CN112723527A - Universal square air-water distribution filter brick and water distribution system - Google Patents
Universal square air-water distribution filter brick and water distribution system Download PDFInfo
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- CN112723527A CN112723527A CN202011626729.1A CN202011626729A CN112723527A CN 112723527 A CN112723527 A CN 112723527A CN 202011626729 A CN202011626729 A CN 202011626729A CN 112723527 A CN112723527 A CN 112723527A
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- 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
- C02F3/06—Aerobic processes using submerged filters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
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- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a general square air-water distribution filter brick, which comprises a primary water distribution chamber, an air distribution chamber and a secondary water distribution chamber; the air distribution chamber is positioned above the primary water distribution chamber, the primary water distribution chamber comprises a bottom plate, a lower top plate and a lower inclined plate connected between the lower top plate and the bottom plate, and the air distribution chamber comprises an upper top plate, a lower top plate and an upper inclined plate connected between the upper top plate and the lower top plate; the second-stage water distribution chamber is positioned on the side surfaces of the gas distribution chamber and the first-stage water distribution chamber and comprises a middle top plate, an upper inclined plate, a lower inclined plate, a bottom plate and side plates; the height of the middle top plate is higher than that of the lower top plate and lower than that of the upper top plate. The invention can realize the simultaneous upward air distribution and downward water discharge on one filter brick, is suitable for denitrification filter tanks and biological aerated filter tanks, has good water and air distribution uniformity, and the whole filter brick layer is stable and easy to disassemble and replace. The invention also discloses a filter brick water distribution system.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a general square gas-water distribution filter brick and a water distribution system.
Background
The air-water distribution filter brick is used as a core component of the filter, and the air-water distribution performance of the air-water distribution filter brick directly influences the treatment effect of the filter. CN108328729A discloses a filter brick water distribution system, adopts a plurality of water distribution chamber to reach the even distribution air water mesh to adopt the connected mode of bell and spigot and sealing washer, accomplish the equipment of filter brick through specialized tool. However, when the filter bricks are installed, C30 concrete needs to be poured into gaps between adjacent filter bricks and the pool wall, so that the whole air-water distribution system and the pool bottom form a whole, and although the operation stability is strong, the installation and maintenance difficulty is increased. CN208617475U discloses a multi-stage air distribution and water distribution filter brick, which is provided with three stages of air-water distribution chambers, and each distribution chamber is provided with three rows of holes with different pore diameters; when backwashing gas and water enter the primary cavity simultaneously, the gas flows upwards, the water flows downwards, the gas preferentially enters the headspace of the primary cavity, then enters the secondary cavity through the inner wall discharge hole, the water enters the secondary cavity through the lower discharge hole, and the like, and the functions of no dead angle of backwashing, no perforation, uniform gas distribution and water distribution and the like are achieved under the conditions of longer filter tank length and deeper filter material depth through multi-stage distribution and multi-stage compensation. CN210495361U discloses a gas-water distribution filter brick, wherein a U-shaped arch-shaped support plate is adopted in a filter brick cavity, so that the filter brick has stronger pressure resistance; during backwashing, air is uniformly distributed upwards from the air distribution holes at the upper parts of the filter bricks, and backwashing water flows upwards from gaps among the filter bricks after flowing out along the water through holes at the lower parts of the filter bricks, so that water and air flow separately without conflict interference, and the backwashing efficiency is improved; the filter brick adopts the HDPE material, and the material is stable, long service life.
The square air-water distribution filter bricks solve the problems of uneven air-water distribution, complex installation, easy bulging deformation and the like of the traditional filter bricks to different degrees, but all belong to air-water homodromous distribution, are mainly used for air-water backwashing of a filter tank, are not suitable for a down-flow aeration biological filter tank which needs oxygen-charging aeration in the reverse water flow direction during operation, and have insufficient universality of the filter bricks. In addition, the filter brick has room for improvement in the aspects of simplicity in manufacturing and installation, uniformity in air and water distribution, stability in long-term operation and the like.
