CN110550730A - Biological filter based on nano mesoporous filter material - Google Patents
Biological filter based on nano mesoporous filter material Download PDFInfo
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- CN110550730A CN110550730A CN201910884286.7A CN201910884286A CN110550730A CN 110550730 A CN110550730 A CN 110550730A CN 201910884286 A CN201910884286 A CN 201910884286A CN 110550730 A CN110550730 A CN 110550730A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
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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
Abstract
The invention discloses a biological filter based on nano mesoporous filter materials, which comprises a filter cylinder body, wherein the filter cylinder body is of a structure with water inlet at the lower end and water outlet at the upper end, a support frame capable of forming a rack space area at the bottom of the filter cylinder body is arranged in the filter cylinder body, a plurality of layers of bagged filter materials filled with the nano mesoporous filter materials are stacked on the support frame to form a filter material area with a dense porous structure, rows of the bagged filter materials in the filter material area are spaced at intervals and staggered from layer to layer, and a return pipeline is arranged on the filter cylinder body. The invention can lead the raw water mother liquor with mature flora to partially flow back to the inner rack empty area at the bottom of the filter cylinder body through the return pipeline, thereby improving the quantity of the flora in the filter cylinder body and further improving the purification efficiency of the raw water, and the layers of the bagged filter materials are staggered, so that the path formed by the gaps among the bagged filter materials in the filter material area for the raw water to flow through is lengthened, the detention time of the raw water in the filter material area can be prolonged, and further the purification efficiency can be further improved.
Description
Technical Field
The invention relates to the technical field of sewage treatment equipment, in particular to a biofilter based on a nano mesoporous filter material.
Background
chinese document CN107673365A (application date: 2017, 10 and 30) discloses a wave cracking method for producing modified zeolite, which is characterized in that: the vibration signal generated by high-frequency wave generator is transferred to transducing vibrator, the transducing vibrator converts the electric energy into the vibration wave energy required by signal, the vibration wave generates cavitation effect and cavitation bubble in the elastic propagation medium of modifier aqueous solution, when the cavitation bubble is closed, the instantaneous impact of over 1000 atmospheric pressures is produced, the impact is repeated for several times to discharge the impurity in natural zeolite pore channel, the zeolite lattice frame is kept unchanged, and the anion and zeolite water in the zeolite are removed by cleaning and baking to obtain the modified zeolite. In order to manufacture a filter material with higher quality, the ore with high cation exchange capacity, large specific surface area, large total pore volume and proper average pore diameter is selected as a raw material, the raw material is subjected to wave cracking through the mechanical force, electrostatic force, cavitation and free radical action of high-frequency waves in an aqueous solution, and the high-quality filter material is prepared through high-temperature treatment, so that the ion exchange capacity, the total pore volume and the average pore diameter of the high-quality filter material are further improved.
As human activities cause the ammonia nitrogen in the natural environment to rise at a speed hundreds of times and thousands of times, so that the ecology is continuously deteriorated, people try to control by various methods, and biochemical methods are superior in treatment effect. The zeolite prepared by the wave cracking method is a natural aluminosilicate ore which can generate a boiling phenomenon and can be used as the filter material with the nano mesopores. The crystal structure is a three-dimensional framework formed by connecting silicon (aluminum) oxygen tetrahedrons, and cavities and pore canals with different sizes are arranged in the framework. When sewage is treated, countless nano-scale pore channels in the filter material can physically adsorb ammonia nitrogen, heavy metal and COD particles, NH4-N can be preferentially adsorbed, a high-concentration ammonia nitrogen area with a very low C/N ratio is formed, an ideal matrix environment of short-range denitrification is completed, microorganisms can be attached to the filter material and intensively propagate to form a multi-layer vitamin membrane, dirt adsorbed by the filter material can be continuously digested through the short-range denitrification, and meanwhile, the adsorption and ion exchange functions of the filter material are repeatedly and continuously exerted, so that the filter material is continuously and automatically activated to exert a long-term effect, the filter material does not need to be replaced and frequently maintained, and the treatment cost is greatly reduced. However, mature flora cultured in the filter cylinder of the biofilter in the prior art is easy to be discharged from the water outlet of the filter cylinder, so that the purification effect is reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a biofilter based on a nano mesoporous filter material, which mainly solves the technical problems that mature flora cultured in a biofilter cylinder of the biofilter in the prior art is easy to be discharged from a water outlet of the biofilter cylinder, so that the purification effect is reduced, and the like.
