WO1998007663A1 - Verfahren und vorrichtung zur biologischen abwasserreinigung - Google Patents
Verfahren und vorrichtung zur biologischen abwasserreinigung Download PDFInfo
- Publication number
- WO1998007663A1 WO1998007663A1 PCT/DE1997/001773 DE9701773W WO9807663A1 WO 1998007663 A1 WO1998007663 A1 WO 1998007663A1 DE 9701773 W DE9701773 W DE 9701773W WO 9807663 A1 WO9807663 A1 WO 9807663A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- submersible
- interior
- wheel
- ambient air
- liquid
- Prior art date
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
- C02F3/08—Aerobic processes using moving contact bodies
- C02F3/082—Rotating biological contactors
-
- 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
-
- 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 method and a device according to the preambles of claims 1 and 5 for the biological wastewater treatment of municipal and / or industrial wastewater with the aid of 3iomass containing microorganisms.
- the microorganisms can be divided into two groups, namely those of the suspended and those of the sessile microorganisms.
- the difference between The groups consist in the fact that the suspended microorganisms swim or float with a relatively short generation time in the liquid containing them, containing waste water and biomass, and the sessile microorganisms, which have a longer generation time, prefer to settle on solid areas offered.
- the constituents of the wastewater are broken down by the microorganisms, that is, they are oxidized with the build-up of new biomass.
- the oxygen required for oxidation must be supplied to the liquid from the outside.
- the sessile organisms remain much longer until they are also flushed out as inactive biomass. As a result, these organisms are able to adapt and also remove substances that are difficult to decompose, such as those found in industrial wastewater or landfill leachate.
- Wastewater is treated both in relatively large sewage treatment plants and in small plants with at least one submersible wheel.
- the aim of using submersible bikes is to reduce the very high manufacturing and operating costs of the sewage treatment plants, but sufficient oxygen still gets into the sewage liquid and biomass.
- the invention has for its object to provide measures to improve the efficiency of the known methods for biological wastewater treatment and the devices required for its implementation. To achieve this object, the invention provides the features in the characterizing part of claim 1.
- atmospheric oxygen in the form of ambient air is taken up by the submersible and introduced into its interior and guided there in such a way that a rotating mixture is formed which contains at least biomass containing microorganisms, from wastewater or clarifying liquid and from ambient air containing oxygen There are air bubbles that are trapped and circulate with the mixture in the submersible.
- the residence time of the oxygen in the interior of the submersible is significantly improved compared to known methods, so that very good oxygen utilization is possible.
- a particularly intimate contact of the microorganisms with the oxygen is ensured due to its long residence time and therefore increases the efficiency of the device, which is associated with a reduction in operating costs.
- the flow circulates inside the submersible against its direction of rotation. This is achieved by the arrangement of the internals in the submersible that carry the ambient air or the mixture, which also rotates permanently at low speed.
- a further increase in efficiency is achieved according to the invention if freely movable carriers / fillers are also arranged as growth bodies for the sessile microorganisms below the liquid level and within the bubbling air in the submersible and the wastewater / biomass mixture is permanently moved together with the carriers.
- the permanent movement and mixing of the wastewater-biomass mixture ensures that the carriers serving as growth bodies and their microorganisms do not attach themselves to defined locations. This ensures an even distribution in the mixture.
- carriers / fillers serving as growth bodies are also arranged outside the submersible in the liquid receiving the submersible.
- Fig. 1 a schematic representation of a diving wheel
- Fig. 2 a view along the line II-II in Fig. 1;
- Fig. ' a perspective view of a first, serving as a growth body carrier on a larger scale
- FIG. 5 a view as in FIG. 1 of a modified carrier
- 6 a view as in FIGS. 5 and 5 from a third carrier
- FIG. 7 a view as in FIG. 1 with essential features of a modified diving wheel
- Fig. 8 a section along the line VIII-VIII in Fig. 7;
- FIGS. 1 and 7 a view as in FIGS. 1 and 7 of a third exemplary embodiment of a diving wheel
- FIG. 10 a view of the submersible wheel according to FIG. 9 in a different position
- FIG. 11 shows a section along the line XI-XI in FIG. 9;
- Fig. 12 a view of a diving wheel similar to the diving wheel shown in Fig. 9 together with Au growth bodies / packing outside the diving wheel and
- FIGS. 1, 7 and 9 a view as in FIGS. 1, 7 and 9 of a fourth embodiment of a submersible.
