WO2012049909A1 - Equipement de traitement des eaux usées - Google Patents

Equipement de traitement des eaux usées Download PDF

Info

Publication number
WO2012049909A1
WO2012049909A1 PCT/JP2011/068944 JP2011068944W WO2012049909A1 WO 2012049909 A1 WO2012049909 A1 WO 2012049909A1 JP 2011068944 W JP2011068944 W JP 2011068944W WO 2012049909 A1 WO2012049909 A1 WO 2012049909A1
Authority
WO
WIPO (PCT)
Prior art keywords
bubble
reaction tank
bubbles
screen
microbial mass
Prior art date
Application number
PCT/JP2011/068944
Other languages
English (en)
Japanese (ja)
Inventor
康博 福崎
安宏 中村
祐貴 川久保
Original Assignee
株式会社明電舎
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社明電舎 filed Critical 株式会社明電舎
Priority to SG2013024641A priority Critical patent/SG189238A1/en
Publication of WO2012049909A1 publication Critical patent/WO2012049909A1/fr

Links

Images

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
    • C02F3/28—Anaerobic digestion processes
    • C02F3/2846—Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors

Definitions

  • the present invention is a waste water treatment technique mainly using a fluid anaerobic biofilm, particularly a microbial mass (self-granulating sludge composed of microorganisms) from a reaction tank based on the UASB method (upflow anaerobic sludge blanket method).
  • the present invention relates to a wastewater treatment technology for suppressing the outflow of a certain granule or a microbial membrane containing a core substance.
  • the UASB method has the greatest feature that it can process a very high load by using a microbial mass aggregated at a high density without requiring a filler as a microbial carrier.
  • the microbial mass corresponds to a microbial membrane containing a substance called a granule or a nucleus that is self-granulated.
  • methane gas obtained in the process of contained equipment wastewater can be used for steam recovery by boilers and power recovery by gas power generation.
  • it is applied to wastewater treatment equipment for facilities that discharge high-concentration industrial wastewater such as food processing factories, beer factories, alcohol distillation factories, and pulp and paper factories.
  • ammonia-containing wastewater there are a nitrification treatment in which ammonia is oxidized to nitric acid by an aerobic bacterium in the previous stage, and a denitrification treatment in which the nitric acid is reduced to nitrogen gas by using an organic substance by anaerobic heterotrophic bacteria.
  • anaerobic ammonia oxidizing (commonly known as anammox) bacteria that can be denitrified from ammonia and nitrous acid have attracted attention, and the UASB method is also applied in this method.
  • nitrification of ammonia to about half amount of nitrous acid in the former stage enables denitrification treatment by the latter stage anammox, and the aeration power required for the aerobic treatment is greatly reduced.
  • the latter stage of anammox reaction is based on autotrophic bacteria, which eliminates the need for organic matter required for denitrification by heterotrophic bacteria, so it is extremely excellent in that it does not require the supply of organic matter required for wastewater with a low C / N ratio. Nitrogen treatment method.
  • the reaction vessel described in Patent Document 1 separates bubbles from the microbial mass by causing the microbial mass to which bubbles generated in a bed staying in the vicinity of the bottom adhere to collide with the sludge collision part during the ascent. While the microbial mass from which the bubbles are separated settles under its own weight, the bubbles are released into the atmosphere via a gas collecting part disposed at the upper part of the reaction tank.
  • the treatment apparatus described in Patent Document 2 includes a Jinkasa-shaped gas-liquid separation member in a treatment tank that retains the bed near the bottom, and causes a microbial mass to which bubbles generated in the bed adhere to collide with the gas-liquid separation member. In this way, bubbles are separated from the microbial mass. The separated bubbles are discharged into the atmosphere through a gas conduit connected to the top of the gas-liquid separation member.
  • a sludge separation chamber is formed in the processing tank by disposing a different-diameter cylindrical body whose upper end opening is larger in diameter than the lower end opening coaxially with the gas-liquid separation member. A liquid phase containing a microbial mass is introduced into the sludge separation chamber. The microbial mass separated solid-liquid in the sludge separation chamber descends outside the cylindrical body arranged coaxially between the different diameter cylindrical body and the gas-liquid separating member, and settles on the bed.
  • the treatment apparatus described in Patent Document 3 arranges a gable roof-like gas-liquid separation member in the middle layer portion and the high layer portion in the tank in which the microbial mass is retained, thereby forming beds having different microbial mass concentrations in the tank. Yes. And the bubble is isolate
  • the microbial mass concentration decreases as it rises from the lower part to the higher part in the tank, so that the outflow of the microbial mass can be reduced compared to the treatment apparatuses of Patent Documents 1 and 2.
  • the microbial mass to which bubbles that did not collide with the gas-liquid separation member in the upper layer react with the short circuit flow. It may reach the liquid level in the tank and flow out of the system together with the treated water.
  • the present invention separates the bubbles from the microbial mass floating by the bubbles of methane gas or nitrogen gas generated as a result of the microbial reaction in the layer near the bottom of the UASB type reaction tank, and separates the microbial mass into the layer. Let me stop. On the other hand, the separated bubbles are collected by a bubble collecting member, guided to the vicinity of the liquid level of the reaction vessel, and released into the gas phase. In addition, the liquid phase containing the microbial mass in the upper layer of the reaction tank is solid-liquid separated into the microbial mass and treated water by a solid-liquid separation member.
  • An aspect of the wastewater treatment apparatus of the present invention is a wastewater treatment apparatus that decomposes organic matter and nitrogen compounds in the treated water by bringing the treated water into contact with the microbial mass under an ascending water flow,
  • the reaction vessel is introduced from the bottom and brought into contact with the microbial mass contained in the layer near the bottom and then discharged from the top as treated water, and the microbial mass to which the gas bubbles generated from the layer are attached is contacted.
  • a liquid phase containing a bubble separation member for separating bubbles from a microbial mass, a bubble collection member for collecting the gas bubbles or the bubbles separated by the bubble separation member, and a microbial mass in the upper layer of the reaction tank And a solid-liquid separation member for separating the microbial mass into treated water.
  • the schematic block diagram which showed the wastewater treatment apparatus which concerns on Embodiment 1 of invention Sectional drawing explaining the operation example of the wastewater treatment apparatus which concerns on Embodiment 1.
  • FIG. The schematic block diagram which showed the waste water treatment apparatus which concerns on Embodiment 2 of invention.
  • the schematic block diagram which showed the aspect of the supply path of the to-be-processed water which concerns on Embodiment 5 of invention. Explanatory drawing explaining the effect
  • the schematic block diagram which showed the waste water treatment apparatus which concerns on Embodiment 6 of invention.
  • Embodiment 1 The wastewater treatment apparatus 1 of Embodiment 1 shown in FIG. 1 is a UASB-type wastewater treatment apparatus that decomposes organic matter and nitrogen compounds in the water to be treated by bringing the water to be treated into contact with a microbial mass under an ascending water flow. Therefore, the UASB treatment is stabilized by suppressing the outflow of the microbial mass.
