. This is to be achieved by providing an effectively working bioreactor that is tailored to the requirements in treatment plants for car washes.
  • the object is achieved with a bioreactor of the type mentioned at the outset, in which the fixed bed is located on a permeable support, a water collection space is provided below the fixed bed, which is connected upstream of the outflow for the treated water, the outflow being simultaneously designed as a backwashing inlet and an inlet and a backwash outlet are provided above the fixed bed.
  • the bioreactor according to the invention is filled with a fixed bed material which is suitable for adsorbing mineral oil hydrocarbons and car care products, and also has a porosity and surface which requires the settlement of microorganisms. These colonization zones are necessary so that the bacterial turf that forms is not torn off by the shear forces of the water flowing through and is carried away from the system.
  • a water collection space is formed below the fixed bed and separated from the fixed bed by a permeable support, such as sieve gauze, so that the fixed bed material is not discharged from the working zone. From this water collection chamber, the water is either pumped sideways through the tank wall or upwards through a specially inserted pipe.
  • the inlet and outlet is designed by inlet and outlet spiders so that a uniform water distribution and uniform flow behavior is achieved both in normal operation and during backwashing.
  • the bioreactor according to the invention is used in a process which has a mechanical and a biologically working treatment stage.
  • the mechanical treatment stage consists of the sludge trap, in which there is sedimentation of the coarse dirt carried along.
  • these are mineral particles, but are often contaminated by mineral oil products.
  • Coarser mineral oil particles for example from the wax or underbody protection of a motor vehicle, also get into the sludge trap.
  • a considerable amount of biological processing of the sludge load takes place in the sludge trap. Due to the backwashing of the filter system and the bioreactor described later, mineral oil-degrading microorganisms repeatedly enter the sludge trap, which settle there and fulfill their purpose.
  • the waste water After passing through the sludge trap, the waste water enters a storage basin which essentially serves as a buffer and from which water is continuously pumped through a filter system into the bioreactor according to the invention.
  • the buffer effect of the storage basin has two aspects, firstly a quantity aspect, since a continuous wastewater flow must be delivered to the bioreactor even when the frequency of use of the car wash system changes.
  • the storage basin also serves as a dilution basin for highly concentrated dirt loads that arise when cleaning particularly dirty motor vehicles or those contaminated with special pollutants.
  • the filter system is a conventional filter for removing suspended matter, which consists, for example, of several alternating layers of coarse and fine gravel fillings.
  • the suspended matter filter can be flowed through with or against gravity by the waste water and has to be backwashed with clean water every now and then or replaced.
  • the filling of the particulate filter is conveniently stored on perforated plates or the like, under which the outlet is located.
  • the bioreactor according to the invention connected downstream of the suspended matter filter is traversed by gravity from the waste water and accommodates on its carrier material the microorganisms which break down the dirt load in the waste water which occurs in a car wash. These are generally aerobic bacteria that are known per se and can also be obtained using known selection mechanisms.
  • the pure water emerging from the bioreactor is then collected in a pure water tank and from there it is reused in the car wash.
  • the bioreactor consists of a fixed bed made of a porous carrier material that can adsorb the organic constituents of the wastewater and provides the necessary microorganisms with sufficient support for settlement.
  • the microorganisms form a lawn on the surface of the carrier material and in the pores, which filters the sewage flowing past and absorbs the dirt contained therein.
  • the adsorption effect of the carrier material demands this effect by supplying the components adsorbed from the wastewater to the microorganisms.
  • the porous carrier material is expediently in the form of a pouring bed which, apart from the pure pore space, offers additional space between the individual carrier particles.
  • Suitable porous Support materials are, for example, coal, clay, silica gel or zeolites in pelletized form or else foam plastic flakes with a sufficiently large pore volume, for example made of polyurethane, polystyrene or the like.
  • a particularly suitable material has, for example, a particle size of 1 to 10 mm, a vibrating density of 0.25 to 1.0 g / cm 3 , a pore volume of 0.40 to 1.0 cm 3 / g and a surface area of more than 500 m / g.
  • other materials with comparable physical properties can also be used.
  • the bioreactor must be backwashed regularly to prevent it from clogging with suspended particles or from being blocked by excessive bacterial growth.
  • the bioreactor is backwashed in such a way that the rinsed-out materials are carried back into the sludge trap, where the mineral oil-degrading bacteria washed in there can in turn act.
  • the bioreactor is operated aerobically.
