• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an anaerobic wastewater treatment tower (21), comprising a sludge reactor (22) with a waste water inlet zone (23), an active zone (24), a first series (25) of three-phase separation means for separating sludge, gas and water, comprising at least one layer of adjacent gas outlet valves (26) connected to a gas collector tank (27) positioned above the reactor (22) and a clean water discharge outlet (31), the gas outlet valves (26) fins with a hood are for improving the separation of gas, sludge and water.
    公开号:BE1027000A9
    申请号:E20195052
    申请日:2019-01-30
    公开日:2020-09-18
    发明作者:
    申请人:Waterleau Group Nv；
    IPC主号:
    专利说明:

    Description
    The invention relates to anaerobic wastewater treatment and in particular to the up-flow anaerobic sludge bed reactor (known as UASB) with (1) a new type of 'three phase' separator and (2) a new type of 'waste water' distribution 'system, together resulting in a high-load anaerobic tower reactor (HATR). Background of the Invention Industries producing contaminated wastewater need to (pre) purify their wastewater before it can be discharged into surface water. A widely used wastewater treatment technology is the compact anaerobic sludge bed upflow reactor (UASB). In such systems, wastewater is introduced into the bottom of the reactor, where it is mixed with a grain sludge bed consisting of a consortium of microorganisms, each grain being composed in several layers, consisting of a consortium of, among other things, different types. microorganisms, archaea and bacteria, are held in suspension by a combination of the updraft and ascending biogas and the settling effect of gravity.
    In addition to water (liquid phase) and sludge (solid phase), biogas (gas phase) is therefore also present.
    Biogas is produced by the bacteria of the anaerobic granular sludge through anaerobic conversion of the dissolved organic substances in the waste water.
    Where most of the granular sludge must remain in the reactor (xxxxx), the biogas is separated and the effluent (water) discharged.
    The purified water flows to the top of the reactor, where it exits the reactor as purified effluent.
    The separated biogas leaves the system via gas hoods or a gas tank at the top of the reactor, after which it can be further used as an energy source.
    Figures 1a and Ib show two schematic side views of the same anaerobic reactor 1 from different sides.
    The bottom 2 of the tower 1 is arranged with an inclined panel 3 so that the granular sludge can slide to the edge of the panel.
    The sewage inlet pipes are located at the bottom of the panel to ensure that the upward flow remixes the settled sludge.
    However, this is moderately efficient because some of the settled sludge tends to remain on the slant, as a result of which the amount of sludge in the active mixing zone is reduced.
    The large sloping panels 3 at the bottom also limit the volume of the active volume 4 in which sludge is mixed with water, as a result of which the efficiency of the system is limited. In order to separate the gas from the mixture of water and sludge, several layers of three-phase separators 5 are placed on top of each other, at two different heights of the anaerobic reactor tower, a first series of three-phase separators about 2/3 of the way up. height and a second series close to the top, the space between the three-phase separator series is called a post-purification zone 7. In addition, it is also possible for a tower to have only one unit of three-phase separators or three units of three-phase separators.
    The three-phase separators are designed as inverted gutters with vertical side walls and are placed close together with a gap between them to allow the upward flow of water and gas. The gas bubbles, which have an upward movement, are enclosed under the gas caps and guided horizontally to the central extraction channel 6. The gas bubbles also transport sludge and their movement partly guarantees the mixing of the sludge. The gas hoods of the three-phase separators have the function of separating the sludge from the gas bubbles before they are extracted, the separated sludge can then flow back to the bottom of the active zone by gravity. A problem with such so-called "three phase" separators is that an efficient collection of the gas requires at least three or four layers of gas hoods on both levels, occupying a non-negligible height of the tower, and consequently the active volume is reduced at the expense of where the sludge can be mixed with waste water and, as a result, decreases the overall efficiency of the system.
    The height of such three-phase separators therefore leads to a large unused volume, which is therefore not used efficiently to break down pollutants. The only way to increase the efficiency of these types of systems is to increase the size and surface of the tower.
