CN113754088A

CN113754088A - Aeration tank system for sewage treatment and working method thereof

Info

Publication number: CN113754088A
Application number: CN202111074472.8A
Authority: CN
Inventors: 胡文静; 高二东; 王琴; 朱琼琼
Original assignee: Anhui Zhenlu Environmental Protection Engineering Co ltd
Current assignee: Anhui Zhenlu Environmental Protection Engineering Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2021-12-07

Abstract

The invention discloses an aeration basin system for sewage treatment and a working method thereof in the field of sewage treatment. The invention can utilize the blown air to drive the lifting mechanism to slide along the extension direction of the main aeration pipeline, lift the activated sludge accumulated at the bottom of the aeration tank body along the passing route, and the activated sludge is driven by the gas exhausted from the aeration equipment to suspend in the sewage after being lifted, thereby preventing the suspended matters in the sewage from sinking, not only providing the oxygen required by the activated sludge during the work, but also leading the activated sludge to be capable of fully contacting with the sewage, increasing the reaction area of the activated sludge and improving the sewage treatment efficiency.

Description

Aeration tank system for sewage treatment and working method thereof

Technical Field

The invention belongs to the field of sewage treatment, and particularly relates to an aeration basin system for sewage treatment and a working method thereof.

Background

The aeration tank utilizes an activated sludge process for sewage treatment, and oxygen needs to be introduced into the aeration tank. For example, biological deamination is commonly used, requiring oxygen to participate in the nitration reaction,

the current modes of introducing air are a blast aeration method and a mechanical aeration method, wherein the blast aeration method generates certain air volume through an aeration blower to increase enough dissolved oxygen in water so as to meet the oxygen required by the growth of aerobes. The aeration process of the blower is a process for transferring molecular mass between gas and liquid, so that the gas is fully diffused and contacted in the liquid and suspended matters in the liquid are prevented from sinking.

In prior art, because make gaseous abundant diffusion contact in liquid and prevent in the liquid that the suspended solid sinks, aeration conduit sets up the exhaust bottom the aeration tank usually, makes gaseous whole water of passing that rises from aeration tank bottom, but often has partial activated sludge to pile up in the cell body bottom for a long time in the course of the work, and does not participate in the mud backward flow process, can make bottom layer mud anaerobism and make mud age overlength like this, cause the anaerobism to increase, the COD clearance descends, influence sewage treatment efficiency. And activated sludge piles up and can make the area of contact of activated sludge and sewage reduce in cell body bottom, is unfavorable for activated sludge to carry out aerobic reaction, if the raising mechanism who additionally adopts independent power supply raises and piles up activated sludge, increases manufacturing cost. Therefore, there is a need for an aeration tank system for sewage treatment and a working method thereof, which can automatically raise sludge accumulated at the bottom of the aeration tank to suspend in liquid for aerobic reaction, without an additional power source, thereby improving sewage treatment efficiency and saving cost.

Disclosure of Invention

The invention aims to provide an aeration basin system for sewage treatment and a working method thereof, which aim to solve the problems of the prior art in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an aeration tank system for sewage treatment and a working method thereof comprise a tank body, an aeration fan and aeration equipment, wherein the aeration equipment comprises a main aeration pipeline paved at the bottom of the tank body and a lifting mechanism sliding along the extension direction of the main aeration pipeline, and the lifting mechanism is used for lifting activated sludge at the bottom of the tank body.

In the existing activated sludge sewage treatment process, a blast aeration method is often adopted, and because the blast aeration method is to make gas fully diffuse and contact in liquid and prevent suspended matters in the liquid from sinking, an aeration pipeline is usually arranged at the bottom of an aeration tank to exhaust gas so that the gas rises from the bottom of the aeration tank and penetrates through the whole water body. However, in the actual working process, part of activated sludge is often accumulated at the bottom of the tank body for a long time and does not participate in the sludge backflow process, so that the bottom sludge is anaerobic, the sludge is too old, anaerobic bacteria are increased, the COD removal rate is reduced, and the sewage treatment efficiency is influenced. Therefore, there is a need for an aeration tank system for sewage treatment and a method for operating the same, which can raise sludge accumulated at the bottom of the aeration tank to be suspended in a liquid for aerobic reaction, thereby improving the sewage treatment efficiency. As shown in figures 1 and 2, when the invention works, sewage is firstly discharged into the tank body, the aeration fan is started, at the moment, external air enters the sewage through the main aeration pipeline paved at the bottom of the tank body, and the lifting mechanism starts to work. The lifting mechanism is driven by blown air to slide along the extension direction of the main aeration pipeline, and the lifting mechanism lifts the activated sludge accumulated at the bottom of the aeration tank body along the passing route while sliding. The invention can utilize the blown air to drive the lifting mechanism to slide along the extension direction of the main aeration pipeline, lift the activated sludge accumulated at the bottom of the aeration tank body along the passing route, and the activated sludge is driven by the gas exhausted from the aeration equipment to suspend in the sewage after being lifted, thereby preventing the suspended matters in the sewage from sinking, providing the oxygen required by the activated sludge during the work, ensuring that the activated sludge can fully contact with the sewage, increasing the reaction area of the activated sludge and improving the sewage treatment efficiency.

As a further scheme of the present invention, the main aeration pipeline includes a first aeration pipeline and a second aeration pipeline that are parallel to each other, two ends of the first aeration pipeline and the second aeration pipeline are respectively communicated through a first communication pipe and a second communication pipe, the first communication pipe is communicated with the aeration fan through a reversing mechanism, and the reversing mechanism is configured to control air blown by the aeration fan to blow towards the first aeration pipeline or the second aeration pipeline.