  • the wastewater treatment apparatus 1 includes a reaction tank 10, a bubble separation screen 11, a bubble collection tube 12, a side screen 13, and a central screen 14.
  • the reaction tank 10 water to be treated is introduced from the bottom 100, brought into contact with a microbial mass contained in a bed staying near the bottom 100, and then discharged from the top as treated water.
  • the water to be treated is supplied by the pump P ⁇ b> 1 through the supply pipe 101 connected to the lower end of the reaction tank 10.
  • the reaction vessel 10 is formed in a cylindrical shape. Further, the inner peripheral surface of the reaction tank 10 near the bottom 100 is easy to accumulate microbial masses at the bottom, and is formed in a tapered shape so as to improve the contact efficiency with the water to be treated.
  • the bubble separation screen 11 comes into contact with the microbial mass to which gas bubbles generated as a result of the microbial reaction are attached from the bed staying near the bottom 100 of the reaction tank 10 to separate the bubbles from the microbial mass.
  • the bubble separation screen 11 is formed of a slit-like or lattice-like screen such as a wedge wire screen formed in a Jinkasa shape, and an opening 111 is formed at the top thereof.
  • the bubble separation screen 11 is arranged coaxially with the tank near the bottom of the reaction tank 10.
  • the screen width of the bubble separation screen 11 is set to be smaller than or equal to the average particle diameter of the microbial mass, for example, 0.5 to 0.8 mm.
  • the bubble collecting tube 12 collects gas bubbles generated from the bed or bubbles separated by the bubble separation screen 11 and guides them to the vicinity of the liquid level of the reaction vessel 10.
  • the gas released from the liquid surface is discharged into the atmosphere through an exhaust pipe 103 connected to the ceiling 102 of the reaction tank 10, or used as an energy gas if the generated gas contains methane gas. Is done.
  • the bubble collection tube 12 is configured by a collection cone 121 formed in a Jinkasa shape and a cylindrical portion 122 vertically connected to the upper end opening of the collection cone 121. It is arranged coaxially with the tank.
  • the side screen 13 separates the liquid phase containing the microbial mass in the upper layer of the reaction tank 10 into the microbial mass and treated water.
  • the side screen 13 is formed of a slit-like or lattice-like screen such as a wedge wire screen formed in a cylindrical shape.
  • the mesh width of the screen is set to be smaller than the average particle diameter of the microbial mass so as to be suitable for solid-liquid separation of the microbial mass and treated water.
  • the side screen 13 is formed in a cylindrical shape having the same diameter as the reaction vessel 10 and is installed on the peripheral side surface near the upper end of the reaction vessel 10.
  • a treated water separation chamber 17 for introducing treated water via a side screen 13 is provided on the outer periphery near the upper end.
  • the central screen 14 separates the bubbles by contact with the microbial mass to which the bubbles rising inside the bubble collecting tube 12 are attached.
  • the central screen 14 is a slit such as a wedge wire screen formed in a cylindrical shape having a diameter larger than the diameter of the cylindrical portion 122 of the bubble collecting tube 12 and smaller than the diameter of the side screen 13 and further longer than the side screen 13. It consists of a screen in the form of a grid or a grid.
  • the central screen 14 has an upper end in the reaction tank 10 that is higher than the upper ends of the bubble collecting tube 12 and the side screen 13 and higher than the liquid level in the reaction tank 10. Is installed coaxially with the tank.
  • the central screen 14 is mainly intended to immediately separate the bubbles from the microbial mass to which bubbles are attached, and is not intended to completely prevent the microbial mass from flowing out.
  • the size may be wider than the width. For example, it is set to 0.7 to 1.0 mm.
  • a guide portion 15 is provided on the inner peripheral surface of the reaction tank 10 so that the gas bubbles generated from the bed and the bubbles separated by the bubble separation screen 11 can be guided to the lower end opening of the bubble collecting tube 12. Yes.
  • the guide portion 15 is composed of a protrusion having an upper tapered surface 151 and a lower tapered surface 152. As shown in FIG. 2, the tapered surface 151 can guide the air bubbles riding on the upward flow to the lower end of the air bubble collecting tube 12. On the other hand, the tapered surface 152 can guide the microbial mass that has settled as shown in FIG. 2 toward the bottom 100 of the reaction vessel 10.
  • a detour member 16 is disposed at the center of the guide portion 15 to detour the flow of the bubbles flowing out from the opening at the top of the bubble separation screen 11 and the flow of the microbial mass to which the bubbles are attached in the radial direction of the reaction tank 10. Yes.
  • the detour member 16 is formed of a slit-like or lattice-like screen such as a wedge wire screen in a circular plate having a diameter larger than that of the opening and smaller than the inner diameter of the guide 15, and is installed horizontally in the reaction vessel 10. Yes. What is necessary is just to set the screen width
  • the water to be treated is introduced into the reaction tank 10 from the bottom 100 through the supply pipe 101 by the pump P1.
  • organic substances and nitrogen compounds in the water to be treated are decomposed by the microbial mass constituting the bed 19.
  • methane gas is generated in the process of decomposition of organic matter.
  • the ammonia component contained in the water to be treated is converted into nitrogen gas by a denitrification reaction by anaerobic ammonia-oxidizing bacteria that are one of the bacteria constituting the microbial mass. Bubbles such as methane gas and nitrogen gas generated from the microbial mass rise toward the liquid level in the reaction tank 10 by the upward water flow.
  • the microbial mass near the bottom 100 where the treatment activity is the highest has a large amount of gas generation and may lose its sedimentation property due to the adhesion of bubbles of the gas, and rises in the upward water flow.
  • the bubbles are detached from the microbial mass.
  • the microbial mass from which the bubbles are detached settles by its own weight and stays near the bottom 100.
  • the treated water treated by the bed 19 is solid-liquid separated by the bubble separation screen 11, then rides on the upward flow, passes between the guide portion 15 and the detour member 16, and moves toward the upper layer of the reaction tank 10. .
  • the microbial mass to which the detached bubbles and the bubbles that did not contact the bubble separation screen 11 are attached is discharged from the opening 111 of the bubble separation screen 11.
  • the bubbles discharged from the opening 111 and the microbial mass to which the bubbles are attached are guided by the bypass member 16 and the tapered surface 151 of the guide portion 15 and introduced into the bubble collecting tube 12.
  • the bubbles collected by the collecting cone 121 and the microbial mass to which the bubbles are attached are guided to the vicinity of the liquid level by riding up the treated water and rising in the cylindrical portion 122. .
  • the air bubbles that have overflowed from the cylindrical portion 122 reach the liquid level, they are released as gas into the gas phase in the reaction vessel 10 and discharged from the exhaust pipe 103 to the outside of the system.
  • the air bubbles are separated from the microbe mass and only the air bubbles are introduced into the cylindrical portion 122. The The separated microbial mass descends by its own weight and settles toward the bed 19.
