CN112824329B - Water and gas distribution device for modular filter tank and system and application method thereof - Google Patents
Water and gas distribution device for modular filter tank and system and application method thereof Download PDFInfo
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- CN112824329B CN112824329B CN201911140436.XA CN201911140436A CN112824329B CN 112824329 B CN112824329 B CN 112824329B CN 201911140436 A CN201911140436 A CN 201911140436A CN 112824329 B CN112824329 B CN 112824329B
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/481—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/004—Seals, connections
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
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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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- 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
- C02F2303/16—Regeneration of sorbents, filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a water and gas distribution device of a modular filter pool, a system and an application method thereof, wherein the device comprises a filter brick body and a water and gas distribution assembly, two cavities are arranged in the filter brick body, the bottom of the filter brick body is respectively provided with a flow control gap opposite to the two cavities, the bottom of the filter brick body is provided with a water flow channel, the water and gas distribution assembly comprises a head body and a rod body, the interior of the head body is divided into a gas distribution area positioned on the upper layer and a water distribution area positioned on the lower layer through a partition plate, and the rod body comprises a water distribution rod extending to the gas distribution area and a gas distribution rod extending to the gas distribution area through the partition plate. The water and gas distribution uniformity of the invention reaches more than 90%, and compared with the conventional water and gas distribution device, the back washing energy consumption is reduced by 30-40%. And the water and gas distribution device and the system can be modularly designed and assembled according to different water treatment requirement environments, and are easy to popularize and apply.
Description
Technical Field
The invention relates to the field of water treatment equipment, in particular to a water and air distribution device of a modular filter, a system and an application method thereof.
Background
The filtration or biological filtration is a core process unit for water supply and sewage treatment, and mainly comprises a denitrification biological filter, an aeration biological filter, an ozone-activated carbon biological filter, a common rapid filter, a siphon filter and the like. The backwashing is a core link of a filtering or biological filtering process and is a foundation for ensuring the treatment efficiency and long-acting stable operation of a water treatment structure, and the most important component in the backwashing process is a water and gas distribution device and a system, so that the development of the water and gas distribution device and the system which are uniform in water and gas distribution, energy-saving and consumption-reducing is always a great demand of the filtering or biological filtering process.
The Chinese patent CN 108328729A discloses an S-shaped filter brick water distribution system, which adopts a secondary water distribution cavity structure, and backflushing air water is secondarily distributed in the filter bricks, so that the water distribution and the air distribution are more uniform, but the structure of the secondary distribution cavity is more complex, and the secondary distribution of the air water leads to the increase of energy consumption. Chinese patent CN 109231422A discloses a novel T-shaped filter brick and a method for installing and constructing the same, wherein the T-shaped filter brick is connected by adopting a tenon-and-mortise structure, the two sides of the filter brick are zigzag dense gaps, and the increase of the gaps is beneficial to the uniformity of water distribution and air distribution, but leads to the fact that an air distribution system needs more air outlets, increases the back flush air quantity and leads to the increase of back flush energy consumption.
Therefore, the invention provides a novel water and gas distribution device and a novel water and gas distribution system for realizing uniform water and gas distribution and keeping lower back-washing energy consumption.
Disclosure of Invention
Aiming at the technical problems, the invention provides a water and air distribution device of a modular filter pool, a system and an application method thereof, aiming at improving the current situation that the air distribution uniformity and the backwashing energy consumption of the existing water and air distribution device are difficult to be considered, and also keeping higher backwashing efficiency.
The technical scheme of the invention is as follows: the utility model provides a modularization filtering pond water distribution gas distribution device, includes filter brick body and water distribution gas distribution subassembly, and the filter brick body is the cuboid structure, and the shell of filter brick body adopts the HDPE material, and inside packing has the concrete, and the bulk strength is high, and durable not fragile. Two cavities which are symmetrically distributed about the central line of the filter brick body in the length direction are arranged in the filter brick body, and a permanent magnet material layer is arranged on the inner side wall of each cavity; the bottom parts of the two sides of the filter brick body along the length direction are respectively provided with a flow control gap facing the middle parts of the two cavities, so that the cavities are communicated with the outside; the bottom of the filter brick body is provided with a water flow channel, the water flow channel penetrates through the filter brick body along the length direction and is communicated with the two cavities, and two sides of the filter brick body are provided with a fixing bulge and a fixing insertion hole which are connected with adjacent filter bricks, and a limiting block which is used for separating the adjacent two filter bricks into slits with equal width; the top of the filter brick body is provided with a slot cover, the inside of the slot is provided with a counterweight filler, such as concrete, the inside of the slot is provided with a longitudinal through pipe communicated to the top of the cavity, and the longitudinal through pipe is internally provided with a pull rod used for connecting a water distribution and air distribution component;
the water and gas distribution assembly comprises a head body and a rod body, wherein the head body is of a spherical structure, the interior of the head body is divided into a gas distribution area positioned on the upper layer and a water distribution area positioned on the lower layer through a partition plate, a plurality of gas distribution holes are formed in the side wall of the head body of the gas distribution area, the rod body comprises a water distribution rod extending to the water distribution area and a gas distribution rod extending to the gas distribution area through the partition plate, the upper end and the lower end of the head body are respectively connected with the tail end of a pull rod, and the upper end of the water distribution rod is in rotating connection with a small bearing and a large bearing, so that the head body can rotate to distribute water and gas under the action of airflow or water impact force, plastic bearings can be selected for the small bearing and the large bearing, and polyether ether ketone (PEEK) is preferred.
