CN217350938U

CN217350938U - Aeration tank for sewage treatment

Info

Publication number: CN217350938U
Application number: CN202221016933.6U
Authority: CN
Inventors: 亓栋; 颜秉海; 魏金美
Original assignee: Shandong Start Environmental Protection Engineering Co ltd
Current assignee: Shandong Start Environmental Protection Engineering Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-09-02
Anticipated expiration: 2032-04-29

Abstract

The utility model relates to a sewage treatment device technical field, in particular to aeration tank for sewage treatment, including the aeration tank body, the bottom fixed mounting of aeration tank body has the aeration pipe of a plurality of parallels, the gas outlet fixed connection of aeration pipe through main air supply pipe and air supply, main air supply pipe still is connected with the gas-liquid mixing device through sub-air supply pipe, the gas-liquid mixing device passes through the pipeline and is connected with the sewage pump, and the other end is connected with the water inlet of aeration tank body. The utility model increases the dissolved oxygen amount with the gas mixture before the sewage enters the aeration tank, and improves the sewage treatment effect.

Description

Aeration tank for sewage treatment

Technical Field

The utility model relates to a sewage treatment device technical field, in particular to an aeration tank for sewage treatment.

Background

The aeration tank is a structure for sewage treatment by an activated sludge process. A certain sewage retention time is provided in the tank, so that the oxygen quantity required by aerobic microorganisms and the mixing condition of full contact of sewage and activated sludge are met. Partial sewage is lower when getting into the aeration tank dissolved oxygen volume, and it is difficult to solve to rely on original aeration part alone, and directly reforms transform the aeration tank and wastes time and energy and influence the use.

Disclosure of Invention

The utility model provides an aeration tank for sewage treatment, which overcomes the defects of the prior art.

The utility model discloses a realize through following technical scheme:

the utility model provides an aeration tank for sewage treatment, includes the aeration tank body, the bottom fixed mounting of aeration tank body has a plurality of parallel aeration pipes, the aeration pipe is through the gas outlet fixed connection of main air supply pipe with the air supply, main air supply pipe 11 still is connected with gas-liquid mixing device through sub-air supply pipe, gas-liquid mixing device passes through the pipeline and is connected with the sewage pump, and the other end is connected with the water inlet of aeration tank body.

The liquid mixing arrangement includes fixed connection's play water section, transition in proper order, the section of intaking, the diameter of changeover portion is less than the diameter of play water section, the diameter of play water section equals the diameter of the section of intaking, changeover portion fixed mounting has the intake pipe, detachable installs the air cock in the intake pipe, the air cock can be dismantled with the first end of check valve and link, the second end and the sub-air source pipe of check valve can be dismantled and link.

A semicircular first grating plate is fixedly arranged in the water outlet section.

And a semicircular second grating plate is fixedly arranged in the water section.

The first grating plate and the second grating plate are distributed in a staggered mode.

Still include the preliminary sedimentation tank, communicate through the overflow hole between preliminary sedimentation tank and the aeration tank body, the bottom of sedimentation tank is through the input fixed connection of first sludge pipe with the sludge pump, the output of sludge pump passes through second sludge pipe and this body coupling of aeration tank.

The sludge discharge pipe is fixedly mounted on the second sludge pipe, the first valve body is mounted on the sludge discharge pipe, the second valve body is mounted on the second sludge pipe, and the sludge discharge pipe is located between the second valve body and the sludge pump.

The utility model discloses following technological effect has:

the utility model has simple structure, can be simply transformed on the basis of the existing aeration tank, and is firstly mixed with gas to increase the dissolved oxygen before the sewage enters the aeration tank, thereby improving the treatment effect; meanwhile, a pre-sedimentation tank is added, sludge can be settled in the pre-sedimentation tank and then is discharged through a sludge pump, so that the amount of sludge in the aeration tank can be reduced, and the dissolved oxygen amount of sewage is further adjusted; the sludge pump can also return the sludge for reuse.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic top view of the present invention.

