CN116462310A - Denitrification filter material cleaning filter tank based on sulfur autotrophic process and filter material cleaning treatment method - Google Patents
Denitrification filter material cleaning filter tank based on sulfur autotrophic process and filter material cleaning treatment method Download PDFInfo
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- CN116462310A CN116462310A CN202310143521.1A CN202310143521A CN116462310A CN 116462310 A CN116462310 A CN 116462310A CN 202310143521 A CN202310143521 A CN 202310143521A CN 116462310 A CN116462310 A CN 116462310A
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- sulfur autotrophic
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- 239000000463 material Substances 0.000 title claims abstract description 123
- 238000004140 cleaning Methods 0.000 title claims abstract description 112
- 230000001651 autotrophic effect Effects 0.000 title claims abstract description 104
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 103
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 103
- 239000011593 sulfur Substances 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 261
- 238000011010 flushing procedure Methods 0.000 claims abstract description 41
- 238000001914 filtration Methods 0.000 claims abstract description 22
- 238000009826 distribution Methods 0.000 claims abstract description 20
- 239000002351 wastewater Substances 0.000 claims abstract description 12
- 238000012546 transfer Methods 0.000 claims abstract description 11
- 239000004744 fabric Substances 0.000 claims description 75
- 239000007788 liquid Substances 0.000 claims description 58
- 239000000835 fiber Substances 0.000 claims description 47
- 239000000945 filler Substances 0.000 claims description 44
- 239000002699 waste material Substances 0.000 claims description 18
- 239000010410 layer Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 10
- 239000002344 surface layer Substances 0.000 claims description 10
- 239000010865 sewage Substances 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 231100000719 pollutant Toxicity 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 2
- 238000006424 Flood reaction Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 7
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000011001 backwashing Methods 0.000 description 3
- 238000005243 fluidization Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 241000605118 Thiobacillus Species 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
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- 230000001052 transient effect Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/28—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed moving during the filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
- B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
- B01D24/4652—Counter-current flushing, e.g. by air by using gasbumps
-
- 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
- C02F3/08—Aerobic processes using moving contact bodies
- C02F3/085—Fluidized beds
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- 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
-
- 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
-
- 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 denitrification filter material cleaning filter tank based on a sulfur autotrophic process and a filter material cleaning treatment method, wherein the filter tank structure comprises a filter tank body; the filter comprises a filter body, a filter material collecting cover, an air diffuser and a compressed air pipe, wherein the filter material cleaning device, the backwash water control device, the self-cleaning filtering device, the water producing pipe, the self-cleaning filter waste water draining pipe and the filter backwash draining pipe are arranged in the filter body from top to bottom, the water inlet main pipe, the water distribution device and the filter material collecting cover are arranged in the middle of the filter body, and the air diffuser and the compressed air pipe are arranged in the bottom of the filter body; the denitrification filter material cleaning filter based on the sulfur autotrophic process has the technical effects of small occupied area, simple operation and maintenance, continuous operation, no need of shutdown back flushing, stable effluent quality, adoption of a fluidized bed mode, high mass transfer efficiency and the like.
Description
Technical Field
The invention relates to the technical field of denitrification, in particular to a denitrification filter material cleaning filter tank based on a sulfur autotrophic process and a filter material cleaning treatment method.
Background
The denitrification filter structure is a widely applied sewage treatment infrastructure. However, the research finds that, based on the current technical reasons, the existing denitrification filter still has the following technical defects:
for example: 1. the filter floor area is large, and the operation and maintenance are complex: the current sulfur autotrophic filter generally adopts a gas-water combined backwash forward flow filter or reverse flow filter, as described in a patent CN114702132A (a sulfur autotrophic denitrification biological filter process), a backwash facility needs equipment such as a water pump, a fan and the like, and meanwhile, the coordination participation of a plurality of electro-pneumatic valves is involved, and the automatic operation of a PLC is seriously depended;
2. intermittent operation, slightly poor water quality stability: the method of patent CN114702132A (a sulfur autotrophic denitrification biological filter process) comprises a gas washing stage, a water washing stage and a filtering stage, wherein the intermittent operation caused by back washing leads to the increase of the transient nitrate nitrogen volume of other lattice filters and influences the stability of the total nitrogen index of the effluent;
3. the mass transfer efficiency is low by adopting a fixed bed form: for example, patent CN114702132a (a sulfur autotrophic denitrification biological filter process), CN113149204a (a percolating bed reaction device for sulfur autotrophic denitrification biological denitrification) and the like all adopt a fixed bed filter form, the sulfur autotrophic filter material cannot form a fluidization state in the reactor, the surface layer of the filter material cannot be fully fused with raw water, and the autotrophic denitrification rate is lower than that of a fluidized bed;
4. the suspended matter interception function is not needed, and the post-stage filtration technology is still needed: the sulfur autotrophic filter material generally adopts the particle size of 2-5 mm, the grading can not effectively intercept suspended matters in raw water or generated in the denitrification process, and the filtering unit is still needed in the later stage to ensure that the SS of the discharged water is less than 10mg/L; CN109179647 (a sulfur autotrophic denitrification fluidized bed) designs an adsorption filtration layer (adopting foam particle filtration beads of 2-4 mm) at the top of the filter, but cannot automatically back wash the adsorption filtration layer, and may need to be stopped for manual cleaning, thus affecting the operation efficiency of the filter;