In order to achieve the purpose, the invention is realized by the following technical scheme:
A biological filter based on nano-mesoporous filter materials comprises a filter cylinder body, wherein the lower part of the filter cylinder body is provided with a water inlet capable of supplying water to flow in, the upper part of the filter cylinder body is provided with a water outlet capable of supplying water to flow out so as to form a water outlet structure with water inlet at the lower end and water outlet at the upper end, the lower part of the filter cylinder body is also provided with an air inlet capable of being connected with an aerator, the filter cylinder body is internally provided with a support frame capable of forming a frame space at the bottom of the filter cylinder body, the support height of the support frame is higher than that of the air inlet, a plurality of layers of bagged filter materials filled with the nano-mesoporous filter materials are stacked on the support frame so as to form a filter material area with a dense porous structure, flora can be cultured in the filter material area, each layer of the bagged filter material in the filter material area consists of a plurality of rows of bagged filter materials which are arranged, and the filter cylinder is provided with a return pipeline which can make the raw water mother liquor containing mature flora flowing out of the filter cylinder partially return to the empty area of the inner frame at the bottom of the filter cylinder so as to improve the purification efficiency.
Furthermore, the biological filter based on the nano mesoporous filter material comprises a plurality of filter cylinder bodies which are communicated to form a multi-stage series structure.
Furthermore, the biological filter based on the nano mesoporous filter material comprises three filter cylinder bodies which are arranged in a sequentially reduced ladder shape.
Furthermore, the water outlet of the filter cylinder at the upper stage of the two adjacent filter cylinders is communicated with the water inlet of the filter cylinder at the lower stage through a pipeline, and the water inlet and the water outlet of the filter cylinder at the upper stage are respectively higher than the water inlet and the water outlet of the filter cylinder at the lower stage, so that the water flowing out of the filter cylinder at the upper stage can automatically flow into the filter cylinder at the lower stage, and further, the raw water can sequentially pass through the plurality of filter cylinders to be purified in multiple stages.
Furthermore, a certain distance is arranged between the upper layer of the filter material area in the filter tank cylinder and the water outlet at the upper part of the filter tank cylinder to form a water outlet cache area, the upper end of a return pipeline is communicated with the water outlet cache area in the filter tank cylinder, the lower end of the return pipeline is communicated with an overhead area in the filter tank cylinder, a return flow control pump is installed in the return pipeline, and the amount of raw water mother liquor returned through the return pipeline is controlled to be 10% -20% of the outflow amount of the water outlet of the filter tank cylinder through the return flow control pump.
Further, the biological filter based on the nano mesoporous filter material comprises three filter cylinder bodies which are arranged horizontally at the same height.
Furthermore, the water outlet of the filter cylinder at the upper stage of the two adjacent filter cylinders is communicated with the water inlet of the filter cylinder at the lower stage through a pipeline, and a water pump is arranged on the communicated pipeline, so that the water flowing out of the filter cylinder at the upper stage is pressurized and input into the filter cylinder at the lower stage, and the raw water can sequentially pass through the plurality of filter cylinders to be purified in multiple stages.
Furthermore, the inlet end of the backflow pipeline is connected to a pipeline connecting the water outlet of the filter tank cylinder with the water inlet of the next filter tank cylinder and is positioned behind the water pump, the outlet end of the backflow pipeline is communicated with an overhead area in the filter tank cylinder, a backflow control valve is arranged on the backflow pipeline, and the amount of the returned raw water mother liquor is controlled to be 10% -20% of the outflow of the water outlet of the filter tank cylinder through the backflow control valve.
Further, 90 degrees stagger between the bagged filter material layer in the filter material district and the layer, row and row bagged filter material between be the uneven form of staggering end to end, and the ratio of filter material district and the height in the frame dead zone in the filtering pond barrel is 3 ~ 3.5.
Further, the diameter D of the filter cylinder is 200 cm-250 cm, the height H1 of the overhead area is 40 cm-60 cm, the height H2 of the filter material area is 120 cm-210 cm, and the interval between rows of bagged filter materials on the same layer in the filter material area is 2 cm-5 cm.
