An aeration device for activated sludge sewage treatment

Abstract

The invention relates to the technical field of sewage treatment, and in particular to an aeration device for activated sludge sewage treatment, comprising an aeration tank, an aeration pipe group is arranged inside the aeration tank, and a pedestrian bridge is arranged at the top of the aeration tank for workers to walk and operate conveniently, and a movable delivery mechanism is respectively arranged on both sides of the pedestrian bridge, and the delivery mechanism comprises a medicine storage box for storing medicine, and an inclined partition is arranged in the cavity of the medicine storage box, and four discharge ports are opened at the bottom of the partition, and a first connecting pipe is respectively arranged at the bottom end of the four discharge ports, and the bottom end of each first connecting pipe is fixedly connected to a second connecting pipe, and one end of each second connecting pipe extends to the outside of the medicine storage box and is connected to a spray hood. When the sewage in the tank expands, the monitoring system can quickly and automatically identify it and control the mobile mechanism through the terminal controller to drive the delivery mechanism to deliver the medicine in time, and the process does not require manual real-time monitoring, which has the effects of saving manpower and efficient delivery.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to an aeration device for activated sludge sewage treatment. Background Art

[0002] The activated sludge process is an aerobic biological treatment process for sewage. It can remove soluble and colloidal biodegradable organic matter, as well as suspended solids and other substances that can be adsorbed by activated sludge from sewage. It can also remove a portion of phosphorus and nitrogen. The aeration tank is an important bioreactor for treating sewage using the activated sludge process. Sewage is aerated in the aeration tank to stir the mixed liquid so that the activated sludge and water are in full contact and to supply oxygen to the microorganisms. The biological coagulation, adsorption and oxidation of the activated sludge are used to decompose and remove organic pollutants in the sewage, thereby achieving the effect of secondary sewage treatment.

[0003] During the aeration process, sludge swelling often occurs in the pool, and usually flocculants are used to assist sedimentation and bactericides are used to treat it. The flocculant-assisted sedimentation method is to add flocculants into the aeration tank to enhance the coagulation properties of the activated sludge, making it easier to separate mud and water; the bactericide method refers to adding chemical agents into the aeration tank where swelling occurs to kill or inhibit the reproduction of filamentous bacteria, thereby achieving the purpose of controlling the swelling of filamentous bacteria sludge. However, the two methods of eliminating aeration tank swelling are generally done manually. During aeration, workers are not only required to observe the reaction in the pool at all times, but also to accurately and quickly add flocculants or other agents according to the swelling position in the pool. Aeration tanks are usually large in size, and the method of workers adding agents alone is prone to the disadvantages of untimely addition, slow addition process, and high physical exertion of workers. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides an aeration device for activated sludge sewage treatment, which solves the problems of untimely addition, slow addition process and high physical exertion of workers when eliminating the expansion phenomenon in the pool by relying solely on workers to add chemicals.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an aeration device for activated sludge sewage treatment, comprising an aeration tank, an aeration pipe group is arranged inside the aeration tank, and a pedestrian bridge is arranged at the top of the aeration tank for workers to walk and work, and a movable delivery mechanism is respectively arranged on both sides of the pedestrian bridge, and the delivery mechanism comprises a medicine storage box for storing medicines, an inclined partition is arranged in the cavity of the medicine storage box, and four discharge ports are opened at the bottom of the partition, and a first pipe is respectively arranged at the bottom end of the four discharge ports, and a second pipe is fixedly connected to the bottom end of each first pipe, and one end of each second pipe extends to the outside of the medicine storage box and is connected to a spray hood, and the openings of the four spray hoods are respectively oriented to the front, rear, left and right directions;

[0008] The four first pipes are each provided with a spiral member for controlling material discharge, and a gear is fixedly connected to the top of the spiral member. Any gear is connected to a servo motor to control its rotation, so as to control material discharge;

[0009] The inner wall of the aeration tank is also provided with a monitoring system for real-time monitoring of the horizontal plane height status, the monitoring system includes a terminal controller, a laser transmitter, a reflector group and a light sensor, the terminal controller, the reflector group and the light sensor are installed on the inner wall on the same side of the aeration tank, the laser transmitter is installed on the inner wall on the side of the aeration tank opposite to the reflector group, the light beam of the laser transmitter is irradiated into the reflector group, the reflector group guides the reflected light to the light sensor, the light sensor is electrically connected to the input end of the terminal controller, and the output end of the terminal controller is electrically connected to the servo motor for controlling material unloading.