  • the amount of oxygen contained in the wash water is usually not sufficient for this. It is therefore advisable to introduce oxygen or air into the bioreactor, expediently via an air injector.
  • part of the water running out of the bioreactor is branched off, saturated with air and returned to the bioreactor.
  • a pure water tank collects the pure water running out of the bioreactor and makes it available for reuse in the washing cycle.
  • a sufficiently large volume ensures that sufficient water is available both for cleaning purposes and for the treatment process (backwashing, after-running).
  • the pure water delivered to the washing system can first be sterilized by disinfection, for example with the aid of UV radiation.
  • the care products used in the washing process have no biostatic or biocidal constituents and are completely biodegradable.
  • the rate of biodegradation must be taken into account when dimensioning the processing plant; The faster the degradability, the smaller the storage basin, the bioreactor and the clean water tank can be designed within certain limits. It has been shown that for an average car wash, sludge trap and storage basin as well as clean water tank should have a collection volume of 6 m and the filter unit and the bioreactor have a capacity of 1 to 1.5 m 3.
  • the materials used for all lines and containers are both Corrosion-resistant metals as well as plastics that meet the requirements, in particular glass-fiber reinforced plastics or HDPE.
  • the washing waste water obtained in a washing plant is fed to a storage basin via a sludge trap known per se and from this via a suspended matter filter aerobically operated bioreactor.
  • the carrier material of the fixed bed is porous, has a large specific surface area, can adsorb water contents and serves for the settlement of special microorganisms.
  • the water in the reactor is constantly circulated by means of a circulating pump and enriched with a suitable device, preferably an injector, without pressure with oxygen, preferably atmospheric oxygen from the surrounding atmosphere.
  • the circulation speed can be varied within a wide range. It must be dimensioned so that the biofilms are not damaged.
  • the washing waste water arrives from the biroeactor via an overflow control in a pure water tank. From here it is fed back to the washing process 100%, possibly via a disinfection system.
  • the bioreactor according to the invention is suitable for taking up and treating contaminated water from the workshop area and petrol pump area of a petrol station. It is therefore understood that such additional wastewater can be used in addition to the wastewater generated in the car wash. In this respect, the bioreactor according to the invention is suitable for replacing the systems for treating rainwater required for petrol stations. Otherwise, the reactor according to the invention can also be used advantageously in other ways.
  • the reactor vessel Regularly one chooses for the reactor vessel because of its load, above all because of the content of waste water after the optimal container design for such static loads in vessel and apparatus construction as a cylinder with a preferably curved base and lid and from metal sheets in welded constructions.
  • the reactor vessel and, if applicable, the assemblies of the processing plant which interact with it must be accommodated in a closed space which is preferably optimally arranged directly next to the car wash in car washes. Due to the limited room heights, the resulting wastewater volumes have cylinder diameters that are larger than the usual door openings, but which are a requirement on site.
  • the plan of the reactor vessel adheres to the on-site specifications in a predetermined area dimension, that is, in the example given, corresponds to the mostly standardized door opening of the exhibition space, which is used as the basic size in the plan of the vessel according to the invention can be.
  • the invention therefore has the advantage that it allows the client in the choice of the building and in particular in the choice of the area dimension of the installation of the processing plant, a wide range of design freedom and does not require any final or temporary changes to the structure to adapt to the assembly and installation of the reactor vessel .
  • embodiments of the invention according to claim 13 are best suited for the shaping of the reactor vessel in order to meet the on-site requirements. If one takes the standardized door opening of 80 cm as a basis, one usually comes to an almost square, square floor plan, although of course other floor plan forms are also possible in order to take advantage of the invention. In the intended case, the shorter side of the rectangle is the area dimension of the container floor plan that is predefined on site.
  • the container specifications resulting from the load on the reactor vessel can also be met with vessel shapes that do not correspond to the usual cylindrical shape. This is in the claim
  • the flat walls and bottom of such a container also have another advantage.
  • the number of containers resulting from the modular system can be set up wall to wall in a space-saving manner. That applies even if only one module is used for such a system.
  • the polygonal floor plan can be accommodated in given building floor plans better than the usual circular cross section of containers.
  • the wall-to-wall arrangement of several modules therefore makes optimal use of the space available for standard room layouts, especially if the container layout is rectangular to square. It is then advisable, however, to make use of the features of claim 16, since the optimal assignment of several modules of the modular system with a base frame is thereby forced.