The biological filter based on the nano mesoporous filter material has the following advantages:
1. The filter cylinder body can form an overhead area which is convenient for raw water to be treated to be uniformly dispersed in the filter cylinder body at the bottom of the filter cylinder body through a support frame, a plurality of layers of bagged filter materials filled with nano mesoporous filter materials are stacked on the support frame to form a filter material area with a dense porous structure, a certain amount of biological strains can be carried in the raw water to be treated, when the raw water to be treated is pressurized and input into the filter cylinder body, the biological strains can further concentrate, grow, develop and reproduce in the filter cylinder body to form a multi-level biological membrane, and ammonia nitrogen and water absorbed by the nano mesoporous filter materials physically are converted into nitrogen and water by the biological membrane, so that sewage purification is realized.
2. Each layer of bagged filter material in the filter material area consists of a plurality of rows of bagged filter materials which are arranged in parallel, a distance is arranged between the rows, and the layers are staggered, so that the layers of the bagged filter materials are staggered, the path formed by the gaps among the bagged filter materials in the filter material area for raw water to flow through is prolonged, the detention time of the raw water in the filter material area can be prolonged, and the purification efficiency can be further improved.
3. The filter cylinder is of a structure that water enters from the lower end and exits from the upper end, and the water entering and exiting structure can enable the filter cylinder to flow through and be more fully and uniformly contacted with bagged filter materials in a filter material area, so that the purification effect is further improved.
4. The invention can make the raw water mother liquor with mature flora partially flow back to the empty space in the bottom of the filter cylinder through the return pipe, further improve the quantity of flora in the filter cylinder, and further improve the purification efficiency of the raw water in the filter cylinder.
Drawings
Fig. 1 is a schematic perspective view of a filter chamber cylinder in a stepped arrangement according to a first embodiment of the present invention.
Fig. 2 is a schematic perspective view of another angle of the filter chamber cylinder in the stepped arrangement according to the first embodiment of the present invention.
FIG. 3 is a schematic view of the internal structure of the filter chamber cylinder according to the first embodiment of the present invention.
Fig. 4 is a schematic diagram of the stack of bagged filter material in the filter cylinder according to the first embodiment of the invention.
Fig. 5 is a schematic perspective view of the horizontal arrangement of the filter cartridges according to the second embodiment of the present invention.
Fig. 6 is a schematic view of another angle of the horizontal arrangement of the filter cylinders according to the second embodiment of the invention.
Fig. 7 is a schematic view of another angle of the filter chamber cylinder horizontal arrangement according to the second embodiment of the present invention.
Description of reference numerals:
1. The filter tank comprises a filter tank body, 2, an aerator, 3, a support frame, 4, bagged filter materials, 5, a backflow pipeline, 6, a water pump, 7, a water outlet control valve, 11, a water inlet, 12, a water outlet, 13, an air inlet, 14, a ventilation opening, 15, an overhead area, 16, a filter material area, 17, a water outlet cache area, 31, support legs, 32, a support net, 51, a backflow control valve, 52 and a backflow control pump.
Detailed Description
The invention is further described with reference to the following figures and examples.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example one
Referring to fig. 1 to 4, in this embodiment, a biological filter based on nano-mesoporous filter materials includes a filter cylinder 1, a water inlet 11 for water to flow in is formed at a lower portion of the filter cylinder 1, a water outlet 12 for water to flow out is formed at an upper portion of the filter cylinder 1 to form a water inlet structure at a lower end and an upper end, an air inlet 13 is further formed at a lower portion of the filter cylinder 1 to be connected to an aerator 2, a support frame 3 capable of forming a frame space 15 at a bottom of the filter cylinder 1 is disposed in the filter cylinder 1, a support height of the support frame 3 is higher than the air inlet 13, a plurality of layers of filter material bags 4 filled with nano-mesoporous filter materials are stacked on the support frame 3 to form a filter material area 16 with a dense porous structure, flora can be cultured in the filter material area 16, and each layer of filter material bags 4 in the filter material area, the rows are spaced at intervals and staggered from layer to layer, raw water to be treated can enter the filter cylinder body 1 through the water inlet 11 and sequentially passes through the framed empty area 15 and the filter material area 16 to be purified by flora, and the filter cylinder body 1 is provided with a return pipeline 5 which can make the raw water mother liquor containing mature flora flowing out of the filter cylinder body 1 partially return to the framed empty area 15 in the bottom of the filter cylinder body 1 so as to improve the purification efficiency.