[0010] Preferably, the bottom end of the medicine storage box is lower than the bottom plane of the footbridge and higher than the sewage level. The delivery mechanism also includes a ventilation pipe group arranged on one side of the medicine storage box and an air pump installed on the footbridge, and gas is pumped into the ventilation pipe group through the air pump.

[0011] Preferably, the ventilation pipe group includes a main pipe located outside the medicine storage box, four branch pipes connected to the main pipe and passing through the side of the medicine storage box, the four branch pipes are respectively interconnected with four second connecting pipes, the main pipe is interconnected with the output end of the air pump, and the output end of the terminal controller is also electrically connected to the air pump.

[0012] Preferably, a sealing cover is provided at the top of the medicine storage box, and a storage cavity is formed between the inner wall of the medicine storage box, the sealing cover and the partition, and the medicine is stored in the storage cavity.

[0013] Preferably, a slide groove is provided on one side of the footbridge and extends to the other side thereof. A moving mechanism is also provided on one side of the footbridge, and the moving mechanism includes an electric cylinder and two slide rods.

[0014] Preferably, the electric cylinder is installed on the footbridge, and the output rod of the electric cylinder is connected to the outer surface of the medicine storage box through a connecting piece, and the two sliding rods are slidably connected inside the sliding groove.

[0015] Preferably, both ends of each slide slot are provided with mounting blocks, the mounting blocks are connected to the medicine storage box by bolts, and the output end of the terminal controller is also electrically connected to the electric cylinder.

[0016] Preferably, the first connecting pipe is fixedly connected to the bottom end of the discharge port and is connected to the interior of the medicine storage box through the discharge port. The first connecting pipe is vertical, and the second connecting pipe located inside the medicine storage box is horizontal and arranged perpendicular to the first connecting pipe. The first connecting pipe, the second connecting pipe and the interior of the spray hood are interconnected.

[0017] Preferably, the air pumps and servo motors in the two delivery mechanisms on both sides of the footbridge operate independently and are electrically connected to the same terminal controller. An agitator is installed in the middle of the bottom end of the footbridge for stirring and mixing sewage, sludge and chemicals in the pool.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides an aeration device for activated sludge sewage treatment, which has the following beneficial effects:

[0020] By setting up a monitoring system in the aeration tank, when the sewage in the tank expands, the monitoring system can quickly and automatically identify it and control the mobile mechanism through the terminal controller to drive the delivery mechanism to deliver the agent in time. This process does not require manual real-time monitoring, which has the effect of saving manpower and efficient delivery, and further ensures the standardization of sewage treatment;

[0021] By placing the dispensing ports of the four spraying covers of the dispensing mechanism toward the front, rear, left and right directions respectively, the medicine can be spread in four directions when it is dispensed to each expansion point, thereby improving the comprehensive coverage and uniformity of the expansion points by spraying the medicine;

[0022] The amount of reagents required to be added is controlled by controlling the number of revolutions of the spiral and the gear, which has the effect of precise measurement and avoids the effect of sewage treatment affected by too much or too little reagent addition. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 The aeration tank group for sewage treatment of the present invention;

[0025] Figure 2 This is a schematic diagram of the split structure of the delivery mechanism of the present invention;

[0026] Figure 3 This is a schematic diagram of the separate structure of the footbridge and the launching mechanism of the present invention;

[0027] Figure 4 This is a schematic diagram of the connection between the delivery mechanism and the moving mechanism of the present invention;

[0028] Figure 5 This is a structural diagram of a single aeration tank of the present invention;

[0029] Figure 6 A top view of a single aeration tank of the present invention;

[0030] Figure 7 It is a schematic diagram of the internal and external structure of the medicine storage box of the delivery mechanism of the present invention;

[0031] Figure 8 It is a partial structural cutaway view of the medicine storage box of the delivery mechanism of the present invention.

