CN216890316U

CN216890316U - Anaerobic and aerobic biological fluidized bed

Info

Publication number: CN216890316U
Application number: CN202220175127.7U
Authority: CN
Inventors: 姜保青
Original assignee: Guangdong Meilin Environmental Technology Co ltd
Current assignee: Guangdong Meilin Environmental Technology Co ltd
Priority date: 2022-01-23
Filing date: 2022-01-23
Publication date: 2022-07-05
Anticipated expiration: 2032-01-23

Abstract

The utility model discloses an anaerobic aerobic biological fluidized bed, which comprises a bed body, wherein an anaerobic tank is arranged at the lower end in the bed body, an aerobic tank is arranged at the upper end in the bed body, a partition plate is arranged between the anaerobic tank and the aerobic tank, an external pulse tank is arranged at the upper end of the aerobic tank, the lower end of the pulse tank is connected with a pulse main pipe penetrating through the anaerobic tank and the aerobic tank, the lower end of the pulse main pipe is connected with a water outlet pipe positioned at the bottom of the anaerobic tank, an external blower is also arranged at the upper end of the aerobic tank, the lower end of the blower is connected with an aerator pipe positioned in the aerobic tank, a plurality of aerators are arranged on the aerator pipe, the occupied area is small, the investment cost is low, the operation cost is low, the maintenance cost is low, mechanical equipment is few, only a lifting pump and the blower are used, the nitrification, the denitrification reflux, the sludge reflux and the sludge digestion are automatically completed without power equipment, the management is simple, the method has the advantages of no need of human attendance, full-automatic treatment and less sludge amount, and only needs to discharge sludge for 1 time about 3-6 months.

Description

Anaerobic and aerobic biological fluidized bed

Technical Field

The utility model relates to a fluidized bed, in particular to an anaerobic and aerobic biological fluidized bed, belonging to the technical field of fluidized beds.

Background

The biological fluidized bed is a structure which takes sand (or anthracite, activated carbon and the like) as a filler and a biofilm carrier to improve the treatment efficiency of a biofilm process, wastewater flows through the sand bed from bottom to top to enable the carrier layer to be in a flowing state, so that the contact area of the biofilm and the wastewater is increased in unit time, oxygen is fully supplied, and the biological treatment process of the wastewater is enhanced by utilizing the boiling state of the filler. The surface area of the filler in the structure exceeds 3300m2/m3 filler, the biofilm growing on the filler rarely falls off, and a secondary sedimentation tank can be omitted. The concentration of the mixed liquid suspended solid in the bed reaches 8000-40000mg/L, the utilization rate of oxygen exceeds 90 percent, according to the semi-productive test result, when the residence time of the empty bed is 16-45 minutes, the removal rate of BOD and nitrogen is more than 90 percent, the grain diameter of the packing is 1mm, the expansion rate is 100 percent, and the BOD load is 16.6kg (BOD 5)/(m 3. d). The biological fluidized bed has high process efficiency, small occupied area and low investment, and is used for advanced treatment of sewage nitrification, denitrification and the like, secondary treatment of sewage and other industrial wastewater treatment containing phenol, pharmacy and the like in countries of America, Japan and the like.

The existing biological fluidized bed has more mechanical equipment, high maintenance cost and complex management, and needs to be managed by more people, so the utility model provides an anaerobic aerobic biological fluidized bed, and solves the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides an anaerobic and aerobic biological fluidized bed.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an anaerobic and aerobic biological fluidized bed is designed, which comprises a bed body, an anaerobic pool is arranged at the lower end in the bed body, an aerobic tank is arranged at the upper end in the bed body, a partition plate is arranged between the anaerobic tank and the aerobic tank, an external pulse tank is arranged at the upper end of the aerobic tank, the lower end of the pulse tank is connected with a pulse main pipe which passes through the anaerobic tank and the aerobic tank, the lower end of the pulse main pipe is connected with a water outlet pipe which is positioned at the bottom of the anaerobic tank, the upper end of the aerobic tank is also provided with an external air blower, the lower end of the air blower is connected with an aeration pipe positioned in the aerobic tank, a plurality of aerators are arranged on the aeration pipe, a reflux pool is arranged between the aerobic pool and the bed body, an upper reflux port and a lower reflux port which are communicated with the reflux pool are respectively arranged at the upper end and the lower end of the aerobic pool, the upper end outside of the bed body is equipped with the sedimentation tank, communicate through middle part overflow mouth between reflux tank and the sedimentation tank.

Preferably, a plurality of water outlets are arranged on the water outlet pipe.

Preferably, the partition plate is provided with a plurality of inlets and outlets.

Preferably, the lower end of the sedimentation tank is provided with a sedimentation port communicated with the reflux tank.

Preferably, the outer side of the settling port is provided with a water outlet overflow port.

The anaerobic and aerobic biological fluidized bed provided by the utility model has the beneficial effects that the process has the advantages that:

A. the occupied area is small, and the method is only 1/3-1/5 of the conventional A/O process.

B. The investment cost is low, and only 1/2-1/4 of the conventional A/O process is available.

C. The operation cost is low, and the operation cost is only 1/3-1/5 of the conventional A/O process.

D. The maintenance cost is low, the mechanical equipment is few, only a lifting pump and an air blower are used, the nitrification, the denitrification reflux, the sludge reflux and the sludge digestion are automatically completed, and power equipment is not needed.

