An MBBR device for sewage treatment and its usage method

Abstract

The present invention discloses an MBBR device for sewage treatment, comprising: a cylindrical structure, a water distribution structure, and an MBBR treatment structure. The cylindrical structure includes an outer cylinder and two inner draft tubes arranged on the inner side of the outer cylinder; a horizontal water inlet pipe is fixedly connected to the side wall of the outer cylinder at the lower sides of the two inner draft tubes. The water inlet end of the water inlet pipe extends to the outside of the outer cylinder. A plurality of water outlets are arranged on the side wall of the water inlet pipe inside the outer cylinder. The area between the water inlet pipe and the inner draft tube forms an anaerobic zone; the MBBR treatment structure includes a plurality of MBBR fillers arranged inside the inner draft tubes, and a stirring unit for preventing the accumulation of the MBBR fillers is arranged on the bottom wall of the outer cylinder. The present invention is compactly combined. Under the action of circulation and aeration, the filled MBBR fillers are in a fluidized state as a whole, and nitrogen and phosphorus removal are efficiently achieved; the first intercepting plate and the second intercepting plate can effectively reduce the loss of the MBBR fillers and the interference with the MBR membrane module.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to an MBBR device for sewage treatment and its use method. Background Art

[0002] The treatment effect of existing biochemical reactors is relatively single. Generally, they are square in structure and lack compactness. For the treatment of wastewater with a relatively large water volume, they have a large floor area and high investment, and the nitrogen and phosphorus removal effect is average.

[0003] Disadvantages and reasons:

[0004] 1. Currently, the requirements for meeting standards are getting higher and higher, and it is necessary to improve the treatment effect of the original equipment, otherwise it cannot meet the market demand;

[0005] 2. The MBBR fillers are involved in problems such as loss and bottom accumulation, and this problem needs to be solved;

[0006] 3. The existing equipment has a large floor area, and sometimes it is inconvenient to place due to site occupation restrictions.

[0007] For this reason, we propose an MBBR device for sewage treatment and its use method to solve the above-mentioned problems. Summary of the Invention

[0008] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the present invention.

[0009] In view of the problems existing in the above-mentioned existing MBBR device for sewage treatment and its use method, the present invention is proposed.

[0010] Therefore, the purpose of the present invention is to provide an MBBR device for sewage treatment and its use method, which are compactly combined. Under the action of circulation and aeration, the MBBR fillers are in a fluidized state throughout, and nitrogen and phosphorus removal can be efficiently achieved.

[0011] To solve the above technical problems, the present invention provides the following technical solution: An MBBR device for sewage treatment, comprising: a cylinder structure, a water distribution structure, and an MBBR treatment structure. The cylinder structure includes an outer cylinder and two inner guide cylinders arranged inside the outer cylinder; a horizontal water inlet pipe is fixedly connected to the side wall of the outer cylinder at the lower sides of the two inner guide cylinders, the water inlet end of the water inlet pipe extends to the outside of the outer cylinder, and a plurality of water outlet ports are arranged on the side wall of the water inlet pipe inside the outer cylinder. The area between the outer cylinder and the inner guide cylinder forms an anaerobic zone; the MBBR treatment structure includes a plurality of MBBR fillers arranged inside the inner guide cylinders, and a stirring unit for preventing the MBBR fillers from accumulating is arranged on the bottom wall of the outer cylinder. A horizontal first intercepting plate is fixedly connected to the inner wall of the inner guide cylinder above the plurality of MBBR fillers. The area of the inner guide cylinder below the first intercepting plate forms an anoxic zone, and a horizontal return pipe is arranged in the anoxic zone. One end of the return pipe is fixedly connected to the inner wall of one of the inner guide cylinders, and the other end of the return pipe extends to the outside of the outer cylinder. A return port is arranged on the side wall of the return pipe inside the inner guide cylinder. An MBR membrane module is arranged inside the inner guide cylinder above the first intercepting plate. The area between the MBR membrane module and the inner guide cylinder forms an aerobic zone, and a horizontal second intercepting plate is fixedly connected to the inner wall of the inner guide cylinder above the MBR membrane module.

[0012] As a preferred solution of the MBBR device for sewage treatment of the present invention, wherein: a sludge discharge pipe communicating inside and outside is fixedly connected to the side wall of the outer cylinder below the water inlet pipe.

