CN114635879A - Air lift pump capable of conveying sludge and control method thereof - Google Patents
Air lift pump capable of conveying sludge and control method thereof Download PDFInfo
- Publication number
- CN114635879A CN114635879A CN202210363830.5A CN202210363830A CN114635879A CN 114635879 A CN114635879 A CN 114635879A CN 202210363830 A CN202210363830 A CN 202210363830A CN 114635879 A CN114635879 A CN 114635879A
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- air
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- gas
- level sensor
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- 239000010802 sludge Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 128
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000000926 separation method Methods 0.000 claims abstract description 39
- 238000005273 aeration Methods 0.000 claims abstract description 14
- 239000010865 sewage Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000000813 microbial effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
- F04F1/18—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium being mixed with, or generated from the liquid to be pumped
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention provides an air lift pump capable of conveying sludge, which comprises a transverse water inlet pipe B, a vertical liquid lifting pipe and a PLC (programmable logic controller), wherein water inlet holes are formed in the side wall of the water inlet pipe B at intervals, and the middle part of the water inlet pipe B is communicated with the lower end of the liquid lifting pipe; the side wall of the lower part of the liquid lifting pipe is connected with a plurality of air pipes, the air inlet end of each air pipe is connected with the output air pipe of the Roots blower, the air outlet end of each air pipe is communicated with the liquid lifting pipe and is positioned below the liquid level, and the air outlet end of each air pipe is provided with an aeration plate; the air inlet end of the air pipe is provided with an electric proportional control valve, and the tail end of the lift pipe is provided with a gas-liquid separation box. The invention also provides a control method of the air stripping pump. The invention has simple integral structure, safety and reliability, low maintenance cost and controllable delivery capacity, and can reduce the destructiveness on active microbial flora and improve the sewage treatment effect particularly when an activated sludge method is adopted for water treatment.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a gas stripping pump capable of conveying sludge and a control method thereof.
Background
In small and medium-sized sewage treatment stations, the conventional sewage treatment system usually adopts an activated sludge method, and the treatment process comprises a plurality of treatment tanks, wherein sewage flows and sludge flows exist among the treatment tanks. At present, the existing sewage and sludge circulating reflux usually adopts a paddle pump driven by a motor to work, and when the paddle pump is adopted, firstly, the field is limited, the number of installed paddles is limited, and the adjusting amplitude of the reflux ratio is indirectly limited; secondly, when the water quality fluctuation is large, accurate backflow is difficult to realize; thirdly, after the paddle pump is used for a long time, the paddle pump is easy to block due to the accumulation of sludge at the bottom of the pool, the sludge in the pool is difficult to discharge, and further, the maintenance cost of the equipment is high, and the energy consumption is high; fourthly, when the sludge is conveyed, the blades rotating at high speed greatly damage microbial flora used for improving water quality in the sludge, and the sewage treatment effect is influenced.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a gas stripping pump capable of conveying sludge and a control method thereof, wherein the gas stripping pump is driven by a Roots blower, has the advantages of simple structure, safety, reliability, low maintenance cost and controllable conveying capacity, is not easy to wear and block, can convey water and sludge deposited at the bottom of a pool, has low energy consumption, can prolong the service life of equipment, and can reduce the destructiveness on active microbial colonies and improve the sewage treatment effect particularly when an active sludge method is adopted for water treatment.
In order to realize the novel purpose of the use, the invention adopts the following technical scheme:
an air lift pump capable of conveying sludge comprises a transverse water inlet pipe B, a vertical liquid lifting pipe and a PLC (programmable logic controller), wherein water inlet holes are formed in the side wall of the water inlet pipe B at intervals, and the middle part of the water inlet pipe B is communicated with the lower end of the liquid lifting pipe; the side wall of the lower part of the liquid lifting pipe is connected with a plurality of air pipes, the air inlet end of each air pipe is connected with the output air pipe of the Roots blower, the air outlet end of each air pipe is communicated with the liquid lifting pipe and is positioned below the liquid level, and the air outlet end of each air pipe is provided with an aeration plate;
the air inlet end of the air pipe is provided with an electric proportional control valve, and the electric proportional control valve is electrically connected with the output end of the PLC and used for adjusting the opening and the air volume of the air pipe; and the tail end of the liquid lifting pipe is provided with a gas-liquid separation box, and the gas-liquid separation box is positioned above the liquid level.
