CN115108659B - Filtering and backwashing device - Google Patents
Filtering and backwashing device Download PDFInfo
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- CN115108659B CN115108659B CN202210778601.XA CN202210778601A CN115108659B CN 115108659 B CN115108659 B CN 115108659B CN 202210778601 A CN202210778601 A CN 202210778601A CN 115108659 B CN115108659 B CN 115108659B
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- filter
- filtering
- suction
- hydrodynamic cavitation
- release rod
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- 238000001914 filtration Methods 0.000 title claims abstract description 82
- 238000011001 backwashing Methods 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004744 fabric Substances 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 16
- 239000010865 sewage Substances 0.000 abstract description 14
- 239000000835 fiber Substances 0.000 abstract description 11
- 239000008394 flocculating agent Substances 0.000 abstract description 9
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- 230000003647 oxidation Effects 0.000 abstract description 7
- 230000002195 synergetic effect Effects 0.000 abstract description 7
- 239000012530 fluid Substances 0.000 description 11
- 239000012535 impurity Substances 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
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)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to the technical field of sewage treatment, and provides a filtering and backwashing device, which comprises: a filter element, a hydrodynamic cavitation device and a suction assembly; the hydrodynamic cavitation device is positioned in the filter element or at one side of the filter element, and the suction assembly comprises a suction pump and a suction pipe communicated with the suction pump, wherein the inlet of the suction pipe faces the filtering surface of the filter element. The filtering and backwashing device provided by the invention enables the organic matters in the water to reach the standard stably under the synergistic effect of the advanced oxidation effect of hydrodynamic cavitation and the filtering and backwashing, enables the backwashing of the filtering piece to be more thorough, enables suspended matters, flocculating agents and the like adhered on the fiber layer of the filtering piece to be peeled off the filtering piece, and therefore can peel dirt which is more firmly adsorbed under the same suction effect, and has a simple structure and is convenient to disassemble and assemble.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a filtering and backwashing device.
Background
In the treatment process of sewage plants, the removal of suspended matters and the removal of suspended matters formed by matching with chemical dephosphorization and the like are very important treatment process procedures no matter how to deeply treat urban sewage treatment plants and recycle the reclaimed water.
The sewage treatment equipment comprises a filter cloth filter tank or a filter cloth rotary drum filter tank which takes filter cloth as a filter medium. As filtration proceeds, the suspended matter gradually adheres to the fibrous layers formed by the fiber stack of the filter cloth and plugs the filter pores. When the channel formed by stacking fiber layers is blocked to a certain extent, a backwashing process of the filter cloth needs to be started, otherwise, the filtering equipment faces overflow phenomenon, and the water quality of the effluent is seriously affected.
In the actual operation of sewage treatment, the requirements on the effluent standard of sewage treatment are gradually strict, and the front end of the filtering equipment is mostly provided with dosing processes such as coagulation, flocculation and the like. The added chemical agent often exceeds the actual requirement, the problems of malfunction of the dosing and dissolving device, operation of staff and the like, and the agent such as coagulation, flocculation and the like does not precipitate in a precipitation tank and enter the filtering device. The medicament is adhered to the filter cloth and the fiber layer in the filtering process and cannot be removed only by the action of a backwashing pump, so that the filtering equivalent of the filter cloth is rapidly attenuated, and further the problems of frequent or even continuous backwashing and the like of filtering equipment using the filter cloth as a filtering medium are caused. In addition, some organic matters which are difficult to oxidize still exist in the effluent, and various indexes of the effluent reach the standard and are difficult to meet the requirement.
Disclosure of Invention
The present invention is directed to solving at least one of the technical problems existing in the related art. Therefore, the invention provides a filtering and backwashing device, which reduces the content of organic matters in the effluent water under the synergistic effect of the advanced oxidation technology of hydrodynamic cavitation and suction, ensures that the backwashing of the filtering piece is more thorough, has a simple structure and is convenient to disassemble and assemble.
According to an embodiment of the invention, a filtering and backwashing device comprises:
A filter;
Hydrodynamic cavitation device in the filter element or at one side of the filter element;
And the suction assembly comprises a suction pump and a suction pipe communicated with the suction pump, and the inlet of the suction pipe faces the filtering surface of the filtering piece.
According to one embodiment of the invention, the filter element forms a filter chamber, to which a filter tube is connected, which filter tube communicates with the filter chamber.