[0032] Description of reference numerals:

[0033] 1. Aeration tank; 11. Aeration pipe group; 2. Footbridge; 21. Chute; 22. Slide rod; 221. Mounting block; 3. Medicine storage box; 31. Partition; 311. Feeding port; 312. First connecting pipe; 313. Second connecting pipe; 314. Spray hood; 32. Ventilation pipe group; 33. Sealing cover; 4. Screw; 41. Gear; 5. Agitator. DETAILED DESCRIPTION

[0034] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0035] Embodiment 1, as Figure 1-Figure 8As shown, in order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an aeration device for treating activated sludge sewage, comprising an aeration tank 1, an aeration pipe group 11 is arranged inside the aeration tank 1, and a footbridge 2 is arranged at the top of the aeration tank 1 for workers to walk and operate, and a movable delivery mechanism is arranged on both sides of the footbridge 2, and the delivery mechanism comprises a medicine storage box 3 for storing medicines, and an inclined partition 31 is arranged in the cavity of the medicine storage box 3, and four discharge ports 311 are opened at the bottom of the partition 31, and a first pipe 312 is arranged at the bottom end of each of the first pipes 312. A second pipe 313 is fixedly connected to the bottom end of each first pipe 312, and one end of each second pipe 313 extends to the outside of the medicine storage box 3 and is connected to a spray hood 314, and the openings of the four spray hoods 314 are respectively facing the front, rear, left and right directions, and the four spray hoods 314 make the delivery port of the delivery mechanism face four directions, so as to improve the comprehensive coverage and uniformity of the delivery points when delivering the medicines;

[0036] Among them, the four first pipes 312 are each provided with a spiral member 4 for controlling the material discharge, and a gear 41 is fixedly connected to the top of the spiral member 4, and any gear 41 is connected to control its rotation through a servo motor to control the material discharge, wherein the four gears 41 are connected through the same chain, and the effect of synchronous operation of the four gears 41 can be achieved. The amount of the required medicine to be put in is controlled according to the number of revolutions of the spiral member 4 and the gear 41, which has the effect of accurate metering, and avoids the effect of sewage treatment affected by too much or too little medicine being put in;

[0037] Further, the bottom end of the medicine storage box 3 is lower than the bottom plane of the footbridge 2 and higher than the sewage plane, and the delivery mechanism also includes a ventilation pipe group 32 arranged on one side of the medicine storage box 3 and an air pump installed on the footbridge 2, and the ventilation pipe group 32 pumps gas into the air through the air pump, and the ventilation pipe group 32 includes a main pipe located outside the medicine storage box 3, four branch pipes connected to the main pipe and running through the side of the medicine storage box 3, and the four branch pipes are interconnected with the four second pipes 313 respectively, and the main pipe is interconnected with the output end of the air pump;

[0038] Further, the first pipe 312 is fixedly connected to the bottom end of the discharge port 311 and the first pipe 312 is communicated with the inside of the medicine storage box 3 through the discharge port 311. The first pipe 312 is vertical, and the second pipe 313 located inside the medicine storage box 3 is horizontal and arranged perpendicularly to the first pipe 312. The first pipe 312, the second pipe 313 and the spray hood 314 are interconnected. A sealing cover 33 is provided at the top of the medicine storage box 3. A storage cavity is formed between the inner wall of the medicine storage box 3, the sealing cover 33 and the partition 31. The medicine is stored in the storage cavity. A stirrer 5 is installed at the middle position of the bottom end of the footbridge 2 for stirring and mixing sewage, sludge and medicine in the pool;

[0039] Embodiment 2, as Figure 3-5 As shown, a slide groove 21 is provided on one side of the footbridge 2 and extends to the other side thereof. A moving mechanism is also provided on one side of the footbridge 2. The moving mechanism includes an electric cylinder and two slide bars 22. The electric cylinder can be installed in a protective box to ensure its waterproof and moisture-proof safety.

