Energy-saving carbon-reducing aeration device for domestic sewage treatment

Abstract

The utility model discloses an energy-saving and carbon-reducing aeration device for domestic sewage treatment, and belongs to the technical field of wastewater treatment. Comprising a bottom-layer aerator and an upper-layer aerator, the upper-layer aerator is connected with a movable driving mechanism; the movable driving mechanism comprises a movable lifting device, a truss track, a chain transmission shaft and a chain; the joist barrow rails are arranged on two sides of the top of the biochemical treatment pond; the upper-layer aerator is driven by the movable lifting device to vertically move up and down and horizontally and transversely move; dissolved oxygen concentration sensors are uniformly distributed on the inner wall of the biochemical treatment tank along the height direction; the dissolved oxygen concentration sensors, the driving motor and the movable lifting device are connected with a PLC (Programmable Logic Controller); according to the utility model, the oxygen transfer efficiency in the biochemical treatment pool of the domestic sewage treatment plant is effectively improved, the aim of accurate aeration control can be achieved, favorable conditions are provided for degradation of pollutants, meanwhile, the energy consumption required by aeration can be reduced, and the aims of saving energy and reducing carbon are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology and relates to an aeration device, specifically an energy-saving and carbon-reducing aeration device for domestic sewage treatment. Background Technology

[0002] In recent years, wastewater discharge has increased year by year, and the demand for wastewater treatment has grown daily. However, wastewater treatment is still in a stage of "high energy consumption for water quality," and the electricity consumption per unit of wastewater treated is high. Both in terms of total volume and unit electricity consumption, my country's wastewater treatment plants face the task of energy conservation and carbon reduction. Biological treatment is the most widely used wastewater treatment method in wastewater treatment plants. Among the various treatment units in a wastewater treatment plant, the biochemical treatment unit has the highest energy consumption, and the aeration system is the most energy-intensive part of this unit. Traditional aeration systems not only have low oxygen transfer efficiency but also high electricity consumption, making them difficult to adapt to the needs of modern wastewater treatment development.

[0003] Patent CN110436617A discloses a liftable aeration tank. A fixed aeration pipe is installed at the bottom of the tank, and several grooves are evenly distributed on the inner surface of the tank. A lifting rod is movably installed within these grooves, and the bottom of each lifting rod is connected to a lifting aeration frame. A lifting aeration pipe is installed on the upper surface of the lifting aeration frame, with one side of the lifting aeration pipe connected to one end of an aeration hose. This design allows for simultaneous aeration of the bottom and upper layers of the aeration tank, significantly improving the aeration effect and efficiency. However, this lifting aeration device cannot be adjusted according to actual needs, and it still suffers from relatively high energy consumption.

[0004] Patent CN212982594U discloses a lifting aeration device for domestic sewage treatment. A telescopic guide rod is fixedly connected to the lower surface of the aeration disc, and the lower end of the telescopic guide rod is fixedly connected to the bottom of the tank. A blower is fixedly connected to the side wall of the fixing frame, and an air guide pipe is installed at the blower's exhaust port. A lead screw passes through the fixing frame, and worm gears are provided on both sides of the lead screw. The blower aerates the sewage, and a motor drives the lead screw to rotate forward and backward, thereby moving the aeration disc up and down, disturbing the bottom sewage and allowing bubbles to be more evenly distributed into the sewage, thus improving aeration efficiency. However, this technology cannot solve the problem of how to control the lifting aeration pipe to reduce energy consumption. Utility Model Content

[0005] This utility model overcomes the shortcomings of existing technologies and proposes an energy-saving and carbon-reducing aeration device for domestic sewage treatment, solving the problem of high energy consumption in aeration devices. This utility model is achieved through the following technical solution:

[0006] The utility model relates to an energy -conserving and carbon -reducing aeration device for domestic sewage treatment, including bottom aeration device and upper layer aerator, bottom aeration device is laid in the bottom of biochemical treatment pond, upper layer aerator is connected with mobile drive mechanism, mobile drive mechanism includes movable lifting device, girder car track, chain transmission shaft and chain, girder car track is arranged in the both sides of the top of biochemical treatment pond, be provided with drive motor on girder car track, drive motor is connected with movable lifting device, two movable lifting device bottom sliding connection is in girder car track, movable lifting device is connected with chain, and upper layer aerator both ends are connected with chain transmission shaft, and chain is connected with chain transmission shaft, and the biochemical treatment pond inner wall is along the height direction and is evenly distributed with dissolved oxygen concentration sensor, and dissolved oxygen concentration sensor, drive motor and movable lifting device are connected with PLC controller.

[0007] Further, the bottom aeration device includes a pond bottom aeration pipe, a pond bottom aeration head and a large aeration fan; the pond bottom aeration pipe is laid on the bottom of the biochemical treatment pond, and the pond bottom aeration pipe is uniformly connected with a plurality of pond bottom aeration heads; a plurality of pond bottom aeration pipes are gathered and connected with the large aeration fan.

[0008] Further, the upper layer aerator includes a small aeration fan, an aeration hose and a precision aeration head; a plurality of the aeration hoses are connected with each other, and a plurality of precision aeration heads are uniformly connected with the aeration hose; a plurality of aeration hoses are gathered and connected with the small aeration fan.

[0009] Further, a plurality of the aeration hoses are arranged in parallel.

[0010] Further, the small aeration fan is slidingly connected on the ground on the top of the biochemical treatment pond.

[0011] Further, the small aeration fan is fixedly connected on the ground on the top of the biochemical treatment pond, and the small aeration fan is connected with the aeration hose through an elongated hose pipeline.

[0012] The utility model has the advantages that:

[0013] The utility model discloses on one hand can efficiently to the biochemical treatment stage aerobic tank into air. Considering that the dissolved oxygen concentration is different in different depths and different positions in the aerobic tank, on the basis of the original aeration at the bottom of the aerobic tank, a set of lifting device that can move horizontally and vertically is additionally arranged, and the aeration device is arranged on the lifting device, and the position of the upper aeration device can be adjusted in time according to the oxygen concentration sensor feedback data in the tank, the gas stirring of water body is enhanced, the gas and water are fully mixed, and the oxygen transfer efficiency is improved. In addition, the device adopts the independent air supply of partial pressure and the layered aeration mode, the upper aeration device can move up and down through the chain lifting device and move horizontally through the gantry track arranged on the top of the tank, the aeration height is adjusted according to the need, the uniformity of overall aeration is strengthened, the aeration efficiency is improved, so that the different aeration intensity requirements in the biochemical treatment tank are met, and the lower aeration device can reduce the air blowing intensity, thereby reducing the aeration partial pressure of the air blower aeration, reducing the waste of air pressure of the upper sewage, and achieving the purpose of energy saving and carbon reduction. Under the action of oxygen, the microorganism in the tank utilizes the metabolic effect to realize more efficient degradation and removal of pollutants in the sewage.

[0014] The utility model effectively improves the oxygen transfer efficiency in the biochemical treatment tank of the domestic sewage treatment plant, can achieve the goal of precise aeration control, provides favorable conditions for the degradation of pollutants, can reduce the energy consumption required during aeration, and achieves the purpose of energy saving and carbon reduction. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is the side view structure schematic diagram of the utility model whole;

[0016] Fig. 2 It is the overhead structure schematic diagram of the utility model whole;

[0017] Fig. 3 It is the structure schematic diagram of the movable lifting device and small aeration fan of the utility model.

[0018] In the above figure:

[0019] 1, small aeration fan;2, aeration hose;3, movable lifting device;4, gantry track;5, chain transmission shaft;6, precise aeration head;7, tank bottom aeration head;8, large aeration fan;9, movable aeration pipe;10, tank bottom aeration pipe;11, chain;12, dissolved oxygen concentration sensor. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model clearer and more apparent, the utility model is further described in detail in combination with embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model and not used to limit the utility model. The technical scheme of the utility model is described in detail below in combination with embodiments and drawings, but the protection scope is not limited thereby.

