CN216236561U

CN216236561U - Flexible sewage treatment biochemical cabin capable of adjusting oxidation-reduction potential

Info

Publication number: CN216236561U
Application number: CN202122812709.XU
Authority: CN
Inventors: 张永壮; 石磊; 肖鹏鹏; 黄福有
Original assignee: Shandong Huanke Environmental Protection Technology Co ltd
Current assignee: Shandong Huanke Environmental Protection Technology Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-04-08
Anticipated expiration: 2031-11-17

Abstract

The utility model relates to the field of environmental protection equipment, in particular to a flexible sewage treatment biochemical cabin capable of adjusting oxidation-reduction potential, which comprises an anaerobic cabin, an anoxic cabin, an aerobic cabin and a secondary sedimentation tank, wherein a first communicating pipe is arranged between the anaerobic cabin and the anoxic cabin, a second communicating pipe and a backflow pipe are arranged between the anoxic cabin and the aerobic cabin, a backflow pump is arranged on the backflow pipe, a third communicating pipe is arranged between the aerobic cabin and the secondary sedimentation tank, a sludge backflow pipe is arranged between the secondary sedimentation tank and the anaerobic cabin, and dissolved oxygen and oxidation-reduction potential measuring instruments are arranged in the anaerobic cabin, the anoxic cabin and the aerobic cabin. By means of the ORP measuring instrument, signals can be transmitted to the master control cabinet in real time, so that the aeration quantity, the sludge reflux ratio, the nitrifying liquid reflux ratio, the pH value, whether a carbon source is added or not and the like are adjusted in a matching mode, the purposes of saving energy and controlling the metabolism of microorganisms can be achieved, and the water treatment effect is improved.

Description

Flexible sewage treatment biochemical cabin capable of adjusting oxidation-reduction potential

Technical Field

The utility model relates to the field of environment-friendly equipment, in particular to a flexible sewage treatment biochemical cabin capable of adjusting oxidation-reduction potential.

Background

The oxidation-reduction potential is the difference between the oxidation-reduction potential of an indication electrode in liquid and the oxidation-reduction potential of a comparison electrode, and the oxidation-reduction potentials respectively suitable for an anaerobic cabin (-100 to-250 mv), an anoxic cabin (-50 to +50 mv) and an aerobic cabin (aerobic phosphorus absorption: +25 to +250mv, organic matter degradation: +50 to +250mv and nitration reaction: +100 to +350 mv).

The redox potential can give a comprehensive index of the redox state of the whole system: if the ORP value is low, the content of reducing substances or organic pollutants in the wastewater treatment system is high, the concentration of dissolved oxygen is low, and the reduction environment is dominant. If the ORP value is high, the concentration of organic pollutants in the wastewater is low, the concentration of dissolved oxygen or oxidizing substances is high, and the oxidation environment is dominant.

The traditional oxidation reduction water treatment technology has the defects of inaccurate control condition, medicament waste, environmental friendliness and the like, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a flexible sewage treatment biochemical cabin capable of adjusting oxidation-reduction potential, which is convenient to control and saves medicaments.

In order to achieve the aim, the utility model discloses a flexible sewage treatment biochemical cabin capable of adjusting oxidation-reduction potential, which is structurally characterized in that: including anaerobic chamber, anoxic chamber, aerobic compartment and two heavy ponds, install first communicating pipe between anaerobic chamber and the anoxic chamber, install second communicating pipe and back flow between anoxic chamber and the aerobic compartment, install the backwash pump on the back flow, install third communicating pipe between aerobic compartment and the two heavy ponds, install the mud back flow between two heavy ponds and the anaerobic compartment, all install dissolved oxygen, redox potential apparatus in anaerobic chamber, anoxic chamber, the aerobic compartment. The anaerobic cabin, the anoxic cabin and the aerobic cabin can be made of red mud film materials, and all the cabin bodies can bear certain pressure.