5. no automatic reaction rate control means: in the design of the sulfur autotrophic filter, the filter is generally designed according to the maximum value of nitrate nitrogen removal required, the reducing sulfide, the alkaline supplementary substances such as calcium carbonate and the like are added into the filter according to the proportional quantity, and most town sewage treatment plants only have partial water TN higher than that of the water in a period, if the denitrification design is carried out according to the peak value and the reaction rate is controlled, the actual removal delta TN of the sulfur autotrophic filter is far greater than the delta TN under the average water quality load, so that the consumption speed of the filler is increased, and economic waste is caused.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a denitrification filter cleaning filter based on a sulfur autotrophic process and a filter cleaning treatment method, which are used for solving the problems pointed out in the background art.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a denitrification filter material cleaning filter based on a sulfur autotrophic process, which comprises a filter body 1;
wherein, the filter body 1 comprises a filter material cleaning device 5, a back flushing water control device 6, a self-cleaning filter device 7, a water production pipe 8, a self-cleaning filter waste water drain pipe 9 and a filter back flushing drain pipe 10 which are arranged at the top position of the filter body 1 from top to bottom, a water inlet main pipe 2, a water distribution device 3 and a filter material collecting cover 4 which are arranged at the middle position of the filter body 1, an air diffuser 12 and a compressed air pipe 13 which are arranged at the bottom position of the filter body 1;
the denitrification filter material cleaning filter based on the sulfur autotrophic process further comprises a self-priming water pump 14, a waste collection port 15, an air compressor 16 and an alkalinity adding device 17; the self-priming water pump 14 is arranged on the pipeline of the self-cleaning filter waste water drain pipe 9;
the head end of the water inlet main pipe 2 is positioned outside the filter tank body 1, the tail end of the water inlet main pipe 2 extends into the filter tank body 1, and the tail end of the water inlet main pipe 2 is communicated with the water distribution device 3; the water distribution device 3 is uniformly designed into a plurality of branch pipelines along the circumferential direction of the tail end of the water inlet main pipe 2, the upper part of each branch pipeline is sealed, and the lower part is provided with holes for ensuring that raw water flows are uniformly distributed at the bottom of the filter tank body 1; the alkalinity adding device 17 is arranged at the head end of the main water inlet pipe 2, and the bottom end of the water distribution device 3 is provided with a filter material collecting cover 4; the unpowered mixer 21 is embedded on a pipeline of the water inlet main pipe 2, and the unpowered mixer 21 is used for carrying out material mixing on alkaline liquid injected into raw water by the alkalinity adding device 17;
the bottom of the filter tank body 1 is provided with a cone bottom and a pneumatic feed liquid lifting pipe; one end of the pneumatic feed liquid lifting pipe 11 penetrates into the bottom of the cone hopper, and the other end of the pneumatic feed liquid lifting pipe 11 penetrates out of the filter tank body 1, extends upwards and to the top end of the filter tank body 1, then returns to the top of the filter tank body 1 and enters the interior of the backwash water control device 6; the pneumatic feed liquid lifting pipe 11 is used for pumping raw water at the bottom of the filter tank body 1 into the back flushing water control device 6;
the tail end of the pneumatic feed liquid lifting pipe 11 is connected with an air diffuser 12, and the inner wall of the air diffuser 12 is communicated with the pneumatic feed liquid lifting pipe 11 through air holes; the air diffuser 12 is externally connected with a compressed air pipe 13 at the same time, and the compressed air pipe 13 is supplied with compressed air by an air compressor 16; the air diffuser 12 is used for spraying and pouring the introduced compressed air into the bottom of the cone hopper of the filter tank body 1 to fully mix the sulfur autotrophic combined filler, raw water and compressed air at the bottom of the filter tank body 1;
the filter material cleaning device 5 is positioned below the backwash water control device 6, and the materials (sulfur autotrophic combined filler, raw water and compressed air) pumped by the pneumatic feed liquid lifting pipe 11 are conveyed to the filter material cleaning device 5;
the back flush water control device 6 is positioned at the top of the filter tank body 1, the outer cylinder wall of the back flush water control device 6 is embedded in the self-cleaning filter device 7, the back flush water control device 6 consists of two sleeves, the inner cylinder wall is provided with an opening and an adjusting plugboard 61, and the lower part of the outer cylinder wall of the back flush water control device 6 is connected with a filter tank back flush drain pipe 10; the pneumatic feed liquid lifting pipe 11 is specifically used for pumping a small amount of raw water, filtered by the inner sleeve of the backwash water control device 6, and then squeezed into the outer sleeve of the backwash water control device 6, and the inner adjusting plugboard 61 is used for adjusting the backwash water amount up and down; the filter tank backwash drain pipe 10 is used for draining to a factory sewage pipe network;
the waste collection port 15 is connected with the pneumatic feed liquid lifting pipe 11 through a valve and is used for transferring sulfur autotrophic combined filler residues in the filter tank.
Preferably, the unpowered mixer 21 includes a rotation shaft fixed to the inner wall at an intermediate position and a helical blade rotatably fitted to the rotation shaft.
Preferably, the backwash water control device 6 has an adjustable backwash water quantity.
Preferably, the main water inlet pipe 2 comprises a horizontal pipe section and a vertical pipe section communicated with the horizontal pipe section; the unpowered mixer 21 is embedded in the vertical pipe section of the water inlet main pipe 2.
Preferably, the self-cleaning filter device 7 comprises a fiber filter cloth 71, a filter cloth cleaner 72, a rotary gear 73 and a driving device 74;
in the filtering mode of the self-cleaning filtering device 7, water flows through the fiber filter cloth 71 to intercept suspended matters, the intercepted suspended matters are intercepted on the lower surface layer of the fiber filter cloth, and filtered water flows upwards and is finally discharged from the water producing pipe 8; when the suspended matter is accumulated to a preset weight by the fiber filter cloth 71, back flushing is performed through a preset automatic control program, the intercepted suspended matter is discharged into the system, a rotary gear 73 positioned at the top of the fiber filter cloth 71 is mechanically driven by a driving device 74 to rotate clockwise, a filter cloth cleaner 72 positioned below the fiber filter cloth 71 is kept original and fixed and does not rotate along with the fiber filter cloth 71, the filter cloth cleaner 72 is in a sucker design form, one end of the filter cloth cleaner 72 is provided with a fixed water suction pipe along the diameter direction of the fiber filter cloth 71, and a pipeline interface at the other end of the filter cloth cleaner 72 is connected with the self-priming water pump 14.
