CN216662604U

CN216662604U - Pulse type air-lift sludge discharge and reflux device in activated sludge method

Info

Publication number: CN216662604U
Application number: CN202220013444.9U
Authority: CN
Inventors: 罗国显; 刘建意
Original assignee: Yunnan Zichi Environmental Protection Technology Co ltd
Current assignee: Yunnan Zichi Environmental Protection Technology Co ltd
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-06-03
Anticipated expiration: 2032-01-05

Abstract

The utility model discloses a pulse type air-lift sludge discharging and refluxing device in an activated sludge method, which relates to the technical field of sewage treatment and comprises a gas-liquid separation box, wherein the bottom of the gas-liquid separation box is communicated with a sludge discharging pipe, the bottom end of the sludge discharging pipe is connected with an extension pipe, the sludge discharging pipe is connected with a sludge suction pipe through the extension pipe, the upper end of the gas-liquid separation box is provided with an exhaust pipe, the bottom end of one side of the gas-liquid separation box is communicated with a reflux pipe, the outer side of the sludge suction pipe is connected with a pulse type gas supply assembly, the bottom end of the sludge suction pipe is connected with a sludge suction horn mouth, the bottom of the sludge suction horn mouth is provided with a support, and the side surface of the sludge suction horn mouth is connected with a continuous type gas supply assembly; this design is compared in traditional sludge pump extraction, and not only simple structure arranges that mud is unblocked, the nothing blocks up moreover, and is more energy-conserving moreover, also can control wantonly to the mud discharge amount, has effectively solved the problem that gravity and sludge pump arrange mud, can long-term steady operation.

Description

Pulse type air-lift sludge discharge and reflux device in activated sludge method

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a pulse type stripping sludge discharge and reflux device in an activated sludge method.

Background

The activated sludge process is a biological treatment process of domestic sewage and industrial sewage which is most widely applied, in the sewage treatment process, backflow and excess sludge discharge are two key technical links, the backflow comprises nitrification liquid internal backflow and sludge external backflow, in the traditional process, in order to realize automatic control and accurate control of the backflow amount and sludge discharge amount, power required by nitrification liquid and sludge backflow and sludge discharge in an aerobic section is completed by a water pump or a sludge pump, but the cost is high, the energy consumption is high, an air stripping device is also adopted for backflow, but the flow of the existing gas device is easily influenced by the size of a sludge outlet pipe, the depth of the sludge outlet pipe inserted into water, the amount of compressed air, the liquid level and the sludge outlet height, and the flow of the conventional air stripping device is difficult to accurately control, so the utility model provides a pulse type steam stripping sludge discharge and backflow device in the activated sludge process.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a pulse type stripping sludge discharge and reflux device in an activated sludge method, which solves the problems in the background technology.

In order to achieve the purpose, the utility model is realized by the following technical scheme: a pulse type stripping mud discharging and refluxing device in an activated sludge method comprises a gas-liquid separation box, wherein the bottom of the gas-liquid separation box is communicated with a mud discharging pipe, the bottom end of the mud discharging pipe is connected with an extension pipe, the mud discharging pipe is connected with a mud suction pipe through the extension pipe, the upper end of the gas-liquid separation box is provided with an exhaust pipe, the bottom end of one side of the gas-liquid separation box is communicated with a reflux pipe, the outer side of the mud suction pipe is connected with a pulse type gas supply assembly, the bottom end of the mud suction pipe is connected with a mud suction horn mouth, the bottom of the mud suction horn mouth is provided with a support, and the side face of the mud suction horn mouth is connected with a continuous type gas supply assembly;

the pulse type gas supply assembly comprises a pulse gas inlet pipe connected with the mud suction pipe and a gas distribution pipe connected with the lengthening pipe, and control valves are arranged on the pulse gas inlet pipe and the gas distribution pipe.

As a further technical scheme, the pulse type gas supply assembly further comprises a gas outlet pipe, one end of the pulse gas inlet pipe extends into the mud suction pipe, one end of the gas distribution pipe extends into the extension pipe, the gas outlet pipe is of an L-shaped structure, and one end of the pulse gas inlet pipe is connected with an intermittent gas supply source.

As a further technical scheme, a connecting pipe is arranged between the pulse air inlet pipe and the air distribution pipe, connecting flanges are arranged at two ends of the connecting pipe and two ends of the lengthened pipe, the air distribution pipe is communicated with the pulse air inlet pipe through the connecting pipe and the connecting flanges, and two ends of the lengthened pipe are respectively communicated with the sludge discharge pipe and the sludge suction pipe through the connecting flanges.