In actual work, sewage lasts the aeration tank that flows into, and aeration fan need last for a long time to the air of drum in the sewage, so this also requires to be blown into air drive's raising mechanism and can carry out reciprocating motion by the continuation, raises repeatedly the active sludge who piles up in aeration tank body bottom, avoids the suspended solid to sink. If carry out the switching-over blast air through two aeration fans and make the mechanism of raiseing carry out reciprocating motion, this has additionally increased a equipment, has improved the cost greatly. Therefore, as shown in fig. 4 and 6, the present invention is provided with the first aeration pipe and the second aeration pipe which are parallel to each other, and the two lifting mechanisms respectively slide on the first aeration pipe and the second aeration pipe during operation. When the sewage treatment device starts to work, blown air enters from the first communication pipe, flows to the second aeration pipe through the first aeration pipe, and continuously enters sewage in the flowing process. When the lifting mechanism slides to the end parts of the first aeration pipeline and the second aeration pipeline, the reversing mechanism starts to work, so that blown air enters from the first communicating pipe, flows to the first aeration pipeline through the second aeration pipeline, and continuously enters sewage in the flowing process. The lifting mechanism is driven by blown air to reset and slide until sliding to the end parts of the first aeration pipeline and the second aeration pipeline, and the reversing mechanism reverses again and reciprocates circularly. The invention can change the direction of the blown air through the reversing mechanism, so that the lifting mechanism can reciprocate under the driving of the blown air under the condition that the aeration fan continuously blows air, and can lift the activated sludge accumulated at the bottom of the aeration tank body repeatedly, thereby avoiding the sinking of suspended matters, improving the contact area of the activated sludge and sewage and improving the sewage treatment efficiency.

As a further scheme of the invention, the lifting mechanism comprises a sliding scraper which is respectively and slidably mounted at the bottom of the outer surface of the first aeration pipeline and the bottom of the outer surface of the second aeration pipeline and a driving plate which is respectively and slidably mounted in the first aeration pipeline and the second aeration pipeline, the upper end of the sliding scraper is a magnetic part, and the lower end of the sliding scraper is a scraping part; the drive plate is made of a permanent magnet and is hollow. As shown in fig. 4, 5 and 12, when the aeration tank works, blown air drives the driving plate to slide in the first aeration pipe and the second aeration pipe, the driving plate is a permanent magnet, the upper end of the sliding scraper is a magnetic part, so that the driving plate can drive the sliding scraper to slide on the outer surfaces of the first aeration pipe and the second aeration pipe, and the scraping part at the lower end of the sliding scraper lifts activated sludge accumulated at the bottom of the aeration tank body in the sliding process. The air blown by the aeration fan is used for driving the sliding scraper to slide, no additional power source is needed, the drive plate is arranged to be hollow, so that the air can be scattered, the air enters the sewage in a small-ball gas mode, the gas is in full contact with the sewage, and the improvement of dissolved oxygen in the sewage is facilitated.

As a further scheme of the present invention, the reversing mechanism includes a reversing fan column rotatably mounted at a communication position of the first communication pipe and the aeration fan, the reversing fan column is fixedly mounted on a third rotation shaft, the third rotation shaft is further fixedly mounted with a third synchronizing wheel, a first synchronizing wheel and a second synchronizing wheel are respectively disposed at a connection position of the first communication pipe and the first aeration pipeline and a connection position of the first communication pipe and the second aeration pipeline, the first synchronizing wheel, the second synchronizing wheel and the third synchronizing wheel are connected by a synchronous belt, the first synchronizing wheel and the second synchronizing wheel are respectively fixedly mounted on the first rotation shaft and the second rotation shaft, the first rotation shaft and the second rotation shaft are respectively fixedly mounted with a first gear and a second gear, the first gear and the second gear are respectively engaged with a first rack and a second rack, the first rack, the second rack is fixed on the first rotation shaft, the second gear is fixed on the second rotation shaft, and the first rack and the second rack are respectively engaged with the second rack, The second rack is respectively installed at the bottom of the outer surfaces of the first aeration pipeline and the second aeration pipeline in a sliding mode, and the sliding direction of the second rack is the same as that of the lifting mechanism.

The invention needs to use the reversing mechanism to control the air blown out by the aeration fan to blow to the first aeration pipeline or the second aeration pipeline, if an electric control mode is used, the regular maintenance is needed because of the instability of the circuit, and the maintenance is not facilitated because the aeration equipment is positioned at the bottom of the tank body, thereby greatly increasing the labor intensity of workers. A mechanical structure is required to effect the reversal of the reversing mechanism. As shown in fig. 6 to 8 and 11, when the present invention is operated, the sliding scraper slides under the driving of the blown air, and as shown in fig. 7, when the sliding scraper slides to the end of the first aeration pipe, the sliding scraper drives the first rack to move, and because the first rack is engaged with the first gear fixedly installed on the first rotating shaft, the driver rack slides to drive the first rotating shaft to rotate, so that the first synchronizing wheel fixedly installed on the first rotating shaft rotates. As shown in fig. 11, the first synchronous wheel rotates, and the third synchronous wheel also rotates through the transmission of the synchronous belt, so that the reversing fan column coaxially mounted with the third synchronous wheel also rotates 180 degrees, and at the moment, the air blown out by the original aeration fan blows to the second aeration pipeline and is also reversed and not blown to the first aeration pipeline, so that the reversing is realized. The same is true when the second rack slides. The invention can realize mechanical automatic reversing by driving the reversing fan column by air blown in, and has simple and stable structure. The rack is driven to rotate by the movement of the sliding scraper, the reversing fan column is driven to rotate after the sliding scraper moves for one stroke, the problem that the sewage treatment effect is influenced due to the incomplete lifting route of the sliding scraper is avoided, the reversing mechanism of the structure adopts a mechanical structure, an additional power source is not needed for reversing, and the structure is simple and stable.