According to one embodiment of the invention, the filter element comprises a first filter cloth and a second filter cloth arranged on opposite sides of the filter chamber, the faces of the first filter cloth and the second filter cloth facing away from the filter chamber being the filter faces.
According to one embodiment of the invention, the hydrodynamic cavitation device is located within the filter cavity.
According to one embodiment of the invention, the first filter cloth and the second filter cloth are both connected with the filtering pipe, and a bracket is arranged in the filtering pipe and is connected with the hydrodynamic cavitation device.
According to one embodiment of the invention, the hydrodynamic cavitation device comprises at least one of an ultrasonic generator and a pressurizing member.
According to one embodiment of the invention, the filter element is rotatably connected to the suction tube, the filter surface is circular, and the two ends of the inlet correspond to the two ends of the radius of the filter surface, respectively.
According to one embodiment of the invention, the inlet extends in a radial direction of the filter surface.
According to one embodiment of the invention, the hydrodynamic cavitation device comprises a release rod, the filter element is rotatably connected with the release rod, and two ends of the release rod respectively correspond to two ends of the radius of the filter surface.
According to one embodiment of the invention, the release rod extends in a radial direction of the filter surface.
According to one embodiment of the invention, the suction tube is connected with a discharge tube.
The above technical solutions in the embodiments of the present invention have at least one of the following technical effects:
The filtering and backwashing device provided by the embodiment of the invention comprises a filtering piece, a hydrodynamic cavitation device and a suction assembly, wherein the hydrodynamic cavitation device and the suction assembly are applied to further oxidative decomposition of organic matters which are difficult to oxidize, and suspended matters, flocculating agents and the like adhered to a fiber layer of the filtering piece are peeled off from the filtering piece in the backwashing process of the filtering and backwashing device, so that dirt which is more firmly adsorbed can be peeled off under the same suction effect, and the backwashing of the filtering piece is more thorough by adopting the synergistic effect of hydrodynamic cavitation and suction.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic elevational view of a filtration and backwash assembly according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the portion A of FIG. 1;
FIG. 3 is a schematic side view of a filter and backwash assembly according to an embodiment of the present invention;
FIG. 4 is an enlarged schematic view of the portion B of FIG. 3;
FIG. 5 is a schematic view of a filter and an ultrasonic generator according to an embodiment of the present invention;
Fig. 6 is a schematic perspective view of a filtering and backwashing device according to an embodiment of the present invention.
Reference numerals:
1. a filter; 11. a first filter cloth; 12. a second filter cloth; 13. a filtering surface; 14. a filter tube;
2. a hydrodynamic cavitation device; 21. a release rod; 22. a bracket;
3. a suction assembly; 31. a suction tube; 311. an inlet; 32. a discharge pipe.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "top", "bottom", "inner", "outer", etc., are based on those shown in the drawings, are merely for convenience in describing the embodiments of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality", "a plurality of groups" is two or more.
In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.
In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
An embodiment of the present invention, as shown in fig. 1 to 6, provides a filtering and backwashing device including: the device comprises a filter element 1, a hydrodynamic cavitation device 2 and a suction assembly 3, wherein the hydrodynamic cavitation device 2 is positioned in the filter element 1 or positioned at one side of the filter element 1; the suction assembly 3 comprises a suction pump and a suction tube 31 in communication with the suction pump, an inlet 311 of the suction tube 31 being directed towards the filter surface 13 of the filter element 1.
The filtering piece 1 is used for filtering sewage, the sewage can be living sewage, industrial sewage and the like, the filtering piece 1 can be filter cloth or a filter screen, the structural form of the filtering piece 1 can be selected according to the filtered sewage, and the specific form of the filtering piece 1 is not limited.
The hydrodynamic cavitation device 2 is used for generating hydrodynamic cavitation effect, and utilizing the advanced oxidation effect, acceleration effect and direct flow effect of hydrodynamic cavitation to directly and indirectly act on liquid and dirt so as to remove impurities, suspended matters and the like adhered to the filter surface 13. In some cases, the filter element 1 is filtered through a filter cloth provided with a layer of filter fibers, suspended matter adhering to the layer of filter fibers and a flocculating agent. And then the suction assembly 3 is combined, the suction pump and the suction pipe 31 are matched to provide suction effect through the inlet 311 of the suction pipe 31, so that impurities, suspended matters and the like adhered to the filter surface 13 can be loosened under the suction effect, the filter element 1 can be thoroughly cleaned under the synergistic effect of hydrodynamic cavitation and suction, and thorough backwashing can be completed under the action of lower suction force, so that the stable operation of filtration is ensured, the cleaning interval of the filter element 1 is prolonged, the cleaning times of the filter element 1 are reduced, the operation cost of the filtering and backwashing device can be saved, the content of organic matters in effluent can be further reduced, and the effluent can be discharged more stably and up to the standard.