- a device 1 for biological wastewater treatment comprises a submersible wheel 2 with a driven, supporting shaft 3 and with reaction chambers. in the form of segment chambers.
- the reaction chambers L are located on the circumference of the submersible 2 and have radially outwardly directed air passage openings 6 and radially inwardly directed air passage openings 7.
- the external air passage openings 6, as can be clearly seen in FIG. 3 in connection with FIG. 1, are arranged to lead in the direction of rotation of the submersible 2.
- the segment-shaped reaction chambers 4 are formed with the aid of profiled plates 8 and edge webs 9 which are at a distance from one another and define the distance between the plates 8 and limit their circumference.
- the plates 8 are held with the aid of support rods 10, 11, which in turn are attached at their ends to axially external support plates 12, 13.
- each case plate-shaped closure pieces 14, 15 serving as axial closure walls, to which the support plates 12 and 13 are welded or otherwise fastened.
- the closure pieces 14 and 15 each have at least one, but preferably a plurality of small openings 16.
- Sieves (sieve plates) 17 arranged in these openings 16 allow waste water and biomass to be treated to be exchanged from a space 18 outside the diving wheel and its interior 19 surrounding the shaft 3.
- This interior 19 is an approximately cylindrical or polygonal annular chamber on the outside and is sufficient from the shaft 3 to the radially inner parts of the edge webs 9 of the segment-shaped reaction chambers,.
- the carrier 20 in the interior 19 or the inner chamber of the carrier 2 there are a large number of loose and non-interconnected, freely movable carriers 20 / fillers serving as growth bodies for sessile microorganisms.
- the carrier 20 in the interior 19 of the submersible wheel 2. move continuously from a lower position corresponding to the carrier 20 'to an upper position corresponding to the carrier 20''in FIG. 2 and come into contact with air bubbles which come from the Reaction chambers 4 emerge into its interior 19 during the rotation of the submersible.
- the air passage openings 6 and 7 in the reaction chambers 4 serve to supply the interior of the reaction chambers 4 and the interior 19 of the submersible wheel 2 which is polygon-shaped or approximately cylindrical in cross-section and surrounds the shaft 3.
- the radially outer air passage opening 6 of each reaction chamber 4- is formed by a gap 21 which is located in a part 22 of the edge web 9, which forms the outer periphery 5 of the submersible wheel 2 (FIG. 3).
- the inside air passage opening 7 is also formed by a gap 23 of the edge web 9. This gap 23 is located in a radially inner part 24 of the edge web 9 that extends in the circumferential direction.
- the gap 23 is delimited on the one hand by a free end 24. of the part 24 and of an intermediate piece 25 dividing the reaction chamber centrally in the radial direction from the inside to the outside.
- the edge web 9 and its parts 22, 24 and also the intermediate piece 25 are boundary walls with a very small axial extent, so that the submersible wheel 2 has a large number of reaction chambers 4 in the axial direction.
- a guide body 26 in the form of a guide plate extends from part 24 of the edge web 9 to a second part 27 of the edge Web 9 on the other side of the intermediate piece 25, as shown in Fig. 3.
- the guide body 26 is partially continuous and thus tight and partially it is perforated or sieve-shaped.
- the air passing through the air passage opening 7 into the interior 19 of the submersible wheel 2 also flows through the sieve-shaped part of the guide body 26, the uninterrupted part of the guide body 26 serving to guide the wastewater / biomass mixture and the carrier 20 located therein .
- the wastewater / biomass mixture located in the central interior 19 of the diving wheel 2 moves in the opposite direction of rotation relative to the arrow b.
- the mixture first moves along the guide body 26 and then reaches the sieve-shaped area 28 through which the air bubbles out into the waste water / biomass mixture when the reaction chamber is approximately in the position 4 'in FIG. 1.
- the reaction chambers 4 only take in ambient air when they appear above the liquid level 29 in order to then gradually release them again when they are submerged. If the reaction chambers 4 each fill with air when they emerge, liquid flows through the opening 7 or through the sieve-shaped region 28 of the guide body 26.