As a further scheme of the invention, the aeration equipment further comprises auxiliary aeration pipelines rotatably mounted on two sides of the main aeration pipeline, a fourth rotating shaft is rotatably mounted in each auxiliary aeration pipeline, the upper end of each fourth rotating shaft extends to the outside of each auxiliary aeration pipeline and is fixedly provided with a fan-shaped aerator, the lower end of each fourth rotating shaft extends to the outside of each auxiliary aeration pipeline and is fixedly provided with a rotating scraper, the middle end of each fourth rotating shaft is fixedly provided with rotating fan blades, and exhaust holes of the fan-shaped aerators are arranged at intervals along the fan-shaped edges of the fan-shaped aerators and point to the circle center of the fan shape.

The invention can only lift the activated sludge accumulated below the main aeration pipeline because of the limitation of the sliding route of the sliding scraper, but in the actual work, a large area of the bottom of the aeration tank body is still accumulated with the activated sludge, and the activated sludge also needs to be lifted. As shown in fig. 3 and 12, the air blown by the aeration fan enters the auxiliary aeration pipe through the main aeration pipe. The air enters into and assists aeration pipeline in getting into the sewage through the fan-shaped aerator of its top, the air can drive the rotation flabellum rotation at fourth axis of rotation middle part after entering and assisting aeration pipeline, it rotates to rotate flabellum drive fourth axis of rotation, fix the fan-shaped aerator on the fourth rotation post like this and rotate the scraper blade and also can rotate, the rotation of fan-shaped aerator can make and throw away with the route of parabola through this combustion gas, the area of contact of air with sewage has been increased, the treatment effeciency of sewage has been improved. The rotation of the rotating scraper can cause the accumulated activated sludge below the rotating scraper to be raised and suspended in the sewage, so that suspended matters in the sewage are prevented from sinking. The contact area of the sewage and the oxygen is increased, the dissolution of the sewage is facilitated, the activated sludge can be fully contacted with the sewage, the reaction area of the activated sludge is increased, and the sewage treatment efficiency is improved.

As a further scheme of the invention, one end of the auxiliary aeration pipeline close to the main aeration pipeline is fixedly provided with a helical gear, and helical gears can be meshed with the helical gears and racks which are fixedly arranged on two sides of the sliding scraper.

The main aeration pipeline and the auxiliary aeration pipeline can cover the bottom of most of the tank body, but a sludge accumulation area still exists between two adjacent auxiliary aeration pipelines. As shown in fig. 12, when the present invention is operated, the sliding scraper moves along the main aeration pipe, when the sliding scraper moves to the joint of the auxiliary aeration pipe and the main aeration pipe, the helical gear rack is engaged with the helical gear to drive the helical gear to rotate, so that the auxiliary aeration pipe also rotates, the gas discharged from the fan-shaped aerator can wash the area between two adjacent auxiliary aeration pipes where sludge still accumulates, so that the gas can suspend or move to the lower part of the auxiliary aeration pipe, which is convenient for the rotating scraper to lift next time, and the auxiliary aeration pipe also increases the area through which the gas discharged from the fan-shaped aerator flows, so that the contact area between the gas and the sewage is increased, the oxygen is dissolved, and the sewage treatment efficiency is improved.

As a further scheme of the invention, the main aeration pipeline is a square pipeline. The purpose of this setting is in order to make things convenient for the removal of drive plate, also is convenient for the drive plate to pass through magnetism to inhale the drive slip scraper and remove.

An aeration tank working method for sewage treatment is suitable for the aeration tank system, and mainly comprises the following steps:

s1: discharging sewage into the tank body, and starting an aeration fan;

s2: outside air enters the main aeration pipeline and the auxiliary aeration pipeline through the reversing mechanism, and the lifting mechanism starts to work to lift activated sludge accumulated at the bottom of the tank body;

s3: the raised activated sludge is raised by the airflow discharged by the aeration equipment to be suspended and fully contacted with the sewage to carry out aerobic reaction.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention can utilize the blown air to drive the lifting mechanism to slide along the extension direction of the main aeration pipeline, lift the activated sludge accumulated at the bottom of the aeration tank body along the passing route, and the activated sludge is driven by the gas exhausted from the aeration equipment to suspend in the sewage after being lifted, thereby preventing the suspended matters in the sewage from sinking, providing the oxygen required by the activated sludge during the work, ensuring that the activated sludge can be fully contacted with the sewage, increasing the reaction area of the activated sludge, improving the sewage treatment efficiency and saving the cost.

2. The fan-shaped aerator can drive the rotating fan blades in the middle of the fourth rotating shaft to rotate through the blown air, and then drives the fan-shaped aerator and the rotating scraper to rotate. The rotation of the fan-shaped aerator can throw the gas exhausted by the fan-shaped aerator out in a parabolic path, so that the contact area of the air and the sewage is increased, and the sewage treatment efficiency is improved. The rotation of the rotating scraper can cause the accumulated activated sludge below the rotating scraper to be raised and suspended in the sewage, so that suspended matters in the sewage are prevented from sinking. The contact area of the sewage and the oxygen is increased, the dissolution of the sewage is facilitated, the activated sludge can be fully contacted with the sewage, the reaction area of the activated sludge is increased, and the sewage treatment efficiency is improved. .