Correspondingly, the invention provides a denitrification filter material cleaning treatment method based on a sulfur autotrophic process, which adopts a denitrification filter material cleaning filter based on the sulfur autotrophic process, and comprises the following operation steps:
step 1, starting an alkalinity adding device 17 on a water inlet main pipe 2 to realize material mixing of alkali liquor injected into raw water of the water inlet main pipe 2; when raw water passes through the water inlet main pipe 2 and then enters the water distribution device 3 through the unpowered mixer 21, the water distribution device 3 uniformly distributes raw water flow at the bottom of the filter tank body 1; the filter material collecting cover 4 filters raw water flow to retain filter materials; the unpowered mixer 21 is embedded in a vertical pipeline of the water inlet main pipe 2, and the unpowered mixer 21 is used for mixing materials by alkaline liquid injected into raw water by the alkalinity adding device 17;
step 2, after raw water is uniformly distributed through the bottom of the filter tank body 1, the reverse flow passes through the sulfur autotrophic filter material layer and then reaches the bottom of the self-cleaning filter device 7; the self-cleaning filter device 7 consists of a fiber filter cloth 71, a filter cloth cleaner 72, a rotary gear 73 and a driving device 74; in the filtering mode of the self-cleaning filtering device 7, water flows through the fiber filter cloth 71 to intercept suspended matters, the intercepted suspended matters are intercepted on the lower surface layer of the fiber filter cloth, and filtered water flows upwards and is finally discharged from the water producing pipe 8;
the step 1 and the step 2 finish the water passage process based on the sulfur autotrophic denitrification filter, namely, the operation from bottom to top;
implementing detection of whether the internal accumulated biomembrane of the current sulfur autotrophic combined filler exceeds a standard threshold value, if so, judging that the filter material layer of the current sulfur autotrophic combined filler is easy to be blocked, starting subsequent back flushing operation for removing the aged biomembrane, and specifically comprising:
step 3, starting an air diffuser 12 communicated with the tail end of the pneumatic feed liquid lifting pipe 11, wherein the air diffuser 12 is externally connected with a compressed air pipe 13, the compressed air pipe 13 is supplied with compressed air by an air compressor 16, and the introduced compressed air at the moment is gushed into the bottom of a cone bucket of the filter body 1 to fully mix sulfur autotrophic combined filler, raw water and compressed air at the bottom of the filter body 1; simultaneously, the pneumatic feed liquid lifting pipe 11 is used for pumping the mixed material (namely, sulfur autotrophic combined filler, raw water and compressed air to realize fully mixed liquid) at the bottom of the filter tank body 1 into the back flushing water control device 6 to lift the mixed material to the top of the filter tank body;
step 4, the filter material cleaning device 5 is positioned below the backwash water control device 6, and the mixed material (the mixed material refers to sulfur autotrophic combined filler, raw water and compressed air) pumped by the pneumatic feed liquid lifting pipe 11 is conveyed to the filter material cleaning device 5; the filter material cleaning device 5 adopts a staggered baffle plate mode, wherein the sulfur autotrophic combined filler slides down through the filter material cleaning device 5 from top to bottom due to larger water weight and finally falls back to the filter material layer in the filter body 1, and the process completes the operation of the filter material from top to bottom (opposite to the raw water passage);
step 5; the back flush water control device 6 is positioned at the top of the filter tank body 1, the outer cylinder wall of the back flush water control device 6 is embedded in the self-cleaning filter device 7, the back flush water control device 6 consists of two sleeves, the inner cylinder wall is provided with an opening and an adjusting plugboard 61, and the lower part of the outer cylinder wall of the back flush water control device 6 is connected with a filter tank back flush drain pipe 10; the filtered water after passing through the sulfur autotrophic combined filler passes through the filter material cleaning device 5 from bottom to top, and moves reversely with the falling sulfur autotrophic combined filler (the sulfur autotrophic combined filler falls back from top to bottom), so as to achieve the purpose of cleaning, the washed water and a small amount of raw water pumped by the pneumatic feed liquid lifting pipe 11 are filtered in the inner sleeve of the backwash water control device 6, the filtered water is extruded into the outer sleeve of the backwash water control device 6, at the moment, the backwash water quantity can be adjusted up and down through the adjusting plugboard 61 positioned at the opening of the inner sleeve wall, and finally backwash wastewater is discharged to a factory sewage pipe network through the filter backwash drain pipe 10;
step 6, in the cleaning process of the sulfur autotrophic combined filter material, the filter tank body 1 still works without stopping;
step 7, the waste collection port 15 is connected with the pneumatic feed liquid lifting pipe 11 through a valve and is used for transferring sulfur autotrophic combined filler residues in the filter tank body; in the transfer process of the sulfur autotrophic combined filler residues, only the air compressor 16 is required to be started, the pipeline valve of the pneumatic feed liquid lifting pipe 11 is closed, and the pipeline valve of the waste collection port 15 is opened to realize the transfer treatment of the sulfur autotrophic combined filler residues in the filter tank body;
the step 3, the step 4, the step 5, the step 6 and the step 7 finish the cleaning process of the sulfur autotrophic combined filter material.
Preferably, in the executing process of step 2, when the suspended matter amount intercepted by the fiber filter cloth 71 is accumulated to a preset weight, back flushing is performed by a preset self-control program, the intercepted suspended matter is discharged into the system, at this time, a rotating gear 73 positioned at the top of the fiber filter cloth 71 is mechanically driven by a driving device 74 to rotate clockwise, while a filter cloth cleaner 72 positioned below the fiber filter cloth 71 is kept originally fixed and does not rotate along with the fiber filter cloth 71, the filter cloth cleaner 72 is in a sucker design form, one end of the filter cloth cleaner 72 is provided with a fixed water suction pipe along the diameter direction of the fiber filter cloth 71, and a pipeline interface at the other end of the filter cloth cleaner 72 is connected with the self-suction water pump 14, namely, the pollutant on the surface layer of the fiber filter cloth 71 is cleaned by the self-suction water pump to realize the cleaning operation and the filtering operation.