After the structure is adopted, the dissolved oxygen and oxidation reduction potential measuring instruments are arranged in the anaerobic cabin, the anoxic cabin and the aerobic cabin, and signals can be transmitted to the master control cabinet in real time by virtue of an ORP measuring instrument, so that the aeration quantity, the sludge reflux ratio, the nitrifying liquid reflux ratio, the pH value, whether a carbon source is added or not and the like can be adjusted in a matching manner, the accurate control level of the oxidation reduction water treatment technology can be greatly improved by utilizing the electric signal of ORP as a detection and control means, the purposes of saving energy sources and controlling the metabolism of microorganisms can be realized, and the water treatment effect is improved.

Regarding the mounting structure of the dissolved oxygen and oxidation-reduction potential measuring instrument, monitoring ports are arranged on the anaerobic cabin, the anoxic cabin and the aerobic cabin, the dissolved oxygen and oxidation-reduction potential measuring instrument penetrates through the monitoring ports to extend into the cabin, and sealing covers for sealing the monitoring ports are arranged on the monitoring ports.

Preferably, the anaerobic tank further comprises an adjusting tank, a lifting pump is installed in the adjusting tank, a water inlet pipe is installed at a water delivery port of the lifting pump, and the other end of the water inlet pipe is communicated with the anaerobic cabin. When the anaerobic tank works, the lifting pump operates to convey water in the regulating tank to the anaerobic tank.

In order to control the flow of water entering the anaerobic cabin, float flowmeters are respectively arranged on the water inlet pipe and the third communicating pipe, a water control pipe is arranged on the water inlet pipe, the access point of the water control pipe and the water inlet pipe is positioned between the float flowmeters and the lift pump, and ball valves are respectively arranged on the water control pipe and the third communicating pipe. The flow of water entering the anaerobic chamber can be controlled by observing the water flow value of the float flowmeter on the water inlet pipe and further adjusting the size of a ball valve on the water control pipe.

Preferably, the anaerobic chamber and the anoxic chamber are both provided with air exchange tubes, and the connection parts of the air exchange tubes, the anaerobic chamber and the anoxic chamber are positioned at the upper part of the chamber body.

Preferably, the anaerobic cabin, the anoxic cabin and the aerobic cabin are all provided with a drain pipe, and the connection part of the drain pipe and each cabin body is positioned at the lower part of the cabin body. The blow-off pipe is provided with a switch valve, and dirt in the anaerobic cabin, the anoxic cabin and the aerobic cabin is discharged by opening the blow-off pipe.

Preferably, the connection part of the second communicating pipe with the anoxic chamber and the aerobic chamber is positioned at the upper part of the cabin body, the connection part of the return pipe with the anoxic chamber is positioned at the lower part of the cabin body, and the connection part of the return pipe with the aerobic chamber is positioned at the middle part of the cabin body.

Preferably, the water inlet pipe and the return pipe are both provided with one-way valves. The backflow of fluid in the inlet and return pipes can be avoided.

Preferably, the connection part of the third communicating pipe with the aerobic tank and the secondary sedimentation tank is positioned at the upper part of the tank body. The lower part of the aerobic chamber is connected with an aeration pipe, and a fan is arranged on the aeration pipe. When the aerobic tank works, the fan aerates the aerobic tank to provide oxygen required by degrading organic matters and nitrifying for aerobic microorganisms;

preferably, a sludge reflux pump is arranged in the secondary sedimentation tank, the sludge reflux pipe extends into the secondary sedimentation tank and is connected with the sludge reflux pump, and the connecting part of the sludge reflux pipe and the anaerobic cabin is positioned at the lower part of the cabin body.

In conclusion, the beneficial effects of the utility model are as follows: dissolved oxygen and oxidation-reduction potential measuring instruments are arranged in the anaerobic cabin, the anoxic cabin and the aerobic cabin, by means of an ORP measuring instrument, the detection principle is similar to pH, and an electric signal of ORP is used as a detection and control means, so that the accurate control level of the oxidation-reduction water treatment technology can be greatly improved, the purposes of saving energy sources and controlling the metabolism of anaerobic microorganisms can be realized, and the water treatment effect is improved. The anaerobic cabin, the anoxic cabin and the aerobic cabin can be made of red mud film materials, and all the cabin bodies can bear certain pressure. The float flowmeter on the water inlet pipe can be used for monitoring the water flow value, so that the size of a ball valve on the water control pipe can be adjusted, and the water flow entering the anaerobic chamber is controlled.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the figure: the device comprises a regulating tank 1, a lifting pump 2, a water control pipe 3, a water inlet pipe 4, an anaerobic cabin 5, an anoxic cabin 6, a monitoring port 7, a one-way valve 8, an aerobic cabin 9, a first communicating pipe 10, a sewage discharge pipe 11, a return pipe 12, an aeration pipe 13, a reflux pump 14, a secondary sedimentation tank 15, a sludge return pipe 16, a sludge return pump 17, a second communicating pipe 18, a ventilation pipe 19, a third communicating pipe 20, a ball valve 21 and a float flowmeter 22.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