3. The auxiliary aeration pipeline can be driven to rotate by the sliding of the sliding scraper, so that the gas discharged from the fan-shaped aerator can wash the area still having sludge accumulation between two adjacent auxiliary aeration pipelines to enable the area to be suspended or moved to the lower part of the auxiliary aeration pipeline, the rotating scraper is convenient to lift next time, the auxiliary aeration pipeline also enables the area through which the gas discharged from the fan-shaped aerator flows to be increased, the contact area of the gas and sewage is increased, the oxygen is convenient to dissolve, and the sewage treatment efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of an aeration basin system for sewage treatment according to the present invention;

FIG. 2 is a schematic structural view of the depollution tank and the aeration fan of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2 according to the present invention;

FIG. 4 is a schematic structural view of the lift mechanism of the present invention;

FIG. 5 is an enlarged view of a portion B of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic structural view of the reversing mechanism of the present invention;

FIG. 7 is an enlarged view of a portion C of FIG. 6 in accordance with the present invention;

FIG. 8 is an enlarged view of a portion D of FIG. 6 in accordance with the present invention;

FIG. 9 is an enlarged view of a portion E of FIG. 6 in accordance with the present invention;

FIG. 10 is a schematic view showing the structure of a main aeration conduit according to the present invention;

FIG. 11 is an enlarged view of a portion F of FIG. 10 in accordance with the present invention;

FIG. 12 is a schematic view of the construction of an auxiliary aeration conduit according to the present invention;

FIG. 13 is a flow chart showing the operation of the aeration tank for sewage treatment according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-tank body, 2-aeration fan, 3-main aeration pipeline, 4-lifting mechanism, 5-first aeration pipeline, 6-second aeration pipeline, 7-first communicating pipe, 8-second communicating pipe, 9-reversing mechanism, 10-sliding scraper, 11-driving plate, 12-magnetic suction part, 13-scraping part, 14-reversing fan column, 15-third rotating shaft, 16-third synchronizing wheel, 17-first synchronizing wheel, 18-second synchronizing wheel, 19-synchronous belt, 20-first rotating shaft, 21-second rotating shaft, 22-first gear, 23-second gear, 24-first rack, 25-second rack, 26-auxiliary aeration pipeline, 27-fourth rotating shaft, 28-fan aerator, 29-rotating scraper, 30-rotating fan blade, 31-helical gear and 32-helical rack.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-13, the present invention provides a technical solution: the utility model provides an aeration basin system for sewage treatment, includes cell body 1, aeration fan 2 and aeration equipment, aeration equipment is including laying in the gliding mechanism 4 of raiseing of main aeration pipeline 3 of cell body 1 bottom and along its extension direction, the mechanism 4 of raiseing is used for raising the activated sludge of cell body 1 bottom.

In the existing activated sludge sewage treatment process, a blast aeration method is often adopted, and because the blast aeration method is to make gas fully diffuse and contact in liquid and prevent suspended matters in the liquid from sinking, an aeration pipeline is usually arranged at the bottom of an aeration tank to exhaust gas so that the gas rises from the bottom of the aeration tank and penetrates through the whole water body. However, in the actual working process, part of activated sludge is often accumulated at the bottom of the tank body 1 for a long time and does not participate in the sludge backflow process, so that the bottom sludge is anaerobic, the sludge is too old, anaerobic bacteria are increased, the COD removal rate is reduced, and the sewage treatment efficiency is influenced. Therefore, there is a need for an aeration tank system for sewage treatment and a method for operating the same, which can raise sludge accumulated at the bottom of the aeration tank to be suspended in a liquid for aerobic reaction, thereby improving the sewage treatment efficiency. As shown in figures 1 and 2, when the invention works, sewage is firstly discharged into the tank body 1, the aeration fan 2 is started, at the moment, external air enters the sewage through the main aeration pipeline 3 laid at the bottom of the tank body 1, and the lifting mechanism 4 starts to work. The lifting mechanism 4 is driven by blown air to slide along the extension direction of the main aeration pipeline 3, and the lifting mechanism 4 lifts the activated sludge accumulated at the bottom of the aeration tank body 1 along the passing route while sliding. The invention can utilize the blown air to drive the lifting mechanism 4 to slide along the extension direction of the main aeration pipeline 3, lift the activated sludge accumulated at the bottom of the aeration tank body 1 along the passing route, and the activated sludge is driven by the gas exhausted from the aeration equipment to suspend in the sewage after being lifted, thereby preventing the suspended matters in the sewage from sinking, providing the oxygen required by the activated sludge during the work, ensuring that the activated sludge can fully contact with the sewage, increasing the reaction area of the activated sludge and improving the sewage treatment efficiency.

As a further scheme of the invention, the main aeration pipeline 3 comprises a first aeration pipeline 5 and a second aeration pipeline 6 which are parallel to each other, two ends of the first aeration pipeline 5 and the second aeration pipeline 6 are respectively communicated through a first communicating pipe 7 and a second communicating pipe 8, the first communicating pipe 7 is communicated with the aeration fan 2 through a reversing mechanism 9, and the reversing mechanism 9 is used for controlling air blown out by the aeration fan 2 to blow towards the first aeration pipeline 5 or the second aeration pipeline 6.

