CN110589961B - Biological contact oxidation filter - Google Patents
Biological contact oxidation filter Download PDFInfo
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- CN110589961B CN110589961B CN201910904002.6A CN201910904002A CN110589961B CN 110589961 B CN110589961 B CN 110589961B CN 201910904002 A CN201910904002 A CN 201910904002A CN 110589961 B CN110589961 B CN 110589961B
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- aeration
- filter
- air
- inlet pipe
- cushion layer
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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
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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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 contact oxidation filter, which comprises a filter and a filter head plate arranged in the filter; the filter head plate divides the filter chamber into an aeration zone and an oxygen dissolving zone; the filter tank comprises a water inlet pipe communicated with the dissolved oxygen region; an air cushion layer is arranged in the oxygen dissolving area; the filter head plate comprises a plate body connected with the inner wall of the filter tank; the aeration filter rod is arranged on the plate body and is used for communicating the air cushion layer with the aeration area; and the flow guide pipe is arranged on the plate body and used for guiding the water in the oxygen dissolving area into the aeration area. The aeration effect is better through the matching arrangement of the air cushion layer, the water inlet pipe and the filter head plate; the pressure, the flow rate and the quantity of the air conveyed from the air cushion layer to the aeration area are equal, so that the aeration is more uniform; the equipment cost is reduced, and the effects of energy conservation and emission reduction are achieved.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a biological contact oxidation filter.
Background
In recent years, with the rapid development of social economy, the amount of pollutants discharged to water bodies is increased year by year, so that natural water bodies such as riverways, lakes, reservoirs and the like are polluted to different degrees, and the pollution control of the natural water bodies also becomes a great problem to be solved urgently; the biomembrane contact oxidation method is one of important methods for restoring polluted natural water, can effectively remove pollutants such as organic matters, ammonia nitrogen and the like in the natural water, reduces the total amount of the pollutants and purifies the natural water.
The biological carrier is a core component of a biological membrane contact oxidation method, the existing biological filter tank is characterized in that the biological carrier is installed on an installation frame and then sinks into the tank in order to enable the biological membrane to be in better contact with polluted natural water, the biological carrier and sewage form three-dimensional all-dimensional contact, organic matters of the sewage are reacted in order to enable microorganisms to better survive, the water purifying effect is achieved, air is required to be introduced into the filter tank frequently, and the oxygen content in the sewage is increased.
And because the pollution is serious day by day, the sewage that needs to be handled is more and more, and the volume of biological filter is also bigger and more, if only install an air pump, again through installing a plurality of intake pipes in the filter and carry out the aeration, then can be because the atmospheric pressure that is close to the air pump is big and the atmospheric pressure of keeping away from the air pump is little, and lead to the inhomogeneous problem of filter aeration, if install a plurality of air pumps, not only equipment cost can increase, energy resource consumption also can greatly increased.
Disclosure of Invention
The invention provides a biological contact oxidation filter with good aeration effect to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a biological contact oxidation filter comprises a filter and a filter head plate arranged in the filter; the filter head plate divides the filter chamber into an aeration zone and an oxygen dissolving zone; the filter chamber comprises a water inlet pipe communicated with the dissolved oxygen region; an air cushion layer is arranged in the oxygen dissolving area; the filter head plate comprises
The plate body is connected with the inner wall of the filter tank;
the aeration filter rod is arranged on the plate body and is used for communicating the air cushion layer with the aeration area;
the guide pipe is arranged on the plate body and used for guiding water in the oxygen dissolving area into the aeration area;
through the matching arrangement of the air cushion layer, the water inlet pipe and the filter head plate, more oxygen can be dissolved in the sewage in the oxygen dissolving area under the high-pressure action of the air cushion layer, the oxygen content in the sewage is more, and the aeration effect is better; moreover, the air pressure at each part of the air cushion layer is equal, so that the pressure, the flow rate and the quantity of the air conveyed to the aeration area from the air cushion layer are equal, the aeration is more uniform, and the aeration effect is better; only one air pump is needed to be installed to provide sufficient air supply for the air cushion layer, a plurality of air pumps are not needed to be installed, the equipment cost is greatly reduced, energy consumed by equipment operation is reduced, the operation cost is reduced, and the effects of energy conservation and emission reduction are achieved; through being linked together inlet tube and dissolved oxygen district to make sewage advance to go into dissolved oxygen district, dissolved a large amount of oxygen in the dissolved oxygen district after, just can be carried to the aeration district, the aeration effect is better.