Furthermore, the permanent magnet material layer is provided with a plurality of rubidium magnet sheets, fixing holes are formed in the middle of the rubidium magnet sheets and used for enabling the rubidium magnet sheets to penetrate through bolts on the inner side wall of the cavity and to be fixed through nuts, glue is used for reinforcing the rubidium magnet sheets and the inner side wall of the cavity, and the glue can be plastic magnet sticking glue YH-896. A magnetic field is formed in the cavity area by utilizing the rubidium magnet sheets with strong magnetism, so that tiny water flow ejected by backwashing can be magnetized and disturbed to form high-oxygen water, and the backwashing efficiency can be greatly improved.
Further, the pull rod can vertically run through intraductal pulling from top to bottom and can dismantle, and the upper end of pull rod is the square connector, and square connector joint is in the inboard square spacing inslot of capping for inject the pull rod and rotate. The pull rod is convenient for the installation and the positioning of the water and gas distribution component, and prevents the water and gas distribution component from swinging under the impulsive force in the back flushing process, thereby reducing the uniformity of water and gas distribution.
Further, the gas distribution rod is sleeved inside the water distribution rod in a penetrating mode, the top of the gas distribution rod is higher than the water distribution rod, a water outlet and a gas outlet are formed in the two sides of the top of the water distribution rod and the top of the gas distribution rod respectively, an external thread layer is arranged on the outer side of the bottom of the water distribution rod, and an oxygen-enriched filtering screen is arranged at the bottom of the water distribution rod. Through the nested design of the air distribution rod and the water distribution rod, the water distribution and air distribution component can achieve a multi-purpose function, and can perform air distribution and water distribution more simultaneously.
Furthermore, the oxygen-enriched filtering screen is formed by weaving steel fibers and oxygen-enriched negative ion fibers according to a three-dimensional weaving method, wherein the number ratio of the number of the steel fibers to the number of the oxygen-enriched negative ion fibers is 1:3, and the diameter of the pore diameter of the oxygen-enriched filtering screen is 1-1.5 mm. Steel fiber provides the skeleton support, and oxygen-enriched anion fiber can carry out preliminary oxygen boosting to backwash water, can intercept debris and prevent that the water distribution hole from blockking up, and the oxygen content that can also increase the backwash improves backwash efficiency, and in addition, too big aperture is unfavorable for the debris interception, and the aperture of undersize then causes the hindrance to intaking easily.
Furthermore, the outer sides of each air distribution hole and each water distribution hole are provided with a hemispherical baffle for changing the direction of water flow or air flow, and the opening directions of the hemispherical baffles are uniform. The hemispherical baffle can make the air flow ejected from the air distribution holes and the water flow ejected from the water distribution holes deviate to form power, so that the rotation of the driving head body is facilitated, and the air flow and the water flow are distributed more uniformly by utilizing the rotation inertia.
Furthermore, the sum of the depth of the fixed jack and the protruding length of the limiting block is greater than the length of the fixed protrusion. The slit is formed when the adjacent filter bricks are spliced, and the diffusion of water flow and air flow is facilitated.
The invention also provides a system for distributing water and gas by applying the device, which comprises a bearing plate arranged at the bottom of a water treatment structure, wherein the center of the bearing plate corresponding to each cavity is provided with an embedded sleeve, the embedded sleeve is used for being connected with the tail end of a water distribution rod through threads, the area below the bearing plate is a water distribution area, the water distribution area is connected with an external water inlet pipe, the water inlet pipe is provided with a back flush water inlet valve, a gas distribution pipe is distributed in the water distribution area, a gas distribution branch pipe is sleeved in the tail end of the gas distribution rod, the gas distribution pipe is connected with the external gas inlet pipe, and the gas inlet pipe is provided with a back flush air inlet valve. When backwashing is carried out, a backwashing water inlet valve on the water inlet pipe is opened, backwashing water is introduced into the water distribution area, water is sent into the water distribution area through the water distribution rod by virtue of a pre-embedded sleeve on a bearing plate above the water distribution area, and finally reaches the cavity through the water distribution holes to distribute water. The water treatment structure comprises but is not limited to a denitrification biological filter, an aeration biological filter, an ozone-activated carbon biological filter, a common fast filter, a siphon filter and the like.