Wherein, when the filter element 1 needs backwashing, the suction pump is started and the hydrodynamic cavitation device is started, and the hydrodynamic cavitation device 2 can uniformly generate hydrodynamic cavitation at 360 degrees around. The power of the hydrodynamic cavitation device 2 can be regulated within a certain range, and can be specifically determined according to the type of the filter element 1, the condition that the filter surface 13 is blocked, and the like.
The filtering and backwashing device of the embodiment can be a filtering and backwashing device which uses filter cloth as a filter medium in sewage treatment, and the hydrodynamic cavitation device 2 and the suction assembly 3 are applied to the backwashing process of the filtering and backwashing device, so that suspended matters adhered to a fiber layer of the filter cloth, flocculating agents and the like are peeled off from the filter cloth, and dirt which is more firmly adsorbed can be peeled off under the same suction effect, such as Polyacrylamide (PAM). The filtering and backwashing device of the embodiment can also solve the problem that the filtering piece 1 is damaged due to the cutting damage to the filtering piece 1 (such as filter cloth) caused by repeated spray washing of high-pressure water when a backwashing mode of spray head spray washing of a high-pressure backwashing pump is utilized, and can reduce the suction force of the suction assembly 3 under the condition that the hydrodynamic cavitation device 2 is matched with the suction assembly 3.
In some embodiments, as shown in fig. 3 and 6, the filter element 1 is configured as a filter cavity, and the filter element 1 is connected to a filter tube 14, and the filter tube 14 communicates with the filter cavity. The fluid filtered by the filter surface 13 enters a filter cavity, and the fluid in the filter cavity is discharged out of the filter element 1 through the filter pipe 14 so as to convey the part of the fluid to the next stage of treatment process or discharge the fluid; impurities, suspended matters and the like filtered by the filter surface 13 are blocked at the outer side of the filter cavity, so that the filtration of the fluid is realized; when the filter element 1 needs to be cleaned, impurities, suspended matters and the like on the outer side of the filter surface 13 are removed through the cooperation of the hydrodynamic cavitation device 2 and the suction assembly 3, so that the filter element 1 is backwashed.
The filter element 1 may include two oppositely disposed filter surfaces 13, such as two cylindrical circular end surfaces, and the filter element 1 may further include an axially extending filter surface 13, such as a sidewall surface of a cylindrical structure, so that the filter and backwash device has a wide application range.
In some embodiments, as shown in fig. 6, the filter element 1 includes a first filter cloth 11 and a second filter cloth 12 that are disposed opposite to each other, a filter cavity is formed between the first filter cloth 11 and the second filter cloth 12, and a surface of the first filter cloth 11 and the second filter cloth 12 facing away from the filter cavity is a filter surface 13. The first filter cloth 11 and the second filter cloth 12 cooperate to filter impurities, suspended matters and the like and block the outside of the filter cavity, so that clean fluid enters the filter cavity, and the opposite two sides of the filter element 1 can play a role in filtration, thereby improving the filtration efficiency.
As shown in fig. 3 to 6, the shapes of the first filter cloth 11 and the second filter cloth 12 are circular, but the shapes of the filter cloths are not limited to circular, but may be quadrangular, pentagonal, hexagonal, elliptical, or the like, and specifically may be selected as needed.
In some embodiments, the first filter cloth 11 and the second filter cloth 12 are both connected with the filter pipes 14, so that the filter element 1 can discharge fluid through the two filter pipes 14, the discharge efficiency of the fluid in the filter cavity is ensured, and the structure is simple. Referring to fig. 6, the cross-sectional shape of the filter tube 14 is hexagonal, but is not limited to hexagonal, and may be circular, rectangular, or the like.
In some embodiments, the filter element 1 is arranged to be axially rotatable, and the filter surface 13 is arranged to extend axially or radially, in particular optionally. For example, the filtering surface 13 is a side wall surface or an end surface of a columnar structure. The filter tube 14 extends along the axis of the filter element 1 to facilitate drainage of filtered fluid through the filter tube 14.
