CN217578621U - Bury formula facultative biomembrane sewage treatment plant entirely - Google Patents
Bury formula facultative biomembrane sewage treatment plant entirely Download PDFInfo
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- CN217578621U CN217578621U CN202221477382.3U CN202221477382U CN217578621U CN 217578621 U CN217578621 U CN 217578621U CN 202221477382 U CN202221477382 U CN 202221477382U CN 217578621 U CN217578621 U CN 217578621U
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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 utility model provides a fully buried facultative biomembrane sewage treatment device, which comprises an adjusting tank, an anoxic tank, an MBR tank, an equipment room, a channel and a sludge tank which are connected transversely in sequence; the adjusting tank is longitudinally connected with an anaerobic tank; polyurethane biological fillers are arranged in the anoxic tank and the MBR tank; a suction pump, a dosing tank and a bus control instrument are arranged in the equipment room; the sludge tank is longitudinally connected with a clean water tank, and the clean water tank is provided with a water outlet. The utility model discloses a device area is little, saves the independent design of good foster district and anaerobic zone among the traditional biomembrane sewage treatment process, and it is stable to go out the water, and the treatment effect is good, utilizes the high concentration microorganism of the polyurethane biofilm carrier enrichment in oxygen deficiency pond and the MBR pond to replace activated sludge, compares in traditional biomembrane process, can reduce sludge concentration to 4000 ~ 5000mg/L between, reduces 40% ~ 60%, effectively reduces the mud discharge capacity.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, in particular to bury formula facultative biomembrane sewage treatment plant entirely.
Background
With the development of modern industry and city construction, the problem of environmental pollution, especially water pollution, in cities in China is increasingly boring, and the problem of water resources is also increasingly tense. With more and more sewage treatment facilities put into operation, biological treatment technology has become the main method for treating municipal sewage and organic industrial wastewater, and the main devices are biological aerated filter (fixed bed) and MBR (biofilm reactor). The 21 st century is the era of membrane science and technology. At present, in the field of sewage treatment, membrane technology, particularly membrane bioreactor technology, is generally regarded as important. The membrane can efficiently intercept biomass in the reactor and replace a secondary sedimentation tank of a sewage plant, so that the floor area is reduced; the separation of the hydraulic retention time and the sludge retention time in the biochemical reactor improves the biochemical efficiency of the sewage, reduces the effluent turbidity and the coliform group number, and improves the effluent quality; the system can realize full-process automatic control and is convenient to operate and manage.
However, in an actual sewage treatment process, the existing biological aerated filter and MBR are prone to the following problems: 1. the existing aeration biological filter tank sewage treatment has incomplete backwashing, easy blockage caused by filling, and poor deep filtration treatment of low pollutant concentration because the sewage treatment is stopped on the surface layer; 2. the MBR biofilm reactor has complicated process flow, excessive membrane component consumption and great operation and maintenance difficulty; the membrane tank aeration energy consumption is too high, and the operating cost is too high; the ton water investment of the flat ceramic membrane is too high, and the service life is not in direct proportion to the return on investment; the backwashing frequency needs to be kept, and the energy consumption of equipment is increased.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem that current biofilm reactor exists in sewage treatment, the utility model provides a bury formula facultative biomembrane entirely, effectual reduction biomembrane backwash, change number of times, extension membrane life reduces the working costs.
The utility model discloses a realize through following technical scheme:
a fully buried facultative biomembrane sewage treatment device comprises an adjusting tank, an anoxic tank, an MBR tank, an equipment room, a channel and a sludge tank which are connected transversely in sequence;
the adjusting tank is longitudinally connected with an anaerobic tank; the front end of the anaerobic tank is provided with a water inlet and a fine grid, and the side wall of the anaerobic tank is provided with a nitrifying liquid return port;
the anoxic pond is internally provided with a polyurethane biological filler;
the front end of the MBR tank is provided with a sludge return port; polyurethane biological filler is put into the MBR tank, an aeration pipeline is arranged at the front end of the tank, and a biological membrane component is arranged at the rear end of the tank;
a suction pump (11), a medicine adding tank (12) and a bus control instrument (13) are arranged in the equipment room;
the sludge tank is longitudinally connected with a clean water tank, and the clean water tank is provided with a water outlet.
The utility model discloses a device sets up based on "AAO + MBBR" technology, breaks through the form that traditional sewage treatment plant adopted the box to set up, and the split of monomer equalizing basin is "equalizing basin + anaerobic zone", reduces the redundant volume of anaerobism and oxygen deficiency processing section to do not set up good oxygen pond alone, carry out good oxygen processing through membrane reaction district aeration control, reduced the backwash number of times of mud content in order to reduce the biomembrane, improve biomembrane reactor's life. The control of each device is carried out on a bus control instrument in the device room, so that the operation safety is ensured.
The utility model discloses the theory of operation of device as follows:
before using, will the utility model discloses a device buries in the underground, reduces the occupation of soil to the polyurethane biofilm carrier who sets up in oxygen deficiency pond and MBR pond can adhere to anaerobism microorganism (denitrifying bacteria) and aerobe (nitrobacteria) simultaneously, realizes nitrifying, denitrifying reaction sewage.