Compared with the prior art, the invention has the following beneficial effects:
the first embodiment of the invention provides a denitrification filter material cleaning filter tank based on a sulfur autotrophic process, which has at least the following technical advantages: 1. the occupied area is small, and the operation and maintenance are simple; 2. continuous operation, no shutdown for back flushing is needed, and the quality of the effluent is stable; 3. the fluidized bed is adopted, so that the mass transfer efficiency is high; 4. a suspended matter interception function is provided; 5. an automatic reaction rate control method is established, and the consumption of sulfur autotrophic filter materials is reduced in an uncontrolled manner: the addition amount of the sulfur autotrophic combined filter material is considered according to the average nitrate nitrogen removal amount, and the integral reaction rate is controlled by controlling the amount of the alkalinity required by biological reaction during peak denitrification, so that the waste caused by adding the combined filter material according to the peak value is avoided.
Drawings
FIG. 1 is an overall schematic diagram of a denitrification filter cleaning filter based on a sulfur autotrophic process;
FIG. 2 is a schematic diagram of a partial enlarged structure of a denitrification filter cleaning filter based on a sulfur autotrophic process;
FIG. 3 is a schematic top view of a backwash water control device and a self-cleaning filter device in a denitrification filter based on a sulfur autotrophic process;
fig. 4 is a schematic bottom view of a backwash water control device and a self-cleaning filter device in a denitrification filter based on a sulfur autotrophic process.
1. A filter body; 2. a water inlet main pipe; 21. an unpowered mixer; 3. a water distribution device; 4. a filter material collection cover; 5. a filter material cleaning device; 6. a backwash water control device; 61. adjusting the plugboard; 7. self-cleaning filter device; 71. a fibrous filter cloth; 72. a filter cloth cleaner; 73. a rotary gear; 74. a driving device; 8. a water producing pipe; 9. self-cleaning filter waste water drain pipe; 10. backwashing water discharge pipe of the filter tank; 11. a pneumatic feed liquid riser; 12. an air diffuser; 13. a compressed air tube; 14. self-priming water pump; 15. a waste collection port; 16. an air compressor; 17. and an alkalinity adding device.
Detailed Description
In order that the manner in which the above recited features, objects and advantages of the present invention are obtained will become readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.
Example 1
Referring to fig. 1 to 4, a first embodiment of the present invention provides a denitrification filter cleaning filter based on a sulfur autotrophic process, comprising a filter body 1;
wherein, the filter body 1 comprises a filter material cleaning device 5, a back flushing water control device 6, a self-cleaning filter device 7, a water production pipe 8, a self-cleaning filter waste water drain pipe 9 and a filter back flushing drain pipe 10 which are arranged at the top position of the filter body 1 from top to bottom, a water inlet main pipe 2, a water distribution device 3 and a filter material collecting cover 4 which are arranged at the middle position of the filter body 1, an air diffuser 12 and a compressed air pipe 13 which are arranged at the bottom position of the filter body 1;
the denitrification filter material cleaning filter based on the sulfur autotrophic process further comprises a self-priming water pump 14, a waste collection port 15, an air compressor 16 and an alkalinity adding device 17; the self-priming water pump 14 is arranged on the pipeline of the self-cleaning filter waste water drain pipe 9;
the head end of the water inlet main pipe 2 is positioned outside the filter tank body 1, the tail end of the water inlet main pipe 2 extends into the filter tank body 1, and the tail end of the water inlet main pipe 2 is communicated with the water distribution device 3; the water distribution device 3 is uniformly designed into a plurality of branch pipelines along the circumferential direction of the tail end of the water inlet main pipe 2, the upper part of each branch pipeline is sealed, and the lower part is provided with holes for ensuring that raw water flows are uniformly distributed at the bottom of the filter tank body 1; the alkalinity adding device 17 is arranged at the head end of the main water inlet pipe 2, and the bottom end of the water distribution device 3 is provided with a filter material collecting cover 4; the unpowered mixer 21 is embedded on a pipeline of the water inlet main pipe 2, and the unpowered mixer 21 is used for carrying out material mixing on alkaline liquid injected into raw water by the alkalinity adding device 17;
the bottom of the filter tank body 1 is provided with a cone bottom and a pneumatic feed liquid lifting pipe; one end of the pneumatic feed liquid lifting pipe 11 penetrates into the bottom of the cone hopper, and the other end of the pneumatic feed liquid lifting pipe 11 penetrates out of the filter tank body 1, extends upwards and to the top end of the filter tank body 1, then returns to the top of the filter tank body 1 and enters the interior of the backwash water control device 6; the pneumatic feed liquid lifting pipe 11 is used for pumping raw water at the bottom of the filter tank body 1 into the back flushing water control device 6;
the tail end of the pneumatic feed liquid lifting pipe 11 is connected with an air diffuser 12, and the inner wall of the air diffuser 12 is communicated with the pneumatic feed liquid lifting pipe 11 through air holes; the air diffuser 12 is externally connected with a compressed air pipe 13 at the same time, and the compressed air pipe 13 is supplied with compressed air by an air compressor 16; the air diffuser 12 is used for spraying and pouring the introduced compressed air into the bottom of the cone hopper of the filter tank body 1 to fully mix the sulfur autotrophic combined filler, raw water and compressed air at the bottom of the filter tank body 1;
the filter material cleaning device 5 is positioned below the backwash water control device 6, and the materials (sulfur autotrophic combined filler, raw water and compressed air) pumped by the pneumatic feed liquid lifting pipe 11 are conveyed to the filter material cleaning device 5;
the back flush water control device 6 is positioned at the top of the filter tank body 1, the outer cylinder wall of the back flush water control device 6 is embedded in the self-cleaning filter device 7, the back flush water control device 6 consists of two sleeves, the inner cylinder wall is provided with an opening and an adjusting plugboard 61, and the lower part of the outer cylinder wall of the back flush water control device 6 is connected with a filter tank back flush drain pipe 10; the pneumatic feed liquid lifting pipe 11 is specifically used for pumping a small amount of raw water, filtered by the inner sleeve of the backwash water control device 6, and then squeezed into the outer sleeve of the backwash water control device 6, and the inner adjusting plugboard 61 is used for adjusting the backwash water amount up and down; the filter tank backwash drain pipe 10 is used for draining to a factory sewage pipe network;
the waste collection port 15 is connected with the pneumatic feed liquid lifting pipe 11 through a valve and is used for transferring sulfur autotrophic combined filler residues in the filter tank.