In some embodiments, referring to fig. 1 to 4, the filter element 1 is rotatably connected to the suction pipe 31, the filter surface 13 is circular, and both ends of the inlet 311 of the suction pipe 31 correspond to both ends of the radius of the filter surface 13, respectively. It will be appreciated that the inlet 311 of the suction tube 31 covers the radius of the filter surface 13 as much as possible, and that the inlet 311 of the suction tube 31 sucks the entire area of the filter surface 13 as much as possible during rotation of the filter element 1 relative to the suction tube 31, so that the filter surface 13 is cleaned uniformly and the cleaning effect is better.
The suction pipe 31 may be kept fixed while the filter element 1 is axially rotatable, and the inlet 311 may cover the entire area of the filter surface 13 as much as possible during rotation of the filter element 1, so that impurities, suspended substances, etc. adhering to the filter surface 13 are sucked in, so that the impurities, suspended substances, etc. are cleaned, and the filter surface 13 is brought to a cleaning requirement.
In some embodiments, the inlet 311 extends radially of the filter surface 13, and the inlet 311 is of simple construction to facilitate processing of the suction tube 31.
Of course, the inlet 311 may also extend along a curve, e.g., the inlet 311 may extend along an S-shaped, L-shaped, etc. path, such that the inlet 311 may draw the entire area of the filter surface 13 during rotation of the filter element 1 relative to the suction tube 31.
It should be noted that the inlet 311 may suck the entire area of the filter surface 13, and it is understood that the inlet 311 covers the entire area of the filter surface 13 as much as possible, but if the installation is limited, the inlet 311 may be slightly reduced in size to meet the installation requirement.
In some embodiments, the suction pipe 31 is connected with a discharge pipe 32, and impurities, suspended matters, and the like sucked by the suction pipe 31 are discharged through the discharge pipe 32.
In some embodiments, the suction pump provides a negative pressure force, wherein the negative pressure force is understood as that the inlet of the suction pump forms a pressure difference with the fluid to suck and discharge suspended matters, flocculating agents and the like, and the negative pressure suction just collects and discharges desorbed suspended matters, flocculating agents and the like out of the filtering and backwashing device, so that the filtering flux of the filtering piece 1 is more thoroughly recovered.
In some embodiments, the hydrodynamic cavitation device 2 is positioned in the filter cavity, so that each surface of the filter element 1 can receive hydrodynamic cavitation as uniformly as possible, and the cleaning effect is ensured. In addition, the hydrodynamic cavitation device 2 is arranged in the filter cavity, so that the space outside the filter element 1 is not required to be occupied, and the influence on other working procedures is reduced.
In some embodiments, where the hydrodynamic cavitation device 2 is located within the filter cavity, a bracket 22 is disposed within the filter tube 14, the bracket 22 being connected to the hydrodynamic cavitation device 2. The support 22 is arranged on the filtering pipe 14 in a penetrating way, so that the support 22 and other components can be fixedly installed conveniently, the structure is simple, the support 22 is not required to be installed through other components of the filtering piece 1, and the area of the filtering surface 13 is ensured to be as large as possible.
In some embodiments, the hydrodynamic cavitation device 2 includes a release rod 21, the release rod 21 may allow hydrodynamic cavitation to act more evenly on the filter element 1, optimizing the cleaning effect.
In the case of a rotary connection of the filter element 1 to the release rod 21, the two ends of the release rod 21 correspond to the two ends of the radius of the filter surface 13.
The radius of the filter surface 13 is covered by the release rod 21 as much as possible, and the hydrodynamic cavitation generated by the release rod 21 acts on the whole area of the filter surface 13 as much as possible in the process of rotating the filter element 1 relative to the release rod 21, so that the filter surface 13 is uniformly cleaned, and the cleaning effect is better.
When the filter element 1 can rotate along the axial direction, the release rod 21 can be kept fixed, and during the rotation of the filter element 1, the release rod 21 covers the whole area of the filter surface 13 as much as possible, so that impurities, suspended matters and the like adhered to the filter surface 13 are subjected to the ultrasonic action, and the impurities, suspended matters and the like are cleaned, so that the filter surface 13 meets the cleaning requirement.
In some embodiments, the release rod 21 extends along the radial direction of the filtering surface 13, and the release rod 21 has a simple structure and facilitates uniform distribution of hydrodynamic cavitation.