A flexible sewage treatment biochemical cabin capable of adjusting oxidation-reduction potential is structurally characterized in that: the anaerobic tank comprises an anaerobic tank 5, an anoxic tank 6, an aerobic tank 9 and a secondary sedimentation tank 15, wherein a first communicating pipe 10 is arranged between the anaerobic tank 5 and the anoxic tank 6, a second communicating pipe 18 and a return pipe 12 are arranged between the anoxic tank 6 and the aerobic tank 9, a return pump 14 is arranged on the return pipe 12, a third communicating pipe 20 is arranged between the aerobic tank 9 and the secondary sedimentation tank 15, a sludge return pipe 16 is arranged between the secondary sedimentation tank 15 and the anaerobic tank 5, and dissolved oxygen and an oxidation-reduction potential measuring instrument are arranged in the anaerobic tank 5, the anoxic tank 6 and the aerobic tank 9. The anaerobic cabin 5, the anoxic cabin 6 and the aerobic cabin 9 can be made of red mud film materials, and all the cabin bodies can bear certain pressure. Referring to the attached figure 1, after the structure is adopted, dissolved oxygen and oxidation-reduction potential measuring instruments are installed in the anaerobic cabin 5, the anoxic cabin 6 and the aerobic cabin 9, by means of an ORP measuring instrument, the detection principle is similar to pH, and an electric signal of ORP is used as a detection and control means, so that the accurate control level of the oxidation-reduction water treatment technology can be greatly improved, the purposes of saving energy, controlling the metabolism of anaerobic microorganisms and improving the water treatment effect can be realized.

Regarding the mounting structure of the dissolved oxygen and oxidation-reduction potential measuring instrument, monitoring ports 7 are arranged on the anaerobic chamber 5, the anoxic chamber 6 and the aerobic chamber 9, the dissolved oxygen and oxidation-reduction potential measuring instrument penetrates through the monitoring ports 7 to extend into the chamber body, and sealing covers for sealing the monitoring ports 7 are arranged on the monitoring ports 7.

Referring to the attached figure 1, the anaerobic tank also comprises an adjusting tank 1, wherein a lifting pump 2 is arranged in the adjusting tank 1, a water inlet pipe 4 is arranged at a water delivery port of the lifting pump 2, and the other end of the water inlet pipe 4 is communicated with an anaerobic cabin 5. In operation, the lift pump 2 operates to deliver water from the conditioning tank 1 to the anaerobic tank 5.

In order to control the flow of water entering the anaerobic chamber 5, a float flowmeter 22 is arranged on each of the water inlet pipe 4 and the third communicating pipe 20, a water control pipe 3 is arranged on the water inlet pipe 4, the access point of the water control pipe 3 and the water inlet pipe 4 is positioned between the float flowmeter 22 and the lift pump 2, and ball valves 21 are arranged on each of the water control pipe 3 and the third communicating pipe 20. The flow of water entering the anaerobic chamber 5 can be controlled by observing the numerical value of water flow of the float flowmeter 22 on the water inlet pipe 4 and further adjusting the size of the ball valve 21 on the water control pipe 3.