  • the microbial mass to which bubbles are attached is brought into contact with the central screen 14 on the flow of treated water that flows out of the system through the side screen 13, the bubbles are detached from some of the microbial masses and the gas is removed. Released into the phase, the microbial mass settles in the space between the central screen 14 and the bubble collection tube 12. In addition, the microbial mass accumulated in the liquid phase in the central screen 14 continues to collide with the bubbles rising from the lower bubble collecting tube 12, thereby having the effect of separating the bubbles from the microbial mass. The settling of the mass is promoted. As described above, the microbial mass from which the bubbles are detached is settled by its own weight. This sedimenting microbial mass also settles toward the bed 19.
  • the treated water that has risen to the upper layer in the vicinity of the liquid level in the reaction tank 10 is separated into solid and liquid by the side screen 13 and then discharged out of the system from the outflow pipe 171 of the treated water separation chamber 17.
  • the microbial mass accumulated in the liquid phase between the side screen 13 and the central screen 14 may stay on the inner surface of the reaction tank 10 above the screens 13 and 14 due to the flow of the treated water. Drawing is necessary.
  • the inner surface portion of the reaction tank 10 above the side screen 13 immersed in the liquid phase is made into a slit-like or lattice-like screen such as a wedge wire, the floating microbial mass is pushed out to the outflow side by the flow of treated water, and the side screen. 13 and the screen are easily blocked.
  • the inner surface portion of the reaction vessel 10 above the side screen 13 does not have water permeability.
  • a part of the treated water is supplied through a circulation pipe 172 to a pH adjusting system (pH adjusting tank 18 equipped with a pH adjusting liquid not shown and its charging / stirring mixing means). Is supplied to the supply pipe 101 through the return pipe 181.
  • the bubbles can be immediately separated from the microbial mass to which the bubbles staying outside the bubble collecting member 12 are adhered.
  • the gas bubbles generated from the bed 19 and the flow of bubbles separated by the bubble separation screen 11 are guided to the lower end opening of the bubble collecting member 12. I can. Thereby, bubbles can be efficiently guided to the bubble collecting member 12 without generating a short circuit flow.
  • bypass member 16 is arranged at the center of the guide portion 15, the flow of the bubbles flowing out from the opening 111 at the top of the bubble separation screen 11 and the flow of the microbial mass to which the bubbles are attached is bypassed in the radial direction and opened. Separation of bubbles from the microbial mass floating and flowing out from the portion 11 can be promoted.
  • a high concentration substrate that inhibits the biological activity of the microbial mass is set to a concentration level that does not inhibit the activity of the microbial mass.
  • the anaerobic biological activity of the bed 19 can be maintained.
  • the reaction tank 20 is formed in a substantially rectangular parallelepiped shape.
  • bubble separation screens 21 and 26 a bubble collecting member 22, a side screen 23, a central screen 24, a guide unit 25, and a treated water separation chamber 27 are provided in the tank.
  • the wastewater treatment apparatus 2A has the same configuration as the wastewater treatment apparatus 1 except for the configuration of the reaction tank 20.
  • water to be treated is introduced from the bottom part 200, brought into contact with the microbial mass, and then discharged from the top as treated water.
  • To-be-processed water is supplied with the pump P1 through the supply pipe
  • FIG. The side surface in the vicinity of the bottom 200 of the reaction tank 20 is formed in a tapered shape so as to easily collect microbial masses in the bottom 200 as in the reaction tank 10 and to increase the contact efficiency with the water to be treated.
  • the bubble separation screen 21 comes into contact with the microbial mass to which gas bubbles generated from the bed staying at the bottom 200 of the reaction tank 20 are attached, and separates the bubbles from the microbial mass.
  • the bubble separation screen 21 is composed of a wedge wire screen formed in a plate shape extending in the longitudinal direction of the reaction vessel 20. Note that the screen width of the bubble separation screen 21 is set to be smaller than or equal to the average particle diameter of the microbial mass, for example, 0.5 to 0.8 mm, like the bubble separation screen 11 according to the first embodiment.
  • the bubble separation screen 21 is arranged non-perpendicular to the liquid level near the bottom 200 of the reaction vessel 20.
  • the two bubble separation screens 21 are arranged so that the longitudinal section in the width direction of the reaction tank 20 has a substantially square shape.
  • the two bubble separation screens 21 are symmetrically inclined so that the distance between the opposing surfaces becomes smaller upward.
  • the bubble collecting member 22 collects gas bubbles generated from the bed or bubbles separated by the bubble separation screen 21 and guides them to the vicinity of the liquid level of the reaction tank 20.
  • the gas released from the liquid surface is discharged into the atmosphere through the exhaust pipe 103 connected to the ceiling 202 of the reaction tank 20 or is used as energy gas.
  • the air bubble collecting member 22 has a pair of plate-like collecting members 221 that are symmetrically arranged so that the distance between the opposing surfaces becomes smaller upward, and an upper end of the collecting member 221. It consists of a pair of plate-shaped guide members 222 connected perpendicularly to the liquid surface.
  • plate-like rectifying members 223a, 223b, and 223c that meander the upward flow of the fluid may be provided on either of the opposing surfaces of the guide member 222.
  • the rectifying members 223a to 223c are arranged to be inclined at a predetermined angle with respect to the vertical direction so that the upward flow can meander.
  • the side screen 23 separates the liquid phase containing the microbial mass in the upper layer of the reaction tank 20 into the microbial mass and treated water.
  • the side screen 23 is composed of a slit-like or lattice-like screen such as a wedge wire screen formed in a plate shape.
  • the screen width of the screen is set to be smaller than the average particle diameter of the microbial mass so as to be suitable for solid-liquid separation of the microbial mass and treated water, as in the first embodiment.
  • the central screen 24 is installed on both side surfaces near the upper end of the reaction tank 20 facing the guide member 222 of the bubble collecting member 22.
  • a treated water separation chamber 27 for introducing treated water via a side screen 23 is provided outside the both side surfaces.
  • One treated water separation chamber 27 is connected to an outflow pipe 171 through which treated water flows out of the system.
  • the other treated water separation chamber 27 is connected to a return pipe 181 for supplying part of the treated water to the pH adjusting tank 18 (the pH adjusting liquid and its charging / stirring mixing means are not shown).
  • the central screen 24 separates the bubbles by contact with the microbial mass to which the bubbles rising outside the bubble collecting member 22 are attached.
  • the microbial mass to which the bubbles that have floated upward from between the gas guide members 12 are continuously impacted by the intense gas flow from below, The adhering gas is separated. The separated gas is released from the liquid surface to the atmosphere.
  • the microbial mass from which the bubbles are detached descends outside the gas guide member 12 by its own weight and settles down to the bed staying near the bottom 200 of the reaction tank 20.
  • a collection C of microbial masses that have not settled and accumulated near the liquid surface near the central screen 24 is periodically removed from the sludge extraction tube 28 by a valve operation.
  • the sludge extraction tube 28 is connected to the side surface of the reaction tank 20 that does not face the central screen 24. What is necessary is just to set the installation height of the sludge extraction pipe
  • the sludge extraction tube 28 may be connected to both side surfaces of the reaction tank 20 as illustrated in FIG.