The invention also aims to provide a method for water distribution and gas distribution by using the system, which comprises the following steps:
s1: calculating and selecting the size of a standard water treatment structure as L (length) multiplied by B (width) with the unit of mm according to the sewage treatment scale, the inlet water quality and the outlet water discharge requirement; the size of the water and gas distribution device is l (length) multiplied by b (width), and the unit is mm;
s2: determining the required number N of the water and gas distribution devices according to the size of the standard water treatment structure in the step S1, wherein N is (L/(L × 1.05)) × (B/(B × 1.05)), and 1.05 is an amplification factor;
s3: installing a bearing plate at the bottom of a standard water treatment structure, arranging a water distribution branch pipe in a water distribution area below the bearing plate, marking the position of each gas distribution branch pipe corresponding to the bearing plate, installing an embedded sleeve according to the corresponding position, enabling the gas distribution branch pipe to upwards penetrate through the embedded sleeve, sleeving a gas distribution rod on the gas distribution branch pipe, connecting the water distribution rod with the embedded sleeve through threads, then enabling a pull rod to penetrate through a longitudinal through pipe and cover a groove cover for fixing, and completing the installation of a filter brick body;
s4: taking the first filter brick body which is completely installed as a reference, connecting two adjacent filter brick bodies with each other through a fixing bulge and a fixing jack along the width direction of the standard water treatment structure, determining a first row of filter brick bodies through the position of an installed embedded sleeve, and continuously installing the filter brick bodies along the length direction of the standard water treatment structure by taking the first row of filter brick bodies as the reference until the bottom of the whole standard water treatment structure is filled;
s5: carrying out an air distribution uniformity test, wherein backwash water enters a water distribution area through a water inlet pipe, then is introduced into the water distribution area through a water distribution rod, and then is uniformly sprayed out from a plurality of water distribution holes on the side wall of a head body;
s6: a modular water treatment structure is formed by the standard water treatment structure, the water and gas distribution device and the back-flushing water and gas distribution system in the steps S1, S2 and S3.
The beneficial effects of the invention are as follows:
(1) the periphery of the water and gas distribution device is closed, only flow control gaps are reserved, the backwashing gas distribution adopts the water and gas distribution assembly which extends into the cavity in the device from the bottom, the gas and water distribution is more uniform, the gaps among the devices are reduced, the area of a dead corner area under three working conditions of gas washing, water washing and gas and water combined washing is reduced, the uniformity of the water and gas distribution is more than 90 percent, and compared with the conventional water and gas distribution device, the backwashing energy consumption is reduced by 30 to 40 percent.
(2) The water and gas distribution device and the system of the invention arrange the gas distribution pipe and the water distribution area together, and the water and gas distribution component of the invention can be detachably connected with the filter brick body through the pull rod, thus being convenient for installation and replacement, reducing the difficulty of later maintenance and replacement and having low use and maintenance cost.
(3) The water and gas distributing assembly has double functions of water distribution and gas distribution, the head body of the water and gas distributing assembly is rotatably connected between the rod body and the pull rod through the bearing, and in addition, the gas distributing holes and the water distributing holes on the outer side wall of the head body are provided with hemispherical baffles with uniform opening directions, so that airflow emitted by the gas distributing holes and water flow emitted by the water distributing holes are deflected to form power, the rotation of the head body is favorably driven, and the airflow and the water flow are distributed more uniformly by utilizing the rotating inertia.
(4) The rubidium magnet sheets with strong magnetism are arranged on the inner side wall of the cavity and used for forming a magnetic field in the cavity area, so that tiny water flow ejected by backwashing can be magnetized and disturbed to form high-oxygen water, and the backwashing efficiency can be improved by about 23% under the same condition.
(5) The water and gas distribution device and the system can be modularly designed and assembled according to different water treatment requirement environments, and are easy to popularize and apply.
Drawings
FIG. 1 is a schematic perspective view of a water and gas distribution device according to the present invention;
FIG. 2 is a front view of the water and gas distribution device of the present invention;
FIG. 3 is a left side view of the water and gas distribution device of the present invention;
FIG. 4 is a schematic diagram of the left-view internal structure of the water and gas distribution device of the present invention;
fig. 5 is a schematic view of the structure and installation of rubidium magnet sheet according to the invention;
FIG. 6 is a schematic structural diagram of a water and gas distribution system according to the present invention;
FIG. 7 is a schematic enlarged view of a part of the water and gas distribution system of the present invention;
FIG. 8 is a schematic structural diagram of a water and gas distribution assembly according to the present invention;
FIG. 9 is a schematic view of the external structure of the head body with the hemispherical baffle according to the present invention;
FIG. 10 is a schematic perspective view of the tie rod of the present invention;
FIG. 11 shows the dead angle area ratio of the water and gas distribution device under three backwash conditions simulated by FLUENT software;
FIG. 12 shows that the novel water and gas distribution device of the invention is 20m3/(m2H) pixel map occupied by backwash bubbles under air backwash;
FIG. 13 shows a conventional water and gas distribution device at 20m3/(m2H) pixel map occupied by backwash bubbles under air backwash;
FIG. 14 shows that the water and gas distribution device of the present invention and the conventional water and gas distribution device are 20m3/(m2H) pixel contrast histogram of backwash bubbles under air backwash;
FIG. 15 shows that the novel water and gas distribution device of the invention is 25m3/(m2H) pixel map occupied by backwash bubbles under air backwash;
FIG. 16 shows a conventional water and gas distribution device at 25m3/(m2H) pixel map occupied by backwash bubbles under air backwash;
FIG. 17 shows that the water and gas distribution device of the present invention and the conventional water and gas distribution device are 25m3/(m2H) pixel contrast histogram of backwash bubbles under air backwash;
FIG. 18 shows that the novel water and gas distribution device of the invention is 30m3/(m2H) pixel map occupied by backwash bubbles under air backwash;
FIG. 19 shows a conventional water and gas distribution device at 30m3/(m2H) pixel map occupied by backwash bubbles under air backwash;
FIG. 20 shows that the water and gas distribution device of the present invention and the conventional water and gas distribution device are 30m3/(m2H) pixel-by-pixel histogram of backwash bubbles under air backwash.