Referring to the attached figure 1, the anaerobic cabin 5 and the anoxic cabin 6 are both provided with a ventilation pipe 19, and the connection part of the ventilation pipe 19, the anaerobic cabin 5 and the anoxic cabin 6 is positioned at the upper part of the cabin body. The anaerobic cabin 5, the anoxic cabin 6 and the aerobic cabin 9 are all provided with a sewage discharge pipe 11, and the connecting parts of the sewage discharge pipes 11 and each cabin body are positioned at the lower parts of the cabin bodies. The switch valve is arranged on the sewage discharge pipe 11, and dirt in the anaerobic cabin 5, the anoxic cabin 6 and the aerobic cabin 9 is discharged by opening the sewage discharge pipe 11. The connecting parts of the second communicating pipe 18, the anoxic cabin 6 and the aerobic cabin 9 are positioned at the upper part of the cabin body, the connecting part of the return pipe 12 and the anoxic cabin 6 is positioned at the lower part of the cabin body, and the connecting part of the return pipe 12 and the aerobic cabin 9 is positioned at the middle part of the cabin body.

Referring to fig. 1, a check valve 8 is installed on each of the inlet pipe 4 and the return pipe 12. A counter flow of fluid in the inlet conduit 4 and the return conduit 12 is avoided. The connection part of the third communicating pipe 20 with the aerobic compartment 9 and the secondary sedimentation tank 15 is positioned at the upper part of the compartment body. The lower part of the aerobic chamber 9 is connected with an aeration pipe 13, and a fan is arranged on the aeration pipe 13. A sludge reflux pump 17 is arranged in the secondary sedimentation tank 15, a sludge reflux pipe 16 extends into the secondary sedimentation tank 15 and is connected with the sludge reflux pump 17, and the connecting part of the sludge reflux pipe 16 and the anaerobic cabin 5 is positioned at the lower part of the cabin body.

Correlation of each element with oxidation-reduction potential (ORP):

1. dissolved oxygen: ORP positive correlation, 2. nitrate content: positive correlation with ORP, 3. pH: negative correlation with ORP, 4. temperature: negative correlation with ORP, 5. addition of carbon source: is inversely related to ORP.

Controlling related quantity of each sewage pool:

1. anaerobic pool, methane production: the ORP range is controlled to be 175mv to-400 mv; anaerobic phosphorus release: the ORP range is controlled to be between-100 mv to-250 mv; the requirements are as follows: firstly, controlling the temperature to be 25-35 ℃ as much as possible, and controlling the temperature to be not lower than 12 ℃ at the lowest; secondly, controlling the pH value to be 6.8-7.2 as much as possible. And (3) control measures: generally, when the ORP is not in the range of-100 to-250 mv, for example, when the ORP is not-50 mv, the dissolved oxygen in the anaerobic pool is probably higher, and the concentration of the returned sludge is considered to be improved or the return flow is considered to be reduced. ② the rotating speed of the submersible mixer is reduced or the running time of the submersible mixer is reduced.

2. An anoxic tank, denitrification: the ORP range is controlled to be between-50 mv to +50 mv; the requirements are as follows: firstly, controlling the pH value to be 6.8-7.5 as much as possible; ② the optimal reaction temperature is 20-35 ℃ and the lowest reaction temperature is not lower than 12 ℃. And (3) control measures: if ORP is too low, the stirring frequency of the stirrer is accelerated, the opening time of the perforating aeration is prolonged, the air quantity regulating valve of the perforating aeration pipe of the anoxic pond is enlarged, or the internal reflux is increased. Secondly, if ORP is too high, the stirring frequency of the stirrer is reduced, or the opening time of the perforating aeration is reduced, or the air quantity regulating valve of the perforating aeration pipe of the anoxic tank is reduced, or the internal reflux is reduced (care and comprehensive consideration are needed). And thirdly, if the ORP at the tail end of the anoxic tank is higher, the nitrate content is higher, and the denitrification reaction is not thorough, adding a carbon source to reduce the ORP.