Preferably, the unpowered mixer 21 includes a rotation shaft fixed to the inner wall at an intermediate position and a helical blade rotatably fitted to the rotation shaft.
Preferably, the backwash water control device 6 has an adjustable backwash water quantity.
Preferably, the main water inlet pipe 2 comprises a horizontal pipe section and a vertical pipe section communicated with the horizontal pipe section; the unpowered mixer 21 is embedded in the vertical pipe section of the water inlet main pipe 2. The unpowered mixer 21 is used for mixing materials by alkaline liquid injected into raw water by the alkalinity adding device 17, the interior of the unpowered mixer is in a spiral blade form, and a turbulent flow state is formed in the unpowered mixer only by potential energy of gravity flow, so that external power is not needed;
preferably, the self-cleaning filter device 7 comprises a fiber filter cloth 71, a filter cloth cleaner 72, a rotary gear 73 and a driving device 74;
in the filtering mode of the self-cleaning filtering device 7, water flows through the fiber filter cloth 71 to intercept suspended matters, the intercepted suspended matters are intercepted on the lower surface layer of the fiber filter cloth, and filtered water flows upwards and is finally discharged from the water producing pipe 8; when the suspended matter is accumulated to a preset weight by the fiber filter cloth 71, back flushing is performed through a preset automatic control program, the intercepted suspended matter is discharged into the system, a rotary gear 73 positioned at the top of the fiber filter cloth 71 is mechanically driven by a driving device 74 to rotate clockwise, a filter cloth cleaner 72 positioned below the fiber filter cloth 71 is kept original and fixed and does not rotate along with the fiber filter cloth 71, the filter cloth cleaner 72 is in a sucker design form, one end of the filter cloth cleaner 72 is provided with a fixed water suction pipe along the diameter direction of the fiber filter cloth 71, and a pipeline interface at the other end of the filter cloth cleaner 72 is connected with the self-priming water pump 14.
Correspondingly, the invention provides a denitrification filter material cleaning treatment method based on a sulfur autotrophic process, which adopts a denitrification filter material cleaning filter based on the sulfur autotrophic process, and comprises the following operation steps:
step 1, starting an alkalinity adding device 17 on a water inlet main pipe 2 to realize material mixing of alkali liquor injected into raw water of the water inlet main pipe 2; when raw water passes through the water inlet main pipe 2 and then enters the water distribution device 3 through the unpowered mixer 21, the water distribution device 3 uniformly distributes raw water flow at the bottom of the filter tank body 1; the filter material collecting cover 4 filters raw water flow to retain filter materials; the unpowered mixer 21 is embedded in a vertical pipeline of the water inlet main pipe 2, and the unpowered mixer 21 is used for mixing materials by alkaline liquid injected into raw water by the alkalinity adding device 17;
step 2, after raw water is uniformly distributed through the bottom of the filter tank body 1, the reverse flow passes through the sulfur autotrophic filter material layer and then reaches the bottom of the self-cleaning filter device 7; the self-cleaning filter device 7 consists of a fiber filter cloth 71, a filter cloth cleaner 72, a rotary gear 73 and a driving device 74; in the filtering mode of the self-cleaning filtering device 7, water flows through the fiber filter cloth 71 to intercept suspended matters, the intercepted suspended matters are intercepted on the lower surface layer of the fiber filter cloth, and filtered water flows upwards and is finally discharged from the water producing pipe 8;
the step 1 and the step 2 finish the water passage process based on the sulfur autotrophic denitrification filter, namely, the operation from bottom to top;
implementing detection of whether the internal accumulated biomembrane of the current sulfur autotrophic combined filler exceeds a standard threshold value, if so, judging that the filter material layer of the current sulfur autotrophic combined filler is easy to be blocked, starting subsequent back flushing operation for removing the aged biomembrane, and specifically comprising:
step 3, starting an air diffuser 12 communicated with the tail end of the pneumatic feed liquid lifting pipe 11, wherein the air diffuser 12 is externally connected with a compressed air pipe 13, the compressed air pipe 13 is supplied with compressed air by an air compressor 16, and the introduced compressed air at the moment is gushed into the bottom of a cone bucket of the filter body 1 to fully mix sulfur autotrophic combined filler, raw water and compressed air at the bottom of the filter body 1; simultaneously, the pneumatic feed liquid lifting pipe 11 is used for pumping the mixed material (namely, sulfur autotrophic combined filler, raw water and compressed air to realize fully mixed liquid) at the bottom of the filter tank body 1 into the back flushing water control device 6 to lift the mixed material to the top of the filter tank body; at this time, the sulfur autotrophic combined filler, raw water and compressed air are mutually rubbed and mixed in the pneumatic feed liquid lifting pipe 11, and lifted to the top of the filter tank body under the action of uneven material density difference;
step 4, the filter material cleaning device 5 is positioned below the backwash water control device 6, and the mixed material (the mixed material refers to sulfur autotrophic combined filler, raw water and compressed air) pumped by the pneumatic feed liquid lifting pipe 11 is conveyed to the filter material cleaning device 5; the filter material cleaning device 5 adopts a staggered baffle plate mode, wherein the sulfur autotrophic combined filler slides down through the filter material cleaning device 5 from top to bottom due to larger water weight and finally falls back to the filter material layer in the filter body 1, and the process completes the operation of the filter material from top to bottom (opposite to the raw water passage);