Of course, the release rod 21 may also extend along a curve, such as the release rod 21 extending along an S-shaped, L-shaped, etc. path, such that the release rod 21 provides ultrasonic forces to the entire area of the filter surface 13 during rotation of the filter element 1 relative to the release rod 21.
It should be noted that the release rod 21 may provide hydrodynamic cavitation force to the entire area of the filter surface 13, and it is understood that the release rod 21 covers the entire area of the filter surface 13 as much as possible, but if limited by installation, the release rod 21 may be slightly reduced in size to meet the installation requirements.
The hydrodynamic cavitation device 2 may be at least one of an ultrasonic generator and a pressurizing member, and when the hydrodynamic cavitation device 2 is an ultrasonic generator, the advanced oxidation of the hydrodynamic cavitation device 2 may be performed by ultrasonic action, or the hydrodynamic cavitation device 2 may also be a pressurizing member, the water may be pressurized by the pressurizing member, the pressurizing member may be an orifice plate or a venturi tube, and hydrodynamic cavitation may be performed by passing high-pressure water through the orifice plate or high-pressure water through the venturi tube. Wherein, the release rod can be a release rod of a high-pressure water small hole, etc.
Of course, the hydrodynamic cavitation device may also provide advanced oxidation in other ways, particularly as may be desired.
The filter element 1 will be described by taking a filter cloth as an example, with reference to fig. 1 to 6. The filter element 1 is a filter disc or a rotary drum which takes filter cloth as a filter medium, a filter cavity is formed in the filter disc or the rotary drum, the hydrodynamic cavitation device 2 is positioned in the filter cavity, the suction component 3 is positioned at the outer side of the filter cavity, water is more stable and reaches the standard by adopting the synergistic effect of hydrodynamic cavitation and filtration, and the filter cloth is backwashed more thoroughly under the synergistic effect of hydrodynamic cavitation and negative pressure suction. When the filter disc or the rotary drum reaches a set backwashing condition, simultaneously opening a suction assembly 3 positioned at the outer side of the filter disc or the rotary drum and a release rod 21 positioned inside the filter disc or the rotary drum; alternatively, the release rod 21 is first activated and then the suction assembly 3 is activated. When the filter element 1 is a filter disc, two suction assemblies 3 are provided for a single filter disc, and when the filter element 1 is a drum, several suction assemblies 3 are provided according to the length of the suction assemblies 3 and the length of the drum. The hydrodynamic cavitation generated by the release rod 21 directly acts on the fiber layer of the filter cloth, the suspended matters and the flocculating agent adhered to the fiber layer of the filter cloth, and the fluid (liquid and pollutant) directly or indirectly acts under the cavitation, acceleration and direct flow generated by the hydrodynamic cavitation to desorb the suspended matters and the flocculating agent adhered to the fiber layer of the filter cloth, so that the suction acting force just collects and discharges the desorbed suspended matters and the flocculating agent out of the system, and the thorough backwashing can be completed under the lower suction action, thereby more thoroughly recovering the filtering flux of the filter cloth and saving the running cost of the filtering and backwashing device. A way and a method are found for solving the problem that the filtering and backwashing devices are frequently backwashed due to the addition of the medicament in the current sewage operation.
Wherein the suction tube 31 of the suction assembly 3 is provided with an elongated inlet 311, the inlet 311 is arranged on a unified level with the hydrodynamic cavitation device 2, and the inlet 311 is of equal length as the release rod 21.
The release rod 21 of the hydrodynamic cavitation device 2 is installed through the support 22, the support 22 is of a hollow structure, a power supply and a control circuit of the release rod 21 can be arranged in the support 22, and the support 22 can extend out through the filtering pipe 14 and be installed in a hoisting mode, so that the hydrodynamic cavitation device is simple in structure and convenient to install.
The embodiment of the invention discloses a filtering and backwashing device, which is a device for the synergistic effect of the advanced oxidization of hydrodynamic cavitation and the filtering and backwashing. The filtering and backwashing device can have two starting modes, and when the device is only used for backwashing, the hydrodynamic cavitation device is started when the device needs backwashing; the other is that the hydrodynamic cavitation device is always started, and is started in a low-power mode during filtering to generate a high-level oxidation effect of hydrodynamic cavitation, so that organic matters in the discharged water are further oxidized and reduced; when the back washing machine is started in a high-power mode, the back washing machine is further cooperated with the back washing machine, so that the back washing is more thorough. That is, an advanced oxidation that serves as hydrodynamic cavitation during filtration; the power is regulated up during backwashing, the dual functions of backwashing and filtering are achieved, the low power and the high power are the relative concepts, and specific power data can be set according to actual needs.