  • a scraper may be provided in place of the sludge extraction tube 28. As the scraper, a well-known scraper employed in a water treatment facility may be applied.
  • the central screen 24 is formed of a slit-like or lattice-like screen such as a plate-like wedge wire screen formed to be approximately the same size as the side screen 23. As shown in FIG. 3, the upper end of the central screen 24 is higher than the upper ends of the bubble collecting member 22 and the side screen 23, higher than the liquid level in the reaction tank 20, and these members 22. , 23 are connected to the inner surface of the reaction tank 20 so as to be arranged substantially in parallel with each other.
  • the central screen 24 is mainly intended to immediately separate the bubbles from the microbial mass to which bubbles are attached, and is not intended to completely prevent the microbial mass from flowing out.
  • the size is set to be, for example, 0.7 to 1.0 mm wider than the width of the side screen 23. In addition, what is necessary is just to stop the microorganisms mass which passed between the mesh widths of the center screen 24 with the side screen 23 with a narrower mesh width.
  • the inner surface of the reaction vessel 20 is provided with a guide portion 25 for guiding the gas bubbles generated from the bed and the bubbles separated by the bubble separation screen 21 to the lower end of the bubble collecting member 22.
  • the guide portion 25 is formed of a protrusion having a triangular cross section in the width direction of the reaction tank 20.
  • the lower surface 251 of the protrusions guides the bubbles on the upward flow to the lower end of the bubble collecting member 22, and the upper surface 252 can guide the settled microorganism mass to the bottom of the reaction tank 20.
  • a bubble as a bypass member that bypasses the flow of the microbial mass to which the bubbles and the bubbles that have flowed out from between the bubble separation screens 21 are attached in the width direction of the reaction tank 20.
  • a separation screen 26 is arranged.
  • the bubble separation screen 26 is composed of a slit-like or lattice-like screen such as a plate-shaped wedge wire screen whose overall length is substantially the same as the bubble separation screen 21 but whose width is secured larger than the minimum distance between the screens 21. It is installed horizontally with respect to the surface. What is necessary is just to set the screen width
  • reaction tank 20 may include bubble separation screens 21 a and 21 b instead of the bubble separation screen 26.
  • the bubble separation screens 21a and 21b are formed of a slit-like or lattice-like screen such as a wedge wire screen formed in substantially the same shape and size as the bubble separation screen 21.
  • the bubble separation screen 21a is disposed at a predetermined angle with respect to the horizontal direction at a predetermined distance from the bottom portion 200 of the reaction tank 20.
  • the bubble separation screen 21b is disposed between the bubble separation screen 21 and the bubble separation screen 21a so as to be inclined at a predetermined angle in a direction opposite to the inclination of the bubble separation screen 21a.
  • the microbial mass to which the bubbles are attached easily separates the bubbles due to contact with the screens 21 a, 21 b, and 21, and the bottom portion 200. It is possible to limit the flow of the microbial mass having increased activity in the vicinity.
  • the detachment of bubbles from the floating microorganism mass is promoted by the extension of the path of the upward flow of the fluid between the guide members 222.
  • the residence time of the microbial mass having increased activity in the vicinity of the bottom 200 of the reaction tank 20 can be extended. Thereby, the highly active microbial mass can be maintained at a high concentration in the vicinity of the bottom 200.
  • the wastewater treatment apparatus 3 of this embodiment illustrated in FIG. 5 includes a solid-liquid separation screen 31 instead of the side screen 23 and the center screen 24 of Embodiment 2, thereby forming a treated water separation chamber 32 in the reaction tank 20. Except for this, it has the same configuration as the wastewater treatment apparatus 2B.
  • a bubble separation screen 21c is added near the bottom 200 of the reaction tank 20.
  • the treated water separation chamber 32 is formed by being partitioned by a solid-liquid separation screen 31 in the vicinity of the upper end in the reaction tank 20.
  • the solid-liquid separation screen 31 includes a central screen portion 311 and a side screen portion 312.
  • the central screen portion 311 is formed of a slit-like or lattice-like screen such as a plate-like wedge wire screen, and is arranged in parallel with the guide member 222 of the bubble collecting member 22.
  • the side screen portion 312 is formed of a slit-like or lattice-like screen such as a plate-shaped wedge wire screen, and extends from the inner surface of the reaction tank 20 facing the guide member 222 of the bubble collecting member 22 to the lower end portion of the central screen portion 311.
  • the mesh width of the solid-liquid separation screen 31 is set to be smaller than the average particle diameter of the microbial mass so as to be suitable for the solid-liquid separation of the microbial mass and the treated water, like the side screen 13 according to the first embodiment.
  • a drainage trough 33 as shown in FIG. 11 may be provided outside the treated water separation chamber 32 for discharging treated water out of the system, instead of the outflow pipe 171.
  • the drainage trough 33 receives the treated water that has overflowed from the upper end edge 201 of the reaction tank 20 and transfers it to a facility outside the system or downstream by natural flow. Adoption of the drain trough 33 can prevent the outflow piping system from being blocked.
  • the bubble separation screens 21a to 21c are inclined so that the angles thereof are different from each other in order from the bottom 200 of the reaction tank 20 so that the upward flow of the introduced water to be treated meanders.
  • the apparatus configuration becomes compact in addition to the effects of the waste water treatment apparatuses 2A and 2B. Further, the residence time of the activated microbial mass due to the addition of the bubble separation screen near the bottom 200 in the reaction tank 20 can be further extended as compared with the wastewater treatment apparatuses 2A and 2B of the second embodiment. In the vicinity of the bottom 200, a highly active microbial mass can be maintained at a higher concentration.
  • the width diameter of the reaction tank 40 lower than the lower end part of the bubble collecting member 22 is smaller than the width diameter of the reaction tank 40 higher than the lower end part.
  • Is set to A boundary side surface 403 between the upper side surface 401 and the lower side surface 402 of the reaction tank 40 is an inclined surface.
  • the guide unit 25 according to the third embodiment is omitted in the reaction vessel 40.
  • the waste water treatment apparatus 4 has the same configuration as the waste water treatment apparatus 3 of Embodiment 3 except for the configuration of the reaction tank 40.
  • the width diameters of the bubble separation screens 21, 21a to 21c are set according to the shape of the reaction tank 40.
  • the bubble separation screen 21 is disposed between opposing boundary side surfaces 403.
  • the bubble separation screens 21a to 21c are disposed between the opposed lower side surfaces 402.
  • the apparatus configuration can be further simplified than the wastewater treatment apparatus 3 of the third embodiment.
  • the width diameter of the reaction tank 40 lower than the lower end part of the bubble collecting member 22 was set smaller than the width diameter of the reaction tank 40 higher than the lower end part.
  • the air bubbles riding on the upward flow from the bottom 400 can be directly guided to the lower end of the collecting member 221 of the bubble collecting member 22.
  • the settled microbial mass can be lowered along the boundary side surface 403 and guided to the bed 19 staying near the bottom 400.