Further, a pipe orifice of the water inlet pipe, which is positioned in the oxygen dissolving area, is immersed in water; through the setting of above-mentioned structure for the inlet tube can not be linked together with the air cushion layer, thereby avoids the gas in the air cushion layer to spill from the inlet tube, guarantees that the atmospheric pressure in the air cushion layer keeps unchanged, has better aeration effect throughout, also avoids the formation of air lock simultaneously, guarantees that sewage can be smooth carry into dissolved oxygen in the district through the inlet tube.
Further, the length of the aeration filter rod is smaller than that of the flow guide pipe; through the setting of above-mentioned structure for the air in the air cushion layer only can filter the pole through the aeration and get into the aeration district and realize the aeration, then have water all the time in the water conservancy diversion pipe and make the water intercommunication each other of aeration district and dissolved oxygen district, thereby make the oxygen in the dissolved oxygen district can spread to the aeration district in, play the effect that improves the oxygen content in aeration district.
Furthermore, the plurality of aeration filter rods and the plurality of flow guide pipes are sequentially arranged in a staggered manner; through the structure, the aeration is more uniform, and simultaneously, sewage can form water flow of circular flow, so that the sewage rich in oxygen in the oxygen dissolving zone can flow into the aeration zone, and further the purification effect of the filter tank on the sewage is better.
Furthermore, an exhaust hole is arranged on one side of the aeration filter rod close to the aeration zone and is positioned in the oxygen dissolving zone; through the arrangement of the structure, air in the air cushion layer can be discharged into the aeration area through the exhaust holes, so that the aeration effect is achieved, the air can be temporarily input after the air cushion layer is formed, the good aeration effect can still be achieved, and the energy consumption is reduced.
Furthermore, an aeration head cover for increasing the aeration range is arranged at one end of the aeration filter rod positioned in the aeration zone; through the arrangement of the structure, the aeration effect is further enhanced.
Furthermore, the aeration head hood comprises a cover shell and an aeration gap arranged along the circumferential direction of the cover shell; through the arrangement of the structure, the air flow sprayed out of the aeration head cover is more uniform, the spraying range is wider, and a better aeration effect is achieved.
Furthermore, the aeration head hood also comprises a hood bottom matched with the hood shell and an aeration channel arranged on the hood bottom; through the setting of above-mentioned structure for the air can be earlier toward spraying all around, and the radiation scope is wider, has increased the dwell time of air in the sewage, has further strengthened the aeration effect.
Further, an aeration sealing gasket is sleeved on the aeration filter rod; the aeration filter rod is screwed with an aeration fastener; through the setting of above-mentioned structure for form sealed cooperation between aeration filter rod and the plate body, avoid leaking gas, guarantee that the air cushion layer has sufficient atmospheric pressure all the time, the dismouting of aeration filter rod is also very convenient simultaneously, is convenient for change.
Further, the air cushion device also comprises an air inlet pipe and an air supply piece, wherein one end of the air inlet pipe is communicated with the air cushion layer, and the air supply piece is communicated with the other end of the air inlet pipe; through the arrangement of the structure, the aeration work of the whole filter tank can be realized by only one air supply piece, and the equipment cost is reduced.