In the embodiment, in the filter cylinder 1, an overhead area 15 which is convenient for raw water to be treated to be uniformly dispersed in the filter cylinder 1 can be formed at the bottom of the filter cylinder 1 through the support frame 3, a plurality of layers of bagged filter materials 4 filled with nano mesoporous filter materials are stacked on the support frame 3 to form a filter material area 16 with a dense porous structure, and the nano mesoporous filter materials in the bagged filter materials 4 can be selected from porous materials in the prior art, such as zeolite or other similar natural aluminosilicate ores with porous structures; the raw water to be treated carries a certain amount of biological strains, when the raw water to be treated is pressurized and input into the filter tank barrel body 1, the biological strains can further concentrate, grow, develop and reproduce in the filter tank barrel body to form a multi-layer biological membrane, and the ammonia nitrogen and the like physically adsorbed by the nano mesoporous filter material are converted into nitrogen and water by the biological membrane so as to realize sewage purification; the filter tank body 1 is of a structure with water inlet at the lower end and water outlet at the upper end, and the water inlet and outlet structure can enable the filter tank body 1 flowing through the filter tank body to be more fully and uniformly contacted with bagged filter materials 4 in a filter material area 16, so that the purification effect is further improved; each layer of bagged filter material 4 in the filter material area 16 consists of a plurality of rows of bagged filter materials 4 which are arranged in parallel, a distance is arranged between the rows, the layers are staggered, and the layers of the bagged filter materials 4 are staggered, so that the path formed by the gaps among the bagged filter materials 4 in the filter material area 16 for raw water to flow through is lengthened, the retention time of the raw water in the filter material area 16 can be prolonged, and the purification efficiency can be further improved; and the filter cylinder 1 is provided with a return pipeline 5 which can make the raw water mother liquor containing mature flora flowing out of the filter cylinder 1 partially return to the inner vacant area 15 at the bottom of the filter cylinder 1, because the growth and development of the flora in the filter cylinder 1 need a certain time, and the water in the filter cylinder 1 flows straight, if the return pipeline 5 is not designed on the filter cylinder 1, a considerable part of the mature flora cultured in the filter cylinder 1 can be directly discharged from the water outlet 12 of the filter cylinder 1, in the embodiment, the raw water mother liquor with the mature flora can partially return to the inner vacant area 15 at the bottom of the filter cylinder 1 through the return pipeline 5, thereby further improving the quantity of the flora in the filter cylinder 1 and further improving the purification efficiency of the raw water in the filter cylinder 1.
Referring to fig. 1 to 4, in the present embodiment, the biological filter based on the nano mesoporous filter material includes a plurality of filter cylinder bodies 1, and the filter cylinder bodies 1 are communicated to form a multi-stage series structure. In this embodiment, preferably, the biological filter based on the nano mesoporous filter material includes three filter cylinder bodies 1, and the three filter cylinder bodies 1 are arranged in a sequentially decreasing step shape. In this embodiment, preferably, the water outlet 12 of the filter cylinder 1 at the previous stage of the two adjacent filter cylinders 1 is communicated with the water inlet 11 of the filter cylinder 1 at the next stage by a pipeline, and the water inlet 11 and the water outlet 12 of the filter cylinder 1 at the previous stage are respectively higher than the water inlet 11 and the water outlet 12 of the filter cylinder 1 at the next stage, so that the water flowing out of the filter cylinder 1 at the previous stage can automatically flow into the filter cylinder 1 at the next stage, and further, the raw water can sequentially pass through the plurality of filter cylinders 1 to be purified in multiple stages. In the embodiment, the three filter cylinder bodies 1 are arranged in a sequentially-reduced ladder shape, and the principle of the communicating vessel is utilized, so that water flowing out of the filter cylinder body 1 of the previous stage can automatically flow into the filter cylinder body 1 of the next stage, external power equipment is not needed to drive water flow to enter the filter cylinder body 1 of the next stage, the energy consumption can be reduced, and the cost is saved. However, it will be understood by those skilled in the art that in other embodiments, the number of the filter cartridges 1 may be two or four or more, and is not limited to three as disclosed in the present embodiment, and the more filter cartridges 1 are connected in series, the higher the purification rate is.