The top of the gas-liquid separation box is provided with an exhaust port, the outlet end of the gas-liquid separation box is provided with a water outlet pipe, the upper end and the lower end of the side wall of the gas-liquid separation box are respectively provided with an upper liquid level sensor and a lower liquid level sensor, and the upper liquid level sensor and the lower liquid level sensor are respectively electrically connected with the input end of the PLC.
And a valve is arranged at the position, close to the water outlet, of the water outlet pipe.
The exhaust ends of the air pipes are consistent in height and are uniformly distributed on the side wall of the liquid lifting pipe.
The aeration plate covers the exhaust end of the air pipe, and a plurality of air holes are formed in the aeration plate.
The invention also provides a control method of the air stripping pump, which comprises the following steps:
step S1, in the initial state, the valve of the water outlet pipe is opened, the water inlet pipe is positioned below the liquid level of the treatment pool, and the electric proportional control valve is closed;
step S2, starting operation, wherein the controller controls the electric proportional control valve to be opened according to a preset value, so that pressurized air of the Roots blower enters an air pipe, and a mixture of sewage and sludge is lifted to a gas-liquid separation box;
step S3, detecting the liquid level in the gas-liquid separation box, and if the liquid level N in the gas-liquid separation box is positioned between the measuring surface A of the upper liquid level sensor and the measuring surface B of the lower liquid level sensor, then switching to step S6; if the liquid level N in the gas-liquid separation box is higher than the measuring surface A of the upper liquid level sensor, the step S4 is executed; if the liquid level N in the gas-liquid separation box is lower than the measuring surface B of the lower liquid level sensor, the step is switched to step S5;
step S4, the controller gradually reduces the switching value of the electric proportional control valve until the liquid level N in the gas-liquid separation box falls back to a position between the measuring surface A of the upper liquid level sensor and the measuring surface B of the lower liquid level sensor, and then the step S6 is carried out;
step S5, the controller increases the switching value of the electric proportional control valve step by step until the liquid level N in the gas-liquid separation box rises to a position between the measuring surface A of the upper liquid level sensor and the measuring surface B of the lower liquid level sensor, and then the step S6 is carried out;
step S6, normal operation;
and step S7, stopping and resetting.
The implementation of the invention has the beneficial effects that: the invention has simple integral structure, safety and reliability, low maintenance cost, controllable conveying capacity and difficult abrasion and blockage, can convey water and sludge deposited at the bottom of the tank, has low energy consumption in use, can prolong the service life of equipment, and can reduce the destructiveness of active microorganism flora and improve the sewage treatment effect particularly when an active sludge method is adopted for water treatment.
Drawings
FIG. 1 is a schematic diagram of the present invention.
FIG. 2 is a cross-sectional view of the connection of the lift tube to the discharge end of the air tube in accordance with an embodiment of the present invention.
Fig. 3 is a flowchart of a control method of the present invention.
In the figure: 10. roots blower 1201, air pipe, 1202, inlet tube, 1203, inlet opening, 1204, stalk, 1205, processing pond, 1206, aeration plate, 1208, gas-liquid separation case, 1209, gas vent, 1210, outlet pipe, 1211, go up liquid level sensor, 1212, lower liquid level sensor, 1213, water valve, 1215, electronic proportion control valve.