Wherein, 1-filter brick body, 11-cavity, 12-permanent magnetic material layer, 121-rubidium magnet sheet, 122-fixed hole, 123-bolt, 124-nut, 13-flow control gap, 14-water flow channel, 15-fixed bulge, 16-fixed jack, 17-limited block, 18-open slot, 19-slot cover, 110-longitudinal through pipe, 111-draw bar, 112-square connector, 113-square limited slot, 2-water distribution and gas distribution component, 21-head body, 22-rod body, 23-division board, 24-gas distribution area, 25-water distribution area, 26-gas distribution hole, 27-water distribution hole, 28-water distribution rod, 29-gas distribution rod, 210 a-small bearing, 210 b-large bearing, 211-a water outlet, 212-a gas outlet, 213-an oxygen-enriched filtering screen, 214-a hemispherical baffle, 3-the bottom of a water treatment structure, 31-a supporting plate, 32-a pre-buried sleeve, 33-a water distribution area, 34-a water inlet pipe, 35-a back-flushing water inlet valve, 36-a gas distribution pipe, 37-a gas inlet pipe, 38-a back-flushing gas inlet valve and 39-a gas distribution branch pipe.
Detailed Description
Example 1
The embodiment provides a modularization filtering pond water distribution gas distribution device, as shown in fig. 2 and 3, including filter brick body 1 and water distribution gas distribution subassembly 2, filter brick body 1 is the cuboid structure, and long 400mm, wide 200mm, high 200mm, filter brick body 1's outward appearance schematic diagram is as shown in fig. 1, and filter brick body 1's shell adopts the HDPE material, and inside packing has the concrete, and bulk strength is high, and is durable not fragile. As shown in fig. 2, two cavities 11 symmetrically distributed about the centerline of the filter block body 1 in the length direction are arranged in the filter block body 1; the bottom parts of the two sides of the filter brick body 1 along the length direction are respectively provided with a flow control gap 13 which is opposite to the middle parts of the two cavities 11, so that the cavities 11 are communicated with the outside; the bottom of the filter brick body 1 is provided with a water flow channel 14, the water flow channel 14 penetrates through the filter brick body 1 and is communicated with the two cavities 11 along the length direction, two sides of the filter brick body 1 are provided with a fixed protrusion 15 and a fixed insertion hole 16 which are connected with adjacent filter bricks, and a limiting block 17 which is used for separating the adjacent two filter bricks into slits with equal width is arranged, wherein the sum of the depth of the fixed insertion hole 16 and the protrusion length of the limiting block 17 is greater than the length of the fixed protrusion 15. The slit is formed when the adjacent filter bricks are spliced, the width of the slit is 7mm, and the diffusion of water flow and air flow is facilitated. As shown in fig. 4, the top of the filter brick body 1 is provided with a slot 18 with a slot cover 19, the inside of the slot 18 is provided with a counterweight filler, such as concrete, the inside of the slot 18 is provided with a longitudinal through pipe 110 communicated to the top of the cavity 11, and the inside of the longitudinal through pipe 110 is provided with a pull rod 111 for connecting the water and air distribution assembly 2; as shown in fig. 4 and 10, the pull rod 111 can be pulled up and down in the longitudinal through pipe 110 and can be detached, the upper end of the pull rod 111 is a square connector 112, and the square connector 112 is clamped in a square limiting groove 113 on the inner side of the groove cover 19 to limit the rotation of the pull rod 111. The pull rod 111 is used for facilitating the installation and positioning of the water and gas distribution component 2, and preventing the component from swinging under the impulsive force of the backwashing process, thereby reducing the uniformity of water and gas distribution.
As shown in fig. 8, the water and air distributing assembly 2 includes a head body 21 and a rod body 22, the head body 21 is of a spherical structure, the interior of the head body 21 is divided into an air distributing region 24 located at an upper layer and a water distributing region 25 located at a lower layer by a partition 23, a plurality of air distributing holes 26 are formed in the side wall of the head body 21 of the air distributing region 24, a plurality of water distributing holes 27 are formed in the side wall of the head body 21 of the water distributing region 25, the rod body 22 includes a water distributing rod 28 extending to the water distributing region 25 and an air distributing rod 29 extending to the air distributing region 24 through the partition 23, the upper end and the lower end of the head body 21 are rotatably connected with the end of the pull rod 111 and the upper end of the water distributing rod 28 through a small bearing 210a and a large bearing 210b, so that the head body 21 can perform rotating and distributed water and air distribution under the impact force of air flow, the small bearing 210a and the large bearing 210b can both select plastic bearings, the material is preferably polyether ether ketone (PEEK), and has excellent mechanical properties, Good self-lubricating property and corrosion resistance. The air distribution rod 29 is sleeved inside the water distribution rod 28 in a penetrating manner, the top of the air distribution rod 29 is higher than the water distribution rod 28, two sides of the tops of the water distribution rod 28 and the air distribution rod 29 are respectively provided with a water outlet 211 and an air outlet 212, and the outer side of the bottom of the water distribution rod 28 is provided with an external thread layer. Through the nested design of the air distribution rods 29 and 28, the water and air distribution component 2 can achieve a multi-purpose function, and can perform air distribution and water distribution simultaneously.