The above embodiments are only for illustrating the present invention, and are not limiting of the present invention. While the invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and it is intended to be covered by the scope of the claims of the present invention.
Claims (2)
1. A filtration and backwash device comprising:
the filter piece is used for forming a filter cavity and comprises a first filter cloth and a second filter cloth which are arranged on opposite sides of the filter cavity, and the surfaces of the first filter cloth and the second filter cloth, which are opposite to the filter cavity, are filter surfaces;
the hydrodynamic cavitation device is positioned in the filter element and comprises a pressure piece, and water is pressurized by the pressure piece;
The suction assembly comprises a suction pump and a suction pipe communicated with the suction pump, an inlet of the suction pipe faces to a filtering surface of the filtering piece and is clung to the filtering surface, two ends of the inlet respectively correspond to two ends of the radius of the filtering surface, the inlet of the suction pipe and the hydrodynamic cavitation device are arranged on the same horizontal line, and when the filtering piece needs backwashing, the hydrodynamic cavitation device is started while the suction pump is started; the inlet extends radially of the filter face;
The hydrodynamic cavitation device is positioned in the filter cavity and comprises a release rod, the filter piece is rotationally connected with the release rod, two ends of the release rod respectively correspond to two ends of the radius of the filter surface, and the release rod extends along the radial direction of the filter surface; the release rod is a release rod with a high-pressure water small hole;
The filter piece is connected with a filtering pipe which is communicated with the filter cavity; the first filter cloth and the second filter cloth are both connected with the filtering pipe, a bracket is arranged in the filtering pipe, and the bracket is connected with the hydrodynamic cavitation device;
The filter element is rotatably connected with the suction pipe, the filter element rotates along the axial direction, the suction pipe is kept fixed, and the inlet of the suction pipe covers the whole area of the filter surface in the rotation process of the filter element; the length of the inlet of the suction pipe is equal to that of the release rod, the inlet of the suction pipe sucks the whole area of the filtering surface, and the release rod provides hydrodynamic cavitation force for the whole area of the filtering surface.
2. The filtration and backwash device of claim 1 wherein the filter surface is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6217782B1 (en) * | 1996-10-17 | 2001-04-17 | Outokumpu Oyj | Combined ultrasonic cleaning and washing of filter disks |
| CN101219300A (en) * | 2007-09-28 | 2008-07-16 | 浦华控股有限公司 | Fibre turntable filter chamber for sewage water depth-type filtration process |
| CN101279203A (en) * | 2008-01-17 | 2008-10-08 | 南京大学 | A method for cleaning biological fouling on microfiltration flat membrane by ultrasonic wave |
| CN202446885U (en) * | 2012-01-18 | 2012-09-26 | 吴风池 | Ultrasonic filter cloth cleaning device |
| CN202844722U (en) * | 2012-08-29 | 2013-04-03 | 江苏兴邦环保工程科技有限公司 | Cleaning device of rotating disc filter |
| CN202942715U (en) * | 2012-10-15 | 2013-05-22 | 北京新源国能科技有限公司 | Filter disc backwashing device and filter disc filtering equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101177369B1 (en) * | 2012-04-26 | 2012-08-27 | (주) 에이앤티 | Backwashing suction apparatus and the fabric filtration apparatus using the same |
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- 2022-06-30 CN CN202210778601.XA patent/CN115108659B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6217782B1 (en) * | 1996-10-17 | 2001-04-17 | Outokumpu Oyj | Combined ultrasonic cleaning and washing of filter disks |
| CN101219300A (en) * | 2007-09-28 | 2008-07-16 | 浦华控股有限公司 | Fibre turntable filter chamber for sewage water depth-type filtration process |
| CN101279203A (en) * | 2008-01-17 | 2008-10-08 | 南京大学 | A method for cleaning biological fouling on microfiltration flat membrane by ultrasonic wave |
| CN202446885U (en) * | 2012-01-18 | 2012-09-26 | 吴风池 | Ultrasonic filter cloth cleaning device |
| CN202844722U (en) * | 2012-08-29 | 2013-04-03 | 江苏兴邦环保工程科技有限公司 | Cleaning device of rotating disc filter |
| CN202942715U (en) * | 2012-10-15 | 2013-05-22 | 北京新源国能科技有限公司 | Filter disc backwashing device and filter disc filtering equipment |
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