- the carriers 20 have a size approximately like a thimble and can be of different sizes or different designs depending on the respective requirements. Three to four different embodiments are shown in perspective in FIGS. 4 to 6, the same reference numbers and additionally a different letter index being provided for basically the same parts.
- the carrier 20a according to FIG. 4 is essentially cylindrical. It consists of rings 31a, 32a and 33a, which are connected to one another via webs 34-a and 35a. The rings 31a, 32a and 33a are arranged in parallel, at a distance from one another and co-axially to one another. In addition, centrally arranged, crossing webs 36a are also provided. Together, the rings and the bars create a large surface on which the sessile microorganisms can settle.
- the diameter of the rings 31a, 32a and 33a is approximately the same size as the axial length of the carrier 20a.
- FIG. 5 is a carrier 20b, which is also cylindrical and has approximately the same diameter and axial length. It essentially consists of a tube piece 37b with outwardly directed, axially parallel ribs 38b and with inwardly directed, intersecting webs 39b.
- the carrier 20c shown in FIG. 6 has an approximately spherical contour 4.0c and consists of rods 4-1 c arranged parallel to one another and at a distance from one another.
- the length of the rods 4.1c is different in order to achieve the spherical contour 4-Oc.
- a tube 42c is provided in the center instead of one or more rods 4-1c.
- FIGS. 7 and 8 relate to a modified device 1d, the same reference numbers for the same parts as in the case of the device 1 and additionally the letter index d being provided here as well.
- the device 1d has on the circumference of the submersible wheel 2d as reaction chambers 4.d and / or chambers serving only as air and liquid transport devices.
- chambers are in each case tubes with intermediate walls for their function as reaction chambers and with openings 6d lying on a common radius and pointing laterally in the circumferential direction. Above and below the liquid level 29d, they first take in ambient air and then release it again. For this purpose, as shown in FIG. 8, several openings 6d are provided in an axially parallel position. When air is released, the tubular chambers 4d each fill with liquid and also release it when they appear above the liquid level 29d.
- Brackets 50d serve for the storage and fastening of the tubes 4d and at the same time support plates 12d and 13d provided as an axial limitation of the submersible wheel 2d.
- the support plates 12d and 13d - like the rest of the support plates 12 and 13 of the device 1 - represent outer parts of sector elements which radially on the inside - in the exemplary embodiments according to FIGS. 1 and 7 - with hexagonal and plate-shaped, serving as closure walls closure pieces 14-d and 15d are connected.
- the closure pieces 14d and 15d are in turn non-rotatably connected to the shaft 3d.
- Screen plates 51d are also fastened to the holding clips 50d with the aid of screws 52d. Relative to the submersible 2d, the screen plates 51d are located radially inside the tubes 4.d. These screen plates 51d are arcuate and together form a ring 53d. The interior 19d of the ring 53d represents a cylindrical chamber 54d through which the shaft 3d extends. The chamber 54d not only serves to hold the wastewater-biomass mixture, but also expediently to hold carriers 20d (FIG. 8) for the sessile microorganisms. The ring 53d formed from sieve plates 51d prevents the carriers 20d from escaping radially outward into the region of the tubular reaction chamber 4d.
- the cylindrical chamber 54-d is delimited by the partially segment-shaped support plates 12d and 13d or by the closure pieces 1d and 15d, the closure pieces 14-d and 15d in turn openings 16d for the waste water-biomass mixture and in the Openings 16d for holding back the supports 20d each have sieve-shaped plates 17d.
- the central inner chamber forming the interior 19 or 19d is at least almost completely closed on both end faces.
- the polygonal / hexagonal and plate-shaped closure pieces 14- and 15 or 14-d and 15d according to the exemplary embodiments serve for this purpose.
- the slots 55 and 55d located between the reaction chambers 4 and 4-d can be closed over their entire length or at least partially. This not only increases the rigidity of the submersible 2, 2d, but also influences the flow conditions inside and outside of the submersible 2, 2d.
- FIGS. 9 to 11 A further exemplary embodiment of a device 1e with a submersible wheel 2e is shown in FIGS. 9 to 11, wherein again in principle identical parts have the same reference numbers and additionally the letter index e.
- the oxygen input of the submersible wheel 2 according to FIG. 1 can be increased further if additional scooping chambers 60e for ambient air are provided on the circumference 5e of the submersible wheel 2e and further measures are arranged such that the scooping chambers 60e above the liquid level 29e recorded ambient air 6le is released as far as possible into the interior 19e of the submersible 2e when diving.
