CN107935209B - Aeration partial pressure control method - Google Patents
Aeration partial pressure control method Download PDFInfo
- Publication number
- CN107935209B CN107935209B CN201711020935.6A CN201711020935A CN107935209B CN 107935209 B CN107935209 B CN 107935209B CN 201711020935 A CN201711020935 A CN 201711020935A CN 107935209 B CN107935209 B CN 107935209B
- Authority
- CN
- China
- Prior art keywords
- aeration
- air
- pipe
- divider
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005273 aeration Methods 0.000 title claims abstract description 134
- 238000000034 method Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 238000005192 partition Methods 0.000 claims description 35
- 238000009434 installation Methods 0.000 abstract description 4
- 230000001502 supplementing effect Effects 0.000 description 15
- 230000000694 effects Effects 0.000 description 4
- 229920006351 engineering plastic Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
-
- 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)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention discloses an aeration partial pressure control method, which realizes the function of adjusting the gas pressure along with the back pressure of each aeration pipe in the aeration process by arranging a voltage divider in an aeration tank and balancing the back pressures of aeration pipes with different installation heights through the voltage divider. The aeration partial pressure device can realize partial pressure aeration of the same aeration system, and can still ensure the stable flow of each aeration pipe under the condition that the mounting heights of the aeration pipes are different, thereby effectively avoiding the phenomenon of uneven aeration caused by inconsistent mounting heights of the aeration pipes.
Description
Technical Field
The invention relates to an aeration partial pressure control method. The method is mainly applied to the water treatment aeration process, and a single pressure air source is divided into a plurality of pressure values by the partial pressure control method, so that the method can be applied to the water treatment aeration process requiring a plurality of aeration pressures.
Background
The aeration process is one of the common processes of water treatment plants. The aeration process not only has the function of oxygenation, but also has the function of fluidizing the water body. In general, the aeration process of a water treatment plant uses an air source with the same pressure, and an aeration pipe needs to be kept horizontal to ensure uniform aeration. Once the aeration tube is uneven for some reason, more gas is discharged in a relatively higher aeration tube, and less gas is discharged in a relatively lower aeration tube, thereby affecting aeration uniformity.
To accommodate this characteristic of the aeration process, the bottom plate of the aeration tank of the water treatment plant is usually made horizontal, which raises the problem that the design of the aeration tank is subject to the horizontal installation conditions of the aeration tubes. Meanwhile, if a plurality of aeration tanks share one fan, the aeration pipe of each aeration tank must be ensured to be at the same horizontal position, and once the aeration tank is installed, errors occur, or displacement occurs due to vibration of the aeration pipe or uneven settlement occurs in structures during aeration, and uneven aeration can be caused.
In order to solve the problem, it is necessary to study an aeration partial pressure control method, which decomposes the same pressure air source into a plurality of air sources with different pressures, thereby better adapting to the development of aeration technology.
Disclosure of Invention
The invention aims to provide an aeration partial pressure control method, which enables the same aeration system to form air sources with various pressures by the principle that water pressure difference and air pressure difference are mutually offset. Meanwhile, the control method can also control the air quantity of each pressure air source, so that the partial pressure aeration and the shunt quantity aeration can be realized.
In order to achieve the above object, the technical scheme of the present invention is as follows: the aeration partial pressure control method is characterized by comprising the following steps:
A. the device comprises a voltage divider, wherein the voltage divider comprises a closed cavity, an air inlet pipe socket is arranged above the voltage divider, the inside of the voltage divider is divided into a plurality of air chambers with upper parts isolated and bottom communicated through a partition plate, the partition plate is arranged in a radial mode from the position of the air inlet pipe socket to the outside, a plurality of air outlets are arranged on the side face of the voltage divider, each air outlet corresponds to one air chamber, and the height of each air outlet is higher than the bottom height of the partition plate in the voltage divider;
B. the air inlet pipe is inserted into the pressure divider through an air inlet pipe socket, the air inlet pipe is inserted to be flush with the bottom of the partition plate in the pressure divider, and the air outlet is connected with the aeration device;
C. filling the pressure divider with water;
D. when aeration is started, gas enters the pressure divider from the gas inlet pipe, the gas quantity of each gas chamber is distributed through the partition plate in the pressure divider, the gas is accumulated above each gas chamber of the pressure divider due to the action of floating force in the pressure divider, water in the pressure divider is extruded to be discharged through the gas outlet pipe, when the elevation of the bottom of the gas in each gas chamber is consistent with the elevation of the gas outlet pipe gas hole, no water is discharged, and the gas can be directly discharged through the gas outlet pipe, at the moment, the height of the water surface in each gas chamber is consistent with the height of the gas outlet pipe of the aeration pipe.