E. The management is simple, the operation is not needed, and the full-automatic treatment is realized.

F. The sludge amount is small, and only 1 time of sludge is discharged in about 3-6 months.

Drawings

FIG. 1 is a schematic structural diagram of an anaerobic and aerobic biological fluidized bed proposed by the present invention;

FIG. 2 is a schematic top view of the anaerobic/aerobic biological fluidized bed according to the present invention;

FIG. 3 is a schematic view of the structure of the water outlet pipe of the anaerobic and aerobic biological fluidized bed provided by the present invention.

In the figure: the device comprises a bed body 1, an anaerobic tank 2, an aerobic tank 3, a partition plate 4, a pulse tank 5, a pulse main pipe 6, a water outlet pipe 7, a blower 8, an aeration pipe 9, an aerator 10, an upper return port 11, a lower return port 12, a return tank 13, a middle overflow port 14, a sedimentation tank 15, a water outlet overflow port 16, a sedimentation port 17 and an inlet and outlet 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, an anaerobic aerobic biological fluidized bed comprises a bed body 1, wherein an anaerobic tank 2 is arranged at the lower end inside the bed body 1, an aerobic tank 3 is arranged at the upper end inside the bed body 1, a partition plate 4 is arranged between the anaerobic tank 2 and the aerobic tank 3, an external pulse tank 5 is arranged at the upper end of the aerobic tank 3, a pulse main pipe 6 passing through the anaerobic tank 2 and the aerobic tank 3 is connected to the lower end of the pulse tank 5, a water outlet pipe 7 positioned at the bottom of the anaerobic tank 2 is connected to the lower end of the pulse main pipe 6, an external blower 8 is further arranged at the upper end of the aerobic tank 3, an aeration pipe 9 positioned in the aerobic tank 3 is connected to the lower end of the blower 8, a plurality of aerators 10 are arranged on the aeration pipe 9, a reflux tank 13 is arranged between the aerobic tank 3 and the bed body 1, an upper reflux port 11 and a lower reflux port 12 communicated with the reflux tank 13 are respectively arranged at the upper end and the lower reflux port 12 at the lower end of the aerobic tank 3, a sedimentation tank 15 is arranged on the outer side of the upper end of the bed body 1, and the reflux tank 13 is communicated with the sedimentation tank 15 through a middle overflow port 14.

Wherein, a plurality of water outlets are arranged on the water outlet pipe 7. Through the setting of pulse jar 5, sewage just can intermittent type nature get into the anaerobism pond, has a stirring effect to anaerobism pond water to the effect in anaerobism pond has been promoted.

Wherein, a plurality of inlets and outlets 18 are arranged on the clapboard 4. Through the arrangement of the inlet and the outlet 18, sewage enters the anaerobic tank 2, and sludge impurities in the sedimentation tank 15 fall into the anaerobic tank 2, so that the sewage is discharged through a slag discharge port arranged at the bottom of the anaerobic tank 2.

Wherein, the lower end of the sedimentation tank 15 is provided with a sedimentation port 17 communicated with the reflux tank 13. Through the setting of the sedimentation port 17, impurities in the sedimentation tank 15 enter the anaerobic tank 2 through the sedimentation port 17.

Wherein, the outer side of the settling port 17 is provided with a water outlet overflow port 16. The fluid bed treated water is discharged through a water outlet overflow 16.

The working principle is as follows: sewage is from bottom to top by 2 bottoms in anaerobism pond and is gone into good oxygen pond 3, under the air stripping condition of aerator 10, flows into backward flow pond 13 through last backward flow mouth 11, goes into good oxygen pond 3 through backward flow mouth 12 backward flow down, and biochemical back sewage flows into peripheral sedimentation tank 15 from oneself, and clear water is up to standard and discharges through play water overflow mouth 16, and mud passes through the precipitation mouth 17 of sedimentation tank 15 lower extreme, flows into anaerobism pond 2 from oneself, and the row's cinder notch through 2 lower extremes of anaerobism ponds sets up regularly discharges.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The anaerobic and aerobic biological fluidized bed is characterized in that: comprises a bed body (1), an anaerobic tank (2) is arranged at the lower end in the bed body (1), an aerobic tank (3) is arranged at the upper end in the bed body (1), a partition plate (4) is arranged between the anaerobic tank (2) and the aerobic tank (3), an external pulse tank (5) is arranged at the upper end of the aerobic tank (3), the lower end of the pulse tank (5) is connected with a pulse main pipe (6) which penetrates through the anaerobic tank (2) and the aerobic tank (3), the lower end of the pulse main pipe (6) is connected with a water outlet pipe (7) which is positioned at the bottom of the anaerobic tank (2), an external air blower (8) is further arranged at the upper end of the aerobic tank (3), an aeration pipe (9) which is positioned in the aerobic tank (3) is connected with the lower end of the air blower (8), a plurality of aerators (10) are arranged on the aeration pipe (9), a return tank (13) is arranged between the aerobic tank (3) and the bed body (1), the aerobic tank (3) is provided with an upper return port (11) and a lower return port (12) which are communicated with a return tank (13) at the upper end and the lower end respectively, a sedimentation tank (15) is arranged at the outer side of the upper end of the bed body (1), and the return tank (13) is communicated with the sedimentation tank (15) through a middle overflow port (14).

2. An anaerobic and aerobic biological fluidized bed according to claim 1, wherein the outlet pipe (7) is provided with a plurality of water outlets.

3. The fluidized bed of claim 1, wherein the partition (4) is provided with a plurality of ports (18).

4. The fluidized bed of anaerobic and aerobic organisms according to claim 1, wherein the lower end of the settling tank (15) is provided with a settling port (17) which is communicated with the reflux tank (13).

5. The fluidized bed of claim 4, wherein the outside of the settling port (17) is provided with a water outlet overflow port (16).