FIG. 3 is a schematic view of the gas mixing section.

FIG. 4 is a schematic view of the internal structure of the water outlet end of the gas mixing section.

In the figure, 1-an aeration tank body, 2-an overflow port, 3-a pre-sedimentation tank, 4-a first sludge pipe, 5-a sludge pump, 6-a second sludge pipe, 7-a first valve body, 8-a sludge discharge pipe, 9-a second valve body, 10-an air source, 11-a main air source pipe, 12-a water inlet, 13-a sub air source pipe, 14-an air-liquid mixing device, 15-an aeration pipe, 16-an aeration disc, 17-a water outlet section, 18-a transition section, 19-a water inlet section, 20-an air inlet pipe, 21-an air nozzle, 22-a one-way valve, 23-a first grating plate and 24-a second grating plate.

Detailed Description

The following are only embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

In the present invention, the words describing the directional relationship such as "front", "back", "inner", "outer" are only used for convenience of description of the embodiment, and are not considered as limitations of the present invention. The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The fixed connection mode comprises but is not limited to a connection mode known in the prior art, such as welding, screwing, clamping, interference fit, integral forming and the like; the number of the plurality is more than one.

Fig. 4 to fig. 4 show an embodiment of the present invention. This embodiment provides an aeration tank for sewage treatment. The aeration tank comprises an aeration tank body 1 provided with a water inlet 12, a plurality of parallel aeration pipes 15 are fixedly arranged at the bottom of the aeration tank body 1, a plurality of aeration discs 16 are arranged on each aeration pipe 15, the aeration pipes 15 are fixedly connected with a main air source pipe 11, and the main air source pipe 11 is fixedly connected with an air outlet of an air source 10. The main gas source pipe 11 is also connected with a gas-liquid mixing device 14 through a sub gas source pipe 13, one end of the gas-liquid mixing device 14 is connected with a sewage pipeline, and the other end is connected with the water inlet 12.

The structure of the liquid mixing device 14 is shown in fig. 3 and fig. 4, and comprises a water outlet section 17, a transition section 18 and a water inlet section 19 which are fixedly connected in sequence, wherein the diameter of the water outlet section 17 is equal to that of the water inlet section 19, the diameter of the transition section 18 is smaller than that of the water outlet section 17, and the water outlet section 17, the transition section 18 and the water inlet section 19 are in smooth transition. An air inlet pipe 20 is fixedly installed on the transition section 18, the axis of the air inlet pipe 20 is perpendicular to the axis of the transition section 18, an air tap 21 is detachably installed in the air inlet pipe 20 through threads, the air tap 21 is detachably connected with the first end of a one-way valve 22 through threads, and the second end of the one-way valve 22 is detachably connected with the sub air source pipe 13 through threads. The water inlet section 19 is connected with the sewage pump through a pipeline, and the water outlet section 17 is fixedly connected with the water inlet 12.

A first grid plate 23 and a second grid plate 24 which are integrally semicircular are fixedly arranged in the water outlet section 17, and the first grid plate 23 and the second grid plate 24 are distributed in a staggered manner.

Sewage is through sewage pump sending to the section of intaking 19, then gets into changeover portion 8, because changeover portion 8 diameters are less, therefore rivers are faster, and the gas that the air supply provided mixes with sewage here, and then sewage gets into out water section 17, and the velocity of flow slows down, and in addition the blockking of first grid board 23 and second grid board 24, the vortex of production is that gas and sewage further mix the oxygen content that improves in the sewage. Then enters the aeration tank body 1 for aeration treatment.