In conclusion, the aeration effect is better through the matching arrangement of the air cushion layer, the water inlet pipe and the filter head plate; the pressure, the flow rate and the quantity of the air conveyed from the air cushion layer to the aeration area are equal, so that the aeration is more uniform; the equipment cost is reduced, and the effects of energy conservation and emission reduction are achieved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an enlarged schematic view of FIG. 1 at A;
FIG. 3 is a schematic longitudinal perspective sectional view of the present invention;
FIG. 4 is an enlarged schematic view of FIG. 3 at B;
FIG. 5 is a cross-sectional view of the present invention;
FIG. 6 is a schematic perspective view of an aeration filter head according to the present invention;
FIG. 7 is a schematic perspective sectional view of an aeration filter head according to the present invention;
fig. 8 is a schematic perspective view of the flow guide member of the present invention.
Detailed Description
As shown in figures 1-8, a biological contact oxidation filter comprises a filter 1, a film hanging device, a water inlet and outlet part and an aeration device; in the embodiment, the filter 1 is formed by pouring cement and is provided with a hollow cubic structure with an opening at the upper part, and in other embodiments, the filter can also be made of metal materials or other materials; the aeration device comprises a filter head plate 4 and an air source assembly, wherein the filter head plate 4 is arranged in the filter 1 to divide the filter into an aeration zone 11 and an oxygen dissolving zone 12, and the air source assembly is used for conveying air into the filter to achieve the purpose of aeration; the film hanging device comprises a mounting frame 21, a mounting rod 20 and a filler 22; the packing 22 is arranged on the mounting rod 20, the mounting rod is arranged on the mounting frame 21, the packing and the mounting rod are detachably connected, so that the assembly, disassembly, maintenance and replacement are convenient, and clamping is adopted in the embodiment; the mounting frame 21 is mounted on the filter head plate 4 so that the packing 22 is submerged by the sewage; in other embodiments, the biofilm culturing device can also be a suspension ball or a filter material and the like attached with microorganisms; the water inlet and outlet part comprises a water inlet pipe 27, a water outlet pipe 28 and a suction piece 29; the water inlet pipe 27 is used for guiding sewage into the filter tank, a pipe orifice at one end of the water inlet pipe is positioned outside the filter tank and is higher than the side wall of the filter tank, so that the sewage is prevented from flowing backwards, the other end of the water inlet pipe is communicated with the filter tank, and the pipe orifice is positioned in the dissolved oxygen zone 12 and is immersed in the sewage, so that the sewage can firstly enter the dissolved oxygen zone, is dissolved into more oxygen and then flows into the aeration zone for further aeration, and the aeration effect is better; one end of the water outlet pipe 28 is communicated with the suction piece 29, the other end is communicated with the aeration zone 11, and the pipe orifice is positioned at the upper layer of the sewage, so that the sewage is pumped away to be relatively clean water after treatment; the suction member 29 is a water pump purchased in the market, which is a prior art and therefore will not be described herein, and therefore, the drawings in the specification are not drawn in detail, and only a cube is drawn as an illustration, it should be noted that the dimensions of a part of the structure in the drawings are particularly enlarged for clarity of representation, and are not actual dimensions in production application, and hereinafter, similar pumps or motors are also the same.