    The object of the invention is to increase the efficiency of the UASB tower, while reducing its surface area and optimizing its height.
    Solution of the Invention The invention relates to an anaerobic wastewater treatment tower, comprising a sludge reactor having, seen from the bottom: - an inlet zone for wastewater,
    - an active zone, - a first series of three-phase separating means for separating sludge, gas and waste water, comprising at least one layer of adjacent gas outlet hoods connected to a gas collector tank, placed above the reactor, and - an outlet for purified effluent water, characterized in that the gas outlet hoods consist of fins with a gas hood end, to improve the separation of sludge, gas and water. The active zone is the volume in which the polluted waste water is mixed with the active sludge, which converts the dissolved organic pollutants into (bio) gas. Louvres with a gas outlet hood refer to predominantly parallel fins, defining channels that are tilted from a vertical orientation, the top portion of each vane being bent to form a gas outlet hood, which covers the channels, but not. closes. Each lamella plate with a curved top or gas outlet hood forms a gas outlet. The lamella principle is known for promoting solids settling in water purification techniques. Combining the sedimentation fin principle with the gas exhaust hood concept allows a synergistic effect on the separation by: - reducing the upward path of gas, as the gas exhaust hood overlaps the adjacent fin, thus trapping gas over the entire surface of the layer is guaranteed; this results in - optimizing the collection of gas through one layer of gas outlet hoods, while - increasing the settling capacity of the three-phase separator due to the larger contact area provided by the fins, thus ensuring a better sludge retention time, while - allowing to reduce the number of layers of gas exhaust hoods required for optimal efficiency compared to known systems, as a result of which the volume of the array of three phase separators is reduced, and - more active volume is available to convert pollutants and / or - reducing the total volume of the system and / or the surface. This a priori simple design with gas outlet hood results in a drastic increase in the efficiency of the wastewater treatment tower.
    In an advantageous manner of implementation, each gas outlet hood connected to the gas collector tank is provided with means for maintaining a gas buffer in each gas outlet hood. Maintaining a layer of gas under the hood at all times provides better solid / sludge separation.
    The sludge reactor of the anaerobic wastewater treatment tower according to the invention may further comprise, in addition to the first series of three-phase separation means: - a post-purification zone, and - a second series of three-phase separation means, comprising at least one layer of gas outlet caps connected at one end are connected to a gas collector tank positioned above the reactor.
    In addition, the efficiency of the anaerobic wastewater treatment tower is also improved with the application of a special arrangement of the inlet zone of the wastewater supply system.
    Instead of placing a large sloping panel on the bottom where the water is admitted, the bottom of the sludge blanket reactor is accordion-shaped i.e. arranged with folds forming alternating valleys and peaks, sewage inlets extending above and along the descend.
    Because of this arrangement, the sludge can settle on several smaller slopes.
    The waste water inlets can recirculate the settled sludge more efficiently due to the reduced distance between settled sludge and a waste water inlet, as a result of which sludge (re) circulation is guaranteed in the active zone.
    The total upward flow is also more homogeneous, which leads to an optimized mixing of sludge and waste water in the active zone.
    In combination with the unique fins with a gas outlet hood, the overall efficiency of the anaerobic wastewater treatment tower is even increased.
    However, this would not be the case with standard three-phase separators, as they would not be efficient enough to handle the higher gas production resulting from the higher recirculation, and thus the activity of the activated sludge.
    In such a case, more layers of standard three-phase separators would be required, resulting in a higher tower and / or a smaller active zone.
    This would be counterproductive.
    The invention will be better understood from the following description of various examples, with reference to the accompanying drawing, in which: Figures 1a and Ib are two schematic side views of the same tower 1 from different sides; Figure 2 is a schematic lateral view of a waste water purification tower according to the invention; Figure 3 is a perspective cross-sectional view of the first series of three-phase separation means of the tower of Figure 2; Figure 4 is a perspective cross-sectional view of the connecting means between the gas outlet hoods and the gas collector tank according to the invention; Figure 5 is a perspective view of a preferred configuration of the bottom of a reactor according to the invention; Figure 6 illustrates a particular embodiment of the internal recirculation according to the invention, and Figure 7 is a perspective view of another configuration of the bottom of a reactor 40 according to the invention.