Referring to fig. 1 to 4, in this embodiment, an aeration device connected to an air inlet 13 is disposed in an overhead area 15 at the bottom of the filter cylinder 1, the aeration device can make oxygen entering the filter cylinder 1 through the aerator 2 more uniform and fine, further increase the oxygen content of water in the filter cylinder 1, and intermittently increase the oxygen content of water in the filter cylinder 1 through the aeration device, so as to better culture aerobic bacteria, facultative bacteria and anaerobic bacteria to form a flora. In this embodiment, can open the mode of oxygen-increasing machine 2 through the intermittent type nature and improve the oxygen content of water in the filtering pond barrel 1 intermittently, and then can cultivate aerobic bacteria and facultative anaerobe in filtering pond barrel 1 better, and when oxygen-increasing machine 2 shut down, be favorable to cultivateing the anaerobe in filtering pond barrel 1, and then make the quantity of aerobic bacteria, facultative anaerobe and anaerobe more balanced in filtering pond barrel 1, can improve purifying effect.
Referring to fig. 1 to 4, in the embodiment, the upper end of the filter cylinder 1 is provided with a ventilation port 14.
Referring to fig. 1 to 4, in this embodiment, a distance is provided between an upper layer of a filter material region 16 in a filter cylinder 1 and a water outlet 12 at an upper portion of the filter cylinder 1 to form a water outlet buffer region 17, an upper end of a return pipe 5 is communicated with the water outlet buffer region 17 in the filter cylinder 1, a lower end of the return pipe 5 is communicated with a bay region 15 in the filter cylinder 1, a return flow control pump 52 is installed in the return pipe 5, and an amount of raw mother liquor returned through the return pipe 5 is controlled to be 10% to 20% of an outflow amount of the water outlet 12 of the filter cylinder 1 by the return flow control pump 52, in this embodiment, the raw mother liquor return flow is preferably controlled to be 15%.
referring to the attached drawings 1 to 4, in the embodiment, the layers of the bagged filter materials 4 in the filter material area 16 are staggered by 90 degrees, the bagged filter materials 4 between rows are staggered and uneven end to end, and the ratio of the height of the filter material area 16 to the height of the vacant area 15 in the filter cylinder 1 is 3-3.5. In the embodiment, preferably, the diameter D of the filter cylinder 1 is 200 cm-250 cm, the height H1 of the overhead area 15 is 40 cm-60 cm, the height H2 of the filter material area is 120 cm-210 cm, and the interval between rows of bagged filter materials 4 in the same layer in the filter material area 16 is 2 cm-5 cm. In this embodiment, stagger 90 between 4 layers of the bagged filter material in the filter material district 16 and the layer, row and row between the bagged filter material 4 be the uneven form of staggering end to end, such mode of piling up can guarantee the pile up steadiness of the bagged filter material 4 in the filter material district 16, and stagger 90 between 4 layers of the bagged filter material, the route that supplies the raw water to flow through that makes the clearance formation between each bagged filter material 4 in filter material district 16 lengthen, can increase the detention time of raw water in filter material district 16, and then can further improve purification efficiency.
Referring to fig. 1 to 4, in the present embodiment, the support frame 3 includes a support foot 31 and a support net 32, the support net 32 is higher than the air inlet 13, and a plurality of bagged filter materials 4 are stacked on the support net 32. In the embodiment, in order to conveniently install the support frame 3 into the filter tank cylinder 1, the support frame 3 can be divided into a plurality of small support frame blocks, the support frame 3 is formed by assembling a plurality of support frame blocks in the filter tank cylinder 1, and meanwhile, the ventilation port 14 at the upper end of the filter tank cylinder 1 can be arranged to be larger so as to be convenient for placing the support frame blocks and the bagged filter materials 4.
Referring to fig. 1 to 4, in this embodiment, the installation height of the aerator 2 is higher than the water outlet 12 of the highest filter tank body 1 to prevent water in the filter tank body 1 from flowing backward into the aerator 2 when the aerator 2 is stopped.
Referring to fig. 1 to 4, in the present embodiment, the water inlet 11 and the air inlet 13 of the filter cylinder 1 are both formed on the lower peripheral surface of the filter cylinder 1, and the water outlet 12 is formed on the upper peripheral surface of the filter cylinder 1.