In actual work, sewage lasts the aeration tank that flows into, and aeration fan 2 need be for a long time continuously to the air of drum in the sewage, so this also requires to be blown into air drive's raising mechanism 4 and can carry out reciprocating motion by the persistence, lifts repeatedly the activated sludge who piles up in aeration tank body 1 bottom, avoids the suspended solid to sink. If carry out the switching-over blast air through two aeration fans 2 and make the mechanism 4 of raising carry out reciprocating motion, this has additionally increased a equipment, has improved the cost greatly. Therefore, as shown in fig. 4 and 6, the present invention is provided with the first aeration pipe 5 and the second aeration pipe 6 which are parallel to each other, and the two raising mechanisms 4 slide on the first aeration pipe 5 and the second aeration pipe 6 respectively when in operation. When the sewage treatment device starts to work, blown air enters from the first communication pipe 7, flows to the second aeration pipeline 6 through the first aeration pipeline 5, and continuously enters sewage in the flowing process. When the lifting mechanism 4 slides to the end parts of the first aeration pipeline 5 and the second aeration pipeline 6, the reversing mechanism 9 starts to work, so that blown air enters from the first communication pipe 7 and flows to the first aeration pipeline 5 through the second aeration pipeline 6, and the air continuously enters the sewage in the flowing process. The lifting mechanism 4 is driven by blown air to reset and slide until sliding to the end parts of the first aeration pipeline 5 and the second aeration pipeline 6, and the reversing mechanism 9 reverses again and reciprocates circularly. The invention can change the direction of the blown air through the reversing mechanism 9, so that the lifting mechanism 4 can reciprocate under the driving of the blown air under the condition that the aeration fan 2 continuously blows air, and can repeatedly lift the activated sludge accumulated at the bottom of the aeration tank body 1, thereby avoiding the sinking of suspended matters, improving the contact area of the activated sludge and sewage and improving the sewage treatment efficiency.

As a further scheme of the present invention, the lifting mechanism 4 comprises a sliding scraper 10 slidably mounted at the bottom of the outer surface of the first aeration pipe 5 and the second aeration pipe 6 respectively, and a driving plate 11 slidably mounted inside the first aeration pipe 5 and the second aeration pipe 6 respectively, wherein the upper end of the sliding scraper 10 is a magnetic part 12, and the lower end is a scraping part 13; the driving plate 11 is made of a permanent magnet and is hollow. As shown in fig. 4, 5 and 12, in the present invention, when the aeration tank is operated, the blown air drives the driving plate 11 to slide in the first aeration pipe 5 and the second aeration pipe 6, the driving plate 11 is a permanent magnet, and the upper end of the sliding scraper 10 is a magnetic part 12, so that the driving plate 11 drives the sliding scraper 10 to slide on the outer surfaces of the first aeration pipe 5 and the second aeration pipe 6, and the lower end scraping part 13 of the sliding scraper 10 lifts the activated sludge accumulated on the bottom of the aeration tank body 1 during the sliding process. According to the invention, the air blown by the aeration fan 2 is used for driving the sliding scraper 10 to slide, no additional power source is needed, and the driving plate 11 is hollow, so that the air can be scattered, the air enters the sewage in a small gas ball mode, the gas is fully contacted with the sewage, and the improvement of dissolved oxygen in the sewage is facilitated.

As a further aspect of the present invention, the reversing mechanism 9 includes a reversing fan column 14 rotatably mounted at a position where the first communicating pipe 7 communicates with the aeration fan 2, the reversing fan column 14 is fixedly mounted on a third rotating shaft 15, a third synchronizing wheel 16 is further fixedly mounted on the third rotating shaft 15, a first synchronizing wheel 17 and a second synchronizing wheel 18 are respectively disposed at a joint of the first communicating pipe 7 and the first aeration pipe 5 and a joint of the first communicating pipe 7 and the second aeration pipe 6, the first synchronizing wheel 17, the second synchronizing wheel 18 and the third synchronizing wheel 16 are connected by a synchronizing belt 19, the first synchronizing wheel 17 and the second synchronizing wheel 18 are respectively fixedly mounted on a first rotating shaft 20 and a second rotating shaft 21, a first gear 22 and a second gear 23 are respectively fixedly mounted on the first rotating shaft 20 and the second rotating shaft 21, and the first gear 22, the second gear 23, The second gear 23 is respectively meshed with the first rack 24 and the second rack 25, the first rack 24 and the second rack 25 are respectively installed at the bottom of the outer surface of the first aeration pipeline 5 and the bottom of the outer surface of the second aeration pipeline 6 in a sliding mode, and the sliding direction of the first rack 24 and the second rack 25 is the same as that of the hoisting mechanism 4.