    Referring to Figure 2, a highly loadable anaerobic wastewater treatment tower 21 comprises a sludge blanket reactor 22, wherein from bottom to top in the following sequence, a wastewater inlet zone 23, a most active zone 24 comprising sludge 39, a first series of three-phase separation means 25, here comprising two layers of adjacent parallel gas outlet hoods 26, which are connected to a gas collector tank 27 positioned above the reactor 22 by means of a riser 32, a post-purification zone 28, a second series of three-phase separation means 29 comprising one layer of gas outlet caps 30 connected to the gas collector tank 27 by the riser 32, and a clean water discharge chute 31. A downcomer 33 connects the bottom of the gas collector tank 27 to the active region 24. The bottom 34 of the reactor 22 here has an accordion shape. The inlet zone 23 may comprise any form of waste water inlet distribution known in the art of anaerobic upstream reactors, or specific type of feed loops, as will be described below.
    The gas outlet caps 26 of the first series of three-phase separation means 25 are shown here identically to the gas outlet caps 30 of the second series of separators 29. However, the first series 25 here comprises two layers of gas outlet hoods for only one layer in the second series.
    29. It would also be possible to have more layers.
    The gas outlet hoods 26 and 30 are lamellae with a gas outlet hood. The structure of the first series of separators 25 is described in detail in Figure 3. The tower 21 here is a cylindrical tower. The series of separators is arranged in one part of the cylinder. The gas outlet caps 26 are here arranged in parallel on either side of a central compartment or receptacle 34 that divides the cylinder portion along its diameter. The gas outlet caps are perpendicular to the compartment 34 and are positioned horizontally toward the compartment to facilitate flow of the gas to the central compartment. Each gas outlet cap is a type of elongated inverted trough which is arranged horizontally and one of its ends is connected to the gas collecting tray 34. The gas collector 34 is arranged with a hole 35 in the center of its top surface to connect the downcomer 33 through and another hole 36 also on the top surface thereof to connect the riser 32. Each gas outlet hood 26 consists of an angled panel 37 curved at the top 38 or hooked downward. The panels 37 of adjacent gas outlet hoods 26 are parallel with the top 38 of one panel vertically overlapping the bottom of the adjacent gas outlet hood, if any, forming a hood. Two layers of gas exhaust hoods are shown here with the panels 37 of each layer tilted in opposite directions (the hoods can also be placed with the same orientation). While the reverse directional gas exhaust hoods are preferred for optimum efficiency, this is not an essential feature of the invention.
    40
    The parallel panels 37 have similarities with the well-known lamellae generally used because of their large surface area to promote sedimentation. These panels 37 can therefore perform the same function here, although they may be of smaller size and / or surface than conventional slats. Indeed, the height can be limited in order to reduce the global height of the first series of separators 25. The hooked top 38 that forms a hood to collect biogas, the term fins with an exhaust hood can be used to describe these particular gas exhaust hoods. Now that the various elements of the high-load anaerobic tower have been described, the waste water treatment will be explained on its own.
    The reactor 22 is filled with water at all times. It does not contain oxygen and the treatment is strictly anaerobic. A balance of incoming and outgoing water is guaranteed to avoid overpressure in the reactor.
    The waste water enters the reactor 22 to the bottom 34 thereof with a certain flow, adapted to promote turbulence in the active zone 24 where sludge is present. Sludge refers to particles of microorganisms that are capable of breaking down the soluble organic pollutants of the water in mainly methane and water. Normally, the tower reactor is filled with well-settling, granular, anaerobic sludge from other reactors to shorten the start-up and adjustment phase.
    The decomposition of the dissolved organics generates methane as gas bubbles, which, along with some sludge, move up to the first layer of fins with a gas outlet cap 26 of the first series of separators 25. The gas bubbles move upward between the fins and are trapped under the gas exhaust hoods 38. As the bubbles rise, they may come into contact with the fins 37 which promote separation of the gas bubble and sludge, which remains on the panels 37 and then flow back down into the active zone due to gravity .