  • a unit configuration including the bubble separation screens 21, 21 a to 21 c, the bubble collection member 22, and the solid-liquid separation screen 31 is provided. This may be detachably provided in the reaction tank 40.
  • the unit 41 includes a support frame 42, a support fixing portion 43, and a lifting tool 44.
  • the support frame 42 is a pair of frame members that hold the bubble separation screens 21, 21 a to 21 c, the bubble collection member 22, and the solid-liquid separation screen 31.
  • the support fixing portion 43 is a pair of fixing members that hold the support frame 42 and are detachably fixed to the upper edge portion of the reaction tank 40.
  • the lifting tool 44 is a pair of lifting members for lifting the support fixing portion 43.
  • the unit 41 is detachably attached to the reaction tank 40, it can be taken out from above the reaction tank 40 by hanging the chain hook of the lifting device on the hanger 44 during maintenance. This facilitates the maintenance of the bubble separation screens 21, 21a to 21c, the bubble collection member 22, and the solid-liquid separation screen 31.
  • a plurality of supply pipes branched from the supply pipe 101 of the water to be treated correspond to the arrangement state of the bubble separation screens in the reaction tanks 10, 20, and 40 according to the first to fourth embodiments. As shown, the tanks 10, 20, 40 are connected to the side surfaces.
  • the supply pipes 101 a to 101 c are branched from the supply pipe 101.
  • the supply pipe 101a is connected to the bottoms of the reaction vessels 10, 20, and 40.
  • the supply pipe 101b is connected so that water to be treated can be supplied to a space between the lowest bubble separation screen 21a and the upper bubble separation screen 21b in the reaction tank 10, 20, 40.
  • the supply pipe 101c is connected so that the water to be treated can be supplied to the space between the bubble separation screen 21b and the bubble separation screen 21c above it.
  • a fluid flow along the bubble separation screens 21a to 21c can be formed in the vicinity of the bottoms of the reaction tanks 10, 20, and 40.
  • the microbial mass to which gas bubbles generated from the microbial mass are attached rises in the vertical direction and comes into contact with the bubble separation screens 21a to 21c, so that the bubbles can be separated from the microbial mass.
  • the wastewater treatment apparatus 7 of this embodiment illustrated in FIG. 13 maintains the solid-liquid separation function of the side screen 23 by constantly supplying the gas collected by the bubble collecting member 72 to the side screen 23 of the reaction tank 70. .
  • the reaction tank 70 is formed in a different-diameter rectangular parallelepiped shape.
  • water to be treated is introduced from the bottom 700 and brought into contact with the microbial mass, and then discharged from the top as treated water.
  • To-be-processed water is supplied with the pump P1 through the supply pipe
  • FIG. 1 A diagrammatic configuration
  • the long side surface in the vicinity of the bottom 700 of the reaction tank 70 is easy to accumulate the microbial mass on the bottom as in the reaction tank 10 of the first embodiment, and has a tapered shape so that the water to be treated and the microbial mass can be efficiently contacted. Is formed. Further, the width of the lower half of the reaction tank 70 in which the bed 19 is retained is set smaller than the width of the upper half of the tank 70.
  • the inner surface of the boundary side surface portion 703 between the upper side surface portion 701 and the lower side surface portion 702 of one long side surface of the reaction tank 70 is an inclined surface. By adopting this inclined surface, the sedimented microorganism mass can be efficiently accumulated in the bed 19.
  • the bubble separation screens 21a to 21e, the guide member 71, the bubble collecting member 72, and the guide member 73 are provided in the tank so as to correspond to the shape of the reaction tank 70.
  • the bubble separation screens 21a to 21e are inclined so that the angles are different from each other in order from the bottom 700 of the reaction tank 70 so that the upward flow of the water to be treated introduced into the reaction tank 70 meanders in the same manner as in the third to fifth embodiments.
  • the bubble separation screens 21a to 21c are arranged in the lower half of the reaction vessel 70 so that the inclination angles are different from each other as shown in the figure.
  • the bubble separation screens 21d and 21e are disposed substantially at the same position as the boundary side surface portion 703 of the reaction tank 70 so that the inclination angles are different from each other.
  • the guide member 71 guides the upward flow in the reaction tank 70 to the bubble collecting member 72 disposed above the guide member 71.
  • the guide member 71 is formed in a plate shape, and the upper and lower ends thereof are separated from the inner surface of the reaction tank 70 and the both surfaces of the member are disposed substantially perpendicular to the inner surface of the boundary side surface part 703. It is equipped.
  • the bubble collecting member 72 collects bubbles separated by the bubble separation screens 21a to 21e.
  • the bubble collecting member 72 is made of a plate-like member formed in a cross-sectional shape.
  • the length of the bubble collecting member 72 in the depth direction is set so as to correspond to the width of the side screen 23 as shown in FIG.
  • the lower end portion of the short width plate portion 721 of the bubble collecting member 72 is in close contact with the inner surface of the side surface portion 704 facing the upper side surface portion 701 of the reaction vessel 70 as shown in FIG.
  • the lower surface of the long-width plate portion 722 of the member 72 is disposed substantially parallel to the upper surface of the guide member 71, and the lower end portion is disposed at least lower than the upper end portion of the guide member 71.
  • a square baffle member 74 is formed along the long side of the lower surface on the lower surface near the lower end of the long-width plate portion 722.
  • a gas pipe 75 for supplying a separation gas to the bubbling pipe 76 is connected to the top portion 720 of the bubble collecting member 72.
  • the bubbling tube 76 supplies the separation gas collected in the bubble collecting member 72 to the side screen 23 provided near the upper end of the side surface portion 704 of the reaction tank 70 to thereby diffuse the screen. It is a member.
  • the bubbling tube 76 is installed in a space between the side surface portion 704 lower than the lower end portion of the side surface screen 23 and the bubble collecting member 72.
  • the bubbling tube 76 is disposed horizontally along the lower side of the side screen 23 as shown in FIG.
  • the bubbling tube 76 is formed of a tube body 760 whose both ends are closed, and a plurality of separation gas diffusion holes 761 are formed along the length direction thereof. What is necessary is just to set the angle of the diffuser hole 761 formed in the bubbling pipe 76 so that separation gas can be uniformly supplied from the diffuser hole 761 to the side screen 23 side.
  • the plurality of air diffusion holes 761 are formed at the same position of about 45 degrees obliquely downward on the side screen 23 side of the tube 760.
  • the bubbling tube 76 can uniformly clean the side screen 23 when the full length corresponding to the width of the side screen 23 is applied. Even when a plurality of short tube types are arranged in series as in the embodiment illustrated in FIG. If the height of the bubbling tube 76 can be changed, the height of the liquid level in the bubble collecting member 72 (volume of the gas phase part 80) can be arbitrarily adjusted.
  • a gas supply pipe 77 for supplying gas to the bubble collecting member 72 or the bubbling pipe 76 during maintenance of the side screen 23 is connected to the gas pipe 75 via a valve V6.
  • a pressurized gas is supplied from the gas supply pipe 77 to the member 72 by operating the valve V6, and the liquid level in the member 72 is lowered by the gas pressure to block the substance. Remove.