- the scooping chambers 6 ⁇ e are each arranged radially on the outside over the ends 62e of the slots 55e located between adjacent reaction chambers 4e.
- the slots 55e extend from the circumference 5e of the submersible wheel 2e to the interior 19e thereof and are closed on both end faces of the submersible wheel 2e by means of cover strips 63e.
- the contour of the reaction chambers e or the spacer and edge webs 9e used to form them is symmetrically the same on both sides of the slots 55e (FIGS. 1 and 9).
- guide elements 64.e are arranged at a short distance from the outer inlet openings 65e of the slots 55e. According to the exemplary embodiment, these guide elements 64-e are symmetrical and have the shape of angles. With their tip they are directed into the interior of the slots 55e.
- the scooping chambers 6 ⁇ e are arranged, which according to the exemplary embodiment are pipes.
- the tubular scoop chambers 60e are attached to the circumference 5e of the submersible wheel 2e by means of brackets 66e. They have at least one opening 67e for the entry and exit of ambient air. A plurality of openings 67e are expediently provided over the length of the tubular scoop chambers 6 ⁇ e according to FIG. All openings 67e are arranged in a position oblique to the circumference 5e of the submersible 2e and open in the direction of rotation. With respect to a radial plane 68e of the submersible 2e, the openings 67e open into the Scooping chambers 60e at an angle which can be of the order of 30 ° to 60 °. However, it goes without saying that the openings 67e must be adapted to the particular dimensions of a submersible wheel 2e and are therefore not restricted to the values mentioned.
- FIGS. 9 to 11 On a submersible wheel 2e with six reaction chambers 4-e, 6 tubular scooping chambers 6 ⁇ e can be attached, as shown in FIGS. 9 to 11. With each rotation of the submersible 2e, the scooping chambers 60e absorb ambient air analogously to the function according to the exemplary embodiments described first and emit them again in the liquid mixture. The air bubbling out below the liquid level 29e is introduced through the slit-shaped slots 55e into the interior 19e of the submersible wheel 2e which is designed as an inner chamber.
- wastewater and suspended biomass are additionally pumped from the bottom area or space 18e of the container 56e into the submersible wheel 2e and into the counter-rotating roller made of wastewater, biomass and air bubbles and, if appropriate, packing elements 20, in accordance with the principle of the mammoth pump fed.
- the profile strips or guide elements 64.e arranged in the funnel-shaped, outer part of the slots support the trapping and the introduction of the air bubbles, as is also shown by arrows.
- the scooping chambers 60e fill with waste water and suspended biomass from the bottom area of the container 56e.
- the contents of the scooping chambers 60e also flow into the interior 19e of the submersible wheel 2e via the slots 55e. This mixture is detected and mixed in by the circulating or roller-shaped flow located there.
- the angle profiles or guide elements 64.e serving as profile strips have a double function both as guide elements for the ambient air when they pass from the scooping chambers 60e into the interior 19e of the submersible wheel 2e and when liquid is dispensed from the scooping chambers 60e into the interior 19e the diving wheel 2e.
- one of the six slots 55e according to the exemplary embodiment is in a position such that used air can be released into the atmosphere unhindered.
- the process can be automated by constant measurement of the oxygen content in the anoxic zone (room 18e outside the submersible 2e) and regulation of the speed of the submersible 2e.
- FIG. 10 only shows another position of the submersible 2e in the liquid mixture containing biomass and can be seen from arrows, in which way ambient air bubbles out of the scooping chambers 6 ⁇ e into the interior 19e of the submersible 2e and at least the mixture absorbed by the scooping chambers 6 ⁇ e when it emerges to a considerable extent through the slots 55e into the interior 19e of the submersible 2e
- FIG. 11 shows the submersible 2e with carriers 20e or fillers 20e for sessile microorganisms arranged in its interior 19e.
- these carriers 20e not only have to be arranged in the interior 19e of the submersible 2e, but they can also be arranged according to the
- the embodiment shown in FIG. 12 is also located in the liquid mixture 70f surrounding the submersible 2f.