According to the invention, the reversing mechanism 9 is required to control the air blown out by the aeration fan 2 to blow to the first aeration pipeline 5 or the second aeration pipeline 6, if an electric control mode is adopted, regular maintenance is required due to the instability of a circuit, and the aeration equipment is positioned at the bottom of the tank body 1, so that maintenance is not facilitated, and the labor intensity of workers is greatly increased. A mechanical structure is required to effect the reversal of the reversing mechanism 9. As shown in fig. 6 to 8 and 11, when the sliding scraper 10 slides under the driving of blown air in the operation of the present invention, as shown in fig. 7, when the sliding scraper 10 slides to the end of the first aeration pipe 5, the sliding scraper 10 drives the first rack 24 to move, and since the first rack 24 is engaged with the first gear 22 and the first gear 22 is fixedly installed on the first rotating shaft 20, the first rotating shaft 20 is driven to rotate by the sliding of the driver rack, so that the first synchronizing wheel 17 fixedly installed on the first rotating shaft 20 rotates. As shown in fig. 11, the first synchronous wheel 17 rotates, and the third synchronous wheel 16 also rotates through the transmission of the synchronous belt 19, so that the reversing fan column 14 coaxially installed with the third synchronous wheel 16 also rotates 180 °, and at this time, the air blown by the original aeration fan 2 is blown to the second aeration pipe 6 and is also reversed and not blown to the first aeration pipe 5, so as to realize the reversing. The same is true when the second rack 25 slides. The invention can realize mechanical automatic reversing by driving the reversing fan column 14 by blown air, and has simple and stable structure. The rack is driven to rotate by the movement of the sliding scraper 10, the reversing fan column 14 is driven to rotate after the sliding scraper 10 moves for a stroke, the problem that the sewage treatment effect is influenced due to the incomplete lifting route of the sliding scraper 10 is solved, the reversing mechanism 9 adopts a mechanical structure, no additional power source is needed for reversing, and the structure is simple and stable.

As a further scheme of the present invention, the aeration apparatus further comprises auxiliary aeration pipelines 26 rotatably installed at both sides of the main aeration pipeline 3, a fourth rotating shaft 27 is rotatably installed in the auxiliary aeration pipelines 26, the upper end of the fourth rotating shaft 27 extends to the outside of the auxiliary aeration pipelines 26 and is fixedly installed with a fan-shaped aerator 28, the lower end extends to the outside of the auxiliary aeration pipelines 26 and is fixedly installed with a rotating scraper 29, the middle end is fixedly installed with rotating fan blades 30, and the exhaust holes of the fan-shaped aerator 28 are arranged at intervals along the fan-shaped edge of the fan-shaped aerator 28 and point to the center of the fan-shaped circle.

In the invention, because the sliding route of the sliding scraper 10 is limited, only the activated sludge accumulated below the main aeration pipeline 3 can be lifted, but in actual work, a large area of the bottom of the aeration tank body 1 is still accumulated with the activated sludge, and the activated sludge also needs to be lifted. As shown in fig. 3 and 12, the air blown by the aeration fan 2 passes through the main aeration pipe 3 and enters the auxiliary aeration pipe 26. The air enters into and assists aeration pipe 26 and gets into in the sewage through the fan-shaped aerator 28 of its top, the air can drive the rotation flabellum 30 rotation at fourth axis of rotation 27 middle part after entering and assist aeration pipe 26, rotation flabellum 30 drives fourth axis of rotation 27 and rotates, fix like this fan-shaped aerator 28 on the fourth rotation post and rotate scraper blade 29 and also can rotate, the rotation of fan-shaped aerator 28 can make and throw away with the route of parabola through this combustion gas, the area of contact of air with sewage has been increased, the treatment effeciency of sewage has been improved. The rotation of the rotating scraper 29 causes the accumulated activated sludge located therebelow to be raised and suspended in the sewage, preventing the suspended matter in the sewage from sinking. The contact area of the sewage and the oxygen is increased, the dissolution of the sewage is facilitated, the activated sludge can be fully contacted with the sewage, the reaction area of the activated sludge is increased, and the sewage treatment efficiency is improved.

As a further scheme of the invention, one end of the auxiliary aeration pipe 26 close to the main aeration pipe 3 is fixedly provided with a helical gear 31, helical gear racks 32 are fixedly arranged on both sides of the sliding scraper 10, and the helical gear 31 can be meshed with the helical gear racks 32.

The main aeration pipeline 3 and the auxiliary aeration pipelines 26 of the invention can cover most of the bottom of the tank body 1, but a sludge accumulation area still exists between two adjacent auxiliary aeration pipelines 26. As shown in fig. 12, in the present invention, when the sliding scraper 10 moves along the main aeration pipe 3, when the sliding scraper 10 moves to the connection position of the auxiliary aeration pipe 26 on the main aeration pipe 3, the helical rack 32 is engaged with the helical gear 31 to drive the helical gear 31 to rotate, so that the auxiliary aeration pipe 26 also rotates, the gas discharged from the fan-shaped aerator 28 can wash the area between two adjacent auxiliary aeration pipes 26 where the sludge still accumulates, so that the gas can suspend or move to the lower part of the auxiliary aeration pipe 26, which is convenient for the next lifting of the rotating scraper 29, and the auxiliary aeration pipe 26 also increases the area through which the gas discharged from the fan-shaped aerator 28 flows, increases the contact area between the gas and the sewage, facilitates the dissolution of oxygen, and improves the sewage treatment efficiency.

As a further scheme of the invention, the main aeration pipeline 3 is a square pipeline. The purpose of this arrangement is to facilitate movement of the drive plate 11, and also to facilitate movement of the drive plate 11 by magnetically driving the sliding scraper 10.

s1: discharging sewage into the tank body 1, and starting the aeration fan 2;

s2: outside air enters the main aeration pipeline 3 and the auxiliary aeration pipeline 26 through the reversing mechanism 9, and the lifting mechanism 4 starts to work to lift activated sludge accumulated at the bottom of the tank body 1;

The working principle is as follows: as shown in figures 1 and 2, when the invention works, sewage is firstly discharged into the tank body 1, the aeration fan 2 is started, at the moment, external air enters the sewage through the main aeration pipeline 3 laid at the bottom of the tank body 1, and the lifting mechanism 4 starts to work. The lifting mechanism 4 is driven by blown air to slide along the extension direction of the main aeration pipeline 3, and the lifting mechanism 4 lifts the activated sludge accumulated at the bottom of the aeration tank body 1 along the passing route while sliding. The invention can utilize the blown air to drive the lifting mechanism 4 to slide along the extension direction of the main aeration pipeline 3, lift the activated sludge accumulated at the bottom of the aeration tank body 1 along the passing route, and the activated sludge is driven by the gas exhausted from the aeration equipment to suspend in the sewage after being lifted, thereby preventing the suspended matters in the sewage from sinking, providing the oxygen required by the activated sludge during the work, ensuring that the activated sludge can fully contact with the sewage, increasing the reaction area of the activated sludge and improving the sewage treatment efficiency.