The invention also provides a system for distributing water and gas by applying the device, which comprises a supporting plate 31 arranged at the bottom 3 of a water treatment structure, wherein an embedded sleeve 32 is arranged on the supporting plate 31 corresponding to the central position of each cavity 11, the embedded sleeve 32 is used for being connected with the tail end of a water distribution rod 28 through threads, a water distribution area 33 is arranged in the lower area of the supporting plate 31, the water distribution area 33 is connected with an external water inlet pipe 34, a back-flushing water inlet valve 35 is arranged on the water inlet pipe 34, a gas distribution pipe 36 is arranged in the water distribution area 33, a gas distribution branch pipe 39 is sleeved in the tail end of the gas distribution rod 29, the gas distribution pipe 36 is connected with an external gas inlet pipe 37, and a back-flushing air inlet valve 38 is arranged on the gas inlet pipe 37. During backwashing, a backwashing water inlet valve 35 on a water inlet pipe 34 is opened, backwashing water is introduced into a water distribution area 33, water is sent into a water distribution area 25 through a water distribution rod 28 by an embedded sleeve 32 on a supporting plate 31 above the water distribution area 33, and finally reaches a cavity 11 through a water distribution hole 27 for water distribution, and during backwashing by using air, a backwashing air inlet valve 38 on an air inlet pipe 37 is opened, air is introduced into an air distribution pipe 36, then is sent into an air distribution area 24 through an air distribution rod 29 by an air distribution branch pipe 39, and finally reaches the cavity 11 through the air distribution hole 26 for air distribution, and water distribution and air distribution can be carried out simultaneously.
The system of the embodiment is applied to laboratory backwashing performance tests, and the using method of the embodiment comprises the following steps:
(1) according to the cell body size L (length) multiplied by B (width) of the laboratory test device, the required number N of the water distribution and air distribution devices is multiplied by (L/(L multiplied by 1.05)) × (B/(B multiplied by 1.05)) × (0.84/(0.4 multiplied by 1.05)) × (0.63/(0.2 multiplied by 1.05)) × (6 blocks);
(2) according to the determined arrangement of the water and gas distribution device, firstly, making and installing water distribution branch pipes 36, installing a bearing plate 31 at the bottom 3 of a standard water treatment structure, arranging the water distribution branch pipes 36 in a water distribution area 33 below the bearing plate 31, marking the position of each gas distribution branch pipe 39 corresponding to the bearing plate 31, opening holes according to the corresponding position to install an embedded sleeve 32, enabling the gas distribution branch pipes 39 to upwards penetrate through the embedded sleeve 32, sleeving gas distribution rods 29 on the gas distribution branch pipes 39, connecting the water distribution rods 28 with the embedded sleeve 32 through threads, then enabling pull rods 111 to penetrate through longitudinal through pipes 110 and cover a groove cover 19 for fixing, and completing the installation of a filter brick body 1;
(3) splicing the filter brick bodies 1 according to the arrangement mode of 2 blocks in each longitudinal row and 3 blocks in each transverse row, taking the first filter brick body 1 which is installed as a reference, connecting the adjacent two filter brick bodies 1 with each other through a fixing bulge 15 and a fixing jack 16 along the width direction of a standard water treatment structure, determining the first row of filter brick bodies 1 through the position of an installed embedded sleeve 32, and continuously installing the filter brick bodies 1 along the length direction of the standard water treatment structure by taking the position as the reference until the bottom 3 of the whole standard water treatment structure is filled; and paving cobblestones with the layer height of 2cm and the grain diameter of 30mm, cobblestones with the layer height of 3cm and the grain diameter of 12mm, cobblestones with the layer height of 3cm and the grain diameter of 6mm and quartz sand with the layer height of 12cm and the grain diameter of 4mm above the water and gas distribution device in sequence.