  • pressurized gas is supplied from the gas supply pipe 77 to the bubbling pipe 76 by the operation of the valve V6, and strong gas cleaning becomes possible. The cleaning effect of the screen is increased.
  • the generated gas from the reaction tank 70 is collected without opening it to the atmosphere, and is compressed into a pressurized tank by a compressor. It is preferable to store and reuse.
  • the guide member 73 includes an inclined plate portion 731 and a vertical plate portion 732.
  • the inclined plate portion 731 is disposed substantially parallel to the upper surface of the long-width plate portion 722 of the bubble collecting member 72.
  • the vertical plate portion 732 is disposed substantially parallel to the surface of the side screen 23.
  • a guide member 705 having a triangular cross section is arranged along the upper side of the side screen 23 on the side surface 704 of the reaction tank 70 above the side screen 23, so that the upward flow between the side screen 23 and the vertical plate portion 732 is achieved. Can be guided in the direction of the upper side surface portion 701.
  • a return groove 79 for retaining the microbial mass overflowed from the upper side surface portion 701 is attached.
  • a pump P3 for returning the retained microbial mass to the reaction tank 70 is provided in the return groove 79.
  • a return pipe 173 is connected to the pump P3.
  • the return pipe 173 is connected so that it can be supplied to the space between the bubble separation screen 21 a and the upper bubble separation screen 21 b in the reaction vessel 70.
  • the microbial mass that has overflowed from the upper side surface portion 701 can be returned to the reaction tank 70, and a fluid flow can be formed along the bubble separation screen 21b. Or it has the effect of suppressing the blockage of the screen.
  • the return pipe 173 is provided with a valve V4 for adjusting the return amount.
  • valve V4 need not be provided.
  • a pulling tube 174 for pulling out sludge from the vicinity of the upper portion of the bed 19 is connected to the reaction tank 70.
  • the drawing tube 174 is provided with a valve V5 for adjusting the amount of sludge drawn.
  • supply pipes 101a to 101c of water to be treated are connected in the same manner as the waste water treatment apparatus 5.
  • the supply pipes 101, 101b, and 101c are each provided with valves V1 to V3 for adjusting the supply amount of the water to be treated.
  • the valves V1 to V3 do not need to be provided.
  • the water to be treated is introduced into the reaction tank 70 from the bottom 700 through the supply pipe 101 by the pump P1.
  • organic matter and nitrogen compounds in the water to be treated are decomposed by the microbial mass constituting the bed 19.
  • methane gas is generated in the process of decomposition of organic matter.
  • the ammonia component contained in the water to be treated is converted into nitrogen gas by a denitrification reaction by anaerobic ammonia-oxidizing bacteria that are one of the bacteria constituting the microbial mass. Bubbles such as methane gas and nitrogen gas generated from the microbial mass rise toward the liquid level in the reaction tank 70 by the upward water flow.
  • the microbial mass near the bottom 700 where the treatment activity is the highest has a large amount of gas generation and may lose its sedimentation property due to adhesion of bubbles of the gas, and rises in the upward water flow.
  • the bubbles are detached from the microbial mass.
  • the microbial mass from which the bubbles are detached settles by its own weight and stays near the bottom 700.
  • the treated water treated by the bed 19 is solid-liquid separated by the bubble separation screens 21a to 21e, and then takes an upward flow, is guided by the guide member 71, and moves toward the bubble collecting member 72.
  • the microbial mass to which the detached bubbles and the bubbles that did not come into contact with the bubble separation screens 21a to 21e are also attached to the upward flow, guided by the guide member 71, and moved toward the bubble collecting member 72.
  • the collected bubbles are separated into the gas phase part 80.
  • a part of the gas in the gas phase part 80 is supplied to the gas pipe 75.
  • the microbial mass to which the treated water and a part of the bubbles riding on the flow bypass the bypass plate portion 722 of the bubble collecting member 72 and is guided by the inclined plate portion 731 of the guide member 73 to be side screen. It moves toward 23.
  • the baffle member 74 when a part of the microbial mass to which bubbles are attached comes into contact with the baffle member 74, the bubbles are separated from the microbial mass and only the bubbles are introduced into the gas phase part 80 in the bubble collecting member 72.
  • the microbial mass from which the bubbles have been separated descends along the guide member 71 by its own weight, and is further guided by the inner surface of the boundary side surface portion 703 and settles toward the bed 19.
  • the microbial mass to which bubbles are attached is guided by the guide member 73 and rides on the flow of the treated water flowing out of the system and comes into contact with the side screen 23, the bubbles are detached from a part of the microbial mass and the gas component is It is released into the gas phase above the reaction vessel 70.
  • the microbial mass from which the bubbles are detached rises by riding on the gas flow provided from the bubbling tube 76.
  • the microbial mass and a part of the treated water that have risen near the liquid level in the reaction tank 70 are guided to the space between the guide member 73 and the upper side surface 701 by the guide member 705, and eventually settle due to their own weight.
  • the microbial mass overflowed from the upper side surface portion 701 is accumulated in the return groove 79.
  • the accumulated microbial mass is periodically returned to the reaction tank 70 via the return pipe 173 by the pump P3.
  • the treated water that has risen to the upper layer in the vicinity of the liquid level in the reaction tank 70 is solid-liquid separated by the side screen 23 and then discharged out of the system from the outflow pipe 171 of the treated water separation chamber 27. Since bubbles are supplied from the bubbling tube 76 on the surface of the side screen 23 and are constantly washed, the solid-liquid separation function of the screen 23 is maintained. In addition, since the bubbles provided from the bubbling tube 76 continue to collide with the microbial mass remaining in the vicinity of the side screen 23, the effect of separating the bubbles from the microbial mass is also promoted. A part of the treated water is supplied to the supply pipe 101 after being supplied to a pH adjustment system pH adjustment system (a pH adjustment tank (not shown) and a charging / stirring mixing means) via a circulation pipe 172. Circulated.
  • a pH adjustment system pH adjustment system a pH adjustment tank (not shown) and a charging / stirring mixing means
  • the guide member 71 for guiding the upward flow in the reaction tank 70 to the bubble collecting member 72 is provided, the gas phase portion 80 can be efficiently formed in the bubble collecting member 72.
  • the guide member 73 that guides the upward flow in the reaction tank 70 to the side screen 23 is provided, the solid-liquid separation and the solid-liquid separation can be performed efficiently on the screen 23, so Can be shortened.
  • the baffle member 74 is formed on the lower surface of the bubble collecting member 72 near the lower end of the long plate portion 722, the flow of the microbial mass near the lower end collides with the baffle member 74 and gas is separated from the microbial mass. Efficiency is improved.
  • the bubbling tube 76 is disposed substantially parallel to the lower side below the lower side of the side screen 23, the side screen 23 can be uniformly cleaned.
  • the guide member 705 is disposed on the upper portion of the side screen 23, the microbial mass and a part of the treated water that have risen near the liquid surface of the reaction tank 70 are placed in the space between the guide member 73 and the upper side surface 701. Thus, efficient accumulation of microbial masses in the bed 19 can be performed.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