step 5; the back flush water control device 6 is positioned at the top of the filter tank body 1, the outer cylinder wall of the back flush water control device 6 is embedded in the self-cleaning filter device 7, the back flush water control device 6 consists of two sleeves, the inner cylinder wall is provided with an opening and an adjusting plugboard 61, and the lower part of the outer cylinder wall of the back flush water control device 6 is connected with a filter tank back flush drain pipe 10; the filtered water after passing through the sulfur autotrophic combined filler passes through the filter material cleaning device 5 from bottom to top, and moves reversely with the falling sulfur autotrophic combined filler (the sulfur autotrophic combined filler falls back from top to bottom), so as to achieve the purpose of cleaning, the washed water and a small amount of raw water pumped by the pneumatic feed liquid lifting pipe 11 are filtered in the inner sleeve of the backwash water control device 6, the filtered water is extruded into the outer sleeve of the backwash water control device 6 (the liquid level of the filtered water is higher than the lowest height of the adjusting plugboard 6-1 under the action of liquid level difference), at the moment, the backwash water quantity can be adjusted up and down through the adjusting plugboard 61 positioned at the opening of the inner sleeve wall, and finally the backwash wastewater is discharged to a factory sewage pipe network through the filter backwash water drain pipe 10;
step 6, in the cleaning process of the sulfur autotrophic combined filter material, the filter tank body 1 still works without stopping;
step 7, the waste collection port 15 is connected with the pneumatic feed liquid lifting pipe 11 through a valve and is used for transferring sulfur autotrophic combined filler residues in the filter tank body; in the transfer process of the sulfur autotrophic combined filler residues, only the air compressor 16 is required to be started, the pipeline valve of the pneumatic feed liquid lifting pipe 11 is closed, and the pipeline valve of the waste collection port 15 is opened to realize the transfer treatment of the sulfur autotrophic combined filler residues in the filter tank body; ( And (3) injection: the sulfur autotrophic combined filler is added with a part of inert substances in the preparation process, the inert substances only play a role in strengthening the structural strength of the filter material, do not participate in biological denitrification reaction, and accumulate a certain volume of inert substances after long-time operation of the filter tank to occupy the space of the filter tank, so that the waste collection port 15 is independently arranged to facilitate the cleaning and transportation of the waste collection port )
The step 3, the step 4, the step 5, the step 6 and the step 7 finish the cleaning process of the sulfur autotrophic combined filter material.
Preferably, in the executing process of step 2, when the suspended matter amount intercepted by the fiber filter cloth 71 is accumulated to a preset weight, back flushing is performed by a preset self-control program, the intercepted suspended matter is discharged into the system, at this time, a rotating gear 73 positioned at the top of the fiber filter cloth 71 is mechanically driven by a driving device 74 to rotate clockwise, while a filter cloth cleaner 72 positioned below the fiber filter cloth 71 is kept originally fixed and does not rotate along with the fiber filter cloth 71, the filter cloth cleaner 72 is in a sucker design form, one end of the filter cloth cleaner 72 is provided with a fixed water suction pipe along the diameter direction of the fiber filter cloth 71, and a pipeline interface at the other end of the filter cloth cleaner 72 is connected with the self-suction water pump 14, namely, the pollutant on the surface layer of the fiber filter cloth 71 is cleaned by the self-suction water pump to realize the cleaning operation and the filtering operation.
The first embodiment of the invention provides a denitrification filter material cleaning filter tank based on a sulfur autotrophic process, which has at least the following technical advantages: 1. the occupied area is small, and the operation and maintenance are simple: compared with the prior art, the back flushing mode only needs an air compressor to provide compressed air, a clean water tank, a back flushing wastewater tank, a back flushing water pump, an electro-pneumatic valve and the like are not required to be built, the occupied space of the system is saved, and the operation and the maintenance are convenient; 2. continuous operation, no shutdown for back flushing, stable water quality of effluent: according to the invention, the back flushing does not need to be stopped during back flushing, and the sulfur autotrophic filter material layer is still in a biological reaction state during back flushing, so that the back flushing is stopped, the nitrate nitrogen load increasing pressure of other groups of sulfur autotrophic filters is not caused, and the TN index of the effluent is more effectively ensured; 3. adopts the fluidized bed form, and has high mass transfer efficiency: the sulfur autotrophic combined filter material can be circularly fluidized by utilizing a back flushing process, the fluidization circulation of the filter material can be controlled to be 2-6 h (the supply amount of compressed air is controlled through a component 16, the circulation speed of the filter material is controlled), and the movement direction (from top to bottom) of the filter material is opposite to the movement direction (from bottom to top) of water flow in the fluidization circulation process, so that the mass transfer of the thiobacillus material on the surface of the filter layer can be promoted; 4. is provided with a suspended matter interception function, and the rear section does not need a filtration process: the top of the filter tank is provided with a 7-self-cleaning filter device, suspended matters brought by endogenous growth of thiobacillus or in raw water are intercepted by fiber filter cloth, the output water can stably control the suspended matters below 10mg/L, and meanwhile, the device does not need to be shut down for backwashing, so that the high efficiency of the device is effectively ensured; 5. an automatic reaction rate control method is established, and the consumption of sulfur autotrophic filter materials is reduced in an uncontrolled manner: the addition amount of the sulfur autotrophic combined filter material is considered according to the average nitrate nitrogen removal amount, and the integral reaction rate is controlled by controlling the amount of the alkalinity required by biological reaction during peak denitrification, so that the waste caused by adding the combined filter material according to the peak value is avoided.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A denitrification filter material cleaning filter tank based on a sulfur autotrophic process is characterized in that: comprises a filter body;
