CN112358031B - Water and gas distribution structure of biological filter - Google Patents
Water and gas distribution structure of biological filter Download PDFInfo
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- CN112358031B CN112358031B CN202011043229.5A CN202011043229A CN112358031B CN 112358031 B CN112358031 B CN 112358031B CN 202011043229 A CN202011043229 A CN 202011043229A CN 112358031 B CN112358031 B CN 112358031B
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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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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- 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 application discloses a water and gas distribution structure of a biological filter, and belongs to the field of biological filters. A water and gas distribution structure of a biological filter comprises: the water distribution main pipe and the air distribution main pipe are paved 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 to two sides to form a plurality of water distribution branch pipes, and a plurality of water distribution holes penetrating up and down are formed in the water distribution branch pipes; the gas distribution main pipe extends to 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 air distribution hole.
Description
Technical Field
The application relates to the field of biological filters, in particular to a water and gas distribution structure of a biological filter.
Background
The aeration biological filter is used as a common sewage treatment process, and can effectively remove suspended matters, ammonia nitrogen, organic matters and other impurities in sewage. In the aeration biological filter, the filter is generally filled with particle filler with high specific surface area, and the filter blocks suspended matters and is used as a carrier for microbial film growth, so that organic matters, ammonia nitrogen and the like in sewage and biological films on the surfaces of the filler are subjected to biochemical reaction to be degraded.
In the existing aeration biological filter tank water distribution and gas distribution mode, water distribution holes and aeration holes are arranged in a staggered mode, air entering the tank body cannot be cut by water flow, tiny bubbles cannot be effectively formed, uneven oxygen distribution in the water body finally causes the problems of reduced oxygen utilization rate of the water body in the tank body, increased equipment energy consumption and the like. In addition, the fallen sludge naturally settles on the water distribution holes, when the water outlet pressure of the water distribution holes is insufficient to eject the sludge, the water outlet is easy to be blocked, the system resistance is increased, the water distribution is gradually uneven, the treatment efficiency is finally reduced, and the water quality of the discharged water is deteriorated.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a water and gas distribution structure of a biological filter.
The aim of the application can be achieved by the following technical scheme:
a water and gas distribution structure of a biological filter comprises: the water distribution main pipe and the air distribution main pipe are paved 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 to two sides to form a plurality of water distribution branch pipes, and a plurality of water distribution holes penetrating up and down are formed in the water distribution branch pipes;
the gas distribution main pipe extends to 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 air distribution hole.
Further, equidistant water outlet holes are formed in the water distribution main pipe, 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 upwards.
Further, an aeration device is fixedly arranged outside the air distribution holes.
Further, 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 wind pressure generated by aeration can enable the sewage to obtain additional upward kinetic energy, so that the sewage flow speed is increased, and suspended sludge settlement in a pond is effectively prevented. When the shed sludge is settled to the water distribution holes, the aeration wind pressure can jack up the sludge, so that the blockage of the water distribution holes is avoided; meanwhile, the flowing sewage can be quickened to cut the air flow into tiny bubbles, so that the oxygen utilization rate of the system is improved, the sewage can obtain a sufficient aeration effect when being discharged from the water distribution holes, and the load of the whole water and air 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 inflow, uniform water distribution, equipment blockage avoidance and the like.
Drawings
The application is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a water and gas distribution structure in front view of the present application;
FIG. 2 is a schematic top view of the water and gas distribution structure of the present application;
FIG. 3 is a schematic diagram of the relationship between water inflow and head loss according to the present application;
FIG. 4 is a schematic diagram of fan frequency versus head loss in accordance with the present application;
fig. 5 is a schematic diagram showing head loss contrast when water distribution and air distribution are aligned and when they are not aligned.
The components corresponding to the reference numerals in the figures are as follows:
1. a gas distribution dry pipe; 2. a water distribution main pipe; 3. a water distribution branch pipe; 4. a water distribution hole; 5. air holes are distributed; 6. a gas distribution branch pipe; 7. and a water outlet hole.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present application and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
As shown in fig. 1 and fig. 2, a water and air distribution structure of a biological filter includes: the biological filter tank 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 tank, and the water distribution main pipe 2 is used for introducing sewage into the water tank; the air distribution main pipe 1 is used for introducing air into the water tank; the water distribution main pipe 2 extends to two sides to form a plurality of water distribution branch pipes 3, and a plurality of water distribution holes 4 penetrating up and down are formed in the water distribution branch pipes 3; the gas distribution main pipe 1 extends to 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 air distribution hole.
In the example, the water distribution main pipe 2 is a water inlet main pipe, and water flow output ends are distributed at all positions of the aeration tank through the water distribution branch pipes 3. Similarly, the gas distribution main pipe 1 is a main gas inlet pipe, and gas output ends are distributed at all positions of the aeration tank through the gas distribution branch pipes 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 pipes 2 respectively, and after the fan is started, the sewage is ventilated into the water tank through the air distribution main pipes 1 and the air distribution branch pipes 6. In the process, the water distribution holes 4 vertically penetrate through the water distribution branch pipe 3 and are positioned right above the water distribution holes 5, so that when the water pump and the fan are simultaneously started, sewage enters the device through the water distribution holes 4, and the wind pressure generated by aeration enables the sewage to obtain additional upward kinetic energy, so that the sewage flow rate is accelerated, and suspended sludge in the tank is effectively prevented from settling. When the shed sludge is settled to the water distribution holes 4, the aeration wind pressure can jack up the sludge, so that the water distribution holes 4 are prevented from being blocked; meanwhile, the flowing sewage can be quickened to cut the air flow into tiny bubbles, so that the oxygen utilization rate of the system is improved, the sewage can obtain a sufficient aeration effect when water is discharged from the water distribution holes 4, and the load of the whole water distribution and air 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 inflow, uniform water distribution, equipment blockage avoidance and the like.
In addition, in some examples, as the fluctuation of the water inflow of the water and gas distribution system increases, the water distribution device forms vortex due to unstable air pressure and water pressure, so that water inflow is gradually unstable, head loss increases, the running energy consumption of equipment is increased, and finally uneven water distribution of the equipment is caused. In order to overcome the above problems, the water distribution main pipe 2 is provided with equally spaced water outlet holes 7, the water outlet holes 7 are communicated with the inside of the water distribution main pipe 2, and the openings of the water outlet holes 7 are vertically upward, wherein the aperture of the water outlet holes 7 can be set to be 8-12 mm. The arrangement of the interval between the adjacent water outlets 7 should be referred to as verifying the effect of opening the water outlet 7 on the water distribution main 2, the distance may be 20-50 cm, and in this embodiment, the interval between the adjacent water outlets 7 is 30 cm.
In order to compare the effect before and after the water outlet 7 is arranged, the water and air distribution main pipe 1 with the water outlet 7 is detected and compared with the water and air distribution main pipe 1 without the water outlet 7, wherein the test conditions are that the wind pressure of a proper fan is controlled and the water inflow is stabilized at 30, 40, 50 and 60m in sequence 3 And/h, controlling proper water inflow and sequentially stabilizing the fan frequency at 0, 30, 35, 40, 45 and 50Hz. And then measuring the height difference between the liquid level of the water separator and the liquid level of the equipment under each water inflow, and calculating the difference to obtain the water head loss required in the water distribution process, wherein the test results are shown in fig. 3 and 4.
As can be seen from FIG. 3, when the fan frequency is set to 45Hz, the water inflow is 30m 3 At the time of/h, the difference between the liquid level of the water separator and the liquid level of the equipment is about 330mm when the water distribution main pipe 2 is not perforated. From theoretical analysis, the water separator forms vortex due to airflow impact, so that water inflow is unstable. According to the analysis result of fig. 3, the difference between the liquid level of the water distributor and the liquid level of the equipment after the water distribution main pipe 2 is perforated is 240mm, the liquid level difference before and after the perforation is reduced by about 90mm, and the water distributor has no obvious vortex condition and stable water inflow at the moment, so that vortex caused by air flow impact can be effectively reduced and water distribution head loss can be reduced through equidistant perforation on the main pipe.
As shown in FIG. 4, when the water inflow is set to a predetermined value, for example, 40m 3 And/h, testing the water head loss of the water distribution of the two water distribution main pipes 2 under different fan frequencies, and finding that the water head loss of the water distribution main pipe 2 with the water outlet 7 and the water outlet 7 not have larger phase difference, wherein the overall water head loss of the water distribution main pipe 2 without punching is more than 400mm, and the overall water head loss of the water distribution main pipe 2 after punching is about 300 mm.
As shown in FIG. 5, when the water inflow is set to a predetermined value, for example, 40m 3 And (h) testing whether the water distribution holes are aligned or not, and if so, the water distribution head loss of the water distribution main pipe 2 is larger, and the water distribution head loss of the water distribution main pipe 2 with the aligned water distribution holes and the water distribution head loss of the water distribution main pipe 2 with the misaligned water distribution holes are larger, wherein the overall water distribution head loss of the aligned water distribution holes is larger than the water distribution head loss with the misaligned water distribution holes, and the water distribution head loss 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 the equipment on the basis of ensuring uniform water distribution.
In addition, in the present embodiment, an aeration device for uniformly discharging the gas passing through the gas distribution branch pipe 6 into the water body is fixedly installed outside the gas distribution hole 5. Wherein the arrangement density of the aeration devices is 25-75 per square meter.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, 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 present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 has shown and described the basic principles, principal features and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made without departing from the spirit and scope of the application, which is defined in the appended claims.
Claims (4)
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 paved 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 to two sides to form a plurality of water distribution branch pipes, and a plurality of water distribution holes penetrating up and down are formed in the water distribution branch pipes;
the gas distribution main pipe extends to 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;
one air distribution hole is arranged right below each water distribution hole and corresponds to the air distribution hole;
equidistant water outlet holes are formed in the water distribution main pipe, 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 upwards;
the distance between the adjacent water outlet holes is 20-50 cm.
2. The structure of claim 1, wherein an aeration device is fixedly installed outside the air distribution holes.
3. The biofilter water and gas distribution structure according to claim 2, wherein the distribution density of the aeration device is 25-75 per square meter.
4. The biofilter water and air distribution structure of claim 1, wherein the aperture of the water outlet hole is 8-12 mm.
Priority Applications (1)
| 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 |
|---|---|---|---|
| CN202011043229.5A CN112358031B (en) | 2020-09-28 | 2020-09-28 | Water and gas distribution structure of biological filter |
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| CN112358031A CN112358031A (en) | 2021-02-12 |
| CN112358031B true 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 |
| 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 |
| 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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