CN218709677U - Saturated dissolved oxygen aeration device - Google Patents
Saturated dissolved oxygen aeration device Download PDFInfo
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- CN218709677U CN218709677U CN202222902809.6U CN202222902809U CN218709677U CN 218709677 U CN218709677 U CN 218709677U CN 202222902809 U CN202222902809 U CN 202222902809U CN 218709677 U CN218709677 U CN 218709677U
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- 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
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Abstract
The utility model relates to a saturated dissolved oxygen aeration device, which solves the technical problems of low oxygen utilization rate and low oxygen transfer efficiency in the prior device and is provided with a saturated dissolved oxygen device, a pure oxygen inlet pipeline, a water outlet pipeline and a jet main pipe, wherein the saturated dissolved oxygen device is respectively connected with the pure oxygen inlet pipeline, the water inlet pipeline and the water outlet pipeline, and the water outlet pipeline is connected with the jet main pipe; the saturated dissolved oxygen device is equipped with dissolves the case, it is equipped with the venturi ejector to dissolve the case outside, it is equipped with discharge valve to dissolve case upper end, it is equipped with the delivery port to dissolve the case lower extreme, it is equipped with the reducing spiral pipe to dissolve incasement portion, the jet of venturi ejector and dissolve incasement reducing spiral pipe bottom intercommunication, the pure oxygen inlet line communicates with the air inlet of venturi ejector, the imbibition mouth of venturi ejector is connected to inlet pipe one end, the other end is placed in sewage treatment pond, outlet conduit one end is connected with the delivery port, the other end is responsible for with the efflux and is connected. The utility model can be widely applied to sewage treatment.
Description
Technical Field
The utility model relates to the field of sewage treatment, in particular to a saturated dissolved oxygen aeration device.
Background
Aeration is one of the most central processes in sewage treatment, especially biochemical treatment processes. The aeration is also the precondition for repairing various water bodies such as urban black and odorous riverways, eutrophic lakes, reservoirs, estuarine and seacoasts and the like.
The conventional aeration method has the following problems and disadvantages:
1. since the oxygen content in air is only about 21%, the saturated solubility of oxygen in clear water at 20 ℃ is only 9.1mg/L. Therefore, the conventional oxygen solubilization and dissolved oxygen control equipment or technical method can show that the oxygen increasing energy efficiency is low;
2. common aeration devices employ air aeration, such as mechanical aeration and forced air aeration devices. The oxygen dissolution efficiency is low whether mechanical aeration or blast aeration is adopted, and the energy consumption of the conventional oxygen solubilization and dissolved oxygen control equipment or technical method is generally high;
3. because the preparation cost of pure oxygen is expensive, if a common micropore aeration device is adopted, partial oxygen can escape from a water body to the atmosphere, waste is caused, and the aeration efficiency of the pure oxygen is reduced.
Therefore, how to improve the efficiency of oxygen solubilization and dissolved oxygen control in wastewater becomes a very important factor affecting the performance of the above-mentioned types of plants and technical processes.
2 parts of hydrogen and 1 part of oxygen are generated in the water electrolysis process, the hydrogen is stored and used for chemical synthesis, industrial smelting and other purposes, but the generated high-pressure high-purity oxygen is not recycled and is directly discharged in the air, so that the waste of resources is caused.
Disclosure of Invention
The utility model discloses a solve among the current device technical problem that oxygen utilization ratio is low, oxygen transfer efficiency is low, provide one kind and dissolve the pure oxygen and form saturated oxygen boosting sewage among the sewage fast, form the device of jet aerator with oxygen boosting sewage in biochemical pond to can directly recycle high pressure, the high-purity oxygen that electrolytic water hydrogen manufacturing produced, reduce the cost of electrolytic water hydrogen manufacturing.
The utility model provides a saturated dissolved oxygen aeration device, which is provided with a saturated dissolved oxygen device, a pure oxygen inlet pipeline, a water outlet pipeline and a jet main pipe, wherein the saturated dissolved oxygen device is respectively connected with the pure oxygen inlet pipeline, the water inlet pipeline and the water outlet pipeline, and the water outlet pipeline is connected with the jet main pipe; the saturated dissolved oxygen device is equipped with dissolves the case, it is equipped with the venturi ejector to dissolve the case outside, it is equipped with discharge valve to dissolve case upper end, it is equipped with the delivery port to dissolve the case lower extreme, it is equipped with the reducing spiral pipe to dissolve incasement portion, the jet of venturi ejector with dissolve incasement reducing spiral pipe bottom intercommunication, the pure oxygen inlet line with the air inlet intercommunication of venturi ejector, inlet pipe one end is connected the imbibition mouth of venturi ejector, the other end is placed in sewage treatment pond, outlet pipe way one end with the delivery port is connected, the other end with the efflux is responsible for and is connected.