wherein, the filter body comprises a filter material cleaning device, a backwash water control device, a self-cleaning filter device, a water production pipe, a self-cleaning filter waste water drain pipe and a filter backwash drain pipe which are arranged at the top position of the filter body from top to bottom, a water inlet main pipe 2, a water distribution device and a filter material collecting cover which are arranged at the middle position of the filter body, an air diffuser and a compressed air pipe which are arranged at the bottom position of the filter body;
the denitrification filter material cleaning filter tank based on the sulfur autotrophic process further comprises a self-priming water pump, a waste collection port, an air compressor and an alkalinity adding device; the self-priming water pump is arranged on the self-cleaning filter waste water drain pipe;
the head end of the water inlet main pipe is positioned outside the filter tank body, the tail end of the water inlet main pipe extends into the filter tank body, and the tail end of the water inlet main pipe is communicated with the water distribution device; the water distribution device is uniformly designed into a plurality of branch pipelines along the circumferential direction of the tail end of the main water inlet pipe, the upper part of each branch pipeline is sealed, and the lower part of each branch pipeline is provided with holes for ensuring that raw water flow is uniformly distributed at the bottom of the filter tank body; the alkalinity adding device is arranged at the head end of the water inlet main pipe, and the bottom end of the water distribution device is provided with a filter material collecting cover; the unpowered mixer is embedded on a pipeline of the water inlet main pipe and is used for carrying out material mixing on alkaline liquid injected into raw water by the alkalinity adding device;
the bottom of the filter tank body is provided with a cone bottom and a pneumatic feed liquid lifting pipe; one end of the pneumatic feed liquid lifting pipe penetrates into the bottom of the cone hopper, and the other end of the pneumatic feed liquid lifting pipe penetrates out of the filter tank body, extends upwards and extends to the top end of the filter tank body, then returns to the top of the filter tank body and enters the back flushing water control device; the pneumatic feed liquid lifting pipe is used for pumping raw water at the bottom of the filter tank body into the back flushing water control device;
the tail end of the pneumatic feed liquid lifting pipe is connected with an air diffuser, and the inner wall of the air diffuser is communicated with the pneumatic feed liquid lifting pipe through an air hole; the air diffuser is externally connected with a compressed air pipe at the same time, and the compressed air pipe is supplied with compressed air by an air compressor; the air diffuser is used for jetting the introduced compressed air into the bottom of the cone hopper of the filter body to fully mix the sulfur autotrophic combined filler, raw water and compressed air at the bottom of the filter body;
the filter material cleaning device is positioned below the backwash water control device, and the pneumatic feed liquid lifting pipe is used for conveying materials to the filter material cleaning device in a pumping mode;
the back flushing water control device is positioned at the top of the filter tank body, the outer cylinder wall of the back flushing water control device is embedded in the self-cleaning filter device, the back flushing water control device consists of two sleeves, the wall of the inner sleeve is provided with an opening and an adjusting plugboard, and the lower part of the outer cylinder wall of the back flushing water control device is connected with a back flushing drain pipe of the filter tank; the pneumatic feed liquid lifting pipe is particularly used for pumping a small amount of raw water, filtered by the inner sleeve of the backwash water control device, and then squeezed into the outer sleeve of the backwash water control device, and the inner adjusting plugboard is used for adjusting the backwash water amount up and down; the filter tank backwash drain pipe is used for draining to a factory sewage pipe network;
the waste collection port is connected with the pneumatic feed liquid lifting pipe through a valve and is used for transferring sulfur autotrophic combined filler residues in the filter tank.
2. The sulfur autotrophic process-based denitrification filter cleaning filter as defined in claim 1, wherein: the unpowered mixer comprises a rotary shaft fixed with the inner wall and positioned at the middle position and a helical blade in running fit with the rotary shaft.
3. The sulfur autotrophic process-based denitrification filter cleaning filter as defined in claim 2, wherein: and the backwash water control device is adjustable in backwash water quantity.
4. The sulfur autotrophic process-based denitrification filter cleaning filter as defined in claim 3, wherein: the water inlet main pipe comprises a horizontal pipe section and a vertical pipe section communicated with the horizontal pipe section; the unpowered mixer is embedded in the vertical pipeline section of the water inlet main pipe.
5. The sulfur autotrophic process-based denitrification filter cleaning filter as defined in claim 3, wherein: the self-cleaning filter device comprises a fiber filter cloth, a filter cloth cleaner, a rotary gear and a driving device;
the self-cleaning filter device is used for intercepting suspended matters through the fiber filter cloth in a filtering mode of the self-cleaning filter device, the suspended matters after interception are intercepted on the lower surface layer of the fiber filter cloth, and filtered water flows upwards and is finally discharged from the water producing pipe; the self-cleaning filter device is also used for carrying out back flushing through a preset self-control program when the suspended matter intercepted by the fiber filter cloth is accumulated to a preset weight, and discharging the intercepted suspended matter into the system, and at the moment, a rotary gear positioned at the top of the fiber filter cloth is mechanically driven by a driving device to rotate clockwise; one end of the filter cloth cleaner is provided with a fixed water suction pipe along the diameter direction of the fiber filter cloth, and the other end pipeline interface of the filter cloth cleaner is connected with the self-priming water pump.