L'invention concerne un équipement de traitement des eaux usées (1) comprenant : un réservoir de réaction (10) dans lequel l'eau à traiter est introduite par le fond (100) et mise en contact avec des agrégats microbiens contenus dans une couche à proximité du fond (100) et est ensuite refoulée par le sommet sous forme d'eau traitée ; une grille de séparation de bulles de gaz (11) qui entre en contact avec les agrégats microbiens avec des bulles de gaz attachées produits par ladite couche et sépare lesdites bulles de gaz ; un tube de collecte de bulles de gaz (12) qui recueille et guide les bulles de gaz ou les bulles de gaz séparées par la grille de séparation de bulles de gaz (11) jusqu'à la proximité de la surface du liquide dans le réservoir de réaction (10) ; et une grille de surface latérale (13) qui sépare la phase liquide au sommet du réservoir de réaction (10) qui contient les agrégats microbiens en agrégats microbiens et eau traitée. Le réservoir de réaction (10) peut être doté d'une grille centrale (14) qui entre en contact avec les agrégats microbiens qui restent à l'extérieur du tube de collecte de bulles de gaz (12) et sépare les bulles de gaz desdits agrégats microbiens. De l'eau traitée avec un pH ajusté dans un réservoir d'ajustement (18) peut être fournie au réservoir de réaction (10).
PCT/JP2011/068944 2010-10-15 2011-08-23 Equipement de traitement des eaux usées WO2012049909A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SG2013024641A SG189238A1 (en) 2010-10-15 2011-08-23 Waste water treatment equipment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-232489 2010-10-15
JP2010232489A JP5636862B2 (ja) 2010-10-15 2010-10-15 廃水処理装置