CN109796074A discloses a filter brick for a biological aerated filter, which comprises a first chamber, a second chamber and a third chamber which are distributed in a W shape from bottom to top. When the filter tank is aerated, the oxygenated air enters the third chamber from the first chamber through the upper orifice plate part and is discharged upwards from the upper end surface of the filter brick, and the sewage enters the second chamber from the upper end surface of the filter brick under the repulsion of the upstream air and flows downwards through the lower orifice plate part. When the filter is backwashed, the backwashed air enters the third chamber from the first chamber through the upper hole plate part from the aeration pipe and the short branch pipe and is discharged from the upper end surface of the filter brick upwards, and the backwashed water is discharged from bottom to top through the hole plate, the second chamber, the third chamber and the upper end surface of the filter brick upwards. The filter brick can perform upward aeration and downward water passing simultaneously, meets the operation requirement of the biological aerated filter, however, the molding manufacture of the filter brick is more complicated, the fixing mode between the filter brick and the filter brick is not mentioned, the problems of the filter brick such as uplifting, deformation and damage are easy to occur in long-term operation, and the maintenance is more difficult. CN109650533A by the company of china water service limited also refers to a filter brick for a biological aerated filter, wherein a filter brick layer has a plurality of rows of filter bricks laid horizontally in sequence, wherein the filter bricks in odd rows are filter bricks in a first state, the filter bricks in even rows are filter bricks in a second state, a first gas distribution pipeline and a second gas distribution pipeline are respectively extended to one of the filter bricks in the first state and the filter bricks in the second state, a first gas distribution valve is arranged on the first gas distribution pipeline, a second gas distribution valve is arranged on the second gas distribution pipeline, only one of the first gas distribution valve and the second gas distribution valve is in an open state in an aeration mode, and the working states are exchanged after a predetermined time; when the first air distribution valve is opened and the second air distribution valve is closed, the first state filter brick is in an aeration mode, the second state filter brick is in a filtering mode, and the reverse is true. When the filter tank is backwashed, the working conditions of all the filter bricks are the same. The invention does not solve the problems of complicated layout and control of gas distribution pipelines and complicated molding and manufacturing of filter bricks, does not mention the fixing mode between the filter bricks, is easy to fail and string pipes when the gas distribution control is operated for a long time, and is easy to bulge, deform and damage adjacent filter bricks due to different working modes, and is difficult to maintain and repair.
Disclosure of Invention
Aiming at the technical problems, the invention provides a general square air-water distribution filter brick and a water distribution system, which can be used for an up-flow back washing process of a filter tank and a down-flow biological aerated filter tank.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a general square air-water distribution filter brick comprises a primary water distribution chamber, an air distribution chamber and a secondary water distribution chamber; the air distribution chamber is positioned above the primary water distribution chamber, the primary water distribution chamber comprises a bottom plate, a lower top plate and a lower inclined plate connected between the lower top plate and the bottom plate, and the air distribution chamber comprises an upper top plate, a lower top plate and an upper inclined plate connected between the upper top plate and the lower top plate;
the second-stage water distribution chamber is positioned on the side surfaces of the gas distribution chamber and the first-stage water distribution chamber and comprises a middle top plate, an upper inclined plate, a lower inclined plate, a bottom plate and side plates;
the height of the middle top plate is higher than that of the lower top plate and lower than that of the upper top plate.
Further, a row of lower inclined plate water passing holes are arranged at the bottom of the lower inclined plate, a row of upper inclined plate water passing holes are arranged at the bottom of the upper inclined plate, a row of water distribution holes are arranged on one side, close to the upper inclined plate, of the middle top plate, a branch pipe perforation is arranged in the middle of the lower top plate, a branch pipe for air distribution penetrates through the branch pipe, and a plurality of air distribution holes are arranged on the upper top plate.
Furthermore, the upper inclined plate is transversely provided with a compensation baffle plate on the inner side of the gas distribution chamber.
Preferably, the compensation baffles are arranged on the upper half part of one upper inclined plate and the lower half part of the other upper inclined plate.
Furthermore, the compensation baffle is uniformly provided with the air holes, so that the backwashing water is resistant to water flow impact and not easy to break when entering.
Furthermore, the height from the middle top plate to the upper top plate is 1/4-1/8 from the lower top plate to the upper top plate.