As a further technical scheme, an exhaust valve is arranged on the exhaust pipe, a mud valve is arranged on the return pipe, the top end of the mud pipe extends to the bottom end of the inside of the gas-liquid separation box, a guide plate is arranged on the side face of the inside of the gas-liquid separation box corresponding to the mud pipe, and the guide plate is of an arc-shaped structure.

As a further technical scheme, the continuous air supply assembly comprises a continuous air inlet pipe arranged on one side of the mud suction bell mouth, the lower end of the inside of the mud suction bell mouth is provided with an air ring, and the inner side surface of the air ring penetrates through the inner side wall of the mud suction bell mouth and is provided with a plurality of air outlets.

As a further technical scheme of the utility model, the air outlet is obliquely arranged, one end of the continuous air inlet pipe penetrates through the mud suction bell mouth and is communicated with the air ring, a one-way sheet is arranged at the port of the air outlet, and the other end of the continuous air inlet pipe is connected with a continuous air supply source.

Advantageous effects

The utility model provides a pulse type stripping sludge discharge and reflux device in an activated sludge process. Compared with the prior art, the method has the following beneficial effects:

a pulse type stripping mud discharging and returning device in an activated sludge method can input pulse compressed airflow into a mud suction pipe by matching a pulse air inlet pipe with an intermittent air supply source, so that the pressure in the mud suction pipe is smaller than the atmospheric pressure, sludge in a reaction tank can be pumped into a gas-liquid separation box through the sludge pipe, an extension pipe can be additionally arranged according to requirements and matched with the application of a gas distribution pipe, the stability of pulse airflow in the mud suction pipe and the extension pipe can be ensured, and meanwhile, upward airflow thrust is conveniently formed at the inner side of a mud suction bell mouth by matching of a continuous air supply source and an air ring, so that the sludge can be better pumped into the mud suction pipe. Can stably operate for a long time.

Drawings

FIG. 1 is a schematic structural diagram of a pulse stripping sludge discharge and reflux device in an activated sludge process;

FIG. 2 is a schematic view of the inside structure of a mud suction bell mouth in a pulse stripping mud discharge and reflux device in an activated sludge process;

FIG. 3 is a schematic view of an installation of an air outlet pipe in a pulse stripping sludge discharge and reflux device in an activated sludge process.

In the figure: 1. a gas-liquid separation tank; 11. a return pipe; 12. a mud valve; 13. an exhaust pipe; 14. an exhaust valve; 15. a baffle; 2. a mud suction bell mouth; 21. a wind ring; 22. an air outlet; 3. a mud suction pipe; 4. a connecting flange; 5. lengthening a pipe; 6. a support; 7. continuously feeding air into the pipe; 8. a pulse air inlet pipe; 81. a control valve; 82. a connecting pipe; 83. a gas distributing pipe; 84. an air outlet pipe; 9. a sludge discharge pipe.

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. 1-3, the present invention provides a technical solution of a pulse stripping sludge discharge and reflux device in an activated sludge process: a pulse type stripping sludge discharging and refluxing device in an activated sludge method comprises a gas-liquid separation box 1, wherein the bottom of the gas-liquid separation box 1 is communicated with a sludge discharging pipe 9, the bottom end of the sludge discharging pipe 9 is connected with an extension pipe 5, the sludge discharging pipe 9 is connected with a sludge suction pipe 3 through the extension pipe 5, the upper end of the gas-liquid separation box 1 is provided with an exhaust pipe 13, the bottom end of one side of the gas-liquid separation box 1 is communicated with a reflux pipe 11, the outer side of the sludge suction pipe 3 is connected with a pulse type gas supply assembly, the bottom end of the sludge suction pipe 3 is connected with a sludge suction bell mouth 2, the bottom of the sludge suction bell mouth 2 is provided with a support 6, and the side surface of the sludge suction bell mouth 2 is connected with a continuous type gas supply assembly;