- the device 1f shown in FIG. 12 with the diving wheel 2f largely corresponds to the device 1e with the diving wheel 2e according to FIGS. 9 to 11. Identically identical parts therefore have the same reference numbers and additionally the distinctive letter index f.
- the submersible 2f has at least one paddle 71f on its circumference.
- This paddle 71f can be an angle iron which is attached to the circumference 5f of the submersible wheel 2f by means of brackets 72f.
- the paddle (s) 71f are used for additional mixing of the liquid mixture 70f located in the container 56f accommodating the submersible wheel 2f, in which, according to the exemplary embodiment, the carriers or fillers 20f for sessile microorganisms are additionally located.
- the mass located at the bottom of the container 56f is therefore whirled up and reaches the interior 19f of the submersible wheel 2 through the scooping chambers 60f, which serve not only to absorb ambient air, but also to absorb liquid ensures that the carrier or filler 20f located outside the submersible 2 are not accommodated and remain in the space 18f outside the submersible 2f.
- at least one brushing device 7-f is attached to the circumference by means of 3 brackets 75f catch 5f of the submersible 2f attached.
- the brush device 74-f is designed in such a way that, with each revolution, it brushes free of any curved sieve plates 76f arranged at an outlet 77f of the container 56f or prevents the sieve from being loaded.
- the space 18f between the end faces of the submersible wheel 2f and the container walls is expediently only designed to be large enough to ensure that the body 20f is transported in this space 18f.
- the paddle 71f and the brushing device 7.f are designed such that between the paddle or brushing device on the one hand and the outer diameter of the submersible wheel 2f on the other hand, and between the paddle 71f or brushing device 74f on the one hand and the bottom 78f of the container 56f on the other defined distance exists.
- the high oxygen input capacity of the device 1f according to FIG. 12 ensures that both the fillers 20f inside the submersible wheel 2f and outside of the submersible wheel 2f are adequately supplied with oxygen.
- the drainage of the submersible 2f creates vortices behind the paddle 71f and the brushing device 74-f, which preclude the filling bodies 20f from settling and together with the tubular scooping chambers 6 ⁇ f the transport and the constant mixing of waste water, suspended biomass and the filling bodies Ensure 20f with the fixed biomass.
- FIG. 13 A last exemplary embodiment of a device 1g with a submersible wheel 2g is shown in FIG. 13, wherein basically the same parts there again have the same reference numbers and also the letter index g.
- the submersible wheel 2g is not only equipped with a scooping chamber 60g, but also with two scooping chambers 60g 'and accordingly with two openings 67g.
- the respective one scooping chamber 60g is in turn in a radial extension of the slots 55g, while the second scooping chamber 60g 'is arranged on the same radius immediately next to the first scooping chamber 6 ⁇ g in the direction of rotation.
- Both scooping chambers 6 ⁇ g and 60g ' are in turn expediently tubular and have a plurality of openings 67g over their length.
- the position of these openings 67g is selected in such a way that the scooping chambers 60g, 60g 'first optimally absorb ambient air after surfacing or during immersion and then, when the ambient air is emitted into the slots 55g, the liquid mixture 70g from the space 18g outside Fill the submersible 2g and then release this liquid mixture again when it emerges through the slots 55g to the inside 19g of the submersible 2g.
- more than two scooping chambers 60g or 60g ' can also be provided per slot 55g and that the size and volume of the scooping chambers and the size and position of the openings 67g can vary according to the dimensions of the submersible wheel 2g and not are limited to the embodiment shown in the figures.
- Air bubbles are carried in this flow in such a way that they are transported shortly before reaching the liquid surface from a zone of low pressure against their natural attachment movement back down into a zone of higher pressure. This is associated with a particularly good utilization of oxygen, in particular since the oxygen transfer is also increased by increasing the partial pressure. It is also essential that no additional energy supply is required to form this flow inside the submersible 2.
- the downward flow in the submersible 2 is generated by the built-in baffles / guide bodies, but there is also the fact that the air bubbling out of the reaction chambers located under water into the interior 19 of the submersible also serves as a drive for the cylindrical flow. It creates an upward density flow. Liquid is also pumped through the slots 55e into the interior 19e of the submersible wheel 2e through the additionally provided scooping chambers 60e. Furthermore, liquid flows from the reaction chambers that appear in each case into the interior of the immersion wheel, this liquid being tangentially introduced into the roller-shaped flow through the guide plates. is leading. The liquid coming from the slits reinforces the cylindrical flow because of the difference in density, since the liquid contains fewer air bubbles there and therefore sinks downwards. The liquid flowing into the interior of the submersible wheel therefore serves as a drive for the overall rotating flow.