3. An aerobic tank for aerobic phosphorus absorption: the ORP range is controlled to be between +25mv and +250 mv; degrading organic matters: the ORP range is controlled to be between +50mv and +250 mv; nitration reaction: the ORP range is controlled to be between +100mv and +350 mv; the requirements are as follows: firstly, controlling the temperature to be between 15 and 30 ℃ as much as possible, and controlling the temperature to be not lower than 12 ℃ at the lowest; secondly, controlling the pH value to be 6.5-8.5 as much as possible. And (3) control measures: adjusting aeration quantity according to an OPR value, and reducing the aeration quantity when ORP is too high. If ORP is too low, aeration rate is increased.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a biochemical cabin of flexible sewage treatment of adjustable redox potential, includes anaerobic cabin (5), oxygen deficiency cabin (6), good oxygen cabin (9) and two heavy ponds (15), a serial communication port, install first communicating pipe (10) between anaerobic cabin (5) and oxygen deficiency cabin (6), install second communicating pipe (18) and back flow (12) between oxygen deficiency cabin (6) and good oxygen cabin (9), install backwash pump (14) on back flow (12), install third communicating pipe (20) between good oxygen cabin (9) and two heavy ponds (15), install sludge return pipe (16) between two heavy ponds (15) and anaerobic cabin (5), all install dissolved oxygen in anaerobic cabin (5), oxygen deficiency cabin (6), good oxygen cabin (9), the redox potential apparatus.

2. The flexible biochemical sewage treatment cabin capable of adjusting the oxidation-reduction potential according to claim 1, wherein the anaerobic cabin (5), the anoxic cabin (6) and the aerobic cabin (9) are respectively provided with a monitoring port (7), a dissolved oxygen and oxidation-reduction potential measuring instrument penetrates through the monitoring port (7) and extends into the cabin body, and a sealing cover for sealing the monitoring port (7) is arranged on the monitoring port (7).

3. The flexible biochemical sewage treatment cabin capable of adjusting the oxidation-reduction potential according to claim 1, further comprising an adjusting tank (1), wherein a lift pump (2) is installed in the adjusting tank (1), a water inlet pipe (4) is installed at a water inlet of the lift pump (2), and the other end of the water inlet pipe (4) is communicated with the anaerobic cabin (5).

4. The biochemical cabin for treating flexible sewage with adjustable oxidation-reduction potential according to claim 3, characterized in that a float flowmeter (22) is installed on each of the water inlet pipe (4) and the third communicating pipe (20), a water control pipe (3) is installed on each of the water inlet pipe (4), an access point of the water control pipe (3) and the water inlet pipe (4) is located at a position between the float flowmeter (22) and the lift pump (2), and ball valves (21) are installed on each of the water control pipe (3) and the third communicating pipe (20).

5. The flexible biochemical sewage treatment tank with the adjustable oxidation-reduction potential according to claim 1, wherein the anaerobic tank (5) and the anoxic tank (6) are both provided with ventilation pipes (19), and the connection parts of the ventilation pipes (19) with the anaerobic tank (5) and the anoxic tank (6) are positioned at the upper part of the tank body.

6. The flexible biochemical sewage treatment cabin capable of adjusting the oxidation-reduction potential according to claim 1, wherein the anaerobic cabin (5), the anoxic cabin (6) and the aerobic cabin (9) are all provided with a sewage discharge pipe (11), and the connection part of the sewage discharge pipe (11) and each cabin body is positioned at the lower part of the cabin body.

7. The biochemical sewage treatment chamber with the adjustable oxidation-reduction potential according to claim 1, wherein the connection part of the second communication pipe (18) with the anoxic chamber (6) and the aerobic chamber (9) is located at the upper part of the chamber body, the connection part of the return pipe (12) with the anoxic chamber (6) is located at the lower part of the chamber body, and the connection part of the return pipe (12) with the aerobic chamber (9) is located at the middle part of the chamber body.

8. The biochemical sewage treatment cabin capable of adjusting the oxidation-reduction potential according to claim 3, wherein a one-way valve (8) is installed on each of the water inlet pipe (4) and the return pipe (12).

9. The biochemical cabin for treating flexible sewage with adjustable oxidation-reduction potential according to claim 1, characterized in that the connection part of the third communicating pipe (20) with the aerobic cabin (9) and the secondary sedimentation tank (15) is located at the upper part of the cabin body.

10. The flexible biochemical sewage treatment tank with the adjustable oxidation-reduction potential according to claim 1, wherein a sludge return pump (17) is installed in the secondary sedimentation tank (15), a sludge return pipe (16) extends into the secondary sedimentation tank (15) and is connected with the sludge return pump (17), and the connecting part of the sludge return pipe (16) and the anaerobic tank (5) is positioned at the lower part of the tank body.