Detailed Description
The invention is described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a gas lift pump capable of conveying sludge comprises a horizontal water inlet pipe B1202, a vertical liquid lift pipe 1204 and a PLC controller which are arranged in a treatment tank 1205, wherein water inlet holes 1203 are arranged on the side wall of the water inlet pipe B1202 at intervals, and the arrangement of the water inlet holes 1203 can realize multi-stage water inlet, and when the pump is used for discharging sludge, bottom sludge of a tank body can be uniformly discharged; the middle part of the water inlet pipe B1202 is communicated with the lower end of the lift pipe 1204; the side wall of the lower part of the liquid lifting pipe 1204 is connected with a plurality of air pipes 1201, the air inlet end of each air pipe 1201 is connected with the output air pipe of the Roots blower 10, the air outlet end of each air pipe 1201 is communicated with the liquid lifting pipe 1204 and is positioned below the liquid level, and the air outlet end of each air pipe 1201 is provided with an aeration plate 1206; in one embodiment of the present invention, the number of the air tubes 1201 is three, and the exhaust ends of the three air tubes 1201 are uniformly distributed on the side wall of the lift tube 1204; the plurality of air pipes 1201 are arranged to realize larger air volume input in the cross section of the lift pipe 1204;
an electric proportional control valve 1215 is arranged at the air inlet end of the air pipe 1201, and the electric proportional control valve 1215 is electrically connected with the output end of the PLC controller and used for controlling the opening and air volume of the air pipe 1201; the end of the riser pipe 1204 is provided with a gas-liquid separation tank 1208, and the gas-liquid separation tank 1208 is located above the liquid level. In the drawings of the present invention, the PLC controller is not shown, and in general, the PLC controller may be disposed in an electric control cabinet, and the installation and fixation thereof are well known in the art.
The top of gas-liquid separation case 1208 is provided with gas vent 1209, and the exit end of gas-liquid separation case 1208 is provided with outlet pipe 1210 to be provided with level sensor 1211 and lower level sensor 1212 respectively on the lateral wall upper end of gas-liquid separation case 1208, go up level sensor 1211, lower level sensor 1212 respectively with the input electric connection of PLC controller. Specifically, the upper liquid level sensor 11 is configured to provide a parameter for controlling the decrease of the air volume of the air tube 1201 for the PLC controller, and the lower liquid level sensor 12 is configured to provide a parameter for controlling the increase of the air volume of the air tube 1201 for the PLC controller.
A valve 1213 is arranged on the water outlet pipe 1210 near the water outlet.
The exhaust ends of the air pipes 1201 are uniform in height and are uniformly distributed on the side wall of the lift pipe 1204.
The aeration plate 1206 covers the exhaust end of the air pipe 1201, and a plurality of air holes are formed in the aeration plate 1206.
As shown in fig. 3, the present invention further provides a control method of the air-lift pump, which includes the following steps:
step S1, in the initial state, the valve of the water outlet pipe is opened, the water inlet pipe is positioned below the liquid level of the treatment pool, and the electric proportional control valve is closed;
step S2, starting operation, wherein the controller controls the electric proportional control valve to be opened according to a preset value, so that pressurized air of the Roots blower enters an air pipe, and a mixture of sewage and sludge is lifted to a gas-liquid separation box;
step S3, detecting the liquid level in the gas-liquid separation box, and if the liquid level N in the gas-liquid separation box is positioned between the measuring surface A of the upper liquid level sensor and the measuring surface B of the lower liquid level sensor, turning to step S6; if the liquid level N in the gas-liquid separation box is higher than the measuring surface A of the upper liquid level sensor, the step is carried out to step S4; if the liquid level N in the gas-liquid separation box is lower than the measuring surface B of the lower liquid level sensor, the step is switched to step S5;
step S4, the controller gradually reduces the switching value of the electric proportional control valve until the liquid level N in the gas-liquid separation box falls back to a position between the measuring surface A of the upper liquid level sensor and the measuring surface B of the lower liquid level sensor, and then the step S6 is carried out;
step S5, the controller increases the switching value of the electric proportional control valve step by step until the liquid level N in the gas-liquid separation box rises to a position between the measuring surface A of the upper liquid level sensor and the measuring surface B of the lower liquid level sensor, and then the step S6 is carried out;
step S6, normal operation;
and step S7, stopping and resetting.