  • Fig. 1 shows schematically an embodiment of the bioreactor according to the invention
  • FIG. 2 shows the integration of the bioreactor according to the invention according to FIG. 1 into an overall system for wastewater treatment
  • Fig. 3 details of a preferred embodiment of the backwashing process of the bioreactor according to the invention
  • Fig. 4 shows a schematic representation of the arrangement of two modules
  • 1 consists of the reactor vessel 8, which in turn is divided into three sections, a lower water collection space 46, the fixed bed 48 and an upper inflow space 49.
  • a permeable support is located between the lower water collection space 46 and the fixed bed 48
  • 1 9 47 for example made of sieve gauze or a perforated plate, which reliably prevents the fixed bed filling from passing through.
  • a delimitation of the upper inlet space 49 from the fixed bed 48 is only necessary if the fixed bed filling consists of a specifically light material that floats in the backwashing stream under normal conditions. In this case, a water-permeable membrane can also be drawn in there.
  • the water to be treated passes through lines 27 and 29 to the distribution spider 24 in the upper inlet space 49. After passing through the fixed bed 48, it is drawn off from the lower water collection space 46 via the extraction spider and the line 30 by means of a pump 31.
  • the pure water from line 30 is mixed with air via line 32 and injector 10 before it passes through valve 35 into a clean water tank.
  • the line pressure within the system is constantly monitored; a pressure measuring point 40 determines the pressure in line 30 and is used to calculate the differential pressure between inlet and outlet from the bioreactor ⁇ . If the pressure in the line 30 drops relative to the inlet pressure, which indicates a clogging of the fixed bed, the backwash system is activated, in which, after opening and closing the corresponding valves via line 17, pure water is pressed into the discharge line 30, which causes the Flow direction reversed. The pure water passes through the spider 26 into the lower collecting space and presses from below through the fixed bed 48 into the upper distribution space 49, from where it passes over the overflow
  • a fill level control 25 with various measuring points serves to monitor the water level in the bioreactor 8 and is connected via a control line S to the pump 31 and a control center. In normal operation, the water level is constantly kept between the two measuring points in the upper inlet space 49. Another measuring point in the lower collecting space 46 is required if the fixed bed 48 is driven dry for maintenance or for other reasons.
  • Fig. 2 shows the overall process.
  • the same numbers denote the same positions.
  • the dashed lines indicate control lines for operating the system.
  • the wastewater from the washing plant, a workshop or the surface drain water of a gas station area comes via the feed line 1 into the sludge trap 2, where the sedimentation of the coarse dirt takes place.
  • the line 21 continues into the storage basin 3, which serves as a buffer for the wastewater freed from coarse dirt.
  • a level control 4 with an upper and a lower switching point.
  • the water from the storage basin 3 is fed through the line 22 into the suspended matter filter 7 via a suction body 5 and the feed pump 6, which form a unit in the present embodiment.
  • the water from the storage basin 3 enters the suspended matter filter 7 via a distribution spider 24.
  • the filter is filled with alternating layers of coarser and finer gravel, which the sewage traverses from top to bottom.
  • Via a spider 26, the filtered waste water is pumped through line 27 with the aid of pump 9.
  • a fill level control 25 prevents this Dry running of the filter device, but also has a lower switching point with which the filter device can be more or less completely emptied.
  • An overflow 28 leads via line 14 back into the sludge trap 2 and is required in the case of backwashing the filter 7.
  • the water withdrawn from the filter via the spider 26 reaches the bioreactor 8 via the line 27 and the pump 9 as well as the line 29, where it is applied to the surface of the porous carrier material therein, expediently activated carbon pellets with a large pore volume and sufficient empty space between the individual particles.
  • the porous carrier material is populated with the microorganisms conditioned on the organic dirt load of the wastewater.
  • the waste water passes through the fixed bed of the bioreactor from top to bottom and is fed to the clean water tank 11 via the spider 26 of the bioreactor 8 via the line 30 with the aid of the pump 31.
  • a fill level control 25 ensures, corresponding to the suspended matter filter 7, that the bioreactor 8 is adequately filled.
  • An injector switched on in line 30 injects air drawn in via line 32 into the water drawn off from bioreactor 8.
  • the water saturated with air is fed via a line 30 to the clean water tank 11, but also partially returned via line 33 to the bioreactor, where it ensures an adequate oxygen supply to the reactor and the microorganisms.
  • Solenoid valves 34 and 35 ensure the correct distribution ratio of air-saturated water between bioreactor 8 and pure water tank 11.
  • batch-wise operation of bioreactor 8 is also possible, in which a circuit through line 33 takes over the air supply. Only the completely clarified water is added to the tank 11.