the pulse type gas supply assembly comprises a pulse gas inlet pipe 8 connected with the mud suction pipe 3 and a gas distribution pipe 83 connected with the extension pipe 5, control valves 81 are arranged on the pulse gas inlet pipe 8 and the gas distribution pipe 83, one end of the pulse gas inlet pipe 8 extends into the mud suction pipe 3, one end of the gas distribution pipe 83 extends into the extension pipe 5, the gas outlet pipe 84 is of an L-shaped structure, one end of the pulse gas inlet pipe 8 is connected with an intermittent gas supply source, the intermittent gas supply source supplies gas in an interval mode, pulse type gas supply can be achieved, in the using process, the gas is input into the pulse gas inlet pipe 8 through the intermittent gas supply source, the pulse gas flow is input into the gas outlet pipe 84 through the pulse gas inlet pipe 8, the pulse gas flow is jetted out of the mud suction pipe 3 through the gas outlet pipe 84, the pulse gas flow flows into the gas-liquid separation tank 1, and the gas pressure above sludge in the mud suction pipe 3 is smaller than the atmospheric pressure, mud is extracted in the mud suction pipe 3, and under the effect of pulse air current, the mud in the mud suction pipe 3 is discharged into gas-liquid separation case 1 through mud pipe 9, and the extraction speed of mud in the mud suction pipe 3 can be controlled according to the air input of pulse intake pipe 8, come control reflux volume through control time of admitting air and intensity simultaneously, mud discharge flow and backward flow mud discharge time, reach automatic backward flow, the mud function of arranging, the device can be used to the depositing reservoir, the row's mud of biochemical reaction pond and sludge impoundment, and be used for mud backward flow and biochemical anti-saltpeter backward flow.

A connecting pipe 82 is arranged between the pulse air inlet pipe 8 and the gas distribution pipe 83, two ends of the connecting pipe 82 and the lengthened pipe 5 are both provided with a connecting flange 4, the gas distribution pipe 83 is communicated with the pulse air inlet pipe 8 through the connecting pipe 82 and the connecting flange 4, two ends of the lengthened pipe 5 are respectively communicated with the sludge discharge pipe 9 and the sludge suction pipe 3 through the connecting flange 4, through the design of the lengthened pipe 5 and the connecting flange 4, the distance between the sludge suction pipe 3 and the gas-liquid separation box 1 can be increased according to requirements, the lengthened pipe 5 is unequal in length and can be selected according to requirements, the gas distribution pipe 83 is designed on the lengthened pipe 5, the gas distribution pipe 83 is connected with the pulse air inlet pipe 8, pulse air flow can be further increased, and the phenomenon that the pressure inside the sludge suction pipe 3 is insufficient due to the increase of the distance between the sludge suction pipe 3 and the gas-liquid separation box 1 is avoided;

an exhaust valve 14 is arranged on the exhaust pipe 13, a mud valve 12 is arranged on the return pipe 11, the top end of the mud pipe 9 extends to the bottom end inside the gas-liquid separation box 1, a guide plate 15 is arranged on the inner side surface of the gas-liquid separation box 1 corresponding to the mud pipe 9, the guide plate 15 is of an arc-shaped structure, and after sludge is sucked into the gas-liquid separation box 1 through the mud suction pipe 3, the flow is guided by the guide plate 15, so that the sludge can be conveniently discharged through the return pipe 11;

last formula air feed subassembly is including installing in inhaling lasting intake pipe 7 of mud horn mouth 2 one side, inhale the inside lower extreme of mud horn mouth 2 and install wind ring 21, the medial surface of wind ring 21 runs through to have a plurality of gas outlets 22 in inhaling 2 inside wall distributions of mud horn mouth, gas outlet 22 sets up for the slope, the one end that lasts intake pipe 7 runs through inhales mud horn mouth 2 and is linked together with wind ring 21, gas outlet 22's port is provided with the one-way piece, the other end that lasts intake pipe 7 is connected with and lasts the air feed source, it is lasting air feed source for the air feed, when convenient taking out mud at mud suction pipe 3, form the air current to 3 inside flows of mud suction pipe in inhaling mud horn mouth 2, thereby make and inhale 2 interior ascending impact force of forming of mud horn mouth, the convenience produces an ascending thrust to the mud that inhales mud pipe 3, thereby can accelerate mud entering in mud suction pipe 3.

The working principle of the utility model is as follows: when the device is used, the exhaust valve 14 on the exhaust pipe 13 is closed, then a continuous air supply source is utilized to provide continuous compressed air flow to the mud suction bell mouth 2 through the continuous air inlet pipe 7, and meanwhile, an intermittent air supply source is also controlled to provide pulse compressed air flow into the mud suction pipe 3 through the pulse air inlet pipe 8, so that the pressure in the mud suction pipe 3 is smaller than the external atmospheric pressure, and further, the sludge is sucked into the mud suction pipe 3 from the mud suction bell mouth 2 and is matched with upward thrust generated by the air ring 21 on the inner side of the mud suction bell mouth 2, so that the sludge is conveniently sucked into the gas-liquid separation box 1 through the mud suction pipe 3 and is discharged through the return pipe 11;