[0040] Furthermore, the electric cylinder is installed on the footbridge 2, and the output rod of the electric cylinder is connected to the outer surface of the medicine storage box 3 through a connecting piece, and the two slide bars 22 are slidably connected inside the slide slot 21. Both ends of each slide slot 21 are provided with mounting blocks 221, and the mounting blocks 221 are connected to the medicine storage box 3 through bolts. The medicine storage box 3 is driven by the electric cylinder to move, wherein the medicine storage box 3 drives the slide bar 22 to slide horizontally along the inside of the slide slot 21, thereby driving the delivery mechanism to move through the moving mechanism, so as to quickly move to the area near the expansion point, and achieve the effect of timely delivery and eliminating expansion;

[0041] In the third embodiment, the inner wall of the aeration tank 1 is also provided with a monitoring system for real-time monitoring of the state of the horizontal plane height. The monitoring system includes a terminal controller, a laser transmitter, a reflector group and a light sensor. The terminal controller, the reflector group and the light sensor are installed on the inner wall on the same side of the aeration tank 1. The laser transmitter is installed on the inner wall of the aeration tank 1 on the side opposite to the reflector group. The light beam of the laser transmitter is irradiated into the reflector group. The reflector group guides the reflected light to the light sensor. The light sensor is electrically connected to the input end of the terminal controller. The output end of the terminal controller is electrically connected to the servo motor for controlling the unloading. When in use, the laser transmitter and the reflector group are installed at the same height. The two can be installed in the aeration tank 1 through a lifting mechanism, and the height of the two can be adjusted by the actual sewage water level, so as to reduce the monitoring error of the monitoring system.

[0042] Furthermore, the output end of the terminal controller is also electrically connected to the air pump, and the switch of the air pump is controlled by the terminal controller;

[0043] Furthermore, the output end of the terminal controller is also electrically connected to the electric cylinder, and the switch of the electric cylinder is controlled by the terminal controller;

[0044] Furthermore, the air pumps and servo motors in the two delivery mechanisms on both sides of the pedestrian bridge 2 operate independently and are electrically connected to the same terminal controller. Since the two delivery mechanisms on both sides of the pedestrian bridge 2 are controlled to move by a moving mechanism, two independently controlled air pumps are used to drive the delivery of medicines on both sides, thereby achieving selective delivery of medicines according to expansion requirements and avoiding the phenomenon of over-delivery and waste of medicines.

[0045] When the above embodiment is working, when the sewage is aerated in the aeration tank 1, the expansion state of the sewage level in the aeration tank 1 is monitored in real time by the monitoring system. When the level expands, the horizontal light beam emitted by the laser transmitter is blocked by the expanded sewage. At this time, the light beam received by a reflector group corresponding to the laser transmitter is intermittent or cannot receive the light beam. At this time, the light sensor is also intermittent or cannot receive the light beam from the reflector group. When this phenomenon lasts for a period greater than or equal to the set time, the terminal controller controls the start-up of the delivery mechanism to deliver the agent in time. The set time refers to the confirmation time for the terminal controller to determine whether expansion occurs.