  • the pure water tank 11 receives the biologically clarified water from the bioreactor 8.
  • a level control 36 ensures that the clean water tank is filled with a sufficient amount of water to the To be able to maintain the washing operation as well as the night cycle operation. In the event that there is too little water in the circuit, fresh water can be supplied via line 12.
  • the water is drawn off from the pure water tank 11 via the line 37 with the aid of the pump 15 and fed to the running line 13 into the washing system.
  • a pressure measuring device 39 is used to monitor and control the pressure.
  • An outlet 38 alternatively leads into the sewage system and serves to drain off excess water in times of above-average water accumulation. This is particularly expedient if the treatment plant also treats surface water from a gas station area and is exposed to large amounts of water due to heavy rainfall. Otherwise the system works in 100 cycle operation.
  • a backwashing process is initiated from the pure water tank 11 via lines 37, pump 15 and lines 16 and 17 into the suspended matter filter 7 and the bioreactor 8.
  • the water enters the reactors via the lower spider 26 and rinses the dirt particles or biomass via the overflow 28 and the line 14 into the sludge trap 2.
  • microorganisms also get into the Sludge trap 2 and can colonize it and cause biological treatment of the sedimented dirt.
  • a water circuit is preferably kept in operation in order to keep the suspended matter filter and the bioreactor in operation.
  • This cycle begins in the pure water tank 11 and runs via the line 37, the pump 15 and the line 43 back into the storage basin 3.
  • the gastric valve 44 is activated via the central control device.
  • the check valves 41 and 42 to the washing system and in the backwash lines are blocked.
  • the cycle then runs, as in normal treatment operation, from the storage basin 3 via the suspended matter filter 7 and the bioreactor 8 into the pure water tank.
  • the quality of the water in the circuit and the switched-on containers gradually approaches the quality of the water in the pure water tank 11.
  • the backwashing water is led from a pure water tank via line 30 into the lower collecting space 46. From the collecting space 46, it enters the fixed bed 48 through the sieve gauze 47, rinses it and flushes residues and non-firmly adhering microorganisms into the upper space 49.
  • the backwashing water runs out via the overflow 28, which is bowl-shaped - or funnel-shaped and opens into the drain line 14.
  • the bowl-shaped or funnel-shaped design of the overflow 28 with an upwardly tapering cross section leads to an acceleration of the water flow on the way up, so that the torn particles accelerate and over the edge of the overflow 28 into the bowl and from there into the line 14 be performed.
  • the backwashing flow therefore runs relatively evenly in the area of the fixed bed and directly above and only accelerates in the upper area so that the dirt particles can be conveyed specifically into the overflow.
  • two reactor vessels 50 and 51 are required for the bioreactor 8 for a given treatment plant.
  • the two containers 50 and 51 are identical in shape and content. Each of the containers corresponds to the module of a modular system, which by multiplying the modules corresponds to the on-site capacity of the processing plant.
  • the plan of the reactor vessel 8 consists of the plan of the two modules 50 and 51, it corresponds to twice the plan of the two modules, the outline of which is formed by shorter sides of the rectangle 52, 53 and longer sides of the rectangle 54, 56.
  • the length of the shorter sides of the rectangle 52, 53 corresponds in the exemplary embodiment to an on-site specification that results, for example, from a standardized door opening of 80 cm, through which the two modules would have to fit if they were installed in a room whose access is determined by the door opening .
  • the further surface dimensions are predetermined by the rectangle sides 54, 56 of equal length, which, taking into account the container height H, results from the desired container volume.
  • the container height is therefore usually also determined by the assembly and / or the room height.
  • the multiplication of the containers 50 and 51 then results in the on-site predetermined capacity of the processing plant. While the container layout is specified by the dimension L specified by the customer, the rectangular container dimension 1 can be selected for the module.
  • each capacity of the processing plant can be managed with the modules 50 and 51.
  • the container has flat rising walls 57 to 60 and a flat bottom not shown in FIGS. 4 and 5.
  • the rising walls 57 and 58 are made of thermoplastic material in the form of plates 61 and 61 of the same thickness. These plates are on each other associated edges at 63 with a weld seam arranged at 64 connected materially to one another. Together with the sufficiently dimensioned plate thickness, these material-tight connections result in a dimensionally stable container that is able to carry the loads to be absorbed almost without deformation.
  • a so-called high-pressure polyethylene can be used as the thermoplastic.
  • a base frame 65 composed of metal profiles 65 is provided in a rigid manner.
  • the frame members some of which are shown at 66 to 68, can also be assembled in the corners to form a frame by means of material connections, in particular welds, in a rigid manner.