Preferably, the two second-stage water distribution chambers positioned on the side surfaces of the air distribution chamber and the first-stage water distribution chamber are of a symmetrical structure, and the upper inclined plate and the lower inclined plate are symmetrically arranged along the lower top plate, so that the manufacturing simplicity and the design aesthetic feeling of the filter brick can be improved.
Furthermore, two rows of connecting devices are arranged on the side plates, and each connecting device comprises a convex block and a groove; the connecting devices are arranged on the side plates connected with the adjacent filter bricks in a mutually matched way, so that the adjacent filter bricks are connected in a jogged way in the transverse direction through the connecting devices; in the two rows of connecting devices arranged on the left side plate and the right side plate of the filter brick, the convex blocks and the grooves are kept adjacent and transversely arranged correspondingly, so that the transverse connection stability of the filter brick can be enhanced.
Furthermore, one end of each filter brick in the axial direction is a threaded convex ring, the other end of each filter brick is a threaded notch, and adjacent filter bricks are connected end to end from front to back through the corresponding threaded convex rings and the corresponding threaded notches. The thread convex ring and the thread notch are internally provided with the sealing ring, so that the connection tightness can be enhanced.
Preferably, the filter brick is made of concrete and high-strength HDPE.
The invention also discloses a filter brick water distribution system, which comprises the universal square gas-water distribution filter bricks which are spliced with each other, and further comprises a gas distribution main pipe, wherein an upward gas distribution branch pipe is arranged on the gas distribution main pipe corresponding to each filter brick, and the gas distribution branch pipe penetrates through a branch pipe perforation of the lower top plate.
Preferably, the filter brick layer pool wall of the water distribution system is provided with a convex block and a groove which are correspondingly connected with the convex block and the groove of the filter brick, so that the installation is stable, and the filter brick layer pool wall is easy to disassemble and replace.
During backwashing, air enters the air distribution chamber from the air distribution main pipe through the air distribution branch pipe, is distributed and compensated for many times through the compensation baffle plates transversely arranged on the two upper inclined plates, and can be uniformly distributed at the air distribution holes of the upper top plate. The backwashing water enters the second-stage water distribution chamber from the first-stage water distribution chamber through water holes at the bottom of the lower inclined plate, and is distributed upwards through water distribution holes on one side of the middle top plate close to the upper inclined plate, or enters the air distribution chamber through water holes at the bottom of the upper inclined plate, and is independently or cooperatively used with backwashing air, and the water is uniformly distributed at the air distribution holes on the upper top plate.
During aeration, air enters the air distribution chamber from the air distribution main pipe through the air distribution branch pipes, is distributed and compensated for many times through the compensation baffles transversely arranged on the two upper inclined plates, and can be uniformly distributed at the air distribution holes of the upper top plate. The water discharged from the filter pool is converged into a water outlet groove formed by splicing two transversely adjacent filter bricks under the impact of upward airflow, flows down into a secondary water distribution chamber through a water distribution hole at one side of the middle top plate close to the upper inclined plate, then enters into a primary water distribution chamber through a water passing hole at the bottom of the lower inclined plate, and finally flows to a water outlet area.
The invention has the advantages that:
(1) the filter brick realizes the simultaneous upward air distribution and downward water outflow, and is not only suitable for a denitrification filter, but also suitable for a biological aerated filter which requires reverse air inlet and water outflow during working;
(2) the water and gas distribution uniformity is improved through the design of a multi-stage water distribution cavity and a gas distribution cavity with a compensation baffle;
(3) by means of the transverse and axial connecting devices, the stable connection of adjacent filter bricks is realized, so that the whole filter brick layer is stable and easy to disassemble and replace.
Drawings
FIG. 1 is a front view of a square gas-water distribution filter brick structure in accordance with an embodiment of the present invention;
FIG. 2 is a partial enlarged view of water holes of the lower sloping plate of the filter brick according to the embodiment of the present invention;
FIG. 3 is a partial enlarged view of inclined plate water holes of the filter brick according to the embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of the air distribution holes of the filter block according to the embodiment of the present invention;
FIG. 5 is a view of a filter block axial threaded connection according to an embodiment of the present invention;
FIG. 6 is a schematic view of a transverse interlocking connection of adjacent filter bricks according to an embodiment of the present invention;
FIG. 7 is a schematic flow diagram of a single gas purge of an embodiment of the invention;
FIG. 8 is a schematic flow diagram of a single water wash of an embodiment of the present invention;
FIG. 9 is a schematic flow diagram of air-water combined backwash flow according to an embodiment of the invention;
FIG. 10 is a schematic flow diagram of the flow of the water of the operating gas of the biological aerated filter according to the embodiment of the invention.