As shown in fig. 4 and 6, the present invention is provided with a first aeration pipe 5 and a second aeration pipe 6 which are parallel to each other, and two raising mechanisms 4 respectively slide on the first aeration pipe 5 and the second aeration pipe 6 during operation. When the sewage treatment device starts to work, blown air enters from the first communication pipe 7, flows to the second aeration pipeline 6 through the first aeration pipeline 5, and continuously enters sewage in the flowing process. When the lifting mechanism 4 slides to the end parts of the first aeration pipeline 5 and the second aeration pipeline 6, the reversing mechanism 9 starts to work, so that blown air enters from the first communication pipe 7 and flows to the first aeration pipeline 5 through the second aeration pipeline 6, and the air continuously enters the sewage in the flowing process. The lifting mechanism 4 is driven by blown air to reset and slide until sliding to the end parts of the first aeration pipeline 5 and the second aeration pipeline 6, and the reversing mechanism 9 reverses again and reciprocates circularly. The invention can change the direction of the blown air through the reversing mechanism 9, so that the lifting mechanism 4 can reciprocate under the driving of the blown air under the condition that the aeration fan 2 continuously blows air, and can repeatedly lift the activated sludge accumulated at the bottom of the aeration tank body 1, thereby avoiding the sinking of suspended matters, improving the contact area of the activated sludge and sewage and improving the sewage treatment efficiency.

As shown in fig. 4, 5 and 12, in the present invention, when the aeration tank is operated, the blown air drives the driving plate 11 to slide in the first aeration pipe 5 and the second aeration pipe 6, the driving plate 11 is a permanent magnet, and the upper end of the sliding scraper 10 is a magnetic part 12, so that the driving plate 11 drives the sliding scraper 10 to slide on the outer surfaces of the first aeration pipe 5 and the second aeration pipe 6, and the lower end scraping part 13 of the sliding scraper 10 lifts the activated sludge accumulated on the bottom of the aeration tank body 1 during the sliding process. According to the invention, the air blown by the aeration fan 2 is used for driving the sliding scraper 10 to slide, no additional power source is needed, and the driving plate 11 is hollow, so that the air can be scattered, the air enters the sewage in a small gas ball mode, the gas is fully contacted with the sewage, and the improvement of dissolved oxygen in the sewage is facilitated.

As shown in fig. 6 to 8 and 11, when the sliding scraper 10 slides under the driving of blown air in the operation of the present invention, as shown in fig. 7, when the sliding scraper 10 slides to the end of the first aeration pipe 5, the sliding scraper 10 drives the first rack 24 to move, and since the first rack 24 is engaged with the first gear 22 and the first gear 22 is fixedly installed on the first rotating shaft 20, the first rotating shaft 20 is driven to rotate by the sliding of the driver rack, so that the first synchronizing wheel 17 fixedly installed on the first rotating shaft 20 rotates. As shown in fig. 11, the first synchronous wheel 17 rotates, and the third synchronous wheel 16 also rotates through the transmission of the synchronous belt 19, so that the reversing fan column 14 coaxially installed with the third synchronous wheel 16 also rotates 180 °, and at this time, the air blown by the original aeration fan 2 is blown to the second aeration pipe 6 and is also reversed and not blown to the first aeration pipe 5, so as to realize the reversing. The same is true when the second rack 25 slides. The invention can realize mechanical automatic reversing by driving the reversing fan column 14 by blown air, and has simple and stable structure. The rack is driven to rotate by the movement of the sliding scraper 10, the reversing fan column 14 is driven to rotate after the sliding scraper 10 moves for a stroke, the problem that the sewage treatment effect is influenced due to the incomplete lifting route of the sliding scraper 10 is solved, the reversing mechanism 9 adopts a mechanical structure, no additional power source is needed for reversing, and the structure is simple and stable.