the length of the sludge suction pipe 3 can be increased according to the requirement, and the pulse airflow in the sludge suction pipe 3 can be further increased by utilizing the gas distribution pipe 83, so that the sludge extraction efficiency is improved;

after the sludge discharge is completed, the air inlet of the continuous air inlet pipe 7 can be stopped, the air inlet of the pulse air inlet pipe 8 is slowly reduced, when the pulse air inlet pipe 8 stops air inlet, and after the return pipe 11 does not discharge sludge, the exhaust valve 14 on the exhaust pipe 13 is opened, so that the internal pressure of the gas-liquid separation box 1 is communicated with the atmospheric pressure, and then the residual sludge in the sludge suction pipe 3 falls back into the reaction tank through the sludge suction pipe 3.

Claims

1. A pulse type air-lift sludge discharging and refluxing device in an activated sludge method is characterized by comprising a gas-liquid separation box (1), wherein the bottom of the gas-liquid separation box (1) is communicated with a sludge discharging pipe (9), the bottom end of the sludge discharging pipe (9) is connected with an extension pipe (5), the sludge discharging pipe (9) is connected with a sludge suction pipe (3) through the extension pipe (5), the upper end of the gas-liquid separation box (1) is provided with an exhaust pipe (13), the bottom end of one side of the gas-liquid separation box (1) is communicated with a reflux pipe (11), the outer side of the sludge suction pipe (3) is connected with a pulse type gas supply assembly, the bottom end of the sludge suction pipe (3) is connected with a sludge suction horn mouth (2), the bottom of the sludge suction horn mouth (2) is provided with a support (6), and the side surface of the sludge suction horn mouth (2) is connected with a continuous type gas supply assembly;

the pulse type gas supply assembly comprises a pulse gas inlet pipe (8) connected with the mud suction pipe (3) and a gas distribution pipe (83) connected with the lengthening pipe (5), and control valves (81) are arranged on the pulse gas inlet pipe (8) and the gas distribution pipe (83).

2. The pulse type air-stripping sludge discharge and reflux device in the activated sludge process according to claim 1, wherein the pulse type air supply assembly further comprises an air outlet pipe (84) with one end of a pulse air inlet pipe (8) extending to the inside of the sludge suction pipe (3) and one end of a gas distribution pipe (83) extending to the inside of the extension pipe (5), the air outlet pipe (84) is of an L-shaped structure, and one end of the pulse air inlet pipe (8) is connected with an intermittent air supply source.

3. The pulse type air-stripping sludge discharge and reflux device in the activated sludge process according to claim 1, wherein a connecting pipe (82) is arranged between the pulse air inlet pipe (8) and the air distribution pipe (83), two ends of the connecting pipe (82) and the lengthened pipe (5) are respectively provided with a connecting flange (4), the air distribution pipe (83) is communicated with the pulse air inlet pipe (8) through the connecting pipe (82) and the connecting flange (4), and two ends of the lengthened pipe (5) are respectively communicated with the sludge discharge pipe (9) and the sludge suction pipe (3) through the connecting flange (4).

4. The pulse type air-stripping sludge discharging and returning device in the activated sludge process according to claim 1, wherein an exhaust valve (14) is arranged on the exhaust pipe (13), a sludge discharge valve (12) is arranged on the return pipe (11), the top end of the sludge discharge pipe (9) extends to the bottom end inside the gas-liquid separation tank (1), a guide plate (15) is arranged on the inner side surface of the gas-liquid separation tank (1) corresponding to the sludge discharge pipe (9), and the guide plate (15) is of an arc-shaped structure.

5. The pulse type air-lift sludge discharging and refluxing device in the activated sludge process according to claim 1, wherein the continuous air supply assembly comprises a continuous air inlet pipe (7) installed on one side of the sludge suction bell mouth (2), an air ring (21) is installed at the lower end of the inside of the sludge suction bell mouth (2), and a plurality of air outlets (22) are distributed on the inner side wall of the sludge suction bell mouth (2) and penetrate through the inner side surface of the air ring (21).

6. The activated sludge process of claim 5 wherein the air outlet (22) is inclined, one end of the continuous air inlet pipe (7) is communicated with the air ring (21) through the sludge suction bell mouth (2), the port of the air outlet (22) is provided with a one-way sheet, and the other end of the continuous air inlet pipe (7) is connected with a continuous air supply source.