In the figure: 1 is a first-stage water distribution chamber, 11 is a bottom plate, 12 is a lower top plate, 121 is a perforation of an air distribution branch pipe, 2 is an air distribution chamber, 21 is a compensation baffle, 211 is an air hole, 22 is an upper top plate, 221 is an air distribution hole, 3 is a second-stage water distribution chamber, 31 is a lower inclined plate, 311 is a water through hole of the lower inclined plate, 32 is an upper inclined plate, 321 is a water through hole of the upper inclined plate, 33 is a middle top plate, 331 is a water distribution hole, 34 is a side plate, 341 is a groove, 342 is a lug, 4 is an air distribution branch pipe, 5 is a thread notch, and 6 is a thread convex ring.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
Referring to fig. 1 and 2, the general square air-water distribution filter brick of the invention is made of concrete and comprises a first-stage water distribution chamber 1, an air distribution chamber 2 and two second-stage water distribution chambers 3. The first-stage water distribution chamber 1 is composed of a bottom plate 11, a lower top plate 12 and a lower inclined plate 31, the lower top plate 12 is used for separating the first-stage water distribution chamber 1 from an upper air distribution chamber 2, the lower inclined plate 31 is used for separating the first-stage water distribution chamber 1 from two second-stage water distribution chambers 3 on two sides, and a row of water passing holes 311 are arranged at the bottom of the lower inclined plate. The water holes 311 are preferably formed at the joint of the lower inclined plate 31 and the bottom plate 11, so as to ensure that the first-stage water distribution chamber 1 has no accumulated water (as shown in fig. 2). The air distribution chamber 2 is composed of a lower top plate 12, an upper top plate 22 and an upper inclined plate 32, a branch pipe perforation is arranged at the central position of the lower top plate 12 for the air distribution branch pipe 4 to pass through, a plurality of air distribution holes 221 are uniformly arranged on the upper top plate 22, a row of water passing holes 321 (namely the connection positions of the upper inclined plate 32, the lower inclined plate 31 and the lower top plate 12, as shown in fig. 3) are arranged at the bottom of the upper inclined plate 32, compensation baffles 21 are transversely arranged at the positions 1/3 and 2/3 of the two upper inclined plates 32 respectively, and a plurality of rows of air holes 211 (as shown in fig. 4) are uniformly arranged on the. Two second grade water distribution chambers 3 are bilateral symmetry and are all formed by bottom plate 11, middle roof 33, curb plate 34, upper sloping plate 32 and lower sloping plate 31, and lower sloping plate 31 lower extreme is located bottom plate 11 tip, or leaves certain distance with bottom plate 11 tip, for example: the upper inclined plate 32 and the lower inclined plate 31 are symmetrically arranged, and at the moment, a distance is reserved between the lower inclined plate 31 and the end part of the bottom plate 11, so that the upper inclined plate and the lower inclined plate are symmetrical up and down, and the appearance is attractive. The height of the middle top plate 33 from the upper top plate 22 is about 1/7 the height of the lower top plate 12 from the upper top plate 22, one side of the middle top plate close to the upper inclined plate 32 is provided with a row of water distribution holes 331, and the side plate 34 is provided with two rows of connecting devices which are respectively a groove 341 and a bump 342. The adjacent filter bricks are jogged and connected in the transverse direction through the grooves 341 and the projections 342, and the adjacent and transverse corresponding arrangement is kept, and the projections and the grooves (shown in figures 5 and 6) arranged on the wall of the filter brick layer are correspondingly connected. The adjacent filter bricks are connected in the axial direction through the threaded recesses 5 and the threaded convex rings 6, and the sealing rings are filled in the adjacent filter bricks (as shown in figure 5). The gas distribution main pipe is provided with a gas distribution branch pipe 4 which is vertically upward corresponding to each filter brick, and the length of the gas distribution branch pipe penetrates through a gas distribution branch pipe perforation 121 (shown in figure 6) of the lower top plate 12.