(4) The distribution uniformity test is carried out, backwash water enters a distribution area 33 through a water inlet pipe 34, then the backwash water is introduced into a water distribution area 25 through a water distribution rod 28 and then is uniformly sprayed out from a plurality of water distribution holes 27 on the side wall of a head body 21, similarly, backwash gas is introduced from a gas distribution pipe 36, then the backwash water enters a gas distribution area 24 through a gas distribution rod 29 and is uniformly sprayed out from a plurality of gas distribution holes 26 on the side wall of the head body 21, the backwash water is sprayed out, flows through a permanent magnetic material layer 12, is subjected to magnetic activation and is mixed with backwash gas in a cavity 11, flows into a slit between filter brick bodies 1 from a flow control gap 13, finally flows out upwards, and enters a standard water treatment structure for gas-water backwash, so as to check the water distribution, backwash effect and gas tightness of the system;
(5) is selected from 20m3/(m2·h)、25m3/(m2·h)、30m3/(m2H) three air-washing strengths, comparing the air-washing efficiencies of the conventional water-distributing air-distributing device and the novel water-distributing air-distributing device (i.e. the back-washing energy consumption under the same air-washing efficiency), taking a picture of the bubbles in the selected specific square region in the back-washing test process, analyzing the total area of the bubbles in the specific square region through Image J software, and quantifying the air-washing effect by the number of pixels occupied by the bubbles in the picture, as shown in the results of fig. 12-20, compared with the conventional water-distributing air-distributing device, the air-distributing device of the embodiment has the air-washing efficiency improved by 18% -37%, that is, the back-washing energy consumption of the novel water-distributing air-distributing device can be correspondingly reduced by 18% -37% under the same air-washing efficiency.
Example 2
This example is substantially the same as example 1, except that: as shown in fig. 4 and 5, the permanent magnet material layer 12 is disposed on the inner side wall of the cavity 11, the permanent magnet material layer 12 is formed by a plurality of rubidium magnet pieces 121, a fixing hole 122 is disposed in the middle of each rubidium magnet piece 121, and is used for penetrating and sleeving the rubidium magnet pieces 121 on a bolt 123 on the inner side wall of the cavity 11 and fixing the rubidium magnet pieces with a nut 124, and glue is used for reinforcing the rubidium magnet pieces 121 and the inner side wall of the cavity 11, and the glue can be plastic magnet-sticking glue YH-896. The magnetic field is formed in the cavity 11 area by the ferromagnetic rubidium magnet piece 121, so that tiny water flow ejected by backwashing can be magnetized and disturbed to form high-oxygen water, and the backwashing efficiency can be greatly improved.
The water and gas distribution device and the system of the embodiment are applied to the denitrification biofilter of the town sewage treatment plant of 1 ten thousand tons/day
The using method of the embodiment is different from the embodiment 1 in the steps:
(1) the following parameters are obtained according to the sewage treatment scale, the inlet water quality and the outlet water discharge requirement: the denitrification biological filter with the sewage treatment scale of 1 ten thousand tons/day has 20mg/L of total nitrogen of inlet water and 5mg/L of total nitrogen of outlet water.
(2) Determining the size L (length) multiplied by B (width) of a standard denitrification biological filter according to the quality of inlet water, the discharge requirement of outlet water and the sewage treatment scale, wherein the size L (length) multiplied by B (width) is 15.12m multiplied by 2.52m, and the number N of the required water and gas distribution devices is (L/(L multiplied by 1.05)) × (B/(B multiplied by 1.05)) × (15.12/(0.4 multiplied by 1.05)) × (2.52/(0.2 multiplied by 1.05)) × (432 blocks;
through the test of the backwashing system, the water and gas distribution uniformity of the novel water and gas distribution device reaches 92 percent, and the energy consumption of the backwashing system is reduced by 38 percent.
Example 3
This example is substantially the same as example 2, except that: as shown in fig. 8, an oxygen-rich filtering screen 213 is disposed at the bottom of the water distribution rod 28, and further, the oxygen-rich filtering screen 213 is formed by weaving steel fibers and oxygen-rich anion fibers according to a three-dimensional weaving method, wherein the number ratio of the number of the steel fibers to the number of the oxygen-rich anion fibers is 1:3, and the diameter of the aperture of the oxygen-rich filtering screen 213 is 1.2 mm. The steel fiber provides the skeleton support, and oxygen-enriched anion fiber can carry out preliminary oxygen boosting to backwash water, can intercept debris and prevent that water distribution hole 27 from blockking up, and the oxygen content that can also increase the backwash improves backwash efficiency, and in addition, too big aperture is unfavorable for the debris interception, and the aperture of undersize then causes the hindrance to intaking easily.
The water and gas distribution device and the system are applied to the denitrification biological filter of a comprehensive sewage treatment plant in a chemical industrial park of 2 ten thousand tons/day.
The using method of the embodiment is different from the embodiment 2 in the steps:
(1) the following parameters are obtained according to the sewage treatment scale, the inlet water quality and the outlet water discharge requirement: 2 ten thousand tons per day of the denitrification biological filter with the sewage treatment scale has the total nitrogen of 30mg/L of inlet water and 10mg/L of outlet water.
(2) The size L (length) multiplied by B (width) of the standard denitrification biological filter is determined to be 15.12m multiplied by 2.52m according to the quality of inlet water, the discharge requirement of outlet water and the sewage treatment scale, and the number N of the required water and gas distribution devices is (L/(L multiplied by 1.05)) × (B/(B multiplied by 1.05)) × (15.12/(0.4 multiplied by 1.05)) × (2.52/(0.2 multiplied by 1.05)) × (432 blocks).
Through the test of the back flushing system, the uniformity of water distribution and air distribution of the novel water distribution and air distribution device reaches 93 percent, and the energy consumption of the back flushing system is reduced by 40 percent.