Landscapes

  • 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)
  • Biological Treatment Of Waste Water (AREA)

Abstract

L'invention concerne un bioréacteur (8) pour le traitement de l'eau chargée de matières organiques, provenant notamment de stations de lavage automatique, dans lequel la cuve de réacteur comporte un lit fixe (48) constitué d'un matériau support poreux et apte à l'adsorption des matières organiques des eaux résiduaires. Ce matériau support est colonisé par des micro-organismes, connus en soi, qui décomposent les matières organiques de l'eau. Le lit fixe (48) se trouve sur un support perméable (47), et au-dessous de ce lit fixe est disposé un espace collecteur d'eau (46) placé en amont de l'évacuation destinée à l'eau traitée. Cette évacuation (26) joue en même temps le rôle d'arrivée de rétrolavage, et au-dessus du lit fixe (48) se trouvent une arrivée (24) ainsi qu'une évacuation de rétrolavage (28).
EP97940085A 1996-08-19 1997-08-16 Bioreacteur Withdrawn EP0944553A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19633322 1996-08-19
DE1996133322 DE19633322C1 (de) 1996-08-19 1996-08-19 Verfahren und Anlage zur Abwasseraufbereitung
DE29708261U 1997-05-09
DE1997208261 DE29708261U1 (de) 1996-08-19 1997-05-09 Bioreaktor
PCT/EP1997/004481 WO1998007662A1 (fr) 1996-08-19 1997-08-16 Bioreacteur

Publications (1)

Publication Number Publication Date
EP0944553A1 true EP0944553A1 (fr) 1999-09-29

Family

ID=26028533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97940085A Withdrawn EP0944553A1 (fr) 1996-08-19 1997-08-16 Bioreacteur

Country Status (11)

Country Link
EP (1) EP0944553A1 (fr)
JP (1) JP2000503896A (fr)
AU (1) AU4205497A (fr)
CA (1) CA2263668A1 (fr)
CZ (1) CZ53999A3 (fr)
EA (1) EA001562B1 (fr)
HU (1) HUP9903778A3 (fr)
NO (1) NO990764L (fr)
PL (1) PL331855A1 (fr)
SK (1) SK19699A3 (fr)
WO (1) WO1998007662A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2779712B1 (fr) * 1998-06-16 2000-09-01 Labo Bucs Laboratoire De Biote Procede et installation de traitement biologique en continu d'effluents liquides
NO20092151A (no) * 2009-06-03 2010-11-29 Biowater Tech As Fremgangsmåte og reaktor for behandling av vann
WO2016077715A1 (fr) * 2014-11-14 2016-05-19 Plava Pur, Llc Traitement d'eau biologique pour gestion de déchets