[0046] When releasing the medicine, the terminal controller first controls the electric cylinder of the moving mechanism to start, so that the moving mechanism drives the releasing mechanism to move quickly to the vicinity of the expansion point, and then controls the start of the air pump. At this time, the air pump ventilates the four second connecting pipes 313 through the ventilation pipe group 32, and finally controls the start of the servo motor connected to one of the gears 41. The servo motor drives the four gears 41 to rotate at the same time, and then drives the spiral member 4 to rotate to start feeding. The medicine falls along the first connecting pipe 312 to the second connecting pipe 313, and under the action of the air flow inside the second connecting pipe 313, the medicine is sprayed out along the spray hood 314, so as to achieve the effect of automatic monitoring and releasing the medicine. The openings of the four spray hoods 314 are respectively facing the front, rear, left and right directions. The four spray hoods 314 make the release port of the release mechanism face four directions, so as to improve the comprehensive coverage and uniformity of the release point when releasing the medicine.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aeration device for activated sludge sewage treatment, comprising an aeration tank (1), an aeration pipe group (11) is arranged inside the aeration tank (1), and a footbridge (2) is arranged at the top of the aeration tank (1) for workers to walk and operate conveniently, characterized in that: A movable delivery mechanism is respectively arranged on both sides of the footbridge (2), the delivery mechanism comprising a medicine storage box (3) for storing medicines, an inclined partition (31) is arranged in the cavity of the medicine storage box (3), four material discharge ports (311) are opened at the bottom end of the partition (31), a first pipe (312) is respectively arranged at the bottom end of the four material discharge ports (311), a second pipe (313) is fixedly connected to the bottom end of each first pipe (312), one end of each second pipe (313) extends to the outside of the medicine storage box (3) and is connected to a spray hood (314), and the openings of the four spray hoods (314) face the front, rear, left and right directions respectively; The four first pipes (312) are each provided with a screw (4) for controlling material discharge, the top of the screw (4) being fixedly connected to a gear (41), and any one of the gears (41) is connected to a servo motor to control its rotation, so as to control material discharge; The inner wall of the aeration tank (1) is also provided with a monitoring system for real-time monitoring of the state of the water level height, the monitoring system comprising a terminal controller, a laser transmitter, a reflector group and a light sensor, the terminal controller, the reflector group and the light sensor being mounted on the inner wall on the same side of the aeration tank (1), the laser transmitter being mounted on the inner wall on the side of the aeration tank (1) opposite to the reflector group, the light beam of the laser transmitter irradiating the reflector group, the reflector group guiding the reflected light to the light sensor, the light sensor being electrically connected to the input end of the terminal controller, and the output end of the terminal controller being electrically connected to a servo motor for controlling material unloading; The bottom end of the medicine storage box (3) is lower than the bottom plane of the footbridge (2) and higher than the sewage surface. The delivery mechanism further comprises a ventilation pipe group (32) arranged on one side of the medicine storage box (3) and an air pump installed on the footbridge (2). The ventilation pipe group (32) pumps gas into the air through the air pump. The ventilation pipe group (32) comprises a main pipe located outside the medicine storage box (3), four branch pipes connected to the main pipe and penetrating the side of the medicine storage box (3), the four branch pipes are respectively interconnected with four second connecting pipes (313), and the main pipe is connected to the air pump. The output ends are interconnected, the output end of the terminal controller is also electrically connected to the air pump, the first pipe (312) is fixedly connected to the bottom end of the discharge port (311) and the first pipe (312) is connected to the inside of the medicine storage box (3) through the discharge port (311), the first pipe (312) is vertical, the second pipe (313) located inside the medicine storage box (3) is horizontal and is arranged vertically with the first pipe (312), and the first pipe (312), the second pipe (313) and the spray hood (314) are interconnected.

2. The aeration device for activated sludge sewage treatment according to claim 1, characterized in that: A sealing cover (33) is provided at the top of the medicine storage box (3); a storage cavity is formed between the inner wall of the medicine storage box (3), the sealing cover (33) and the partition (31); and medicines are stored in the storage cavity.

3. The aeration device for activated sludge sewage treatment according to claim 1, characterized in that: A sliding groove (21) is provided on one side of the footbridge (2) and extends to the other side thereof. A moving mechanism is also provided on one side of the footbridge (2), and the moving mechanism comprises an electric cylinder and two sliding rods (22).

4. The aeration device for activated sludge sewage treatment according to claim 3, characterized in that: The electric cylinder is mounted on the footbridge (2), and the output rod of the electric cylinder is connected to the outer surface of the medicine storage box (3) via a connecting piece, and the two sliding rods (22) are both slidably connected inside the sliding groove (21).

5. The aeration device for activated sludge sewage treatment according to claim 4, characterized in that: Both ends of each slide groove (21) are provided with mounting blocks (221), the mounting blocks (221) are connected to the medicine storage box (3) via bolts, and the output end of the terminal controller is also electrically connected to the electric cylinder.

6. The aeration device for activated sludge sewage treatment according to claim 1, characterized in that: The air pumps and servo motors in the two delivery mechanisms located on both sides of the footbridge (2) operate independently and are electrically connected to the same terminal controller. A stirrer (5) is installed at the middle of the bottom end of the footbridge (2) for stirring and mixing sewage, sludge and chemicals in the pool.

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