- screens 17 are located in all openings 16 provided in principle, in order to specifically achieve or change or adjust a liquid exchange between the interior 19 of the diving wheel 2 and outside the diving wheel.
- the cover strips 63e (FIG. 9) can also be adjustable.
- the invention is not restricted to the exemplary embodiments shown in the figures. It is crucial that targeted measures ensure that large to medium-sized air bubbles are broken up while bubbling through - also with the help of the carriers 20 / on body parts - so that a particularly large total bubble surface is created. It causes an improved oxygen transfer. Due to the induced, counter-rotating rotation of the liquid with carriers 20 in the interior 19 of the submersible 2, the air bubbles are hindered in their natural upward movement and conveyed downward again. This significantly increases the contact time and the degree of oxygen utilization. The resistance when the moving carriers 20 are bubbled through increases the contact time. The result is particularly good efficiency.
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- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Biological Treatment Of Waste Water (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Medicines Containing Plant Substances (AREA)
- Physical Water Treatments (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59703366T DE59703366D1 (de) | 1996-08-21 | 1997-08-19 | Verfahren und vorrichtung zur biologischen abwasserreinigung |
PL33158497A PL331584A1 (en) | 1996-08-21 | 1997-08-19 | Biological treatment plant and method |
AT97938780T ATE200473T1 (de) | 1996-08-21 | 1997-08-19 | Verfahren und vorrichtung zur biologischen abwasserreinigung |
EP97938780A EP0944554B1 (de) | 1996-08-21 | 1997-08-19 | Verfahren und vorrichtung zur biologischen abwasserreinigung |
HK00101694A HK1026190A1 (en) | 1996-08-21 | 2000-03-20 | Process and device for the biological purification of sewage |
GR20010401025T GR3036176T3 (en) | 1996-08-21 | 2001-07-05 | Process and device for the biological purification of sewage |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19633629A DE19633629A1 (de) | 1996-08-21 | 1996-08-21 | Verfahren und Vorrichtung zur biologischen Abwassserrreinigung |
DE19633629.5 | 1996-08-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1998007663A1 true WO1998007663A1 (de) | 1998-02-26 |
WO1998007663B1 WO1998007663B1 (de) | 1998-04-09 |
Family
ID=7803185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1997/001773 WO1998007663A1 (de) | 1996-08-21 | 1997-08-19 | Verfahren und vorrichtung zur biologischen abwasserreinigung |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0944554B1 (de) |
AT (1) | ATE200473T1 (de) |
CZ (1) | CZ290218B6 (de) |
DE (2) | DE19633629A1 (de) |
ES (1) | ES2157594T3 (de) |
GR (1) | GR3036176T3 (de) |
HK (1) | HK1026190A1 (de) |
HU (1) | HUP0000640A3 (de) |
PL (1) | PL331584A1 (de) |
PT (1) | PT944554E (de) |
WO (1) | WO1998007663A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1711440A1 (de) | 2004-01-06 | 2006-10-18 | Hans Bioshaft Limited | Anlage und verfahren zur abwasserbehandlung |
GB0622134D0 (en) * | 2006-11-07 | 2006-12-20 | Warden Plastics Ltd | Filter elements for biological filtration arrangements |
EP2113489A1 (de) * | 2008-04-28 | 2009-11-04 | Dytras, S.A. | Rotatorische Belüftungsvorrichtung und Biofilmträger für Abwasseraufbereitung |