Publications (1)

Publication Number Publication Date
WO2012049909A1 true WO2012049909A1 (fr) 2012-04-19

Family

ID=45938144

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/068944 WO2012049909A1 (fr) 2010-10-15 2011-08-23 Equipement de traitement des eaux usées

Country Status (3)

Country Link
JP (1) JP5636862B2 (fr)
SG (1) SG189238A1 (fr)
WO (1) WO2012049909A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106045030A (zh) * 2016-07-10 2016-10-26 北京工业大学 A2/o‑uasb连续流城市生活污水深度脱氮除磷的装置与方法
CN116589074A (zh) * 2023-06-06 2023-08-15 上海大学 弱旋流气泡分离器及微纳米气泡强化有机污染废水处理系统与方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6369204B2 (ja) * 2014-08-04 2018-08-08 株式会社Ihi 嫌気性処理装置
CN108779009A (zh) * 2016-01-06 2018-11-09 维利亚水务解决方案及技术支持公司 用于厌氧生物反应器中的气体分离器的原位清洁的方法与装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1094794A (ja) * 1996-09-20 1998-04-14 Kurita Water Ind Ltd 有機性排水の嫌気性処理装置
JPH10165980A (ja) * 1996-12-05 1998-06-23 Kurita Water Ind Ltd 有機性排水の嫌気性処理装置
JPH1157769A (ja) * 1997-08-27 1999-03-02 Kurita Water Ind Ltd 有機性排水の嫌気性処理装置
JP2001047085A (ja) * 1999-08-16 2001-02-20 Toshiba Corp 嫌気性廃水処理装置
JP2002239589A (ja) * 2001-02-16 2002-08-27 Mitsubishi Kakoki Kaisha Ltd 上向流嫌気性処理装置
JP2002263683A (ja) * 2001-03-13 2002-09-17 Mitsubishi Kakoki Kaisha Ltd 上向流嫌気性処理装置
JP2003190986A (ja) * 2001-12-26 2003-07-08 Ebara Corp 嫌気性処理方法及び装置
JP2003320390A (ja) * 2001-06-29 2003-11-11 Asahi Beer Eng:Kk 廃水処理装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1094794A (ja) * 1996-09-20 1998-04-14 Kurita Water Ind Ltd 有機性排水の嫌気性処理装置
JPH10165980A (ja) * 1996-12-05 1998-06-23 Kurita Water Ind Ltd 有機性排水の嫌気性処理装置
JPH1157769A (ja) * 1997-08-27 1999-03-02 Kurita Water Ind Ltd 有機性排水の嫌気性処理装置
JP2001047085A (ja) * 1999-08-16 2001-02-20 Toshiba Corp 嫌気性廃水処理装置
JP2002239589A (ja) * 2001-02-16 2002-08-27 Mitsubishi Kakoki Kaisha Ltd 上向流嫌気性処理装置
JP2002263683A (ja) * 2001-03-13 2002-09-17 Mitsubishi Kakoki Kaisha Ltd 上向流嫌気性処理装置
JP2003320390A (ja) * 2001-06-29 2003-11-11 Asahi Beer Eng:Kk 廃水処理装置
JP2003190986A (ja) * 2001-12-26 2003-07-08 Ebara Corp 嫌気性処理方法及び装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106045030A (zh) * 2016-07-10 2016-10-26 北京工业大学 A2/o‑uasb连续流城市生活污水深度脱氮除磷的装置与方法
CN116589074A (zh) * 2023-06-06 2023-08-15 上海大学 弱旋流气泡分离器及微纳米气泡强化有机污染废水处理系统与方法
CN116589074B (zh) * 2023-06-06 2024-02-27 上海大学 弱旋流气泡分离器及微纳米气泡强化有机污染废水处理系统与方法

Also Published As

Publication number Publication date
JP5636862B2 (ja) 2014-12-10
JP2012086109A (ja) 2012-05-10
SG189238A1 (en) 2013-06-28

Similar Documents

Publication Publication Date Title
JP5665307B2 (ja) 有機性排水処理装置および有機性排水処理方法
RU2377191C2 (ru) Реактор и способ анаэробной очистки сточных вод
JP5813377B2 (ja) 排水処理装置
JP2009039709A (ja) 油脂含有排水の処理装置および処理方法
JP5366402B2 (ja) 水の処理方法
JP5636862B2 (ja) 廃水処理装置
JP4528828B2 (ja) 流体流動による水処理工程及び装置
JP2008012466A (ja) 水処理装置
EP2222608B1 (fr) Améliorations apportées au traitement de l'eau
KR100992827B1 (ko) 막분리를 이용한 폐수처리 시스템
JP2006289153A (ja) 汚水浄化方法及び装置
WO2010101152A1 (fr) Dispositif pour le traitement par boues activées du type à séparation sur membranes et procédé correspondant
CN112093972A (zh) 一种生物法工业废水处理系统及方法
JP2012166142A (ja) 膜分離活性汚泥システム及び膜分離活性汚泥方法
KR101204395B1 (ko) 하.폐수의 처리장치
CN205575883U (zh) 一种生活污水处理装置
JP5448285B2 (ja) 膜分離活性汚泥処理方法
JP5825807B2 (ja) 廃水処理装置及び廃水処理方法
CN207061970U (zh) 一种紧凑型高效组合填料装置
CN217677181U (zh) 污水处理装置
CN215756921U (zh) 气升环流反应装置
CN219860845U (zh) 一种a2o-mbr一体化低浓有机废水处理系统
JP2010172843A (ja) 水処理装置及び水処理方法
JP2003033795A (ja) 生物脱窒装置及び生物脱窒方法
CN210163289U (zh) 一种废水处理系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11832350

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11832350

Country of ref document: EP

Kind code of ref document: A1