CN212655549U

CN212655549U - Pure oxygen aeration tank for sewage treatment

Info

Publication number: CN212655549U
Application number: CN202020872209.8U
Authority: CN
Inventors: 葛继光; 其他发明人请求不公开姓名
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-03-05
Anticipated expiration: 2030-05-22

Abstract

The utility model discloses a sewage treatment pure oxygen aeration tank, including the cell body, the blade is connected to the cell body internal rotation, the outer fixed connection gear motor of cell body, the cell body upside are equipped with the intake pipe, intake pipe lower extreme fixed connection gas distribution pipe is equipped with the gas distribution hole on the gas distribution pipe, cell body upside fixed connection outlet duct and reaction box are equipped with calcium hydrate solution in the reaction box, and in the outlet duct stretched into the reaction box, reaction box and intake pipe were linked together. The utility model has the advantages that: the speed reducing motor drives the blades to rotate, so that the oxygen content in the sewage is improved, and the sewage purification efficiency is improved; the pipe diameter of the gas outlet pipe is smaller than that of the gas inlet pipe, so that the oxygen pressure in the tank body is increased, and the oxygen content of the sewage is increased; oxygen which is not dissolved in the sewage enters the air inlet pipe again and is introduced into the sewage, production resources are saved, carbon dioxide generated by the respiratory metabolism of the microorganisms is introduced into the calcium hydroxide solution and is changed into calcium carbonate and water, so that the carbon dioxide is removed, the purity of the oxygen is improved, and the sewage purification efficiency is improved.

Description

Pure oxygen aeration tank for sewage treatment

Technical Field

The utility model relates to a sewage treatment technical field especially relates to a sewage treatment pure oxygen aeration tank.

Background

Pure oxygen aeration refers to an activated sludge biological treatment process in which pure oxygen (rich oxygen) is used to replace air for aeration, microorganisms in sewage provide a carbon source and an oxygen source by using sewage, and organic matters in the sewage are converted into carbon dioxide and water through the respiratory metabolism of the microorganisms, so that the sewage is purified. Compared with air aeration, the pure oxygen aeration oxygen transfer rate is high, the activated sludge concentration is high, so the organic matter removal rate can be improved, the volume of an aeration tank is greatly reduced, the residual sludge amount is small, the sludge has good settleability and is not easy to expand, high-concentration dissolved oxygen can be kept in the aeration tank, the impact load resistance is better, and the oxygen aeration method has the great characteristic that the treatment efficiency is obviously higher than that of an air method.

Pure oxygen aeration needs to be equipped with oxygen generation equipment or needs external liquid oxygen supply, and after oxygen is introduced into the aeration tank in the conventional pure oxygen aeration tank, oxygen which is not dissolved in sewage is often directly discharged into the air, so that resource waste is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a pure oxygen aeration tank for sewage treatment.

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

a pure oxygen aeration tank for sewage treatment comprises a tank body, wherein the inner side of the tank body is rotatably connected with a rotating shaft, the outer side of the rotating shaft is fixedly connected with a spiral blade, the outer side of the tank body is fixedly connected with a speed reducing motor used for driving the rotating shaft to rotate, the upper end of one side of the tank body is provided with a water inlet, the water inlet is fixedly connected with a water inlet pipe, a first valve is fixedly connected on the water inlet pipe, the lower end of one side of the tank body is provided with a water outlet, the water outlet is fixedly connected with a water outlet pipe, the water outlet pipe is fixedly connected with a second valve, the upper side of the tank body is fixedly connected with a cover plate, the cover plate is provided with a mounting hole, the mounting hole is internally and fixedly connected with an air inlet pipe, the lower end of the air inlet pipe extends into, apron upside fixed connection reaction box is equipped with calcium hydrate solution in, the reaction box bottom is stretched into to the one end of outlet duct, and the reaction box upside is equipped with the second gas outlet, the interior fixed connection connecting pipe of second gas outlet, the other end and the intake pipe fixed connection of connecting pipe, and connecting pipe and intake pipe are linked together, fixed connection check valve on the connecting pipe.

Preferably, the bottom of the pool body is fixedly connected with a group of support plates, and the upper sides of the support plates are fixedly connected with the gas distribution pipe.