The principle of the invention is as follows: after the pressurized air is mixed with the sewage or sludge through the aeration plate 1206, the density of the formed mixed liquid is lower than that of the original liquid, the density difference forms the height change of the liquid level of the liquid inside and outside the liquid lifting pipe 1204, and the mixed liquid with low density rises and is discharged through the water outlet pipe 1210 along with the liquid lifting pipe 1204; the gas-liquid separation tank 1208 can reduce the flow resistance of the mixed liquid in the lift pipe 1204 and release the air in the mixed liquid from the exhaust port 1209; the valve 1213 is used for controlling the size of the water yield; the aperture of the exhaust end of the air pipe 1201 is 40mm-60mm, and a small hole with the diameter of 4mm-6mm is formed in the aeration plate; aeration plate 1206 is positioned to create and maintain effective gas-water contact and to maintain a dissolved oxygen concentration in the water with constant consumption of oxygen by biological oxidation; and to provide sufficient mixing and circulation of water in the riser 1204;
in specific use, the conveying capacity of the liquid lifting pipe can be realized by adjusting the switching value of the electric proportional control valve 1215, and the switching value of the electric proportional control valve 1215 can be set by the preset value of the PLC controller and can be corrected automatically during operation, so that the invention has adjustability; in addition, for the treatment tank with a large area, the invention can be arranged into a plurality of groups, the percentage of the sludge discharge amount can be accurately controlled under the condition of arranging the plurality of groups, the multi-working-condition accurate adjustment of the reflux ratio can be realized by changing the group number of the invention, compared with the traditional power equipment, the invention can save energy by 40-50%, and has obvious significance for saving energy and reducing consumption of a sewage plant.
As can be seen from the above discussion, the present invention is an improved air-lift pump, which is more efficient, energy-efficient, and has a controllable delivery capacity and an intelligent control function.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (6)
1. The utility model provides a can carry air lift pump of mud, includes horizontal inlet tube B (1202), vertical stalk (1204) and PLC controller, characterized by: the side wall of the water inlet pipe B (1202) is provided with water inlet holes (1203) at intervals, and the middle part of the water inlet pipe B (1202) is communicated with the lower end of the lift pipe (1204); the side wall of the lower part of the liquid lifting pipe (1204) is connected with a plurality of air pipes (1201), the air inlet end of each air pipe (1201) is connected with the output air pipe of the Roots blower (10), the air outlet end of each air pipe (1201) is communicated with the liquid lifting pipe (1204) and is positioned below the liquid level, and the air outlet end of each air pipe (1201) is provided with an aeration plate (1206);
an electric proportional control valve (1215) is arranged at the air inlet end of the air pipe (1201), and the electric proportional control valve (1215) is electrically connected with the output end of the PLC controller and is used for controlling the opening and air volume of the air pipe (1201); the tail end of the riser pipe (1204) is provided with a gas-liquid separation tank (1208), and the gas-liquid separation tank (1208) is positioned above the liquid level.
2. The airlift pump for transporting sludge as set forth in claim 1, wherein: the top of gas-liquid separation case (1208) is provided with gas vent (1209), and the exit end of gas-liquid separation case (1208) is provided with outlet pipe (1210) to be provided with liquid level sensor (1211) and liquid level sensor (1212) down respectively in the lateral wall upper end of gas-liquid separation case (1208), go up liquid level sensor (1211), liquid level sensor (1212) respectively with the input electric connection of PLC controller down.
3. The airlift pump for transporting sludge as set forth in claim 1, wherein: and a valve (1213) is arranged at the position, close to the water outlet, of the water outlet pipe (1210).
4. The airlift pump for transporting sludge as set forth in claim 1, wherein: the exhaust ends of the air pipes (1201) are consistent in height and are uniformly distributed on the side wall of the lift pipe (1204).
5. The airlift pump for transporting sludge as set forth in claim 1, wherein: the aeration plate 1206 covers the exhaust end of the air pipe (1201), and a plurality of air holes are formed in the aeration plate 1206.