    The gas trapped under the gas outlet hoods 38 flows into the gas collector compartment 34, creating a gas lift effect that entrains sludge from below the collection compartment with sufficient flow into the riser 32 to prevent the rise of the mixed liquid (sludge and water) and gas. to the gas collector tank 27, which is provided with a gas outlet, located generally at the top (not shown). The mixed liquid with anaerobic sludge granules that has risen together with the gas is decanted and again, under gravity in the tank 27, circulated through the downcomer 33 into the active zone 24, creating a significant additional mixing effect which is further described below. will be discussed. The second layer of fins with a gas outlet cap (if fitted) allows the residual gas, which has not been extracted from the first layer, to be similarly trapped and the residual sludge further separated and recirculated downwards. Two-layer louvers with an extractor are illustrated here. However, there may be only one layer or a greater number of layers depending on the size and / or design of the tower. It is believed that one layer of fins with a gas exhaust hood according to the invention is about twice as efficient as one layer of the prior art. Accordingly, it is possible to divide the number of layers of gas outlet caps in half and thus increase the volume of the active zone 24 and / or decrease the total volume of the reactor container 22. If the layers of fins with a gas outlet hood are oriented in opposite directions, the gas bubbles are forced into a zigzag path, as a result, the collection of gas under the hoods is maximized. Another advantage of the fins with an extractor hood according to the invention is the avoidance of the upward suction effect present in conventional gas separator hoods. In conventional gas hoods, the area through which water can flow upwards is even limited to the space between the vertical panels of two gas hoods. This causes a great acceleration of the flow in these interstices, resulting in dragging up many solid materials.
    Due to the combined effect of a smaller gas collector area (small cross-sectional area 34), and the structure of the fins with an extractor (which also occupy a limited surface area), a lower flow acceleration is induced which again improves the separation efficiency. The combination of the efficient separation capacity of the fin portion 37 and the smaller cross-sectional area of the hoods 38 results in a lower amount of gas and sludge being transferred to the post-purification zone.
    The turbulence in the post-treatment zone is much lower than in the active zone, due to the fact that less gas is generated because: - a small amount of sludge can pass through the first series of separators 25, - most of the pollutants are already in the active zone degraded, resulting in - a lower biogas production, as a result of which the upward flow is limited.
    The liquid flow in the post-purge zone is also lower as some of the liquid circulates through the riser and down-pipe, as a result, that flow in the post-purge zone is avoided.
    As a result, a lower amount of biogas and sludge reaches the second set of separators 29.
    The need for three phase separation is thus limited and efficient separation can be achieved by a less amount of lamella layers with a gas outlet cap. Typically, there are fewer layers of gas exhaust hoods in the second series of three-phase separation means than in the first series of three-phase separation means.
    Because the second series 29 of three-phase separation means must handle lower flows and lower particulate matter than the first series 25, the lamellae with a gas outlet cap 30 of the second series 29 may have a different design than the lamellae with a gas exhaust cap 26 of the first series 25. In particular, to ensure that there is no turbulence above the last layer of gas outlet hoods, the top layer of hooded fins is sealed to the side wall of reactor 22, while clean water (virtually no sludge and biogas) reaches outlet 31 with a laminar flow. By sealed, it is meant that the layer of fins with hood is arranged such that no biogas gas can reach the top of the reactor 22 without passing between two fins and under a hood.
    In order to further improve the separation of solid and liquid, the connection between the gas outlet hoods and the gas collection tank 34 may be provided by means for retaining a layer of gas in the gas outlet hood.
    In conventional separators, the end of the gas outlet hood is connected to the gas collecting tank through a simple hole that crosses the vertical portion of the gas collecting tank. This allows all the biogas produced to be extracted through the gas collection tank to the risers. It is well known that maintaining a "buffer" layer of gas under the gas outlet hood allows much better separation of the sludge and water in this zone.