Preferably, the upper side of the reaction box is provided with a filling opening.

Preferably, the upper side of the filling opening is threadedly coupled to the sealing cap.

The utility model has the advantages that: the utility model provides a sewage treatment pure oxygen aeration tank, gear motor drive blade rotates, makes the inside wadding flow that produces of sewage, and the sewage surface produces the vibration wave, prolongs the mixing time of oxygen and sewage, increases the area of contact of sewage surface and oxygen to improve the oxygen content in the sewage, improve sewage purification efficiency; the pipe diameter of the gas outlet pipe is smaller than that of the gas inlet pipe, so that the oxygen pressure in the tank body is increased, and the oxygen content of the sewage is increased; oxygen which is not dissolved in the sewage enters the air inlet pipe again and is introduced into the sewage, production resources are saved, mixed gas consisting of carbon dioxide generated by respiration and metabolism of microorganisms in the sewage and residual oxygen is introduced into calcium hydroxide solution, and the carbon dioxide and the calcium hydroxide are subjected to chemical reaction and are changed into calcium carbonate and water, so that the carbon dioxide in the mixed gas is removed, the purity of the oxygen is improved, and the sewage purification efficiency is further improved.

Drawings

FIG. 1 is a schematic diagram of a basic mechanism of a pure oxygen aeration tank for sewage treatment provided by the present invention;

fig. 2 is a schematic structural view of the gas distribution pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in figures 1-2, the utility model provides a pure oxygen aeration tank for sewage treatment, which comprises a tank body 1, wherein two inner walls of the tank body 1 are both provided with a rotating hole, the two rotating holes are coaxially arranged, the rotating shaft 2 is rotatably connected in the two rotating holes, a spiral blade 3 is fixedly welded on the outer side of the rotating shaft 2, the outer side of the tank body 1 is fixedly connected with a speed reducing motor 4 through a bolt, a sealing ring is fixedly sleeved in the rotating hole, a main shaft of the speed reducing motor 4 extends into the rotating hole and is fixedly connected with the rotating shaft 2 through a shaft coupling, the upper end of one side of the tank body 1 is provided with a water inlet, the water inlet is fixedly connected with a water inlet pipe 5 through a thread, the water inlet pipe 5 is fixedly connected with a first valve 6 through a bolt, the lower end of one side of the tank body 1 is provided with a water outlet, the water, the cover plate 9 is provided with a mounting hole, an air inlet pipe 10 is fixedly welded in the mounting hole, the lower end of the air inlet pipe 10 extends into the bottom of the tank body 1 and is fixedly welded with a spiral air distribution pipe 11, the air inlet pipe 10 is communicated with the air distribution pipe 11, a group of air distribution holes (not shown in the drawing) are uniformly arranged on the air distribution pipe 11, a group of support plates 16 are fixedly welded at the bottom of the tank body 1, the upper sides of the support plates 16 are fixedly welded with the air distribution pipe 11, the support plates 16 are used for supporting the weight of the air distribution pipe 11 and the reaction force generated when the air distribution holes exhaust, the phenomenon that the air distribution pipe 11 shakes to cause the desoldering of the air inlet pipe 10 is avoided, the cover plate 9 is provided with a first air outlet, the first air outlet is fixedly connected with an air outlet pipe 12 through threads, the pipe diameter of the air outlet pipe 12, 9 upside welded fastening reaction box 13 of apron, the calcium hydrate solution is equipped with in the

reaction box

13, 13 upsides of reaction box are equipped with the round hole, 13 bottoms of reaction box are stretched into from the round hole to the one end of outlet duct 12, the outer wall welded fastening of outlet duct 12 is in the round hole, 13 upsides of reaction box are equipped with the second gas outlet, through screw thread fixed connection connecting pipe 14 in the second gas outlet, connecting pipe 14's the other end and intake pipe 10 welded fastening, connecting pipe 14 and intake pipe 10 are linked together, pass through screw thread fixed connection check valve 15 on the connecting pipe 14, check valve 15 can let oxygen in the reaction box 13 enter into in the intake pipe 10, block simultaneously that the oxygen in the intake pipe 10 enters into in the reaction box 13 from connecting pipe.