Example two
Referring to fig. 5 to 7, the difference between the first embodiment and the second embodiment is that the arrangement of the filter cylinder bodies 1 is different, in the present embodiment, the biological filter based on the nano-mesoporous filter material includes three filter cylinder bodies 1, and the three filter cylinder bodies 1 are arranged in a horizontal equal height manner. However, it will be understood by those skilled in the art that in other embodiments, the number of the filter cartridges 1 may be two or four or more, and is not limited to three as disclosed in the present embodiment, and the more filter cartridges 1 are connected in series, the higher the purification rate is.
referring to fig. 5 to 7, in this embodiment, the water outlet 12 of the previous filter cylinder 1 of the two adjacent filter cylinders 1 is communicated with the water inlet 11 of the next filter cylinder 1 through a pipeline, and a water pump 6 is disposed on the communicated pipeline, so as to pressurize the water flowing out of the previous filter cylinder 1 and input the water into the next filter cylinder 1, so that the raw water can sequentially pass through the plurality of filter cylinders 1 to be purified in multiple stages.
Referring to fig. 5 to 7, in this embodiment, the inlet end of the return pipe 5 is connected to the pipeline connecting the water outlet 12 of the filter cylinder 1 and the water inlet 11 of the next filter cylinder 1, and is located behind the water pump 6, the outlet end of the return pipe 5 is communicated with the empty space 15 in the filter cylinder 1, and the return pipe 5 is provided with a return flow control valve 51, the amount of the raw water mother liquor that is controlled to flow back by the return flow control valve 51 is 10% to 20% of the amount of the raw water mother liquor that flows out from the water outlet 12 of the filter cylinder 1, in this embodiment, the amount of the raw water mother liquor that flows back is preferably controlled to be 15%.
Referring to fig. 5 to 7, in the embodiment, a water discharge pipeline is connected to the water outlet 12 of the final stage filter cylinder 1, a water pump 6 and a water outlet control valve 7 are arranged on the water discharge pipeline, the inlet end of the return pipeline 5 of the filter cylinder 1 is connected to the water discharge pipeline and is located between the water pump 6 and the water outlet control valve 7, and the outlet end of the return pipeline 5 is communicated with an overhead area 15 in the filter cylinder 1.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and these modifications or substitutions do not make the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention, so that all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
Claims (10)
1. A biofilter based on nano mesoporous filter materials is characterized in that: comprises a filter tank body (1), the lower part of the filter tank body (1) is provided with a water inlet (11) which can supply water to flow in, the upper part of the filter tank body is provided with a water outlet (12) which can supply water to flow out so as to form a water outlet structure at the upper end of the lower water inlet, the lower part of the filter tank body (1) is also provided with an air inlet (13) which can be connected with an aerator (2), a support frame (3) which can form a frame empty area (15) at the bottom of the filter tank body (1) is arranged in the filter tank body (1), the support height of the support frame (3) is higher than that of the air inlet (13), a plurality of layers of bagged filter materials (4) filled with nano mesoporous filter materials are stacked on the support frame (3) so as to form a filter material area (16) with a dense porous structure, flora can be cultured in the filter material area (16), and each layer of, the rows are spaced at intervals and staggered from layer to layer, raw water to be treated can enter the filter cylinder body (1) through the water inlet (11) and sequentially passes through the framed empty area (15) and the filter material area (16) to be purified by flora, and a backflow pipeline (5) which can enable a raw water mother liquor containing mature flora flowing out of the filter cylinder body (1) to partially flow back to the framed empty area (15) in the bottom of the filter cylinder body (1) is arranged on the filter cylinder body (1) so as to improve the purification efficiency.
2. The biofilter based on the nano-mesoporous filter material according to claim 1, characterized in that: the biological filter based on the nano mesoporous filter material comprises a plurality of filter cylinder bodies (1), wherein the filter cylinder bodies (1) are communicated to form a multistage series structure.
3. The biofilter based on the nano-mesoporous filter material according to claim 2, characterized in that: the biological filter based on the nano mesoporous filter material comprises three filter cylinder bodies (1), wherein the three filter cylinder bodies (1) are arranged in a step shape which is reduced in sequence.