    To this end, with reference to Figure 4, a cover plate 40 may be placed opposite the hole 41, within the gas collection tank 34, to force the gas flow, illustrated by the dashed arrows, to move to the lower part of the cover level before it is ready. is to move back up into the gas collection tank 34.
    In this way, the top layer of gas under the outlet valve 38 cannot be moved to the collection tank 34, as it is retained by the cover plate 40.
    One gas collection tank 34 is usually used for a series of three phase separators. However, depending on the size of the installation, a larger number of gas collection tanks can be used, or a gas collection tank can be split into several compartments. For example, each layer of louvers with a gas outlet hood can be connected to a different compartment. Each tank or compartment can be provided with its own riser. The risers are directly connected to the gas collector tank. In large installations there may be several independent gas collector tanks. The risers are designed in a way to optimize the ratio between biogas and water, as well as the bubble size in the riser (s).
    A riser may have its bottom slightly in the gas collection tank to allow proper flow pattern of water and biogas in the riser.
    The layers of gas exhaust hoods can be made to be modular, i.e. easy to superimpose or remove.
    40
    The series of separating agents according to the invention thus allows a better separation and recirculation of the sludge in the active zone. In order to ensure that the sludge does not settle at the bottom of the reactor, the fins with a gas outlet hood according to the invention are advantageously combined with an accordion-shaped bottom of the reactor.
    Referring to Figure 5, the bottom surface 50 of a sludge reactor 52 is arranged with a harmoniously shaped floor or bottom, that is, with folds forming alternating peaks 54 and troughs 55 and 56. The waste water inlet lines 53 extend horizontally above the valleys 55 and 56 at the bottom of the reactor. The lines 53 here pass through the reactor wall 52 in such a way that a return loop 56 is located outside the reactor 52, as are the gaps of a common wastewater arrival 57 in the various lines 53.
    The wastewater inlet pipes, although described herein to extend along and above the valleys, may be placed in any other suitable pattern, for example in a perpendicular and / or parallel arrangement with respect to the lower peaks 54, they may be above or even embedded within the peaks. If the lines are placed parallel to the valleys, the lines can fully intersect reaction tank 52 and the supply loop is outside the reactor tank.
    If the waste water supply lines are located perpendicular to the valleys and peaks, as described for the reactor 72 illustrated in Figure 7, the supply lines 73 may be located slightly above the valleys 75 and peaks 74.
    Preferably, there is no liquid under the accordion floor (apart from the liquid that can flow in pipelines running under this floor). The section below the bottom can suitably accommodate pipelines, circuits or any other element of interest (eg sludge drains).
    The inlet lines 53 have openings spread along the length of the lines and oriented in different radial directions to create a complete mixing of waste water and sludge.
    When sludge falls or accumulates at the bottom of the reactor 52, it can be resuspended or fluidized due to the flow and turbulence created in this zone by means of the incoming waste water and further enhanced by the downward flow. coming current from the downcomer.
    The orientation of the openings in the water inlet lines 53 is adapted to the particular reactor. For example, openings can be positioned to create a downward flow to re-suspend sludge that accumulates at the bottom of valleys 55 and 56.
    Preferably, openings are positioned on the sides of the pipes to create a generally horizontal flow, which can be directed slightly upward and / or downward to create a swirling movement of water and / or sludge for better mixing and fluidization of the sludge in the above active zone. Such an arrangement of waste water inlet lines is not possible with the conically shaped reactor bottom of the prior art. Figure 5 illustrates a reactor bottom with three tops and four troughs. These numbers can vary depending on the size of the installation. Preferably, the inlet pipes extend more or less the full length of the valleys. The inlet lines can be placed slightly above the level of the tops, or at the same level or slightly lower.