The upper side of the reaction box 13 is provided with a liquid adding port 17, the liquid adding port 17 is used for adding calcium hydroxide aqueous solution, and the upper side of the liquid adding port 17 is in threaded connection with a sealing cover.

When using, open first valve 6 and close in second valve 8 lets sewage get into cell body 1, let in oxygen to gas distribution pipe 11 through intake pipe 10, oxygen evenly lets in sewage from the gas distribution hole on the gas distribution pipe 11, start gear motor 4 and drive blade 3 and rotate, blade 3 stirs sewage, make the inside wadding flow that produces of sewage, the sewage surface produces the oscillation wave, avoid oxygen vertical bottom from cell body 1 to emerge the top of cell body 1 inside, prolong the mixing time of oxygen and sewage, increase the area of contact of sewage surface and oxygen, thereby improve the oxygen content of sewage, and then improved sewage purification efficiency.

Carbon dioxide that the metabolism produced is breathed to the microorganism in the sewage, and oxygen that does not dissolve in the sewage constitutes mist, mist discharges into the calcium hydrate solution through outlet duct 12, carbon dioxide and calcium hydrate aqueous solution take place chemical reaction, become calcium carbonate and water and stay in reaction box 13, remaining oxygen enters into intake pipe 10 again through connecting pipe 14, let in sewage again, can cyclic utilization, the utilization ratio of oxygen has been improved, avoid extravagant.

To sum up, the utility model provides a sewage treatment pure oxygen aeration tank has solved current pure oxygen aeration tank and after letting in oxygen to the aeration tank in, the oxygen that does not dissolve in sewage often by direct discharge to the air in, causes the technical problem of wasting of resources.

Claims

1. The utility model provides a sewage treatment pure oxygen aeration tank, includes cell body (1), its characterized in that: the improved air distribution tank is characterized in that a rotating shaft (2) is rotatably connected to the inner side of the tank body (1), a spiral blade (3) is fixedly connected to the outer side of the rotating shaft (2), the outer side of the tank body (1) is fixedly connected with a speed reduction motor (4) for driving the rotating shaft (2), a water inlet is formed in the upper end of one side of the tank body (1), a water inlet fixedly connected with a water inlet pipe (5) is formed in the water inlet pipe (5), a first valve (6) is fixedly connected to the water inlet pipe (5), a water outlet is formed in the lower end of one side of the tank body (1), a water outlet fixedly connected with a water outlet pipe (7), a second valve (8) is fixedly connected to the water outlet pipe (7), a cover plate (9) is fixedly connected to the upper side of the tank body (1), a mounting hole is formed in the cover plate (9), an air, the air inlet pipe (10) is communicated with an air distribution pipe (11), a group of air distribution holes are uniformly arranged on the air distribution pipe (11), a first air outlet is arranged on the cover plate (9), an air outlet pipe (12) is fixedly connected at the first air outlet, the pipe diameter of the air outlet pipe (12) is smaller than that of the air inlet pipe (10), the upper side of the cover plate (9) is fixedly connected with a reaction box (13), the reaction box (13) is filled with calcium hydroxide solution, one end of the air outlet pipe (12) extends into the bottom of the reaction box (13), a second air outlet is arranged on the upper side of the reaction box (13), a connecting pipe (14) is fixedly connected in the second air outlet, the other end of the connecting pipe (14) is fixedly connected with the air inlet pipe (10), the connecting pipe (14) is communicated with the air inlet pipe (10), and the connecting pipe (14) is fixedly connected with a one-way valve (15).

2. The pure oxygen aeration tank for sewage treatment according to claim 1, characterized in that: the bottom of the pool body (1) is fixedly connected with a group of support plates (16), and the upper sides of the support plates (16) are fixedly connected with the gas distribution pipe (11).

3. The pure oxygen aeration tank for sewage treatment according to claim 1, characterized in that: the upper side of the reaction box (13) is provided with a liquid feeding port (17).

4. The pure oxygen aeration tank for sewage treatment according to claim 3, characterized in that: the upper side of the filling opening (17) is in threaded connection with a sealing cover.