Specifically, the filter head plate 4 comprises a plate body 41, an aeration filter head 42 and a flow guide piece 43; the plate body 41 is arranged in the filter tank 1, the plate body is in sealing fit with the tank wall of the filter tank, the filter tank 1 is divided into an aeration zone 11 and an oxygen dissolving zone 12, and the mounting frame 21 is arranged on the plate body and is positioned in the aeration zone; the plate body 41 is provided with a plurality of mounting holes 411, the aeration filter heads 42 and the flow guide pieces 43 are mounted on the plate body through the mounting holes, the plate body is uniformly provided with the plurality of aeration filter heads 42 and the plurality of flow guide pieces 43, and the plurality of aeration filter heads 42 and the plurality of flow guide pieces 43 are sequentially and mutually staggered, so that the aeration effect is better and the aeration is more uniform; the air supply assembly comprises an air supply part 35 and an air inlet pipe 36; one end of the air inlet pipe 36 is communicated with the dissolved oxygen region 12, the pipe orifice is close to the lower surface of the plate body 41, and the other end extends out of the filter tank 1 and is communicated with the output end of the air supply member 35 arranged outside the filter tank, so that the pipe orifice of the air inlet pipe positioned outside the filter tank is higher than the tank wall of the filter tank, and even if a one-way valve is not arranged at the pipe orifice of the air inlet pipe positioned in the dissolved oxygen region, the sewage does not need to be worried about to be discharged in a counter-flow manner through the air inlet pipe, and the equipment cost and the installation difficulty are reduced; the air supply member 35 is a commercially available air compressor or blower, and can supply a sufficient amount of high-pressure air, which is prior art and therefore not described herein.
Specifically, the aeration filter head 42 comprises an aeration filter rod 421, an aeration head cover 422, an aeration sealing gasket 423 and an aeration fastener 424; the aeration filter rod 421 is provided in a hollow cylindrical structure, the aeration filter rod 421 is communicated with the aeration head cover 422, and the aeration filter rod 421 and the aeration head cover 422 are integrally formed, the aeration filter rod can pass through the mounting hole 411 on the plate body 41, and the aeration head cover cannot pass through the mounting hole; the end of the aeration filter rod close to the aeration head hood is provided with external threads, the aeration fastening piece is in a regular hexagon shape, the end is provided with a through hole 4241 for the aeration filter rod to pass through, and the inner wall of the through hole is provided with internal threads, so that the aeration fastening piece and the aeration filter rod can form threaded connection and matching; during installation, the aeration filter rod is sleeved with the aeration sealing gasket 423, the aeration filter rod is inserted into the installation hole 411, then the aeration filter rod is sleeved with the aeration sealing gasket, finally, the aeration fastening piece is screwed with the aeration filter rod to complete installation and fixation of the aeration filter head, and meanwhile, the aeration filter head is in sealing fit with the plate body 41, so that gas and water can not pass through the installation hole provided with the aeration filter head; in other embodiments, an aeration filter pocket 425 may be installed, which is screwed to one end of the aeration filter rod 421 away from the aeration head cap 422, and the aeration filter pocket 425 may be screwed to the lower end of the aeration filter rod after the aeration fastener fixes the aeration filter rod to the plate body 41; or, the aeration filter pocket and the aeration filter rod can be formed integrally, but the diameter of the aeration filter pocket is smaller than that of the mounting hole 411, so that the aeration filter pocket is convenient to mount.
Further, the aeration head cover 422 comprises a cover shell 4221 and a cover bottom 4222 connected with the cover shell, wherein the side surface of the cover shell is provided with an arc-shaped structure, the side surface of the cover shell is provided with a plurality of aeration gaps 4223, the aeration gaps are uniformly formed along the circumferential direction of the outer surface of the side surface of the cover shell, the cover bottom 4222 is provided with a plurality of aeration channels 4224, and the aeration channels are uniformly formed along the circumferential direction of the cover bottom; the air flow sprayed from the aeration gap and the aeration channel is more uniform, and simultaneously can be sprayed to the periphery of the aeration head cover, so that the coverage area of the air is wider, the installation of the filter head is reduced, the cost is reduced, meanwhile, the retention time of the air in water is prolonged, the oxygen is more easily dissolved into the water, and the aeration effect is better; preferably, the aeration channel is radially and obliquely arranged downwards, so that gas can be sprayed out obliquely downwards along the aeration channel, the retention time of air in sewage is further prolonged, and the aeration effect is improved; at least part of the surface of the cover bottom 4222 extends outwards to form a sealing boss 4225, the sealing boss can better press the aeration sealing gasket 423 on the plate body 41 to achieve a better sealing effect, a gap can be reserved between the cover bottom 4222 and the plate body 41, and air flow rushed out of an aeration channel can smoothly enter the aeration area 11 without being blocked, the jet is farther, and the coverage is wider; an air outlet hole 4211 is arranged on the upper part (namely, the side close to the aeration head cover 422) of the aeration filter rod 421, and the air outlet hole is positioned in the oxygen dissolving area 12; the aeration filter bag 425 is provided with a plurality of dirt filtering holes 4251, so that air and water can pass through the dirt filtering holes and dirt cannot pass through the dirt filtering holes.