    The valleys are equipped with means to remove settled heavy non-reactive solid materials such as heavy sludge or other inorganic materials. Several extraction / removal points 59 can be located along a valley and connected to sludge outlets 58, they can advantageously be placed within or under the accordion structure. These removals can be manual or automated and can depend on quality measurements made on sludge samples. In order to further optimize mixing in the active zone, the downcomer can be arranged to recirculate water from the gas collector tank with a specific flow orientation. Referring to Figure 6, the downcomer 60 connects the gas collector tank to the active zone 62, where the major anaerobic degradation of pollutants takes place. At its lowest end, the downcomer 60 is divided into two lines 61a and 61b. The lines 61a and 61b can be configured to provide a specific direction to the flow of falling water from the gas collector tank. In particular, a swirling flow can be provided to the water recirculated from the gas collector tank. This flow can be adjusted in conjunction with the flow provided by the inlet lines 63 at the bottom 64 of the reactor to optimize mixing in the active zone 62. The height of the end of downcomers 61a and 61b can also be provided to optimally combine the flows in the active zone 62. This internal recirculation from the gas collector tank is a smart way to remove biogas and improve mixing in the lowest part of the active zone. This means that greater biogas production will mean greater internal flow of water and gas through the risers, resulting in greater flow through the downcomer, also improving mixing and biogas production. Since mixing in the active zone is the most important factor in the efficiency of the anaerobic treatment plant, internal recirculation is a simple and cost effective solution. The gas collector and separation tank is a key element for internal recirculation, where a balance of pressure must be maintained between the incoming gas / water mixture from the riser (s), the outlet 40 of gas, and the recirculation of water through the downcomer. Depending on the size of the highly loaded anaerobic tower reactor, several gas tanks can be installed instead of one, as shown in Figure 2. The gas tank can be placed inside or outside the reactor vessel / tower. The purified effluent is separated via the overflow channels.
    In addition, in order to adjust the incoming streams into the reactor, especially in the active zone, some of the cleaned water may also be recycled, if necessary. Recycling means for the cleaned effluent water can be installed in the reactor or can be arranged externally.
    In general, with a high COD load, the biogas production increases, resulting in an increase in internal recirculation, optimizing the turbulence in the sludge bed, obtaining a slightly diluting effect of the inlet flows and, as a result, an increase in mass transfer capacity. A cylindrical tower is shown. However, it is possible to have other shapes, such as, for example, a square or rectangular reactor. Laboratory research has confirmed that there are two main factors for an optimally functioning reactor: - an efficient mixing of the biological sludge and the wastewater, and - the proper functioning of the three-phase separators, which allows the active biomass inside the anaerobic tower reactor.
    40
    权利要求:
    Claims (10)
    [1]
    Anaerobic wastewater treatment tower (21), comprising a sludge reactor (22) with from bottom to top: - an inlet zone for wastewater (23), - an active zone (24), - a first series (25) of three-phase separators for the separating sludge, gas and water, comprising at least one layer of adjacent gas outlet hoods (26) connected to a gas collector tank (27) positioned above the reactor (22), and - an outlet for purified effluent (31) characterized in that the gas outlet hoods (26) are fins with a gas outlet hood for improving the separation of gas, sludge and water.
    [2]
    A waste water treatment tower according to claim 1, wherein the gas outlet hoods (26) and the gas collector tank (27) are connected by a riser (32), wherein a downcomer (33) is provided for recycling water from the gas collector tank (27) to the active zone (24).
    [3]
    Wastewater treatment tower according to any one of claims 1 and 2, wherein means are provided between each gas outlet hood (26, 30) and the gas collector tank (27) for maintaining a gas buffer in each said gas outlet hood (26).
    [4]
    Wastewater treatment tower according to any one of claims 1 to 3, further comprising, above the first series of three-phase separators: - a post-purification zone (28), - a second series (29) of three-phase separators containing at least one layer of gas outlet caps (30). ) connected at one end to a gas collector tank (27) located above the reactor.
    [5]
    Wastewater treatment tower according to claim 4, wherein there are fewer layers of fins with a gas outlet hood in the second series (29) than in the first series (25) of three-phase separators.
    [6]
    Wastewater treatment tower according to any one of claims 4 and 5, wherein the second series (29) of three-phase separators has a lamella top layer with a gas outlet hood (30) sealed to the side wall of the reactor (22).