The device also comprises a pre-sedimentation tank 3 fixedly arranged at one end of the aeration tank body 1, wherein the pre-sedimentation tank 3 is separated from the aeration tank body 1 by a partition plate, and the partition plate is provided with an overflow gap 2. The bottom of preliminary sedimentation tank 3 is equipped with sludge outlet, this sludge outlet is through the input fixed connection of first sludge pipe 4 with sludge pump 5, sludge pump 5's output passes through second sludge pipe 6 and is connected with aeration tank body 1, fixed mounting has sludge discharge pipe 8 on second sludge pipe 6, install first valve body 7 on the sludge discharge pipe 8, install second valve body 9 on the second sludge pipe 6, sludge discharge pipe 8 is located between second valve body 9 and sludge pump 5. The sewage through aeration treatment enters the pre-sedimentation tank 3 through the overflow port for pre-sedimentation, the sludge settled at the bottom of the pre-sedimentation tank 3 is pumped into the aeration tank body 1 through the sludge pump for cyclic utilization, and the sludge in the aeration tank body 1 can also be directly discharged through the first valve body 7 to reduce the amount of the sludge in the aeration tank body 1, so that the oxygen content of the sewage is improved.

During the use, sewage is first mixed with gas in the gas-liquid mixing device 14 and is carried out aeration treatment after improving the oxygen content of sewage and gets into aeration tank body 1, then gets into preliminary sedimentation tank 3 and deposits, and the mud of preliminary sedimentation tank 3 bottom is gone into aeration tank body 1 through the sludge pump and is recycled, also can close the second valve body, discharges the mud through first valve body 7 and reduces the sludge volume in the aeration tank body 1, improves the sewage oxygen content. The utility model discloses need not carry out the scale transformation to the pipeline of aeration tank body 1, it is less to the influence of normal use.

Claims

1. The utility model provides an aeration tank for sewage treatment, includes aeration tank body (1), the bottom fixed mounting of aeration tank body (1) has a plurality of parallel aeration pipes (15), aeration pipe (15) are through main air supply pipe (11) and air supply (10) gas outlet fixed connection, its characterized in that: the main air source pipe (11) is also connected with an air-liquid mixing device (14) through a sub air source pipe (13), the air-liquid mixing device (14) is connected with a sewage pump through a pipeline, and the other end of the air-liquid mixing device is connected with a water inlet (12) of the aeration tank body (1).

2. The aeration tank for wastewater treatment according to claim 1, wherein: liquid mixing arrangement (14) including fixed connection's play water section (17), changeover portion (18), intake section (19) in proper order, the diameter of changeover portion (18) is less than the diameter of play water section (17), the diameter of play water section (17) equals the diameter of intake section (19), changeover portion (18) fixed mounting has intake pipe (20), detachable installs air cock (21) in intake pipe (20), air cock (21) can be dismantled with the first end of check valve (22) and link, the second end and the son air supply pipe (13) of check valve (22) can be dismantled and link.

3. An aeration tank for wastewater treatment according to claim 2, characterized in that: a semicircular first grating plate (23) is fixedly arranged in the water outlet section (17).

4. An aeration tank for wastewater treatment according to claim 3, characterized in that: and a semicircular second grating plate (24) is fixedly arranged in the water section (17).

5. An aeration tank for wastewater treatment according to claim 4, characterized in that: the first grid plate (23) and the second grid plate (24) are distributed in a staggered manner.

6. The aeration tank for wastewater treatment according to any one of claims 1 to 5, wherein: still include preliminary sedimentation tank (3), communicate through overflow hole (2) between preliminary sedimentation tank (3) and aeration tank body (1), the bottom of sedimentation tank (3) is through the input fixed connection of first sludge pipe (4) and sludge pump (5), the output of sludge pump (5) is connected with aeration tank body (1) through second sludge pipe (6).

7. An aeration tank for wastewater treatment according to claim 6, characterized in that: fixed mounting has mud delivery pipe (8) on second sludge pipe (6), install first valve body (7) on mud delivery pipe (8), install second valve body (9) on second sludge pipe (6), mud delivery pipe (8) are located between second valve body (9) and sludge pump (5).