[0013] As a preferred solution of the MBBR device for sewage treatment of the present invention, wherein: the stirring unit includes a rectangular housing fixedly connected to the lower end of the outer cylinder. A driving motor is fixedly connected to the center of the lower end of the rectangular housing. The driving shaft of the driving motor extends into the rectangular housing, and vertical rotating shafts are rotatably connected to the inner walls of the rectangular housing on both sides of the driving shaft. The driving shaft is connected to the two rotating shafts through a transmission unit. The other end of the rotating shaft penetrates the bottom wall of the outer cylinder and extends to the inside of the inner guide cylinder, and a plurality of stirring blades are fixedly connected to the outer side wall of the rotating shaft inside the inner guide cylinder.

[0014] As a preferred solution of the MBBR device for sewage treatment of the present invention, wherein: the transmission unit includes a first belt pulley fixedly sleeved on the driving shaft of the driving motor, a second belt pulley corresponding to the first belt pulley is fixedly sleeved on the outer side wall of the rotating shaft, and the first belt pulley is connected to the two second belt pulleys through a belt.

[0015] As a preferred solution of the MBBR device for sewage treatment of the present invention, wherein: the first intercepting plate is used to prevent the MBBR fillers from entering the aerobic zone, and the second intercepting plate is used to prevent the MBR membrane module from moving to its upper side.

[0016] As a preferred embodiment of the MBBR device for sewage treatment according to the present invention, wherein: an aeration pipe is arranged on the inner wall of the inner draft tube on the upper side of the first intercepting plate, and a plurality of aerators are uniformly connected to the upper end of the aeration pipe. Under the action of circulation and aeration, the MBBR packing is in a fluidized state.

[0017] As a preferred embodiment of the MBBR device for sewage treatment according to the present invention, wherein: the using method of the MBBR device for sewage treatment includes the following steps:

[0018] S1. Wastewater uniformly enters the inner draft tube from the bottom through the water inlet pipe, and under the lifting action of a plurality of aerators on the aeration pipe, the water flows upward;

[0019] S2. The sewage sequentially enters the anaerobic zone, the anoxic zone and the aerobic zone. First, multiple MBBR packings are arranged to preliminarily denitrify and dephosphorize the sewage, and the accumulation of the packings is avoided under the combined use of the stirring unit. Subsequently, the water is self-aspirated out through the MBR membrane module, achieving a further effect of denitrification and dephosphorization;

[0020] S3. Regular sludge discharge can be realized through the sludge discharge pipe arranged at the lower part of the outer cylinder.

[0021] Advantages of the present invention: The present invention is compactly combined. Under the action of circulation and aeration, the filled MBBR packing is in a fluidized state throughout, efficiently achieving denitrification and dephosphorization; the first intercepting plate and the second intercepting plate can effectively reduce the loss of the MBBR packing and the interference to the MBR membrane module. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0023] Figure 1 It is a sectional structure schematic diagram of the MBBR device for sewage treatment according to the present invention and its using method;

[0024] Figure 2 It is a top view structure schematic diagram of the MBBR device for sewage treatment according to the present invention and its using method;

[0025] Figure 3 It is a structure schematic diagram of the driving unit of the MBBR device for sewage treatment according to the present invention and its using method. Detailed Embodiments

[0026] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following detailed description of the specific embodiments of the present invention will be provided in conjunction with the accompanying drawings of the specification.

[0027] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0028] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or alternative embodiments that exclude each other with other embodiments.

[0029] Thirdly, the present invention will be described in detail in conjunction with schematic diagrams. When detailing the embodiments of the present invention, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally out of proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0030] Refer to Figures 1-3 , a MBBR device for sewage treatment is provided, including: a cylindrical structure 100, a water distribution structure 200, and a MBBR treatment structure 300. The cylindrical structure 100 includes an outer cylinder 101 and two inner guide cylinders 102 disposed inside the outer cylinder 101.