Further, the pressure divider is also connected with a water supplementing pipe, the bottom elevation of the lowest air outlet pipe is at least 30cm higher than the bottom of the partition plate, and when the bottom elevation of any air chamber in the pressure divider, which is lower than the air outlet pipe, exceeds 10cm, water supplementing is carried out through the water supplementing pipe.
Further, the cross section of the pressure divider is circular or regular polygon, and the diameter of the pressure divider in the horizontal direction is 10 times to more than 50 times of the diameter of the air inlet pipe.
Further, when the perforated aeration pipe mode is adopted, the air outlet pipe is an aeration pipe, air holes are formed in the aeration pipe, the diameter of the holes is 4mm to 5mm, the holes are formed in the two sides in a staggered mode, and the angle of the holes is inclined downwards by an angle of alpha degrees with the horizontal direction, wherein the angle of the holes is 45 degrees to 90 degrees.
Furthermore, the partition board is an adjustable partition board, the position of the adjustable partition board can be adjusted according to the actual aeration quantity distribution condition, and the required aeration quantity is distributed for each air chamber.
According to the invention, the back pressure of the aeration pipes with different mounting heights is balanced through the voltage divider, so that the function of adjusting the gas pressure along with the back pressure of each aeration pipe in the aeration process is realized. The aeration partial pressure device can realize partial pressure aeration of the same aeration system, and can still ensure the stable flow of each aeration pipe under the condition that the mounting heights of the aeration pipes are different, thereby effectively avoiding the phenomenon of uneven aeration caused by inconsistent mounting heights of the aeration pipes. Meanwhile, the aeration quantity of each air chamber can be adjusted by controlling the size of each air chamber, so that the function of controlling the aeration quantity of each part of aeration process is achieved. The size of the voltage divider is determined according to parameters such as aeration quantity, installation height of the aeration pipes and the like, and the main function of the voltage divider is to balance the pressure difference of the aeration pipes with different installation heights through the voltage divider, so that the aeration systems of the same air source can simultaneously supply the aeration pipes with different back pressures. The aeration partial pressure control method has strong adaptability, and can be used for not only creating a new pool type, but also modifying the pool type.
Drawings
FIG. 1 is a schematic plan view of an aeration partial pressure control method.
FIG. 2 is a schematic cross-sectional view of the aeration partial pressure control method.
Fig. 3 is a detailed view of the aeration tube.
The drawings include: the air inlet pipe 1, the pressure divider 2, the air outlet pipe 3, the partition plate 4 and the air hole 5.
Description of the embodiments
The invention is further described below with reference to the drawings and examples.
The aeration partial pressure device shown in the figure mainly comprises
The pressure divider 2 comprises a closed cavity, an air inlet pipe socket is arranged above the pressure divider, the pressure divider is internally divided into a plurality of air chambers with upper parts isolated and bottom communicated through a partition board 4, a plurality of air outlets are arranged on the side face of the pressure divider, each air outlet corresponds to one air chamber, and the height of each air outlet is higher than the bottom height of the partition board in the pressure divider;
the air inlet pipe 1 is inserted into the pressure divider through an air inlet pipe socket, and is inserted to be flush with the bottom of the inner partition plate of the pressure divider.
As shown in the drawing, in this embodiment, the partition board is disposed radially outwards with the air inlet pipe socket as the center, so as to divide the pressure divider 2 into a first air chamber X1, a second air chamber X2, a third air chamber X3, and so on, each air chamber is arranged in a fan shape, the corresponding angles of each air chamber are a1, a2, and a3 respectively, the top of the partition board is connected with the top of the pressure divider, and a gap is left between the bottom of the partition board and the bottom of the pressure divider, so that the air chambers are communicated at the bottom. The air inlet pipe socket is arranged at the center of the pressure divider 2, the air inlet pipe 1 is inserted into the air inlet pipe socket, the upper end of the air inlet pipe 1 upwards penetrates through the pressure divider and then is connected with the aeration main pipe or the aeration branch pipe, the air inlet source is a blower, and the lower end of the air inlet pipe is flush with the bottom of the inner partition plate of the pressure divider. The side surfaces of the air chambers are respectively provided with an air outlet, the air outlet is in height consistency with the aeration pipe, and the air outlet pipe is in height consistency with the aeration pipe. The pressure divider is also provided with a water supplementing pipe which is connected with the pressure divider 2 and has the main function of supplementing purified water into the pressure divider.