Specifically, the flow guide member 43 includes a flow guide tube 431, a flow guide head cover 432, a flow guide gasket 433, and a flow guide fastening member 434; the flow guide pipe 431 is formed in a hollow cylindrical structure, the flow guide pipe 431 is communicated with the flow guide head cover 432, the flow guide pipe 431 and the flow guide head cover are integrally formed, the flow guide pipe can penetrate through the mounting hole 411 on the plate body 41, and the flow guide head cover cannot penetrate through the mounting hole; the end of the flow guide pipe close to the flow guide head cover is provided with external threads, the flow guide fastener 434 is in a regular hexagon shape and is provided with a through hole for the flow guide pipe to pass through, and the inner wall of the through hole is provided with internal threads, so that the flow guide fastener and the flow guide pipe can form threaded connection and matching; during installation, cup joint water conservancy diversion sealed pad 433 on the honeycomb duct, insert the honeycomb duct in the mounting hole 411 again, then cup joint a water conservancy diversion sealed pad on the honeycomb duct again, at last can accomplish the installation of water conservancy diversion spare with water conservancy diversion fastener and honeycomb duct spiro union again and fix, also formed sealed cooperation between water conservancy diversion spare and the plate body 41 simultaneously for gas and water all can't pass through from the mounting hole of installing the water conservancy diversion spare.
Further, the length of the draft tube 431 is longer than that of the aeration filter rod 421; the deflector cap 432 is provided with a plurality of deflector ports 4321 which are uniformly arranged along the circumferential direction of the deflector cap, so that sewage flushed from the deflector ports can impact all around, and as the deflector pieces and the aeration filter heads are sequentially and mutually staggered, the sewage sprayed from the deflector pieces to all around can collide with air sprayed from the aeration filter heads to all around, thereby further improving the aeration effect; the caliber of the flow guide opening is larger, so that dirt can enter the aeration area more easily through the flow guide opening and is not easy to block;
the operation steps and the principle are as follows: the sewage enters the dissolved oxygen zone 12 through the water inlet pipe 27, and after the dissolved oxygen zone is filled with the sewage, the sewage enters the aeration zone 11 through the aeration filter head 42 and the flow guide piece 43, and after the sewage reaches the preset water level and submerges the film hanging device, the aeration device can be started for aeration; specifically, when the air supply member 35 is activated, air enters the oxygen dissolving zone 12 through the air inlet pipe 36, because the filter head plate 4 is in sealing fit with the filter, air can be attached to the lower surface of the plate body 41 under the action of buoyancy, and an air cushion layer 40 can be formed below the plate body 41 along with the continuous conveying of the air into the oxygen dissolving zone, water in the dissolved oxygen region is pressed into the aeration region 11 through the aeration filter head 42 and the flow guide piece 43, the air cushion layer 40 in the dissolved oxygen region is thicker and higher, and the pressure is higher and higher (according to different conditions such as the area and the depth of the filter chamber, the impact force of the required high-pressure air flow is different, and according to the requirement of the actual condition, the thickness of the air cushion layer 40 can be changed by installing aeration filter rods with different lengths, so that different air pressure requirements under different conditions are met, and accordingly, the aeration filter rods can be arranged in a telescopic mode, and the adaptability is better); due to the increase of the pressure in the dissolved oxygen region, the solubility of oxygen in the air of the air cushion layer in the sewage is greatly increased.