[0031] Wherein, a horizontal water inlet pipe 201 is fixedly connected to the side wall of the outer cylinder 101 below the two inner guide cylinders 102. The water inlet end of the water inlet pipe 201 extends to the outside of the outer cylinder 101. A plurality of water outlet openings are provided on the side wall of the water inlet pipe 201 inside the outer cylinder 101. The area between the outer cylinder 101 and the inner guide cylinder 102 forms an anaerobic zone. A sludge discharge pipe 202 that is internally and externally connected is fixedly connected to the side wall of the outer cylinder 101 below the water inlet pipe 201. The sludge discharge pipe 202 can perform regular sludge discharge work.

[0032] Among them, the MBBR treatment structure 300 includes a plurality of MBBR fillers 301 disposed inside the inner draft tube 102. A stirring unit for preventing the accumulation of the MBBR fillers 301 is provided on the bottom wall of the outer cylinder 101. The stirring unit includes a rectangular housing 306 fixedly connected to the lower end of the outer cylinder 101. A driving motor 307 is fixedly connected to the center of the lower end of the rectangular housing 306. The driving shaft of the driving motor 307 extends into the rectangular housing 306, and vertical rotating shafts 308 are rotatably connected to the inner walls of the rectangular housing 306 on both sides of the driving shaft. The driving shaft is connected to the two rotating shafts 308 through a transmission unit. Specifically, the transmission unit includes a first belt pulley 310 fixedly sleeved on the outer side of the driving shaft of the driving motor 307. A second belt pulley 311 corresponding to the first belt pulley 310 is fixedly sleeved on the outer side wall of the rotating shaft 308. The first belt pulley 310 is connected to the two second belt pulleys 311 through a belt 312. The synchronous rotation of the two rotating shafts 308 can be achieved through the transmission unit. The other end of the rotating shaft 308 penetrates the bottom wall of the outer cylinder 101 and extends to the inside of the inner draft tube 102. A plurality of stirring blades 309 are fixedly connected to the outer side wall of the rotating shaft 308 inside the inner draft tube 102. The rotation of the plurality of stirring blades can prevent the MBBR fillers from accumulating during use.

[0033] Further, a horizontal first intercepting plate 302 is fixedly connected to the inner wall of the inner draft tube 102 above the plurality of MBBR fillers 301. An anoxic zone is formed in the area of the inner draft tube 102 below the first intercepting plate 302. A horizontal return pipe 303 is provided in the anoxic zone. One end of the return pipe 303 is fixedly connected to the inner wall of one of the inner draft tubes 102, and the other end of the return pipe 303 extends to the outside of the outer cylinder 101. A return port is provided on the side wall of the return pipe 303 inside the inner draft tube 102. An MBR membrane module 304 is provided in the inner draft tube 102 above the first intercepting plate 302. An aerobic zone is formed in the area between the MBR membrane module 304 and the inner draft tube 102. A horizontal second intercepting plate 305 is fixedly connected to the inner wall of the inner draft tube 102 above the MBR membrane module 304. The first intercepting plate 302 is used to prevent the MBBR fillers 301 from entering the aerobic zone, and the second intercepting plate 305 is used to prevent the MBR membrane module 304 from moving to its upper side. More specifically, an aeration pipe 313 is provided on the inner wall of the inner draft tube 102 above the first intercepting plate 302. A plurality of aerators 314 are uniformly connected to the upper end of the aeration pipe 313. Under the action of circulation and aeration, the MBBR fillers 301 are in a fluidized state.

[0034] The usage method of the MBBR device for sewage treatment includes the following steps:

[0035] S1. Wastewater enters the inner draft tube 102 from the bottom through the water distribution pipe 201 evenly. Relying on the lifting action of the plurality of aerators 314 on the aeration pipe 313, the water flow moves upward.

[0036] S2. The sewage enters the anaerobic zone, anoxic zone and aerobic zone in sequence. First, multiple MBBR fillers 301 are set to preliminarily remove nitrogen and phosphorus from the sewage, and the accumulation of the fillers is avoided by the combined use of the stirring unit. Subsequently, the treated water is self-aspirated by the MBR membrane module 304, achieving the effect of further removing nitrogen and phosphorus.