The number of the air chambers can be adjusted according to the requirement of the aeration process, and the height setting requirement of the air outlet can be determined by the aeration process. The air chambers are separated by the partition plates, and the air pressure is the same as the back pressure of the aeration device when different air chambers operate. The air chamber Xn (n=1, 2,3 …) is the nth air chamber in the voltage divider, and the air pressure of the Xn air chamber is "standard atmospheric pressure+hn2+hn3", where hn2+hn3 is the back pressure of the air outlet pipe corresponding to the Xn air chamber.
As shown in the figure, H11 is the height difference between the bottom elevation of the voltage divider 2 and the bottom elevation of the air outlet corresponding to the X1 air chamber, H12 is the height difference between the bottom elevation of the air outlet corresponding to the X1 air chamber and the top elevation of the X1 air chamber, and H13 is the height difference between the top elevation of the X1 air chamber and the liquid level of the aeration tank; h31 is the height difference between the bottom elevation of the divider 2 and the bottom elevation of the air outlet corresponding to the X3 air chamber, H32 is the height difference between the bottom elevation of the air outlet corresponding to the X3 air chamber and the top elevation of the X3 air chamber, and H33 is the height difference between the top elevation of the X3 air chamber and the liquid level of the aeration tank. Wherein the air pressure of the X1 air chamber is 'standard atmospheric pressure + H12+ H13', and the air pressure of the X3 air chamber is 'standard atmospheric pressure + H32+ H33'.
The partition angle corresponding to the air cell Xn is an. Typically, each chamber may be divided equally, i.e. an=360++n. The air chamber partition plate can be made into a fixed type or an adjustable type. The adjustable baffle can adjust the air inflow of each air chamber, thereby adjusting the aeration quantity of each aeration device. If one air chamber needs more air volume, the air volume of the air chamber can be increased by adjusting the partition plate, so that the aeration volume of the air chamber is increased.
The pressure divider 2 is first filled with water before aeration. When aeration is started, gas enters the pressure divider 2 from the gas inlet pipe, and the gas quantity of each gas chamber is distributed through the partition plate inside the pressure divider 2. The gas accumulates above each air chamber of the pressure divider due to the floating force in the pressure divider, and extrudes the water in the pressure divider to be discharged through the air outlet pipe. When the elevation of the bottom of the gas in each air chamber is consistent with the elevation of the air hole of the air outlet pipe, no water is discharged, and the gas can be directly discharged through the air outlet pipe. At this time, the water level in each air chamber should be consistent with the air hole height of the aeration pipe. Because the top air pressure of each air chamber is consistent with the back pressure of the aeration pipe, the pressure difference between the aeration pipes with different mounting heights is balanced by the water pressure difference of each air chamber in the pressure divider, thereby ensuring the normal aeration of the aeration pipes with different back pressures.
The air inlet pipe 1 is an air supply main pipe or a main branch pipe of the aeration system, and the pipe diameter is 50mm to 150mm.
The voltage divider 2 may be circular or may take the form of a polygon. The horizontal size of the divider is related to the amount of gas dispensed. In general, the horizontal size of the voltage divider is 10 times to 50 times of the pipe diameter of the air inlet pipe, and the larger the size of the voltage divider is, the better the voltage dividing effect is. The height of the voltage divider is related to the height difference of the air outlet pipe. The height of the voltage divider is larger than the maximum height difference of the air outlet pipe, so that a certain gas dispersion space is ensured at the bottom of the voltage divider. Theoretically, the voltage divider height has no maximum value, but it is recommended that the voltage divider height should not exceed 2m because the larger the voltage divider height is, the higher the energy loss is. If the height of the voltage divider exceeds 2m, two gas sources can be used, or the aeration amount of a high area can be reduced, so that the energy loss can be reduced. The voltage divider can be made of stainless steel, engineering plastic or reinforced concrete and other materials with certain rigidity and corrosion resistance.
The air outlet pipe 3 is connected with an air outlet of the voltage divider, the air outlet pipe 3 is horizontally laid, and air holes can be directly formed to form a perforated aeration pipe or connected with other types of aeration devices. The diameter of the air outlet pipe is 40mm to 50mm, and can be properly adjusted according to the process requirement.
The partition 4 serves to divide the air chambers in the pressure divider. The baffle can be fixed or adjustable. The adjustable partition board can be used for carrying out position adjustment according to the actual aeration quantity distribution condition, and the required aeration quantity is distributed for each air chamber.
The air hole 5 is an opening of the air outlet pipe, the diameter of the opening is 4mm to 5mm, two sides of the opening are staggered, the opening distance is calculated according to the aeration quantity, the opening angle and the horizontal direction are inclined downwards by alpha degrees, and the alpha is 45 degrees to 90 degrees. The air holes 5 are only used when the perforated aeration pipe is used for aeration, and if other types of aeration devices are used, the air holes can be replaced or eliminated.