ITMI20131257A1 (it) * | 2013-07-26 | 2015-01-27 | Eco Sistemi S R L | Apparato per la depurazione di acque impure, in particolare di acque reflue e/o inquinate |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5684691A (en) * | 1979-12-08 | 1981-07-10 | Nishihara Environ Sanit Res Corp | Rotary contact device |
JPS5932995A (ja) * | 1982-08-19 | 1984-02-22 | Inax Corp | 汚水処理装置 |
JPS5932994A (ja) * | 1982-08-19 | 1984-02-22 | Inax Corp | 空気混和用中空回転体 |
JPS5987095A (ja) * | 1982-11-09 | 1984-05-19 | Inax Corp | 汚水処理装置 |
DE3905753A1 (de) * | 1989-02-24 | 1990-08-30 | Orenstein & Koppel Ag | Verfahren und einrichtung zur denitrifikation von wasser |
WO1993022244A1 (en) * | 1992-04-29 | 1993-11-11 | Aquatech Ltd. | Cage-like biological contact cleaner device for waste water treatment |
DE19603690A1 (de) * | 1996-02-02 | 1997-08-07 | Staehler Gmbh | Verfahren zur aeroben, weitergehenden biologischen Reinigung von Abwässern |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29506841U1 (de) * | 1995-04-22 | 1995-07-20 | Damann Franz Josef | Bio-Reaktor |
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1996
- 1996-08-21 DE DE19633629A patent/DE19633629A1/de not_active Ceased
-
1997
- 1997-08-19 WO PCT/DE1997/001773 patent/WO1998007663A1/de active IP Right Grant
- 1997-08-19 HU HU0000640A patent/HUP0000640A3/hu unknown
- 1997-08-19 CZ CZ1999533A patent/CZ290218B6/cs not_active IP Right Cessation
- 1997-08-19 ES ES97938780T patent/ES2157594T3/es not_active Expired - Lifetime
- 1997-08-19 PL PL33158497A patent/PL331584A1/xx unknown
- 1997-08-19 EP EP97938780A patent/EP0944554B1/de not_active Expired - Lifetime
- 1997-08-19 DE DE59703366T patent/DE59703366D1/de not_active Expired - Fee Related
- 1997-08-19 AT AT97938780T patent/ATE200473T1/de not_active IP Right Cessation
- 1997-08-19 PT PT97938780T patent/PT944554E/pt unknown
-
2000
- 2000-03-20 HK HK00101694A patent/HK1026190A1/xx not_active IP Right Cessation
-
2001
- 2001-07-05 GR GR20010401025T patent/GR3036176T3/el not_active IP Right Cessation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5684691A (en) * | 1979-12-08 | 1981-07-10 | Nishihara Environ Sanit Res Corp | Rotary contact device |
JPS5932995A (ja) * | 1982-08-19 | 1984-02-22 | Inax Corp | 汚水処理装置 |
JPS5932994A (ja) * | 1982-08-19 | 1984-02-22 | Inax Corp | 空気混和用中空回転体 |
JPS5987095A (ja) * | 1982-11-09 | 1984-05-19 | Inax Corp | 汚水処理装置 |
DE3905753A1 (de) * | 1989-02-24 | 1990-08-30 | Orenstein & Koppel Ag | Verfahren und einrichtung zur denitrifikation von wasser |
WO1993022244A1 (en) * | 1992-04-29 | 1993-11-11 | Aquatech Ltd. | Cage-like biological contact cleaner device for waste water treatment |
DE19603690A1 (de) * | 1996-02-02 | 1997-08-07 | Staehler Gmbh | Verfahren zur aeroben, weitergehenden biologischen Reinigung von Abwässern |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 5, no. 152 (C - 73)<824> 25 September 1981 (1981-09-25) * |
PATENT ABSTRACTS OF JAPAN vol. 8, no. 118 (C - 226)<1555> 31 May 1984 (1984-05-31) * |
PATENT ABSTRACTS OF JAPAN vol. 8, no. 193 (C - 241)<1630> 5 September 1984 (1984-09-05) * |
Also Published As
Publication number | Publication date |
---|---|
HUP0000640A2 (en) | 2000-07-28 |
HUP0000640A3 (en) | 2001-02-28 |
GR3036176T3 (en) | 2001-10-31 |
CZ290218B6 (cs) | 2002-06-12 |
EP0944554A1 (de) | 1999-09-29 |
DE59703366D1 (de) | 2001-05-17 |
ATE200473T1 (de) | 2001-04-15 |
DE19633629A1 (de) | 1998-02-26 |
EP0944554B1 (de) | 2001-04-11 |
PL331584A1 (en) | 1999-07-19 |
ES2157594T3 (es) | 2001-08-16 |
CZ53399A3 (cs) | 1999-07-14 |
PT944554E (pt) | 2001-09-28 |
HK1026190A1 (en) | 2000-12-08 |
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