6. The method for controlling the air-lift pump capable of conveying the sludge as claimed in claims 1 to 3, which is characterized by comprising the following steps:
step S1, in the initial state, the valve of the water outlet pipe is opened, the water inlet pipe is positioned below the liquid level of the treatment pool, and the electric proportional control valve is closed;
step S2, starting operation, wherein the controller controls the electric proportional control valve to be opened according to a preset value, so that pressurized air of the Roots blower enters an air pipe, and a mixture of sewage and sludge is lifted to a gas-liquid separation box;
step S3, detecting the liquid level in the gas-liquid separation box, and if the liquid level N in the gas-liquid separation box is positioned between the measuring surface A of the upper liquid level sensor and the measuring surface B of the lower liquid level sensor, turning to step S6; if the liquid level N in the gas-liquid separation box is higher than the measuring surface A of the upper liquid level sensor, the step is carried out to step S4; if the liquid level N in the gas-liquid separation box is lower than the measuring surface B of the lower liquid level sensor, the step is switched to step S5;
step S4, the controller gradually reduces the switching value of the electric proportional control valve until the liquid level N in the gas-liquid separation box falls back to a position between the measuring surface A of the upper liquid level sensor and the measuring surface B of the lower liquid level sensor, and then the step S6 is carried out;
step S5, the controller increases the switching value of the electric proportional control valve step by step until the liquid level N in the gas-liquid separation box rises to a position between the measuring surface A of the upper liquid level sensor and the measuring surface B of the lower liquid level sensor, and then the step S6 is carried out;
step S6, normal operation;
and step S7, stopping and resetting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210363830.5A CN114635879A (en) | 2022-04-08 | 2022-04-08 | Air lift pump capable of conveying sludge and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210363830.5A CN114635879A (en) | 2022-04-08 | 2022-04-08 | Air lift pump capable of conveying sludge and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114635879A true CN114635879A (en) | 2022-06-17 |
Family
ID=81952254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210363830.5A Pending CN114635879A (en) | 2022-04-08 | 2022-04-08 | Air lift pump capable of conveying sludge and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114635879A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116292446A (en) * | 2023-05-19 | 2023-06-23 | 北京万真科技有限公司 | Non-blocking high-lift lifting air stripping pump and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07256294A (en) * | 1994-03-23 | 1995-10-09 | Kubota Corp | Living waste water treatment apparatus |
| CN204932961U (en) * | 2015-08-13 | 2016-01-06 | 涟水新源生物科技有限公司 | Sedimentation basin of sewage disposal mud discharging device |
| CN105983254A (en) * | 2016-03-08 | 2016-10-05 | 南通恒和环保科技有限公司 | Liquid discharging device and method of sedimentation tank |
| CN206522288U (en) * | 2017-03-02 | 2017-09-26 | 北京万侯环境技术开发有限公司 | A kind of device of gas lift sewage sludge |
| CN208073884U (en) * | 2018-04-18 | 2018-11-09 | 乌海青石化学有限公司 | A kind of efficient airlift pump |
| CN211546180U (en) * | 2019-12-26 | 2020-09-22 | 新乡市双诚环保设备有限公司 | Full-automatic integrated sewage treatment device |
| CN111960557A (en) * | 2020-07-23 | 2020-11-20 | 世纪华扬环境工程有限公司 | Air lift pump for sewage treatment |
| CN217129949U (en) * | 2022-04-08 | 2022-08-05 | 河南天原智控环保科技有限公司 | Can carry air lift pump of mud |
-
2022
- 2022-04-08 CN CN202210363830.5A patent/CN114635879A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07256294A (en) * | 1994-03-23 | 1995-10-09 | Kubota Corp | Living waste water treatment apparatus |
| CN204932961U (en) * | 2015-08-13 | 2016-01-06 | 涟水新源生物科技有限公司 | Sedimentation basin of sewage disposal mud discharging device |
| CN105983254A (en) * | 2016-03-08 | 2016-10-05 | 南通恒和环保科技有限公司 | Liquid discharging device and method of sedimentation tank |
| CN206522288U (en) * | 2017-03-02 | 2017-09-26 | 北京万侯环境技术开发有限公司 | A kind of device of gas lift sewage sludge |
| CN208073884U (en) * | 2018-04-18 | 2018-11-09 | 乌海青石化学有限公司 | A kind of efficient airlift pump |
| CN211546180U (en) * | 2019-12-26 | 2020-09-22 | 新乡市双诚环保设备有限公司 | Full-automatic integrated sewage treatment device |
| CN111960557A (en) * | 2020-07-23 | 2020-11-20 | 世纪华扬环境工程有限公司 | Air lift pump for sewage treatment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116292446A (en) * | 2023-05-19 | 2023-06-23 | 北京万真科技有限公司 | Non-blocking high-lift lifting air stripping pump and use method thereof |
| CN116292446B (en) * | 2023-05-19 | 2023-08-25 | 北京万真科技有限公司 | Non-blocking high-lift lifting air stripping pump and use method thereof |
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