Example 4
This example is substantially the same as example 3, except that: as shown in fig. 9, a hemispherical baffle 214 for changing the direction of water flow or air flow is provided outside each of the air distribution holes 26 and the air distribution holes 27, and the opening direction of each hemispherical baffle 214 is uniform. The hemispherical baffle 214 can make the air flow ejected from the air distribution holes 26 and the water flow ejected from the water distribution holes 27 deviate to form power, which is beneficial to the rotation of the driving head body 21 and makes the air flow and the water flow distributed more uniformly by utilizing the inertia of rotation.
The water and gas distribution device and the system are applied to the denitrification biological filter of a town sewage treatment plant of 5 ten thousand tons/day.
The using method of the embodiment is different from the embodiment 3 in the steps:
(1) the following parameters are obtained according to the sewage treatment scale, the inlet water quality and the outlet water discharge requirement: the denitrification biological filter with the sewage treatment scale of 5 ten thousand tons/day has 20mg/L of total nitrogen of inlet water and 10mg/L of total nitrogen of outlet water.
(2) The size L (length) multiplied by B (width) of the standard denitrification biological filter is determined to be 30.24m multiplied by 3.78m according to the quality of inlet water, the discharge requirement of outlet water and the sewage treatment scale, and the number N of the required water and gas distribution devices is (L/(L multiplied by 1.05)) × (B/(B multiplied by 1.05)) × (30.24/(0.4 multiplied by 1.05)) × (3.78/(0.2 multiplied by 1.05)) × (1296 blocks.
Through the test of the backwashing system, the water and gas distribution uniformity of the novel water and gas distribution device reaches 95 percent, and the energy consumption of the backwashing system is reduced by 42 percent.
Claims (3)
1. The water and gas distribution device for the modular filter chamber is characterized by comprising a filter brick body (1) and a water and gas distribution assembly (2), wherein the filter brick body (1) is of a cuboid structure, two cavities (11) which are symmetrically distributed about the central line of the length direction of the filter brick body (1) are arranged in the filter brick body (1), and a permanent magnet material layer (12) is arranged on the inner side wall of each cavity (11); the bottom parts of the two sides of the filter brick body (1) along the length direction are respectively provided with a flow control gap (13) which is opposite to the middle parts of the two cavities (11) so that the cavities (11) are communicated with the outside; the bottom of the filter brick body (1) is provided with a water flow channel (14), the water flow channel (14) penetrates through the filter brick body (1) along the length direction and is communicated with the two cavities (11), two sides of the filter brick body (1) are provided with a fixing bulge (15) and a fixing insertion hole (16) which are connected with adjacent filter bricks, and a limiting block (17) which is used for separating the adjacent two filter bricks into slits with equal width; the top of the filter brick body (1) is provided with a slot (18) with a slot cover (19), a counterweight filler is arranged in the slot (18), a longitudinal through pipe (110) communicated with the top of the cavity (11) is arranged in the slot (18), and a pull rod (111) used for connecting the water distribution and air distribution component (2) is arranged in the longitudinal through pipe (110);
the water and gas distribution component (2) comprises a head body (21) and a rod body (22), the head body (21) is of a spherical structure, the interior of the head body (21) is divided into an air distribution area (24) positioned at the upper layer through a partition plate (23), and a water distribution area (25) positioned at the lower layer, a plurality of air distribution holes (26) are arranged on the side wall of the head body (21) of the air distribution area (24), a plurality of water distribution holes (27) are arranged on the side wall of the head body (21) of the water distribution area (25), the rod body (22) comprises a water distribution rod (28) extending to the water distribution area (25), and an air distribution rod (29) which penetrates through the partition plate (23) and extends to the air distribution area (24), wherein the upper end and the lower end of the head body (21) are respectively and rotatably connected with the tail end of the pull rod (111) and the upper end of the water distribution rod (28) through a small bearing (210a) and a large bearing (210b), the head body (21) can rotate to distribute water and gas under the action of airflow or water impact;
the permanent magnet material layer (12) is provided with a plurality of rubidium magnet sheets (121), a fixing hole (122) is formed in the middle of each rubidium magnet sheet (121) and used for enabling each rubidium magnet sheet (121) to penetrate through a bolt (123) on the inner side wall of the cavity (11) and be fixed through a nut (124), and meanwhile glue is used for reinforcing the rubidium magnet sheets (121) and the inner side wall of the cavity (11);
the pull rod (111) can be pulled up and down in the longitudinal through pipe (110) and can be detached, a square connector (112) is arranged at the upper end of the pull rod (111), and the square connector (112) is clamped in a square limiting groove (113) on the inner side of the groove cover (19) and used for limiting the rotation of the pull rod (111);
the air distribution rod (29) is sleeved inside the water distribution rod (28) in a penetrating manner, the top of the air distribution rod (29) is higher than the water distribution rod (28), two sides of the tops of the water distribution rod (28) and the air distribution rod (29) are respectively provided with a water outlet (211) and an air outlet (212), the outer side of the bottom of the water distribution rod (28) is provided with an external thread layer, and the bottom of the water distribution rod (28) is provided with an oxygen-enriched filtering screen (213);
the outer sides of each air distribution hole (26) and each water distribution hole (27) are provided with hemispherical baffles (214) for changing the direction of water flow or air flow, and the opening directions of the hemispherical baffles (214) are uniform;
the sum of the depth of the fixed insertion hole (16) and the protruding length of the limiting block (17) is larger than the length of the fixed protrusion (15).