Then, because the length of the flow guide pipe 431 is greater than the length of the aeration filter rod 421, as the thickness of the air cushion layer 40 becomes thicker and thicker, the thickness of the air cushion layer 40 is greater than the length of the aeration filter rod 421, at this time, the air is pressed into the aeration filter rod under the action of pressure, enters the aeration head cover 422 communicated with the aeration filter rod, and is sprayed out from the aeration gap 4223 and the aeration channel 4224 on the aeration head cover, so as to realize the purpose of aerating the sewage in the aeration area, because the pressures at all places of the air cushion layer are equal, the volume, the flow rate and the pressure of the air input to all places of the aeration area are equal, the aeration is ensured to be uniform at all places, and the aeration effect is better; the pipe orifice at one end of the water outlet pipe 28 extends into the aeration zone, the purified water which is processed by aeration purification at the upper layer of the aeration zone is pumped out through the pumping piece 29, and along with the pumping piece pumping out the water in the aeration zone, the sewage is continuously input at the position of the water inlet pipe, thereby realizing dynamic balance and continuously processing the sewage
At this time, although the formation of the air cushion layer 40 causes the aeration filter rod 421 to no longer contact with the sewage in the dissolved oxygen region 12, and only air enters the aeration region through the aeration filter rod, the length of the flow guide pipe 431 is longer than that of the aeration filter rod, so that the pipe opening at the lower end of the flow guide pipe is always immersed in the sewage in the dissolved oxygen region 12, so that after new sewage enters the dissolved oxygen region, the sewage in which a large amount of oxygen is dissolved originally in the dissolved oxygen region is pressed into the aeration region through the flow guide member, so that microorganisms in the aeration region have more sufficient oxygen, can better decompose organic matters in the sewage, and have a better sewage purification effect; moreover, the mode can reduce the frequency and intensity of aeration, and the sewage which is also dissolved with a large amount of oxygen only by the oxygen dissolving area can also play a role in sufficient water purification, which is explained as follows:
after the air cushion layer 40 is formed, because the air pressure in the oxygen dissolving zone 12 is higher, sewage entering the oxygen dissolving zone can dissolve more oxygen, and then enters the aeration zone 11 through the guide pipe 431, sufficient oxygen can be provided for microorganisms, and because the aeration filter rod 421 is provided with the exhaust hole 4211, during and after the formation of the air cushion layer, a part of air always enters the aeration filter rod through the exhaust hole, and then enters the aeration zone to aerate the sewage in the aeration zone, the two modes are matched (the sewage is dissolved with more oxygen by pressurization and the exhaust hole continuously assists in aeration), the oxygen requirement of the microorganisms in the aeration zone can be met, so that the work of the air supply piece 35 can be suspended after the air cushion layer is formed, after the pressure of the air cushion layer is reduced to a preset value, the air supply piece is restarted, the air supply piece only needs to be intermittently started, and the energy consumption of the equipment is greatly reduced, the effects of energy conservation and emission reduction are achieved; and this kind of mode makes the flow of sewage in the aeration zone gentler, avoids filler 22 to appear the condition of local pile-up, guarantees that the microorganism in each region in aeration zone distributes evenly, plays better aeration water purification's effect.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (9)
1. A biological contact oxidation filter comprises a filter (1) and a filter head plate (4) arranged in the filter (1); the filter head plate (4) divides the filter tank (1) into an aeration zone (11) and an oxygen dissolving zone (12); the method is characterized in that: the filter tank (1) comprises a water inlet pipe (27) communicated with the oxygen dissolving zone (12); an air cushion layer (40) is arranged in the oxygen dissolving area (12); the filter head plate (4) comprises
A plate body (41) connected with the inner wall of the filter tank (1);
the aeration filter rod (421) is arranged on the plate body (41) and is used for communicating the air cushion layer (40) with the aeration zone (11);
a flow guide pipe (431) which is arranged on the plate body (41) and is used for guiding the water in the oxygen dissolving area (12) into the aeration area (11);
the pipe orifice of the water inlet pipe (27) is positioned in the oxygen dissolving area (12) and is immersed in the sewage, and the water inlet pipe (27) is used for guiding the sewage into the oxygen dissolving area (12) so that the sewage can firstly enter the oxygen dissolving area (12) and then flow into the aeration area (11) after more oxygen is dissolved;
the air-supply device also comprises an air inlet pipe (36) and an air supply piece (35), wherein one end of the air inlet pipe (36) is communicated with the air cushion layer (40), and the other end of the air inlet pipe (36) is communicated with the air supply piece;
the water inlet pipe (27) is located and arranged below the air cushion layer (40), and the air inlet pipe (36) is located and arranged in the air cushion layer (40).