[0021] Referring to Figs. 1 to 3 The embodiment provides an energy-saving and carbon-reducing aeration device for domestic sewage treatment, which comprises a small aeration fan 1, an aeration hose 2, a movable lifting device 3 (with a matched motor), a derrick track 4, a chain transmission shaft 5, a precise aeration head 6, a pool bottom aeration head 7, a large aeration fan 8, a pool bottom aeration pipe 10, a chain 11 and a dissolved oxygen concentration sensor 12.

[0022] Two layers of aeration devices are arranged in the biochemical treatment tank, and are arranged in the tank in a shallow layer and a deep layer. The bottom layer aeration device comprises the pool bottom aeration pipe 10, the pool bottom aeration head 7 and the large aeration fan 8; the pool bottom aeration pipe 10 is arranged on the bottom of the biochemical treatment tank, the pool bottom aeration pipe 10 is connected with a plurality of pool bottom aeration heads 7 uniformly, and a plurality of pool bottom aeration pipes 10 are connected with the large aeration fan 8 after being converged.

[0023] The upper layer aeration device comprises the small aeration fan 1, the aeration hose 2 and the precise aeration head 6; three aeration hoses 2 are communicated with each other and arranged in parallel, a plurality of precise aeration heads 6 are connected to the aeration hose 2 uniformly, the three aeration hoses 2 are connected with the small aeration fan 1 after being converged, and the upper layer aeration device is connected with the moving driving mechanism and can move vertically and horizontally.

[0024] The moving driving mechanism comprises the movable lifting device 3, the derrick track 4, the chain transmission shaft 5 and the chain 11; the derrick track 4 is arranged on both sides of the top of the biochemical treatment tank; the bottom of the two movable lifting devices 3 is slidably connected to the derrick track 4; the movable lifting device 3 is connected with the chain 11, the outer ends of the aeration hose 2 are respectively connected with the chain transmission shaft 5, and the chain 11 is connected with the chain transmission shaft 5. The aeration hose 2 is lifted or lowered by the lifting chain 11 under the action of the movable lifting device 3; the derrick track 4 is provided with a driving motor, the driving motor is connected with the movable lifting device 3, and the movable lifting device 3 moves horizontally along the derrick track 4 under the action of the driving motor, so that the aeration hose 2 can move horizontally; when the aeration hose 2 moves horizontally, the small aeration fan 1 is slidably connected to the ground on the top of the biochemical treatment tank and can move with the aeration hose 2, or the small aeration fan 1 can be fixed and connected by a lengthened pipeline.

[0025] The dissolved oxygen concentration sensor 12 is uniformly distributed along the height direction of the inner wall of the biochemical treatment tank, so that the dissolved oxygen concentration at each position in the tank can be monitored in real time, and the height and horizontal position of the aeration hose in the tank are adjusted by the PLC controller.

[0026] The movable lifting device 3 used in the embodiment is an existing device, which plays the role of a hoist.

[0027] The working principle of the energy-saving and carbon-reducing aeration device for domestic sewage treatment is as follows:

[0028] The upper aeration device is installed on the movable lifting device 3 (with a matching motor), and the upper and lower aeration devices are supplied with air by blowers with different air volume and air pressure. The movable lifting aeration device located at the upper layer can move horizontally through the derrick track 4 and adjust vertically through the lifting device 3 according to the feedback data of the oxygen concentration sensors at different positions in the tank, so as to achieve the effect of real-time adjustment of the position of the aeration device and precise aeration control. Since the upper aeration device plays the role of oxygenation for the upper sewage, the power of the lower aeration blower can be significantly reduced to reduce the operating power consumption.