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3968034A (en) * 1970-12-02 1976-07-06 Jerzy Tymoszczuk Process and apparatus for treating wastes by a combined activated sludge and biological filter bed
US4693831A (en) * 1987-01-28 1987-09-15 Zimpro Inc. Rise-rate control of pulsed-bed granular medium filters
AT392636B (de) * 1988-07-08 1991-05-10 Waagner Biro Ag Biologisches filter fuer wasserreinigungsanlagen
WO1992015667A1 (fr) * 1991-03-08 1992-09-17 Memtec Limited Procedes de reaction biologique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9807662A1 *

Also Published As

Publication number Publication date
CZ53999A3 (cs) 1999-07-14
EA199900213A1 (ru) 1999-08-26
NO990764D0 (no) 1999-02-18
CA2263668A1 (fr) 1998-02-26
HUP9903778A3 (en) 2000-04-28
SK19699A3 (en) 1999-11-08
WO1998007662A1 (fr) 1998-02-26
PL331855A1 (en) 1999-08-16
JP2000503896A (ja) 2000-04-04
AU4205497A (en) 1998-03-06
HUP9903778A2 (hu) 2000-03-28
NO990764L (no) 1999-02-19
EA001562B1 (ru) 2001-04-23

Similar Documents

Publication Publication Date Title
DE19648519C2 (de) Verfahren und Anlage zur Stofftrennung mittels Membranfiltration
AT412275B (de) Biologische reinigung von wasser
DE69904702T2 (de) Vorrichtung zur fest-flüssigkeittrennung, insbesondere zur biologischen reinigung von abwasser
WO1994003402A1 (fr) Procede et dispositif pour le traitement biologique d'eaux usees a charge organique et de dechets organiques
WO1979000129A1 (fr) Procede et dispositif d'epuration d'eaux usees dans une installation de filtrage a plusieurs etages
DE3428798A1 (de) Vorrichtung zur reinigung von abgas
EP0880476B1 (fr) Procede et installation pour le traitement d'eaux usees
EP0530672B1 (fr) Filtre lavable
DE202015103163U1 (de) Filteranordnung
EP0819457A1 (fr) Procédé et dispositif pour la filtration des eaux usées
DE3327774A1 (de) Verfahren und vorrichtung zur biologischen reinigung von abwasser
DE2239205A1 (de) Verfahren und vorrichtung zur abwasserreinigung
CH644569A5 (de) Verfahren und vorrichtung zum behandeln von abwasser.
WO1998007662A1 (fr) Bioreacteur
AT392636B (de) Biologisches filter fuer wasserreinigungsanlagen
DE3607520A1 (de) Verfahren und einrichtung zur anaeroben abwasserreinigung
DE19633322C1 (de) Verfahren und Anlage zur Abwasseraufbereitung
DE3138246A1 (de) Verfahren und vorrichtung zur behandlung von abwasser
EP1803688B1 (fr) Bioréacteur à membrane et procédé de traitement biologique des eaux usées huileuses
EP1434740B1 (fr) Dispositif de traitement biologique des eaux usees
DE60015557T2 (de) Verfahren und anordnung zur reinigung von wasser
EP0765293B1 (fr) Dispositif d'epuration biologique et procede d'epuration d'eaux usees faisant appel audit dispositif
AT395844B (de) Anlage zur biologischen abwasserreinigung
AT107U1 (de) Kleinklaeranlage
EP4155272A1 (fr) Installation de filtre destinée à la purification de l'eau

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19990301

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL PAYMENT 19990301;LT PAYMENT 19990301;LV PAYMENT 19990301;RO PAYMENT 19990301;SI PAYMENT 19990301

17Q First examination report despatched

Effective date: 19991011

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20010517