During backwashing, referring to fig. 7, air enters the air distribution chamber 2 from the air distribution main pipe through the air distribution branch pipe 4, and is distributed and compensated for a plurality of times through the compensation baffle 21 transversely arranged on the two upper inclined plates 32, so that air can be uniformly distributed at the air distribution holes 221 of the upper top plate 22. Referring to fig. 8, the backwash water enters the secondary water distribution chamber 3 from the primary water distribution chamber 1 through the water holes 311 at the bottom of the lower inclined plate 31, and is distributed upwards through the water distribution holes 331 at one side of the upper inclined plate 32 closely attached to the middle top plate 33, or enters the air distribution chamber 2 through the water holes 321 at the bottom of the upper inclined plate 32, and is distributed uniformly at the air distribution holes 221 of the upper top plate 22 by means of single or cooperative backwash air. The air-water combined backwash flow direction is shown in fig. 9.
During aeration, referring to fig. 10, air enters the air distribution chamber 2 from the air distribution main pipe through the air distribution branch pipe 4, and is distributed and compensated for a plurality of times through the compensation baffle plates 21 transversely arranged on the two upper inclined plates 32, so that air can be uniformly distributed at the air distribution holes 221 of the upper top plate 22. The water discharged from the filter pool is converged into a water outlet groove 332 formed by splicing two transversely adjacent filter bricks under the impact of upward airflow, flows down into the secondary water distribution chamber 3 through the water distribution holes 331 tightly attached to one side of the upper inclined plate 32 by the middle top plate 33, then enters the primary water distribution chamber 1 through the water through holes 311 at the bottom of the lower inclined plate 31, and finally flows to a water outlet area.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (10)
1. A general square air water distribution filter brick is characterized in that: comprises a first-stage water distribution chamber, an air distribution chamber and a second-stage water distribution chamber;
the air distribution chamber is positioned above the primary water distribution chamber, the primary water distribution chamber comprises a bottom plate, a lower top plate and a lower inclined plate connected between the lower top plate and the bottom plate, and the air distribution chamber comprises an upper top plate, a lower top plate and an upper inclined plate connected between the upper top plate and the lower top plate;
the second-stage water distribution chamber is positioned on the side surfaces of the gas distribution chamber and the first-stage water distribution chamber and comprises a middle top plate, an upper inclined plate, a lower inclined plate, a bottom plate and side plates;
the height of the middle top plate is higher than that of the lower top plate and lower than that of the upper top plate.
2. The universal square gas-water distribution filter brick according to claim 1, characterized in that: a row of lower inclined plate water passing holes are arranged at the position where the lower inclined plate is connected with the bottom plate, a row of upper inclined plate water passing holes are arranged at the bottom of the upper inclined plate, a row of water distribution holes are arranged at one side of the middle top plate close to the upper inclined plate, a branch pipe perforation is arranged in the middle of the lower top plate, and a plurality of arrangement air holes are arranged on the upper top plate.
3. The universal square gas-water distribution filter brick according to claim 1, characterized in that: the upper sloping plate is transversely provided with a compensation baffle plate at the inner side of the gas distribution chamber.
4. The universal square gas-water distribution filter brick according to claim 3, characterized in that: the compensating baffle is arranged on the upper half part of one upper inclined plate and the lower half part of the other upper inclined plate; air holes are uniformly distributed on the compensation baffle.
5. The universal square gas-water distribution filter brick according to claim 1 or 3, characterized in that: the height from the middle top plate to the upper top plate is 1/4-1/8 from the lower top plate to the upper top plate.
6. The universal square gas-water distribution filter brick according to claim 1, characterized in that: the two second-stage water distribution chambers positioned on the side surfaces of the air distribution chamber and the first-stage water distribution chamber are of symmetrical structures, and the upper inclined plate and the lower inclined plate are symmetrically arranged along the lower top plate.