[0037] S3. Regular sludge discharge can be realized through the sludge discharge pipe 202 arranged at the lower part of the outer cylinder 101.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An MBBR device for sewage treatment, characterized in that, Comprising: A cylinder structure (100), which includes an outer cylinder (101) and two inner guide cylinders (102) arranged inside the outer cylinder (101); A water distribution structure (200), a horizontal water inlet pipe (201) is fixedly connected to the side wall of the outer cylinder (101) below the two inner guide cylinders (102), the water inlet end of the water inlet pipe (201) extends to the outside of the outer cylinder (101), a plurality of water outlet ports are arranged on the side wall of the water inlet pipe (201) inside the outer cylinder (101), and the area between the outer cylinder (101) and the inner guide cylinder (102) forms an anaerobic zone; An MBBR treatment structure (300), which includes a plurality of MBBR fillers (301) arranged inside the inner guide cylinder (102), a stirring unit for preventing the accumulation of the MBBR fillers (301) is arranged on the bottom wall of the outer cylinder (101), a horizontal first intercepting plate (302) is fixedly connected to the inner wall of the inner guide cylinder (102) above the plurality of MBBR fillers (301), the area of the inner guide cylinder (102) below the first intercepting plate (302) forms an anoxic zone, a horizontal return pipe (303) is arranged in the anoxic zone, one end of the return pipe (303) is fixedly connected to the inner wall of one of the inner guide cylinders (102), and the other end of the return pipe (303) extends to the outside of the outer cylinder (101), a return port is arranged on the side wall of the return pipe (303) inside the inner guide cylinder (102), an MBR membrane module (304) is arranged in the inner guide cylinder (102) above the first intercepting plate (302), the area between the MBR membrane module (304) and the inner guide cylinder (102) forms an aerobic zone, and a horizontal second intercepting plate (305) is fixedly connected to the inner wall of the inner guide cylinder (102) above the MBR membrane module (304); the first intercepting plate (302) is used to prevent the MBBR fillers (301) from entering the aerobic zone, and the second intercepting plate (305) is used to prevent the MBR membrane module (304) from moving to its upper side; an air distribution pipe (313) is arranged on the inner wall of the inner guide cylinder (102) above the first intercepting plate (302), a plurality of aerators (314) are uniformly connected to the upper end of the air distribution pipe (313), and the MBBR fillers (301) are in a fluidized state under the action of circulation and aeration.

2. The MBBR device for sewage treatment according to claim 1, characterized in that: A sludge discharge pipe (202) that is internally and externally connected is fixedly connected to the side wall of the outer cylinder (101) below the water inlet pipe (201).

3. The MBBR device for sewage treatment according to claim 1, characterized in that: The stirring unit includes a rectangular housing (306) fixedly connected to the lower end of the outer cylinder (101). A driving motor (307) is fixedly connected to the center of the lower end of the rectangular housing (306). The driving shaft of the driving motor (307) extends into the rectangular housing (306), and vertical rotating shafts (308) are rotatably connected to the inner walls of the rectangular housing (306) on both sides of the driving shaft. The driving shaft is connected to the rotating shafts (308) on both sides through a transmission unit. The other end of the rotating shaft (308) penetrates the outer cylinder (101) and extends to the inner side of the inner draft tube (102), and a plurality of stirring blades (309) are fixedly connected to the outer side wall of the rotating shaft (308) on the inner side of the inner draft tube (102).

4. The MBBR device for sewage treatment according to claim 3, wherein: The transmission unit includes a first belt pulley (310) fixedly sleeved on the outer side of the driving shaft of the driving motor (307). A second belt pulley (311) corresponding to the first belt pulley (310) is fixedly sleeved on the outer side wall of the rotating shaft (308). The first belt pulley (310) is connected to the two second belt pulleys (311) through a belt (312).

5. The MBBR device for sewage treatment according to claim 4, wherein: The usage method of the MBBR device for sewage treatment includes the following steps: S1. Wastewater uniformly enters the inner draft tube (102) from the bottom through the water inlet pipe (201). Relying on the lifting effect of a plurality of aerators (314) on the aeration pipe (313), the water flow moves upward; S2. The sewage sequentially enters the anaerobic zone, the anoxic zone and the aerobic zone. First, a plurality of MBBR fillers (301) are arranged to preliminarily denitrify and dephosphorize the sewage, and the accumulation of the fillers is avoided by the combined use of the stirring unit. Subsequently, the water is self-aspirated out through the MBR membrane module (304), achieving the effect of further denitrification and dephosphorization; S3. Regular sludge discharge work can be realized through the sludge discharge pipe (202) arranged at the lower part of the outer cylinder (101).

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