    [7]
    Wastewater treatment tower according to any one of claims 1-6, wherein the bottom (34; 50) of the reactor (22; 52) is accordion-shaped.
    [8]
    Wastewater treatment tower according to claim 7, wherein the bottom of the reactor (52) is arranged with folds forming alternating crests (54) and troughs (55, 56) and perforated wastewater distribution means (53) extending above and along the valleys (55, 56) to improve re-suspension of granular sludge.
    [9]
    The wastewater treatment tower of claim 7, wherein the valleys (55, 56) are provided with means for removing settled solid materials from the reactor (52).
    [10]
    The wastewater treatment tower of claim 2, wherein the lower end of the downcomer line (60) is arranged to provide a predetermined direction to the flow of descending water / sludge from the gas collector tank (27) to enhance the resuspension of granular sludge.
    类似技术:
    公开号 | 公开日 | 专利标题
    US8728318B2|2014-05-20|Settling device, purifier comprising a settling device and methods for anaerobic or aerobic purification of waste water
    US4194976A|1980-03-25|Gravitational separator having membrane baffles therein
    CA2793943C|2016-11-22|A separator for separating solids from an influent
    JP5989643B2|2016-09-07|Purification device including solid separation device and waste water purification method
    EP0354744B1|1994-12-28|Clarification apparatus
    US6517714B2|2003-02-11|Treatment of liquids with ballasted flocculation
    US9802140B2|2017-10-31|Remote submerged chain conveyor
    BE1027000A9|2020-09-18|Anaerobic wastewater treatment reactor
    AU2011318244B2|2015-04-02|An effluent treatment unit
    CN102471109B|2015-03-25|Reactor for anaerobically purifying waste water comprising multi-phase separator devices
    EP3689829A1|2020-08-05|Anaerobic waste water purification tower
    WO2020157119A1|2020-08-06|Anaerobic waste water purification tower
    CA3057668A1|2020-04-05|A separator for separating solids from a fluid
    CN2729055Y|2005-09-28|Vertical tilted plate separator
    KR100491353B1|2005-05-24|liquid-solid seperator
    BE1012053A3|2000-04-04|Device for the biological purification of contaminated water
    KR101172198B1|2012-08-07|Inclined plate type settling basin improving efficiency of liquid and solid separation
    同族专利:
    公开号 | 公开日
    BE1027000A1|2020-08-21|
    BE1027000B1|2020-08-24|
    BE1027000B9|2020-09-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4042223A1|1990-12-29|1992-07-02|Pwa Industriepapier Gmbh|REACTOR AND METHOD FOR CONTINUOUS MECHANICAL AND ANAEROBIC BIOLOGICAL CLEANING OF SOLID WASTE WATER|
    DE59609368D1|1996-05-22|2002-07-25|Va Tech Wabag Schweiz Ag Winte|Process and reactor for anaerobic wastewater treatment in a sludge bed|
    PL1888471T3|2005-06-10|2013-04-30|Paques Ip Bv|Anaerobic purification device|
    CN202297249U|2011-10-12|2012-07-04|林长青|Inner-circulated anaerobic fluidize bed reactor|
    CN107986440A|2017-12-04|2018-05-04|魏发宝|The UASB efficient anaerobic tanks of industrial waste water centralized treatment system|
    法律状态:
    2020-10-12| FG| Patent granted|Effective date: 20200824 |
    优先权:
    申请号 | 申请日 | 专利标题
    BE20195052A|BE1027000B9|2019-01-30|2019-01-30|Anaerobic wastewater treatment reactor|BE20195052A| BE1027000B9|2019-01-30|2019-01-30|Anaerobic wastewater treatment reactor|
    PCT/EP2020/052145| WO2020157119A1|2019-01-30|2020-01-29|Anaerobic waste water purification tower|
    CN202080011522.5A| CN113454034A|2019-01-30|2020-01-29|Anaerobic waste water purifying tower|
    [返回顶部]