7. The universal square air water distribution filter brick according to any one of claims 1 to 6, characterized in that: two rows of connecting devices are arranged on the side plates, and each connecting device comprises a convex block and a groove; the connecting devices are arranged on the side plates connected with the adjacent filter bricks in a mutually matched way; in two rows of connecting devices arranged on the left side plate and the right side plate of the filter brick, the convex blocks and the grooves are kept adjacent and transversely arranged correspondingly.
8. The universal square air water distribution filter brick according to any one of claims 1 to 6, characterized in that: one axial end of each brick is provided with a threaded convex ring, the other axial end of each brick is provided with a threaded notch, and adjacent filter bricks are connected through the threaded convex rings and the threaded notches which are opposite; the thread convex ring and the thread notch are internally provided with a sealing ring.
9. A filter brick water distribution system characterized by: the square gas-water distribution filter brick comprises the square gas-water distribution filter bricks which are spliced with one another and are as in any one of claims 1 to 8, and further comprises a gas distribution main pipe, wherein an upward gas distribution branch pipe is arranged on the gas distribution main pipe corresponding to each filter brick, and the gas distribution branch pipes penetrate through branch pipe through holes of a lower top plate.
10. The tile distribution system of claim 9, wherein: the filter brick layer pool wall of the water distribution system is provided with the convex blocks and the grooves which are correspondingly connected with the convex blocks and the grooves of the filter bricks, so that the installation is stable, and the filter bricks are easy to disassemble and replace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011626729.1A CN112723527B (en) | 2020-12-30 | 2020-12-30 | Universal square air-water distribution filter brick and water distribution system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011626729.1A CN112723527B (en) | 2020-12-30 | 2020-12-30 | Universal square air-water distribution filter brick and water distribution system |
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| Publication Number | Publication Date |
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| CN112723527A true CN112723527A (en) | 2021-04-30 |
| CN112723527B CN112723527B (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011626729.1A Active CN112723527B (en) | 2020-12-30 | 2020-12-30 | Universal square air-water distribution filter brick and water distribution system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2436213Y (en) * | 2000-07-28 | 2001-06-27 | 台州中昌水处理设备有限公司 | Composite water and gas reversal flushing filter brick |
| CN108328729A (en) * | 2018-02-11 | 2018-07-27 | 杭州宸祥环境工程有限公司 | A kind of S types filter block water distribution system |
| CN208617475U (en) * | 2018-02-25 | 2019-03-19 | 合肥中盛水务发展有限公司 | A kind of multistage gas distribution water distribution filter block |
| CN109650533A (en) * | 2019-02-26 | 2019-04-19 | 中持水务股份有限公司 | Biological aerated filter using filter block and the method for treating water using the biological aerated filter |
| CN109796074A (en) * | 2019-02-26 | 2019-05-24 | 中持水务股份有限公司 | Filter block for biological aerated filter and the biological aerated filter using the filter block |
| CN110734104A (en) * | 2019-11-20 | 2020-01-31 | 南京大学 | water and gas distribution device and system |
-
2020
- 2020-12-30 CN CN202011626729.1A patent/CN112723527B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2436213Y (en) * | 2000-07-28 | 2001-06-27 | 台州中昌水处理设备有限公司 | Composite water and gas reversal flushing filter brick |
| CN108328729A (en) * | 2018-02-11 | 2018-07-27 | 杭州宸祥环境工程有限公司 | A kind of S types filter block water distribution system |
| CN208617475U (en) * | 2018-02-25 | 2019-03-19 | 合肥中盛水务发展有限公司 | A kind of multistage gas distribution water distribution filter block |
| CN109650533A (en) * | 2019-02-26 | 2019-04-19 | 中持水务股份有限公司 | Biological aerated filter using filter block and the method for treating water using the biological aerated filter |
| CN109796074A (en) * | 2019-02-26 | 2019-05-24 | 中持水务股份有限公司 | Filter block for biological aerated filter and the biological aerated filter using the filter block |
| CN110734104A (en) * | 2019-11-20 | 2020-01-31 | 南京大学 | water and gas distribution device and system |
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| Publication number | Publication date |
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| CN112723527B (en) | 2021-11-19 |
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