6. A denitrification filter material cleaning treatment method based on a sulfur autotrophic process is characterized by comprising the following steps: a denitrification filter cleaning filter based on a sulfur autotrophic process according to any one of claims 1-5, comprising the following steps:
step 1, starting an alkalinity adding device on a water inlet main pipe to realize material mixing of alkali liquor injected into raw water of the water inlet main pipe; when the raw water passes through the water inlet main pipe, the raw water enters the water distribution device through the unpowered mixer, and the water distribution device uniformly distributes raw water flow at the bottom of the filter tank body; the filter material collecting cover filters raw water flow to retain filter materials; the unpowered mixer is embedded on a vertical pipeline of the water inlet main pipe and is used for mixing materials by alkaline liquid injected into raw water by the alkalinity adding device;
step 2, after raw water is uniformly distributed through the bottom of the filter tank body, the reverse flow passes through the sulfur autotrophic filter material layer and then reaches the bottom of the self-cleaning filter device; in the filtering mode of the self-cleaning filtering device, the water flow intercepts suspended matters through the fiber filter cloth, the intercepted suspended matters are intercepted on the lower surface layer of the fiber filter cloth, and the filtered water flows upwards and is finally discharged from the water producing pipe;
the step 1 and the step 2 finish the water passage process based on the sulfur autotrophic denitrification filter, namely, the operation from bottom to top;
implementing detection of whether the internal accumulated biomembrane of the current sulfur autotrophic combined filler exceeds a standard threshold value, if so, judging that the filter material layer of the current sulfur autotrophic combined filler is easy to be blocked, starting subsequent back flushing operation for removing the aged biomembrane, and specifically comprising:
step 3, starting an air diffuser communicated with the tail end of the pneumatic feed liquid lifting pipe, wherein the air diffuser is externally connected with a compressed air pipe at the same time, the compressed air pipe is supplied with compressed air by an air compressor, and the introduced compressed air at the moment floods into the bottom of a cone bucket of the filter body to fully mix sulfur autotrophic combined filler, raw water and compressed air at the bottom of the filter body; simultaneously, the pneumatic feed liquid lifting pipe is used for pumping a mixed material formed by fully mixing sulfur autotrophic combined filler, raw water and compressed air at the bottom of the filter tank body into the back flushing water control device to lift the mixed material to the top of the filter tank body;
step 4, the filter material cleaning device is positioned below the backwash water control device, and the mixed material pumped by the pneumatic feed liquid lifting pipe is conveyed to the filter material cleaning device; the mixed material comprises sulfur autotrophic combined filler, raw water and compressed air; the filter material cleaning device is internally provided with a staggered baffle plate, wherein the sulfur autotrophic combined filler slides down through the filter material cleaning device from top to bottom due to larger water weight and finally falls back to the filter material layer in the filter body, and the process finishes the operation of the filter material from top to bottom;
step 5; the back flushing water control device is positioned at the top of the filter tank body, the outer cylinder wall of the back flushing water control device is embedded in the self-cleaning filter device, the back flushing water control device consists of two sleeves, the wall of the inner sleeve is provided with an opening and an adjusting plugboard, and the lower part of the outer cylinder wall of the back flushing water control device is connected with a back flushing drain pipe of the filter tank; the filtered water after passing through the sulfur autotrophic combined packing passes through the filter material cleaning device from bottom to top and moves reversely with the falling sulfur autotrophic combined packing, so that the aim of cleaning is fulfilled, the washed water and a small amount of raw water pumped by the pneumatic feed liquid lifting pipe are squeezed into the outer sleeve of the backwash water control device after being filtered in the inner sleeve of the backwash water control device, at the moment, the backwash water quantity can be adjusted up and down through an adjusting plugboard positioned at the opening of the inner sleeve wall, and finally backwash wastewater is discharged to a sewage pipe network in a factory through a backwash water discharge pipe of the filter tank;
step 6, in the cleaning process of the sulfur autotrophic combined filter material, the filter tank body still works without stopping;
step 7, the waste collection port is connected with the pneumatic feed liquid lifting pipe through a valve and is used for transferring sulfur autotrophic combined filler residues in the filter tank body; in the transfer process of the sulfur autotrophic combined filler residues, only the air compressor is required to be started, the pipeline valve of the pneumatic feed liquid lifting pipe is closed, and the pipeline valve of the waste collection port is opened to realize the transfer treatment of the sulfur autotrophic combined filler residues in the filter tank body;
the step 3, the step 4, the step 5, the step 6 and the step 7 finish the cleaning process of the sulfur autotrophic combined filter material.
7. The denitrification filter cleaning treatment method based on the sulfur autotrophic process according to claim 6, wherein the denitrification filter cleaning treatment method is characterized in that: in the execution process of the step 2, when the suspended matter intercepted by the fiber filter cloth is accumulated to a preset weight, back flushing is carried out through a preset self-control program, the intercepted suspended matter is discharged into the system, and at the moment, a rotary gear positioned at the top of the fiber filter cloth is mechanically driven by a driving device to rotate clockwise; one end of the filter cloth cleaner is provided with a fixed water suction pipe along the diameter direction of the fiber filter cloth, the other end pipeline interface of the filter cloth cleaner is connected with the self-priming water pump, and the filter cloth cleaner is used for cleaning pollutants on the surface layer of the fiber filter cloth through the self-priming water pump so as to realize the simultaneous operation of cleaning and filtering.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117430263A (en) * | 2023-09-12 | 2024-01-23 | 同济大学建筑设计研究院(集团)有限公司 | High-pollution water rapid strengthening treatment system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002126410A (en) * | 2000-10-30 | 2002-05-08 | Ebara Corp | Moving bed type upflow filtration equipment |
| CN103833129A (en) * | 2014-03-04 | 2014-06-04 | 上海中冶技术工程有限公司 | Denitrification cloth filter |
| CN104925941A (en) * | 2015-06-23 | 2015-09-23 | 扬州市洁源排水有限公司 | Denitrification filter pool |
| CN108117151A (en) * | 2016-11-29 | 2018-06-05 | 中国石油化工股份有限公司 | A kind of moving bed denitrification denitrogenation filter tank and denitrogenation method |
| CN114506973A (en) * | 2022-01-28 | 2022-05-17 | 江南大学 | Alkalinity regulation and control method based on deep denitrification of sulfur autotrophic denitrification filter |
-
2023
- 2023-02-21 CN CN202310143521.1A patent/CN116462310A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002126410A (en) * | 2000-10-30 | 2002-05-08 | Ebara Corp | Moving bed type upflow filtration equipment |
| CN103833129A (en) * | 2014-03-04 | 2014-06-04 | 上海中冶技术工程有限公司 | Denitrification cloth filter |
| CN104925941A (en) * | 2015-06-23 | 2015-09-23 | 扬州市洁源排水有限公司 | Denitrification filter pool |
| CN108117151A (en) * | 2016-11-29 | 2018-06-05 | 中国石油化工股份有限公司 | A kind of moving bed denitrification denitrogenation filter tank and denitrogenation method |
| CN114506973A (en) * | 2022-01-28 | 2022-05-17 | 江南大学 | Alkalinity regulation and control method based on deep denitrification of sulfur autotrophic denitrification filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117430263A (en) * | 2023-09-12 | 2024-01-23 | 同济大学建筑设计研究院(集团)有限公司 | High-pollution water rapid strengthening treatment system and method |
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