The pressure divider is also connected with a water supplementing pipe, the water supplementing pipe can adopt a top water supplementing mode, the pipe diameter is 50mm to 200mm, and the water supplementing pipe can be adjusted according to the volume of the pressure divider. The water supplementing pipe has the function of supplementing water consumption in the pressure divider and ensuring the effect of balancing the air pressure difference of the aeration pipe through the water pressure difference. The water supplementing position can be connected with the voltage divider at other positions. The water source of the water supplementing pipe is from the self-used purified water of a water plant.
Further, the bottom elevation of the lowest air outlet pipe is at least 30cm higher than the bottom of the partition plate, and when the water level of any air chamber in the pressure divider is lower than the bottom elevation of the air outlet pipe by more than 10cm, water is supplemented through the water supplementing pipe.
In this embodiment, the air outlet pipe is provided with an air hole, so that the air outlet pipe also serves as an aeration pipe. It should be understood by those skilled in the art that the air outlet pipe can also be used as an air outlet connecting pipe, and the air outlet pipe is directly connected with an aeration pipe or other aeration devices to realize the aeration effect.
The invention differs from the prior art in that:
compared with the existing aeration system, the control method can realize partial pressure aeration of the same-pressure aeration system, increases the flexibility of the aeration process and avoids the condition of uneven aeration.
The aeration partial pressure control method can realize the adjustment of the volume of the air chamber, thereby taking into account the adjustment function of the gas flow in each air chamber.
The aeration partial pressure control method can be provided with a plurality of air chambers, and each air chamber corresponds to an aeration device with different back pressures. The number of the air chambers is determined according to the aeration process requirement.
The water supplementing pipe can supplement the water in the pressure divider during aeration, so that the effect of balancing the air pressure difference in the pressure divider is ensured.
The gas chamber partition plate of the voltage divider is adjustable, so that the voltage divider has the function of adjusting the gas flow in each gas chamber. The voltage divider can be made of stainless steel or engineering plastic according to the size, and a reinforced concrete structure can be adopted for the larger size.
The foregoing is only a preferred embodiment of the invention. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit of the invention, the scope of which is set forth in the appended claims.
Claims (5)
1. The aeration partial pressure control method is characterized by comprising the following steps:
A. the device comprises a voltage divider, wherein the voltage divider comprises a closed cavity, an air inlet pipe socket is arranged above the voltage divider, the inside of the voltage divider is divided into a plurality of air chambers with upper parts isolated and bottom communicated through a partition plate, the partition plate is arranged in a radial mode from the position of the air inlet pipe socket to the outside, a plurality of air outlets are arranged on the side face of the voltage divider, each air outlet corresponds to one air chamber, and the height of each air outlet is higher than the bottom height of the partition plate in the voltage divider;
B. the air inlet pipe is inserted into the pressure divider through an air inlet pipe socket, the air inlet pipe is inserted to be flush with the bottom of the partition plate in the pressure divider, the air outlet is connected with the aeration device, and the height of the air outlet pipe is consistent with that of the aeration pipe;
C. filling the pressure divider with water;
D. when aeration is started, gas enters the pressure divider from the gas inlet pipe, the gas quantity of each gas chamber is distributed through the partition plate in the pressure divider, the gas is accumulated above each gas chamber of the pressure divider due to the action of floating force in the pressure divider, water in the pressure divider is extruded to be discharged through the gas outlet pipe, when the elevation of the bottom of the gas in each gas chamber is consistent with the elevation of the gas outlet pipe gas hole, no water is discharged, and the gas can be directly discharged through the gas outlet pipe, at the moment, the height of the water surface in each gas chamber is consistent with the height of the gas outlet pipe of the aeration pipe.
2. The aeration partial pressure control method according to claim 1, wherein the pressure divider is further connected to a water supply pipe, the bottom elevation of the lowest air outlet pipe is at least 30cm higher than the bottom of the partition plate, and when the water level of any air chamber in the pressure divider is lower than the bottom elevation of the air outlet pipe by more than 10cm, water is supplied through the water supply pipe.
3. The aeration partial pressure control method according to claim 1, wherein the cross section of the pressure divider is circular or regular polygon, and the diameter dimension of the pressure divider in the horizontal direction is 10 to 50 times the pipe diameter of the air inlet pipe.