[0029] The sewage treated by the preceding sewage treatment process enters the biochemical treatment tank through the sewage inlet pipe. The air pressure generated by the small aeration blower 1 is transmitted to the biochemical tank through the aeration hose 2. According to the feedback data of the dissolved oxygen concentration sensor 12, the upper movable lifting device 3 can move horizontally through the derrick track 4 and vertically through the lifting device 3 to control the chain 11 to adjust the upper aeration device, and then the oxygen is dispersed to different positions in the tank by the precise aeration head 6, so as to achieve the effect of real-time adjustment of the position of the aeration device and precise aeration control.

[0030] The large aeration blower 8 can generate air pressure through the aeration pipe laid on the bottom of the tank, and the bottom aeration head 7 uniformly arranged on the aeration pipe can disperse oxygen into the tank. The microorganisms in the tank utilize metabolic action to degrade and remove the pollutants in the sewage. This device can not only meet the oxygen demand of the microorganisms in the biochemical treatment tank, but also save the power consumption caused by excessive aeration due to uneven aeration.

[0031] The treated water enters the subsequent treatment process through the sewage outlet pipe.

[0032] The above is a further detailed description of the present application in combination with a specific preferred embodiment, which cannot be regarded as limiting the specific embodiments of the present application to this. For ordinary skilled persons in the technical field to which the present application belongs, some simple deductions or substitutions can be made without departing from the present application, which should be regarded as falling within the scope of the patent protection range determined by the claims submitted.

Claims

1. An energy-saving and carbon-reducing aeration device for domestic sewage treatment, comprising a bottom aeration device and an upper aeration device; the bottom aeration device is laid on the bottom of a biochemical treatment tank; characterized in that, The upper aerator is connected with a moving driving mechanism; the moving driving mechanism comprises movable lifting devices (3), a derrick track (4), a chain transmission shaft (5) and a chain (11); the derrick track (4) is arranged on both sides of the top of the biochemical treatment tank; a driving motor is arranged on the derrick track (4) and is connected with the movable lifting devices (3); the two movable lifting devices (3) are slidably connected at the bottom of the derrick track (4); the movable lifting devices (3) are connected with the chain (11), the upper aerator is respectively connected with the chain transmission shaft (5) at both ends, the chain (11) is connected with the chain transmission shaft (5); the dissolved oxygen concentration sensors (12) are evenly distributed along the height direction on the inner wall of the biochemical treatment tank, the dissolved oxygen concentration sensors (12), the driving motor and the movable lifting devices (3) are connected with a PLC controller.

2. The energy-saving and carbon-reducing aeration device for domestic sewage treatment according to claim 1, characterized in that, The bottom aerator comprises a tank bottom aeration pipe (10), a tank bottom aeration head (7) and a large aeration fan (8); the tank bottom aeration pipe (10) is laid on the bottom of the biochemical treatment tank, the tank bottom aeration pipe (10) is uniformly connected with a plurality of tank bottom aeration heads (7), and a plurality of tank bottom aeration pipes (10) are connected with the large aeration fan (8) after being converged.

3. The energy-saving and carbon-reducing aeration device for domestic sewage treatment according to claim 1, characterized in that, The upper aerator comprises a small aeration fan (1), an aeration hose (2) and a precise aeration head (6); a plurality of the aeration hoses (2) are communicated with each other, the aeration hose (2) is uniformly connected with a plurality of precise aeration heads (6), and a plurality of aeration hoses (2) are connected with the small aeration fan (1) after being converged.

4. The energy-saving and carbon-reducing aeration device for domestic sewage treatment according to claim 3, characterized in that, A plurality of the aeration hoses (2) are arranged in parallel.

5. The energy-saving and carbon-reducing aeration device for domestic sewage treatment according to claim 3, characterized in that, The small aeration fan (1) is slidably connected on the ground at the top of the biochemical treatment tank.

6. The energy-saving and carbon-reducing aeration device for domestic sewage treatment according to claim 3, characterized in that, The small aeration fan (1) is fixedly connected on the ground at the top of the biochemical treatment tank, and the small aeration fan (1) is connected with the aeration hose (2) through an elongated hose pipeline.

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