As shown in fig. 3 and 12, the air blown by the aeration fan 2 passes through the main aeration pipe 3 and enters the auxiliary aeration pipe 26. The air enters into and assists aeration pipe 26 and gets into in the sewage through the fan-shaped aerator 28 of its top, the air can drive the rotation flabellum 30 rotation at fourth axis of rotation 27 middle part after entering and assist aeration pipe 26, rotation flabellum 30 drives fourth axis of rotation 27 and rotates, fix like this fan-shaped aerator 28 on the fourth rotation post and rotate scraper blade 29 and also can rotate, the rotation of fan-shaped aerator 28 can make and throw away with the route of parabola through this combustion gas, the area of contact of air with sewage has been increased, the treatment effeciency of sewage has been improved. The rotation of the rotating scraper 29 causes the accumulated activated sludge located therebelow to be raised and suspended in the sewage, preventing the suspended matter in the sewage from sinking. The contact area of the sewage and the oxygen is increased, the dissolution of the sewage is facilitated, the activated sludge can be fully contacted with the sewage, the reaction area of the activated sludge is increased, and the sewage treatment efficiency is improved. As shown in fig. 12, in the present invention, when the sliding scraper 10 moves along the main aeration pipe 3, when the sliding scraper 10 moves to the connection position of the auxiliary aeration pipe 26 on the main aeration pipe 3, the helical rack 32 is engaged with the helical gear 31 to drive the helical gear 31 to rotate, so that the auxiliary aeration pipe 26 also rotates, the gas discharged from the fan-shaped aerator 28 can wash the area between two adjacent auxiliary aeration pipes 26 where the sludge still accumulates, so that the gas can suspend or move to the lower part of the auxiliary aeration pipe 26, which is convenient for the next lifting of the rotating scraper 29, and the auxiliary aeration pipe 26 also increases the area through which the gas discharged from the fan-shaped aerator 28 flows, increases the contact area between the gas and the sewage, facilitates the dissolution of oxygen, and improves the sewage treatment efficiency.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides an aeration basin system for sewage treatment which characterized in that: the aeration device comprises a tank body (1), an aeration fan (2) and aeration equipment, wherein the aeration equipment comprises a main aeration pipeline (3) paved at the bottom of the tank body (1) and a lifting mechanism (4) sliding along the extension direction of the main aeration pipeline, and the lifting mechanism (4) is used for lifting activated sludge at the bottom of the tank body (1); the main aeration pipeline (3) comprises a first aeration pipeline (5) and a second aeration pipeline (6) which are parallel to each other, the two ends of the first aeration pipeline (5) and the second aeration pipeline (6) are communicated through a first communicating pipe (7) and a second communicating pipe (8) respectively, the first communicating pipe (7) is communicated with the aeration fan (2) through a reversing mechanism (9), and the reversing mechanism (9) is used for controlling air blown out by the aeration fan (2) to blow to the first aeration pipeline (5) or the second aeration pipeline (6).

2. An aeration basin system for wastewater treatment according to claim 1, wherein: the lifting mechanism (4) comprises sliding scrapers (10) which are respectively slidably mounted at the bottoms of the outer surfaces of the first aeration pipeline (5) and the second aeration pipeline (6) and driving plates (11) which are respectively slidably mounted in the first aeration pipeline (5) and the second aeration pipeline (6), the upper end of each sliding scraper (10) is provided with a magnetic part (12), and the lower end of each sliding scraper is provided with a scraping part (13); the drive plate (11) is made of a permanent magnet and is hollow.

3. An aeration basin system for wastewater treatment according to claim 2, wherein: the reversing mechanism (9) comprises a reversing fan column (14) rotatably mounted at a communication position of a first communicating pipe (7) and the aeration fan (2), the reversing fan column (14) is fixedly mounted on a third rotating shaft (15), a third synchronizing wheel (16) is further fixedly mounted on the third rotating shaft (15), a first synchronizing wheel (17) and a second synchronizing wheel (18) are respectively arranged at a connecting position of the first communicating pipe (7) and the first aeration pipeline (5) and a connecting position of the first communicating pipe (7) and the second aeration pipeline (6), the first synchronizing wheel (17), the second synchronizing wheel (18) and the third synchronizing wheel (16) are connected through a synchronizing belt (19), the first synchronizing wheel (17) and the second synchronizing wheel (18) are respectively and fixedly mounted on a first rotating shaft (20) and a second rotating shaft (21), and the first rotating shaft (20), A first gear (22) and a second gear (23) are fixedly mounted on the second rotating shaft (21) respectively, the first gear (22) and the second gear (23) are meshed with a first rack (24) and a second rack (25) respectively, the first rack (24) and the second rack (25) are slidably mounted at the bottoms of the outer surfaces of the first aeration pipeline (5) and the second aeration pipeline (6) respectively, and the sliding direction is the same as that of the lifting mechanism (4).

4. A sewage treatment aeration basin system according to claim 3, wherein: aeration equipment is still including rotating auxiliary aeration pipeline (26) of installing in main aeration pipeline (3) both sides, auxiliary aeration pipeline (26) internal rotation is installed fourth axis of rotation (27), the upper end of fourth axis of rotation (27) extends to auxiliary aeration pipeline (26) outer and fixed mounting has fan-shaped aerator (28), and the lower extreme extends to auxiliary aeration pipeline (26) outer and fixed mounting has rotation scraper blade (29), and middle-end fixed mounting has rotation flabellum (30), the exhaust hole of fan-shaped aerator (28) is arranged along the fan-shaped edge interval of fan-shaped aerator (28), the directional sectorial centre of a circle.

5. An aeration basin system for wastewater treatment according to claim 4, wherein: one end of the auxiliary aeration pipeline (26) close to the main aeration pipeline (3) is fixedly provided with a helical gear (31), two sides of the sliding scraper (10) are fixedly provided with helical gear racks (32), and the helical gear (31) can be meshed with the helical gear racks (32).

6. An aeration basin system for wastewater treatment according to claim 5, wherein: the main aeration pipeline (3) is a square pipeline.

7. An aeration tank working method for sewage treatment is applicable to the aeration tank system of claims 1-6, and mainly comprises the following steps:

s1: discharging sewage into the tank body (1), and starting the aeration fan (2);

s2: outside air enters the main aeration pipeline (3) and the auxiliary aeration pipeline (26) through the reversing mechanism (9), the lifting mechanism (4) starts to work, and activated sludge accumulated at the bottom of the tank body (1) is lifted;