4. The aeration partial pressure control method according to claim 1, wherein the aeration device is a perforated aeration pipe, air holes are arranged on the aeration pipe, the diameter of the holes is 4mm to 5mm, holes are formed in a staggered manner on two sides, and the angle of the holes is alpha degrees obliquely downward from the horizontal direction, and alpha is 45 degrees to 90 degrees.
5. The aeration partial pressure control method according to claim 1, wherein the partition plate is an adjustable partition plate, the position of the adjustable partition plate can be adjusted according to the actual aeration amount distribution condition, and each air chamber is distributed with the required aeration amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711020935.6A CN107935209B (en) | 2017-10-26 | 2017-10-26 | Aeration partial pressure control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711020935.6A CN107935209B (en) | 2017-10-26 | 2017-10-26 | Aeration partial pressure control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107935209A CN107935209A (en) | 2018-04-20 |
| CN107935209B true CN107935209B (en) | 2024-01-19 |
Family
ID=61935774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711020935.6A Active CN107935209B (en) | 2017-10-26 | 2017-10-26 | Aeration partial pressure control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107935209B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06178992A (en) * | 1991-08-07 | 1994-06-28 | Takuo Mochizuki | Aeration treatment device for liquid |
| JP2003144876A (en) * | 2001-11-15 | 2003-05-20 | Kubota Corp | Air diffuser |
| CN101344004A (en) * | 2008-08-22 | 2009-01-14 | 陈定平 | Mounting method of deep well high pressure aeration reactor steel drum |
| CN203700013U (en) * | 2014-01-21 | 2014-07-09 | 扬州富盛环保科技有限公司 | Perforated aeration device suitable for scrubbing and aerating MBR system film |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8876089B2 (en) * | 2011-09-15 | 2014-11-04 | Zenon Technology Partnership | Method and apparatus to keep an aerator full of air |
| US10828607B2 (en) * | 2012-08-09 | 2020-11-10 | Lotte Chemical Corporation | Aerator device, filter system including an aerator device, and method of aerating a filter using an aerator device |
-
2017
- 2017-10-26 CN CN201711020935.6A patent/CN107935209B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06178992A (en) * | 1991-08-07 | 1994-06-28 | Takuo Mochizuki | Aeration treatment device for liquid |
| JP2003144876A (en) * | 2001-11-15 | 2003-05-20 | Kubota Corp | Air diffuser |
| CN101344004A (en) * | 2008-08-22 | 2009-01-14 | 陈定平 | Mounting method of deep well high pressure aeration reactor steel drum |
| CN203700013U (en) * | 2014-01-21 | 2014-07-09 | 扬州富盛环保科技有限公司 | Perforated aeration device suitable for scrubbing and aerating MBR system film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107935209A (en) | 2018-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MX2012006688A (en) | Installation and industrial operation of an air supply system to dose given air flows to each individual cell of a set of electrolytic cells. | |
| CN107777792B (en) | Inclined bottom plate partial pressure aeration tank | |
| CN102701435B (en) | Method for connecting filter bricks and filter tank | |
| CN107935209B (en) | Aeration partial pressure control method | |
| CN104596003A (en) | Water distribution device for chilled water storage system of air conditioner | |
| CN107814442B (en) | Aeration partial pressure device | |
| US11280068B2 (en) | Leveling differential-pressure diversion peak-shaving water tank with function of preventing stagnant water and stale water and water supply pumping station | |
| US3876542A (en) | Liquid wastes redistribution apparatus | |
| CN201171926Y (en) | Flat bottom type vertical sand storehouse | |
| CN205784817U (en) | A kind of cloth liquid case | |
| CN204638210U (en) | A kind of high performance tank type liquid distributor | |
| CN207596577U (en) | A kind of aeration bleeder mechanism | |
| CN210206890U (en) | Distributor mounting structure of packed tower | |
| CN220578977U (en) | Large-area water distribution device for domestic sewage purification tank | |
| CN207827981U (en) | A kind of inclined floor partial pressure aeration tank | |
| JP6553433B2 (en) | Dispersing device, upward-flowing reaction device having the same, and operating method thereof | |
| CN204728402U (en) | Reduce the water tank of noise | |
| CN206784491U (en) | A kind of distribution well system of flow distribution according to need | |
| CN110743213A (en) | Multilayer sedimentation tank goes out water system | |
| RU2513401C1 (en) | Trickling filter | |
| CN110339604B (en) | Water and gas distribution system of filter | |
| CN205174663U (en) | Modularization flow self -balancing distributor that flow equalizes | |
| CN220968721U (en) | Water distribution device | |
| CN213726547U (en) | Liquid distributor | |
| CN211069067U (en) | Liquid distributor for distillation tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |