CN112358031A - Water and gas distribution structure of biological filter - Google Patents
Water and gas distribution structure of biological filter Download PDFInfo
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- CN112358031A CN112358031A CN202011043229.5A CN202011043229A CN112358031A CN 112358031 A CN112358031 A CN 112358031A CN 202011043229 A CN202011043229 A CN 202011043229A CN 112358031 A CN112358031 A CN 112358031A
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Biodiversity & Conservation Biology (AREA)
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- Hydrology & Water Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention discloses a water and air distribution structure of a biological filter, belonging to the field of biological filters. A biological filter water distribution gas distribution structure includes: the water distribution main pipe and the air distribution main pipe are both laid in the biological filter, and the water distribution main pipe is used for introducing sewage into the water tank; the air distribution main pipe is used for introducing air into the water tank; the water distribution main pipe extends towards two sides to form a plurality of water distribution branch pipes, and a plurality of water distribution holes which are communicated up and down are formed in the water distribution branch pipes; the gas distribution main pipe extends towards two sides to form a plurality of gas distribution branch pipes, and a plurality of gas distribution holes with vertically upward openings are formed in the gas distribution branch pipes; and one air distribution hole is arranged right below each water distribution hole and corresponds to the water distribution hole.
Description
Technical Field
The invention relates to the field of biological filters, in particular to a water and air distribution structure of a biological filter.
Background
The biological aerated filter is used as a common sewage treatment process, and can effectively remove impurities such as suspended matters, ammonia nitrogen, organic matters and the like in sewage. In the aeration biological filter, the filter is generally filled with granular filler with high specific surface area, and the granular filler is used as a carrier for microbial film growth while filtering and intercepting suspended matters, so that organic matters, ammonia nitrogen and the like in sewage are degraded by biochemical reaction with a biological film on the surface of the filler.
In the water distribution and air distribution mode of the existing biological aerated filter, water distribution holes and aeration holes are arranged in a staggered mode, air entering a box body cannot be cut by water flow, tiny air bubbles cannot be formed effectively, the oxygen distribution in a water body finally causes the problems that the oxygen utilization rate of the water body in the box body is reduced, the energy consumption of equipment is increased and the like. In addition, the fallen sludge can naturally settle on the water distribution holes, when the water outlet pressure of the water distribution holes is not enough to eject the sludge, the water outlet is easy to block, the system resistance is increased, the water distribution is gradually uneven, the treatment efficiency is finally reduced, and the water quality of the effluent is poor.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a water and air distribution structure of a biological filter.
The purpose of the invention can be realized by the following technical scheme:
a biological filter water distribution gas distribution structure includes: the water distribution main pipe and the air distribution main pipe are both laid in the biological filter, and the water distribution main pipe is used for introducing sewage into the water tank; the air distribution main pipe is used for introducing air into the water tank;
the water distribution main pipe extends towards two sides to form a plurality of water distribution branch pipes, and a plurality of water distribution holes which are communicated up and down are formed in the water distribution branch pipes;
the gas distribution main pipe extends towards two sides to form a plurality of gas distribution branch pipes, and a plurality of gas distribution holes with vertically upward openings are formed in the gas distribution branch pipes;
and one air distribution hole is arranged right below each water distribution hole and corresponds to the water distribution hole.
Furthermore, the water distribution main pipe is provided with water outlet holes at equal intervals, the water outlet holes are communicated with the inside of the water distribution main pipe, and the openings of the water outlet holes are vertically upward.
Further, an aeration device is fixedly arranged outside the air distribution hole.
Furthermore, the distribution density of the aeration device is 25-75 per square meter.
Further, the aperture of the water outlet hole is 8-12 mm.
Further, the gap between the adjacent water outlet holes is 20-50 cm.
Through the water and gas distribution structure, the sewage obtains additional upward kinetic energy by the wind pressure generated by aeration, so that the flow speed of the sewage is accelerated, and the sedimentation of suspended sludge in the tank is effectively prevented. When the fallen sludge is settled to the water distribution holes, the sludge can be jacked up by the air pressure of aeration, so that the blockage of the water distribution holes is avoided; meanwhile, the flowing sewage is accelerated to cut the air flow into micro bubbles, so that the oxygen utilization rate of the system is improved, the sewage can obtain a sufficient aeration effect when the water flows out from the water distribution holes, and the load of the whole water and gas distribution system is further improved. Therefore, the water and gas distribution structure in the embodiment has the advantages of uniform distribution of dissolved oxygen, stable water inlet flux, uniform water distribution, avoidance of equipment blockage and the like.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic front view of a water and gas distribution structure of the present application;
FIG. 2 is a schematic top view of a water and gas distribution structure according to the present application;
FIG. 3 is a schematic diagram of water intake versus head loss according to the present application;
FIG. 4 is a schematic diagram of fan frequency versus head loss according to the present application;
fig. 5 is a schematic diagram illustrating a comparison of head loss between water distribution and air distribution aligned and misaligned.
The parts corresponding to the reference numerals in the figures are as follows:
1. distributing an air main pipe; 2. a water distribution main pipe; 3. a water distribution branch pipe; 4. water distribution holes; 5. distributing air holes; 6. a gas distribution branch pipe; 7. and (7) water outlet holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
As shown in fig. 1 and fig. 2, a water and air distribution structure of a biofilter includes: the biological filter comprises a water distribution main pipe 2 and an air distribution main pipe 1, wherein the water distribution main pipe 2 and the air distribution main pipe 1 are both laid in the biological filter, and the water distribution main pipe 2 is used for introducing sewage into a water tank; the air distribution main pipe 1 is used for introducing air into the water tank; the water distribution trunk pipes 2 extend towards two sides to form a plurality of water distribution branch pipes 3, and a plurality of water distribution holes 4 which are communicated up and down are formed in the water distribution branch pipes 3; the gas distribution main pipe 1 extends towards two sides to form a plurality of gas distribution branch pipes 6, and a plurality of gas distribution holes 5 with vertically upward openings are formed in the gas distribution branch pipes 6; and one air distribution hole 5 is arranged right below each water distribution hole 4 and corresponds to the water distribution hole.
In this example, the water distribution trunk pipe 2 is a main water inlet pipeline, and the water output end is distributed at each position of the aeration tank through the water distribution branch pipe 3. Similarly, the gas distribution main pipe 1 is a main gas inlet pipeline, and the gas output end is dispersed at all positions of the aeration tank through the gas distribution branch pipe 6. In the actual working process, the water pump pumps water, sewage flows into the water distribution branch pipes 3 through the water distribution main pipe 2 respectively, and meanwhile, after the fan is started, the water tank is ventilated through the air distribution main pipe 1 and the air distribution branch pipes 6. In the process, the water distribution holes 4 penetrate through the water distribution branch pipes 3 from top to bottom and are positioned right above the air distribution holes 5, so when the water pump and the fan are simultaneously opened, sewage enters the equipment through the water distribution holes 4, and the air pressure generated by aeration enables the sewage to obtain extra upward kinetic energy, thereby accelerating the flow velocity of the sewage and effectively preventing suspended sludge in the tank from settling. When the fallen sludge is settled to the water distribution holes 4, the sludge is jacked up by the aeration wind pressure, so that the water distribution holes 4 are prevented from being blocked; meanwhile, the flowing sewage is accelerated to cut the air flow into micro bubbles, so that the oxygen utilization rate of the system is improved, the sewage can obtain sufficient aeration effect when water is discharged from the water distribution holes 4, and the load of the whole water and gas distribution system is further improved. Therefore, the water and gas distribution structure in the embodiment has the advantages of uniform distribution of dissolved oxygen, stable water inlet flux, uniform water distribution, avoidance of equipment blockage and the like.
In addition, in some examples, as the fluctuation of the water inflow of the water and air distribution system increases, the water distribution device forms vortex due to unstable air pressure and water pressure, so that the water inflow is gradually unstable, the head loss increases, the energy consumption of the equipment operation is increased, and finally the water distribution of the equipment is uneven. In order to overcome the problems, the water distribution main pipe 2 is provided with water outlet holes 7 at equal intervals, the water outlet holes 7 are communicated with the inside of the water distribution main pipe 2, the openings of the water outlet holes 7 are vertical upwards, and the aperture of each water outlet hole 7 can be set to be 8-12 mm. The setting of the interval between adjacent apopore 7 should be considered to have divided the effect of establishing the apopore 7 on verifying water distribution main pipe 2, and its distance can be 20 ~ 50 centimetres, and in this embodiment, the interval of adjacent apopore 7 is 30 centimetres.
In order to compare the effect before and after the water outlet 7 is opened, the water and air distributing main pipe 1 with the water and air distributing main pipe 1 without the water outlet 7 is arranged for detection and comparison, wherein the experimental condition is set to control the air pressure of a proper fan and stabilize the water inflow at 30, 40, 50 and 60m in sequence3And h, controlling proper water inflow and stabilizing the frequency of the fan at 0, 30, 35, 40, 45 and 50Hz in sequence. And then measuring the height difference between the water level of the water separator and the equipment liquid level under each water inflow, and calculating the difference to obtain the required head loss in the water distribution process, wherein the test result is shown in fig. 3 and 4.
As can be seen from FIG. 3, when the frequency of the fan is fixed at 45Hz, the water inflow is 30m3When the water distribution main pipe 2 is not perforated, the liquid level of the water distributor is equal toThe difference between the liquid levels of the apparatus was about 330 mm. Theoretical analysis shows that the water inlet is unstable due to vortex formed by airflow impact in the water separator. And according to the analysis result of fig. 3, the difference between the liquid level of the water separator and the liquid level of the equipment after the water distribution main pipe 2 is opened is 240mm, the difference between the liquid levels before and after the opening is reduced by about 90mm, and at the moment, the water separator has no obvious vortex condition and stable water inlet, so that the vortex caused by air flow impact can be effectively reduced and the water distribution head loss can be reduced by opening the water separator at equal intervals on the main pipe.
As shown in FIG. 4, when the water inflow is set to a constant value, the constant value is, for example, 40m3And h, testing the water head loss of the water distribution of the two water distribution main pipes 2 under different fan frequencies, and showing that the water head loss of the water distribution main pipes 2 with the water outlet 7 and without the water outlet 7 is greatly different, the whole water head loss of the water distribution main pipes 2 without holes is over 400mm, and the whole water head loss of the water distribution main pipes 2 after holes are punched is about 300 mm.
As shown in FIG. 5, when the water inflow is set to a constant value, the constant value is, for example, 40m3And h, testing whether the water distribution holes are aligned with the head loss of the water distributed by the water distribution main pipe 2 under two states, wherein the head loss difference of the water distribution main pipe 2 with the aligned water distribution holes and the unaligned water distribution holes is larger, and the integral head loss with the aligned water distribution holes is larger than the head loss with the unaligned water distribution holes, and the difference is about 150 mm. Therefore, under the conditions of different fan frequencies and different water inflow, the water and gas distribution structure in the embodiment can effectively reduce the head loss of equipment on the basis of ensuring uniform water distribution.
In addition, in this embodiment, an aeration device is fixedly installed outside the air distribution holes 5, and is used for uniformly discharging the gas passing through the air distribution branch pipe 6 into the water body. Wherein the arrangement density of the aeration devices is 25-75 per square meter.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential 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 embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (6)
1. The utility model provides a biological filter water distribution gas distribution structure which characterized in that includes: the water distribution main pipe and the air distribution main pipe are both laid in the biological filter, and the water distribution main pipe is used for introducing sewage into the water tank; the air distribution main pipe is used for introducing air into the water tank;
the water distribution main pipe extends towards two sides to form a plurality of water distribution branch pipes, and a plurality of water distribution holes which are communicated up and down are formed in the water distribution branch pipes;
the gas distribution main pipe extends towards two sides to form a plurality of gas distribution branch pipes, and a plurality of gas distribution holes with vertically upward openings are formed in the gas distribution branch pipes;
and one air distribution hole is arranged right below each water distribution hole and corresponds to the water distribution hole.
2. The water and air distribution structure of a biofilter according to claim 1, wherein water outlet holes are formed in the water distribution trunk pipe at equal intervals, the water outlet holes are communicated with the interior of the water distribution trunk pipe, and the openings of the water outlet holes are vertically upward.
3. The water and air distribution structure of a biofilter according to claim 1, wherein an aeration device is fixedly installed outside the air distribution holes.
4. The water and air distribution structure of a biofilter according to claim 3, wherein the distribution density of said aeration devices is 25-75 per square meter.
5. The water and air distribution structure of a biofilter according to claim 2, wherein the aperture of the water outlet hole is 8-12 mm.
6. The water and air distribution structure of a biofilter according to claim 2, wherein the distance between adjacent water outlet holes is 20-50 cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011043229.5A CN112358031B (en) | 2020-09-28 | 2020-09-28 | Water and gas distribution structure of biological filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011043229.5A CN112358031B (en) | 2020-09-28 | 2020-09-28 | Water and gas distribution structure of biological filter |
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| CN112358031A true CN112358031A (en) | 2021-02-12 |
| CN112358031B CN112358031B (en) | 2023-10-03 |
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Citations (8)
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| CN2570266Y (en) * | 2002-06-20 | 2003-09-03 | 昆山华恒水处理设备技术有限公司 | Sewage treating equipment |
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| CN203461837U (en) * | 2013-08-08 | 2014-03-05 | 陈凤珠 | Water distributor |
| CN104192985A (en) * | 2014-09-19 | 2014-12-10 | 山东省农业科学院农业资源与环境研究所 | Backwash-free water distribution system for biological filter and control method thereof |
| CN206751501U (en) * | 2017-03-23 | 2017-12-15 | 河南国威市政工程有限公司 | A kind of new aerator |
| WO2018082238A1 (en) * | 2016-11-07 | 2018-05-11 | 江西盖亚环保科技有限公司 | Biological filter bed used for treating wastewater |
| CN210595448U (en) * | 2019-08-09 | 2020-05-22 | 苏州湛清环保科技有限公司 | Easy-to-overhaul light filter material denitrification biological filter |
| CN210710919U (en) * | 2019-07-30 | 2020-06-09 | 深水海纳水务集团股份有限公司 | High-load composite aerobic biological reaction device |
-
2020
- 2020-09-28 CN CN202011043229.5A patent/CN112358031B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2570266Y (en) * | 2002-06-20 | 2003-09-03 | 昆山华恒水处理设备技术有限公司 | Sewage treating equipment |
| US7736776B1 (en) * | 2006-04-04 | 2010-06-15 | Spielman Rick B | Method and system for removal of ammonia from wastewater by electrolysis |
| CN203461837U (en) * | 2013-08-08 | 2014-03-05 | 陈凤珠 | Water distributor |
| CN104192985A (en) * | 2014-09-19 | 2014-12-10 | 山东省农业科学院农业资源与环境研究所 | Backwash-free water distribution system for biological filter and control method thereof |
| WO2018082238A1 (en) * | 2016-11-07 | 2018-05-11 | 江西盖亚环保科技有限公司 | Biological filter bed used for treating wastewater |
| CN206751501U (en) * | 2017-03-23 | 2017-12-15 | 河南国威市政工程有限公司 | A kind of new aerator |
| CN210710919U (en) * | 2019-07-30 | 2020-06-09 | 深水海纳水务集团股份有限公司 | High-load composite aerobic biological reaction device |
| CN210595448U (en) * | 2019-08-09 | 2020-05-22 | 苏州湛清环保科技有限公司 | Easy-to-overhaul light filter material denitrification biological filter |
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Address after: J2C-1701, Phase II, Innovation Industrial Park, High-tech Zone, Hefei City, Anhui Province, 230088 Applicant after: Anhui Platts Ecological Environment Co.,Ltd. Address before: 230000 j2c-1701, phase II, innovation industrial park, high tech Zone, Hefei City, Anhui Province Applicant before: ANHUI PUSHI ECOLOGICAL ENVIRONMENT ENGINEERING Co.,Ltd. |
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