Preferably, the device is also provided with a dissolved oxygen detector and a PLC automatic control system, wherein the dissolved oxygen detector is electrically connected with the PLC automatic control system; and the pure oxygen inlet pipeline is provided with a pressure controller and a flow controller, and the pressure controller and the flow controller are respectively electrically connected with the PLC automatic control system.
Preferably, a pressure sensor is arranged at the top of the dissolving tank and electrically connected with the PLC automatic control system.
Preferably, discharge valve is electronic discharge valve, electronic discharge valve passes through oxygen recovery pipe with venturi ejector backward flow mouth intercommunication, electronic discharge valve with PLC automatic control system electricity is connected.
Preferably, the reducing spiral pipe is of a spiral pipe body structure, and the spiral diameter is reduced layer by layer from bottom to top; the end of the reducing spiral pipe with large spiral diameter is positioned at the bottom of the dissolving box.
Preferably, the dissolving tank is a steel structure shell, and the shape of the dissolving tank is a cuboid, a cylinder, a cone or a multi-prismatic surface structure.
Preferably, the jet flow device is further provided with jet flow nozzles, the jet flow nozzles are connected with the jet flow main pipe, and the number of the jet flow nozzles is positively correlated with the flow rate in the jet flow main pipe.
The utility model has the advantages that:
(1) The utility model discloses a reducing spiral pipe has improved the contact time of oxygen and sewage, and utilize reducing spiral mode to make oxygen and sewage mix at the intraductal pressure boost of spiral, here the rotatory in-process oxygen of pressure boost finally dissolves in sewage with the saturation, remaining undissolved oxygen is in reducing spiral pipe export spun in the twinkling of an eye, because pressure release and formation vibrate, broken little bubble that becomes continues to accomplish the high-efficient high-quality solution of oxygen and sewage, produce the sewage of high saturation solubility oxygen and little bubble, and carry to carry out the secondary by the delivery port to jet nozzle and spray, improve the transfer efficiency of oxygen by a wide margin.
(2) The utility model discloses the electric exhaust valve who installs above dissolving the case will dissolve the interior undissolved oxygen discharge of case, sneak into the venturi ejector again through the oxygen recovery pipe in, constantly retrieve the recycle, changed the wasting of resources disadvantage that traditional aeration surplus undissolved gas directly discharged, the direct improvement the utilization ratio of oxygen, reduced sewage treatment cost and energy consumption.
(3) The utility model discloses can adopt the accessory substance oxygen that electrolytic water hydrogen manufacturing technology produced to carry out high-pressure aeration as the air supply, solve electrolytic water hydrogen manufacturing technology oxygen and not obtained utilizing the problem of direct emission, indirectly reduced the manufacturing cost of electrolytic water hydrogen manufacturing.
(4) The utility model discloses be equipped with PLC automatic control system, thereby according to the dissolved oxygen concentration of effluent water sump sewage, the accurate aeration is realized to the automatic control air input, satisfies sewage treatment technology greatly reduced aeration energy consumption simultaneously, reduces the wasting of resources.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic view of the structure of the saturated oxygen dissolving device of the present invention;
FIG. 3 is a structural diagram of the Venturi ejector of the present invention;
fig. 4 is a schematic structural view of embodiment 2 of the present invention.
Description of the symbols of the drawings:
1. a pure oxygen inlet pipeline; 2. a saturated dissolved oxygen device; 3. a water inlet pipeline; 4. a water outlet pipeline; 5. an equipment leg; 6. a jet main pipe; 7. a jet nozzle; 8. a dissolved oxygen detector; 9, a PLC automatic control system; 21. a venturi ejector; 21-1. An air inlet; 21-2. A reflux port; 21-3. Injection ports; 21-4, a liquid suction port; 22. an oxygen recovery tube; 23. an electric exhaust valve; 24. a pressure sensor; 25. a dissolving tank; 26. a variable diameter spiral tube; 27. and (7) a water outlet.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, so that those skilled in the art can easily implement the present invention.
Example 1:
as shown in fig. 1-3, the present embodiment is provided with a saturated dissolved oxygen device 2, a dissolved oxygen detector 8 and a PLC automatic control system 9, wherein a pure oxygen intake pipeline 1 and a water intake pipeline 3 are arranged at the front end of the saturated dissolved oxygen device 2, the pure oxygen intake pipeline 1 is provided with a pressure controller and a flow controller, and the pressure controller and the flow controller are respectively electrically connected with the PLC automatic control system 9; the lower end of the saturated dissolved oxygen device 2 is provided with a water outlet pipeline 4, and the front end of the water outlet pipeline 4 is provided with a main jet pipe 6 and a jet nozzle 7. The PLC automatic control system 9 is respectively and electrically connected with the dissolved oxygen detector 8 and the saturated dissolved oxygen device 2. The bottom of the saturated dissolved oxygen device 2 is provided with an equipment supporting leg 5.
The saturated dissolved oxygen device 2 is an integral sealed steel structure shell and is provided with a Venturi ejector 21, an oxygen recovery pipe 22, an electric exhaust valve 23, a pressure sensor 24, a dissolving tank 25, a reducing spiral pipe 26 and a water outlet 27. The dissolving tank 25 is a steel structure shell, and the shape of the dissolving tank can be a cuboid, a cylinder, a cone or a multi-prismatic surface structure. The reducing spiral pipe 26 is of a spiral pipe body structure, and the spiral diameter is reduced layer by layer from bottom to top; the reducing helix tube 26 is installed inside the dissolving tank 25 in such a manner that one end having a large helix diameter is located at the bottom of the dissolving tank 25. The venturi ejector 21 is installed at the bottom of the outer side of the dissolving tank 25, and the jet orifice of the venturi ejector 21 is communicated with the bottom of the reducing spiral pipe 26 in the dissolving tank 25. The electric exhaust valve 23 is arranged at the top of the dissolving tank 25 and is communicated with the return port of the venturi ejector 21 through the oxygen recovery pipe 22, and the electric exhaust valve 23 is controlled by the PLC automatic control system 9. The pressure sensor 24 is installed on the top of the dissolving tank 25, monitors the internal pressure of the dissolving tank 25 in real time, and transmits a signal to the PLC automatic control system 9.
The pure oxygen air inlet pipeline 1 is communicated with an air inlet 21-1 of the Venturi ejector 21, one end of the water inlet pipeline 3 is connected with a liquid suction port 21-4 of the Venturi ejector, the other end of the water inlet pipeline is placed in the sewage treatment tank, one end of the water outlet pipeline 4 is connected with a water outlet, the other end of the water outlet pipeline is connected with the jet main pipe, the jet nozzle 7 is installed on the jet main pipe 6, and different numbers of jet nozzles 7 are installed according to different flow rates. The dissolved oxygen detector 8 is arranged in the sewage treatment tank and is connected with the PLC automatic control system 9.
The embodiment is mainly applied to the condition that the water pool is in a half-ground or full-ground structure, namely, the saturated dissolved oxygen device 2 is arranged on the supporting legs 5 of the external equipment of the pool body, and the liquid level in the pool is higher than the saturated dissolved oxygen device 2; one end of a pure oxygen inlet pipeline 1 is communicated with an air inlet 21-1, the other end of the pure oxygen inlet pipeline is connected with an oxygen discharge port for hydrogen production by water electrolysis or a high-pressure pure oxygen source, and a pressure controller and a flow controller are installed on a connecting pipeline; one end of the water inlet pipeline 3 is communicated with the liquid suction port 21-4, and the other end is immersed in the sewage treatment tank; when high-pressure oxygen enters the Venturi ejector 21, vacuum negative pressure is generated at the liquid suction port 21-4 and the return port 21-2 through the Venturi effect, sewage is sucked into the Venturi ejector 21 under the action of self liquid level pressure difference and the vacuum negative pressure, and is mixed with the oxygen and sprayed into the reducing spiral pipe 26, and as the reducing spiral pipe 26 adopts bottom water inlet and top water outlet, the spiral pipe pressurizes the oxygen and the sewage after the oxygen and the sewage continuously flow in, so that the oxygen is promoted to be dissolved in the sewage; the spiral pipe has the structural form that the spiral diameter is gradually reduced from bottom to top, sewage and oxygen do centrifugal motion in the reducing spiral pipe 26, the direction of each inertia force is the tangential direction of the spiral, the tangential included angle of the inertia force is increased due to the fact that the diameter of the spiral is continuously reduced, the flow direction of the oxygen and the sewage is inwards extruded, therefore, secondary pressurization of the oxygen and the sewage is achieved, the dissolving efficiency of the oxygen is further improved, and the oxygen and the sewage are dissolved until saturation through multiple times of pressurization of the reducing spiral pipe 26; the oxygen is sprayed into a dissolving tank 25 from the tail end of a spiral pipe, undissolved oxygen rises to the top in the dissolving tank 25, is discharged into an oxygen recovery pipe 22 through an electric exhaust valve 23 arranged at the top, and is sucked into a return port 21-2 again, saturated dissolved oxygen sewage enters a main spraying pipe 6 arranged at the bottom of a sewage treatment tank from a water outlet 27 at the bottom of the dissolving tank 25 through a pipeline, a jet nozzle 7 arranged on the main spraying pipe 6 sprays the saturated dissolved oxygen sewage into the sewage treatment tank, the dissolved oxygen in the tank is increased, and simultaneously, the sludge and the like at the bottom of the tank are subjected to jet stirring;
at the moment, the PLC automatic control system 9 can receive a dissolved oxygen concentration signal fed back by a dissolved oxygen detector 8 arranged in the sewage treatment tank, and the PLC automatic control system 9 can control a flow controller arranged on the pure oxygen inlet pipe 1 according to different dissolved oxygen requirements, so that accurate aeration is achieved, resources are saved, and the sewage treatment requirements are met;
the PLC automatic control system 9 receives the pressure signal of the pressure sensor 24 at the same time, monitors the internal pressure of the dissolving tank 25 by presetting, and adjusts the internal pressure of the dissolving tank 25 and the discharge of the remaining oxygen through the electric exhaust valve.
Example 2:
as shown in fig. 2, it is another application example of the present invention, and the embodiment is mainly applied to a pool form of a structure which is completely underground or has a large depth of the pool, that is, the saturated dissolved oxygen device 2 is installed inside the pool body, and the purpose of the installation inside the pool body is to make the water inlet pipeline 3 and the liquid suction port 21-4 have enough liquid level pressure difference with the liquid level, so that the water inlet of the liquid suction port 21-4 is more smooth; after the high pressure pure oxygen enters the venturi ejector 21, the operation of the apparatus is identical to the embodiment of fig. 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, since various modifications and changes will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the scope defined by the claims of the present invention shall be within the protection scope of the present invention.
Claims (7)
1. A saturated dissolved oxygen aeration device is characterized by comprising a saturated dissolved oxygen device, a pure oxygen inlet pipeline, a water outlet pipeline and a jet main pipe, wherein the saturated dissolved oxygen device is respectively connected with the pure oxygen inlet pipeline, the water inlet pipeline and the water outlet pipeline; the saturated dissolved oxygen device is equipped with dissolves the case, it is equipped with the venturi ejector to dissolve the case outside, it is equipped with discharge valve to dissolve case upper end, it is equipped with the delivery port to dissolve the case lower extreme, it is equipped with the reducing spiral pipe to dissolve incasement portion, the jet of venturi ejector with dissolve incasement reducing spiral pipe bottom intercommunication, the pure oxygen inlet line with the air inlet intercommunication of venturi ejector, inlet pipe one end is connected the imbibition mouth of venturi ejector, the other end is placed in sewage treatment pond, outlet pipe way one end with the delivery port is connected, the other end with the efflux is responsible for and is connected.
2. The saturated dissolved oxygen aeration apparatus according to claim 1, further comprising a dissolved oxygen detector and a PLC automatic control system, wherein the dissolved oxygen detector is electrically connected to the PLC automatic control system; and the pure oxygen inlet pipeline is provided with a pressure controller and a flow controller, and the pressure controller and the flow controller are respectively electrically connected with the PLC automatic control system.
3. The saturated dissolved oxygen aeration apparatus according to claim 2, wherein a pressure sensor is arranged on the top of the dissolving tank, and the pressure sensor is electrically connected with the PLC automatic control system.
4. The saturated dissolved oxygen aeration apparatus according to claim 2, wherein the exhaust valve is an electric exhaust valve, the electric exhaust valve is communicated with the venturi ejector return port through an oxygen recovery pipe, and the electric exhaust valve is electrically connected with the PLC automatic control system.
5. The saturated dissolved oxygen aeration apparatus according to claim 1, wherein the variable diameter spiral pipe is a spiral pipe body structure, and the spiral diameter is gradually reduced from bottom to top; the end of the reducing spiral pipe with large spiral diameter is positioned at the bottom of the dissolving box.
6. The saturated dissolved oxygen aeration apparatus according to claim 1, wherein the dissolution tank is a steel structure housing in the shape of a rectangular parallelepiped, a cylinder or a cone structure.
7. The saturated dissolved oxygen aeration device according to claim 1, wherein jet nozzles are further provided, the jet nozzles are connected with the main jet pipe, and the number of the jet nozzles is positively correlated with the flow rate in the main jet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222902809.6U CN218709677U (en) | 2022-11-02 | 2022-11-02 | Saturated dissolved oxygen aeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222902809.6U CN218709677U (en) | 2022-11-02 | 2022-11-02 | Saturated dissolved oxygen aeration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218709677U true CN218709677U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222902809.6U Active CN218709677U (en) | 2022-11-02 | 2022-11-02 | Saturated dissolved oxygen aeration device |
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|---|---|
| CN (1) | CN218709677U (en) |
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2022
- 2022-11-02 CN CN202222902809.6U patent/CN218709677U/en active Active
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