2. The biological contact oxidation filter of claim 1, wherein: the water inlet pipe (27) is positioned in the oxygen dissolving area (12) and the pipe orifice is immersed in water.
3. The biological contact oxidation filter of claim 2, wherein: the length of the aeration filter rod (421) is less than that of the draft tube (431).
4. The biological contact oxidation filter of claim 3, wherein: the aeration filter rods (421) and the draft tubes (431) are arranged in a staggered mode in sequence.
5. The biological contact oxidation filter of claim 4, wherein: an exhaust hole (4211) is formed in one side, close to the aeration zone (11), of the aeration filter rod (421), and the exhaust hole is located in the oxygen dissolving zone (12).
6. The biological contact oxidation filter according to any one of claims 1 to 5, wherein: an aeration head cover (422) is arranged at one end of the aeration filtering rod (421) positioned in the aeration zone (11).
7. The biological contact oxidation filter of claim 6, wherein: the aeration head cover (422) comprises a cover shell (4221) and an aeration gap (4223) which is arranged along the circumferential direction of the cover shell (4221).
8. The biological contact oxidation filter of claim 7, wherein: the aeration head cover (422) also comprises a cover bottom (4222) matched with the cover shell (4221) and an aeration channel (4224) arranged on the cover bottom (4222).
9. The biological contact oxidation filter of claim 8, wherein: an aeration sealing gasket (423) is sleeved on the aeration filter rod (421); the aeration filter rod (421) is screwed with an aeration fastener (424).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910904002.6A CN110589961B (en) | 2019-09-23 | 2019-09-23 | Biological contact oxidation filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910904002.6A CN110589961B (en) | 2019-09-23 | 2019-09-23 | Biological contact oxidation filter |
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| CN110589961A CN110589961A (en) | 2019-12-20 |
| CN110589961B true CN110589961B (en) | 2022-08-12 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1689985A (en) * | 2004-04-19 | 2005-11-02 | 安乐工程有限公司 | Aeration biological filter tank and arraying method of aeration filtering head |
| CN102390887A (en) * | 2011-10-13 | 2012-03-28 | 惠州市铭博实业发展有限公司 | Flap aerated biological filter and wastewater treatment method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201169555Y (en) * | 2007-12-28 | 2008-12-24 | 深圳市清泉水业股份有限公司 | Multifunctional filter tube |
| CN203307111U (en) * | 2013-05-06 | 2013-11-27 | 江苏正本净化节水科技实业有限公司 | Biological aerated filter |
| CN206359305U (en) * | 2016-12-23 | 2017-07-28 | 净化控股集团股份有限公司 | A kind of integrated form water distribution distribution device |
-
2019
- 2019-09-23 CN CN201910904002.6A patent/CN110589961B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1689985A (en) * | 2004-04-19 | 2005-11-02 | 安乐工程有限公司 | Aeration biological filter tank and arraying method of aeration filtering head |
| CN102390887A (en) * | 2011-10-13 | 2012-03-28 | 惠州市铭博实业发展有限公司 | Flap aerated biological filter and wastewater treatment method thereof |
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| CN110589961A (en) | 2019-12-20 |
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