2. A system for water and gas distribution by using the device of claim 1, comprising a support plate (31) placed at the bottom (3) of the water treatment structure, an embedded sleeve (32) is arranged on the bearing plate (31) corresponding to the center of each cavity (11), the embedded sleeve (32) is used for being connected with the tail end of the water distribution rod (28) through threads, the area below the bearing plate (31) is a water distribution area (33), the water distribution area (33) is connected with an external water inlet pipe (34), a back-flushing water inlet valve (35) is arranged on the water inlet pipe (34), a gas distribution pipe (36) is arranged in the water distribution area (33), a gas distribution branch pipe (39) is sleeved in the tail end of the gas distribution rod (29), the gas distribution pipe (36) is connected with an external gas inlet pipe (37), and a back-flushing gas inlet valve (38) is arranged on the gas inlet pipe (37).
3. The water and gas distribution method by using the system of claim 2, which is characterized by comprising the following steps:
s1: calculating and selecting the size of a standard water treatment structure as L (length) multiplied by B (width) with the unit of mm according to the sewage treatment scale, the inlet water quality and the outlet water discharge requirement; the size of the water and gas distribution device is l (length) multiplied by b (width), and the unit is mm;
s2: determining the required number N of the water and gas distribution devices according to the size of the standard water treatment structure in the step S1, wherein N is (L/(L × 1.05)) × (B/(B × 1.05)), and 1.05 is an amplification factor;
s3: installing a bearing plate (31) at the bottom (3) of a standard water treatment structure, arranging an air distribution pipe (36) in a water distribution area (33) below the bearing plate (31), marking the position of each air distribution branch pipe (39) corresponding to the bearing plate (31), installing an embedded sleeve (32) according to the corresponding position, enabling the air distribution branch pipes (39) to upwards penetrate through the embedded sleeve (32), sleeving the air distribution rods (29) on the air distribution branch pipes (39), connecting the water distribution rods (28) with the embedded sleeve (32) through threads, penetrating the pull rods (111) through the longitudinal through pipes (110) and covering the groove covers (19) for fixing, and completing the installation of a filter brick body (1);
s4: taking the first filter brick body (1) which is completely installed as a reference, connecting two adjacent filter brick bodies (1) with each other through a fixing bulge (15) and a fixing jack (16) along the width direction of a standard water treatment structure, determining the first row of filter brick bodies (1) through the position of an installed embedded sleeve (32), and continuously installing the filter brick bodies (1) along the length direction of the standard water treatment structure by taking the first row of filter brick bodies (1) as the reference until the bottom (3) of the whole standard water treatment structure is filled;
s5: carrying out an air distribution uniformity test, enabling backwash water to enter a water distribution area (33) through a water inlet pipe (34), then introducing the backwash water into a water distribution area (25) through a water distribution rod (28), then uniformly spraying the backwash water out of a plurality of water distribution holes (27) on the side wall of a head body (21), and in the same way, introducing backwash air from an air distribution pipe (36), then entering an air distribution area (24) through an air distribution rod (29), then uniformly spraying the backwash air out of a plurality of air distribution holes (26) on the side wall of the head body (21), enabling the backwash water to jet a trickle, carrying out magnetic activation through a permanent magnet material layer (12), mixing the backwash air with the backwash air in a cavity (11), enabling the trickle to flow into a slit between filter brick bodies (1) from a flow control gap (13), and finally flowing out upwards, and enabling the trickle to enter a standard water treatment structure for carrying out air-water backwash so as to check the water distribution and air distribution effects and backwash effects of the system;
s6: a modular water treatment structure is formed by the standard water treatment structure, the water and gas distribution device and the back-flushing water and gas distribution system in the steps S1, S2 and S3.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911140436.XA CN112824329B (en) | 2019-11-20 | 2019-11-20 | Water and gas distribution device for modular filter tank and system and application method thereof |
| JP2019215869A JP6711978B1 (en) | 2019-11-20 | 2019-11-28 | Modular filter water and air distributor, system and method of application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911140436.XA CN112824329B (en) | 2019-11-20 | 2019-11-20 | Water and gas distribution device for modular filter tank and system and application method thereof |
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| CN112824329A CN112824329A (en) | 2021-05-21 |
| CN112824329B true CN112824329B (en) | 2022-05-17 |
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| CN201911140436.XA Active CN112824329B (en) | 2019-11-20 | 2019-11-20 | Water and gas distribution device for modular filter tank and system and application method thereof |
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| CN (1) | CN112824329B (en) |
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| CN114229999B (en) * | 2021-12-29 | 2023-05-30 | 南京天人环保设备有限公司 | Renewable biological desulfurization device |
| CN115231656A (en) * | 2022-08-02 | 2022-10-25 | 中国船舶重工集团公司第七一九研究所 | Water distribution method with multiple flow rates and high adaptability |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112824329A (en) | 2021-05-21 |
| JP6711978B1 (en) | 2020-06-17 |
| JP2021079365A (en) | 2021-05-27 |
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