4. The biofilter based on nano-mesoporous filter material according to claim 3, wherein: the water outlet (12) of the filter cylinder (1) at the upper stage in the two adjacent filter cylinder bodies (1) is communicated with the water inlet (11) of the filter cylinder (1) at the lower stage through a pipeline, and the water inlet (11) and the water outlet (12) of the filter cylinder (1) at the upper stage are respectively higher than the water inlet (11) and the water outlet (12) of the filter cylinder (1) at the lower stage, so that the water flowing out of the filter cylinder (1) at the upper stage can automatically flow into the filter cylinder (1) at the lower stage, and further the raw water can sequentially pass through the filter cylinder bodies (1) to be purified in multiple stages.
5. The biofilter based on nano-mesoporous filter material according to claim 4, wherein: the filter tank is characterized in that a distance is arranged between the upper layer of a filter material area (16) in the filter tank barrel body (1) and a water outlet (12) in the upper part of the filter tank barrel body (1) at an interval to form a water outlet cache area (17), the upper end of a return pipeline (5) is communicated with the water outlet cache area (17) in the filter tank barrel body (1), the lower end of the return pipeline (5) is communicated with a frame empty area (15) in the filter tank barrel body (1), a return flow control pump (52) is installed in the return pipeline (5), and the amount of raw water mother liquor returned through the return pipeline (5) is controlled to be 10% -20% of the outflow of the water outlet (12) of the barrel body (1) through the return flow control pump (52).
6. The biofilter based on the nano-mesoporous filter material according to claim 2, characterized in that: the biological filter based on the nano mesoporous filter material comprises three filter cylinder bodies (1), wherein the three filter cylinder bodies (1) are arranged horizontally at the same height.
7. The biofilter based on the nano-mesoporous filter material according to claim 6, wherein: the water outlet (12) of the filter cylinder (1) of the previous stage in the two adjacent filter cylinder bodies (1) is communicated with the water inlet (11) of the filter cylinder (1) of the next stage through a pipeline, and a water pump (6) is arranged on the communicated pipeline, so that the water flowing out of the filter cylinder (1) of the previous stage is pressurized and input into the filter cylinder (1) of the next stage, and the raw water can sequentially pass through the filter cylinder bodies (1) to be purified in multiple stages.
8. A biofilter based on nano-mesoporous filter material according to claim 7, characterized in that: the inlet end of the backflow pipeline (5) is connected to a pipeline which is connected with the water outlet (12) of the filter tank cylinder (1) and the water inlet (11) of the next filter tank cylinder (1) and is positioned behind the water pump (6), the outlet end of the backflow pipeline (5) is communicated with a frame empty area (15) in the filter tank cylinder (1), a backflow control valve (51) is arranged on the backflow pipeline (5), and the amount of raw water mother liquor which is controlled to flow back through the backflow control valve (51) is 10% -20% of the outflow of the water outlet (12) of the filter tank cylinder (1).
9. The biofilter based on nano-mesoporous filter material according to any of claims 1 to 8, wherein: the bagged filter materials (4) in the filter material area (16) are staggered by 90 degrees from layer to layer, the bagged filter materials (4) between rows are staggered and uneven from head to tail, and the ratio of the heights of the filter material area (16) and the frame empty area (15) in the filter cylinder body (1) is 3-3.5.
10. A biofilter based on nano-mesoporous filter material according to claim 9, characterized in that: the diameter D of the filter tank cylinder body (1) is 200 cm-250 cm, the height H1 of the frame empty area (15) is 40 cm-60 cm, the height H2 of the filter material area is 120 cm-210 cm, and the interval between rows of bagged filter materials (4) in the same layer in the filter material area (16) is 2 cm-5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884286.7A CN110550730A (en) | 2019-09-19 | 2019-09-19 | Biological filter based on nano mesoporous filter material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910884286.7A CN110550730A (en) | 2019-09-19 | 2019-09-19 | Biological filter based on nano mesoporous filter material |
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| CN111908598A (en) * | 2020-08-21 | 2020-11-10 | 惠州市合新科技有限公司 | Plug flow type aerobic biofilter wastewater treatment system and method |
| CN111908603A (en) * | 2020-08-21 | 2020-11-10 | 惠州市合新科技有限公司 | Novel anaerobic biological filter wastewater treatment equipment and wastewater treatment method thereof |
| CN113860535A (en) * | 2021-11-02 | 2021-12-31 | 航天环保(北京)有限公司 | Water purifying device |
| CN114031147A (en) * | 2021-11-02 | 2022-02-11 | 航天环保(北京)有限公司 | Method and system for improving water quality by utilizing wave cracking nano material |
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Application publication date: 20191210 |