After sewage collected this sewage treatment plant through sewage conduit, the manual start and stop valve, sewage were held back by thin grid from the water inlet of equalizing basin, thick floater in the sewage by thin grid, and then gravity flows in the equalizing basin. The sewage is subjected to water quality and water quantity regulation in the regulating tank through a preset aeration system, and the water body is fully stirred. The regulated water body is pumped to an anoxic tank, denitrification reaction is carried out by denitrifying bacteria and using readily degradable BOD in the water body as a carbon source, the concentration of organic matters in the sewage is reduced, and nitrogen substances in the reflux mixed liquid are reduced.
The sewage treated by the anaerobic tank enters an anoxic tank, and the nitrogen content in the sewage is degraded through denitrification reaction of denitrifying bacteria in the anoxic tank.
Sewage after the denitrogenation is sent to the MBR pond and is carried out mud-water separation, and sludge sedimentation is to the bottom of the pool, and the water of separation flows through the biofilm reactor of MBR pond rear end and handles, through membrane treatment and nitrobacteria cooperative processing, degrades the phosphorus content in the aquatic, and sewage after the processing gets into the clean water basin after pipeline ultraviolet disinfection, flows to the outside automatically and discharges. And (3) conveying the sludge precipitated at the bottom of the tank to the front end of the MBR tank by using a pump for aeration treatment, then conveying the sludge to a sludge tank, and periodically carrying out outward treatment after adding a regulator. When needed, the sludge in the sludge tank can be sent to the MBR tank through the sludge return port to assist the nitration reaction.
And the water body in the clean water tank is also used for backwashing of the MBR tank, when backwashing is carried out, the water outlet of the clean water tank is closed, the suction pump is opened to pump the clean water in the clean water tank to the MBR tank, the MBR tank is washed by combining with the air blower, and meanwhile, the medicine adding tank is opened and is sprayed with acid and alkali liquor to disinfect the tank body.
The high-concentration microorganisms enriched by the polyurethane biological fillers in the anoxic tank and the MBR tank are used for replacing activated sludge, the sludge concentration in the water treatment tank is reduced, the sludge discharge is reduced, and meanwhile, the polyurethane biological fillers carry micro bubbles on the surface in the fluidization process in the tank, so that the membrane of the MBR reactor is scrubbed, the membrane flux is improved, and the membrane backwashing frequency is reduced.
Preferably, the specific surface area of the polyurethane biological filler is more than 2000m 2 /m 3 。
Preferably, the regulating tank is 1-2 groups. The multi-group regulating tank can improve the single water treatment amount, but the volume of the equipment is increased due to excessive arrangement of the tank body, so that 1-2 groups are optimal. When the 2 groups are provided with the adjusting tanks, sewage after denitrification in the anaerobic tank enters the next group of adjusting tanks through the nitrifying liquid return port to continue adjusting and denitrifying reactions.
Preferably, the MBR tank is 1-2 groups; when 2 groups are arranged, the 1 st group of MBR tank is internally provided with the polyurethane combined filler, and the 2 nd group of MBR tank is internally provided with the flexible high-efficiency biological carrier. The flexible high-efficiency biological carrier is an organic biological carrier and is selected from one of PVC, PE, PS, PP, fiber and gelatin.
MBR reaction tank front end increase aeration rate, and biofilm element concentrates to set up in the rear end, and flexible high-efficient biological carrier is thrown in the supplementary throwing of one set of MBR pond among them, with the dull and stereotyped membrane synergism of biology, can further improve the work efficiency of membrane reactor, nevertheless because of the whole space of equipment occupies the consideration, MBR pond is respectively also should not set up too much.
Preferably, the aperture of the biological membrane in the MBR tank is larger than 0.1 μm, and the effective membrane area of a single set of membrane module is 160m 2 。
Preferably, the medicine adding tank is a citric acid medicine adding tank and a sodium hypochlorite medicine adding tank.
The utility model has the advantages as follows:
1. the device of the utility model occupies small area, and the independent design of a aerobic area and an anaerobic area in the traditional biomembrane sewage treatment process is omitted; the equipment room can be completely buried, and land occupation is further reduced.
2. The utility model discloses a device goes out water stably, and the treatment effect is good, utilizes the high concentration microorganism of the enrichment of polyurethane biofilm carrier in oxygen deficiency pond and the MBR pond to replace activated sludge, compares in traditional biomembrane technology, the utility model discloses can reduce sludge concentration to 4000 ~ 5000mg/L between, reduce 40% ~ 60%, effectively reduce the mud discharge capacity.
3. The utility model discloses a polyurethane biofilm carrier that the device set up fluidizes the in-process in the pond, and the surface carries small bubble, can clean the diaphragm of MBR reactor, improves membrane flux, reduces the diaphragm backwash, and the backwash number of times is conservative to be calculated and to be reduced 30% ~ 50%, and life can prolong 1/3 ~ 1/2.
Drawings
Fig. 1 is a schematic view of the top view structure of the device of the present invention.
Fig. 2 is a schematic top view of an embodiment of the present invention.
Reference numerals: 1-regulating tank, 2-anoxic tank, 3-MBR tank, 4-equipment room, 5-channel, 6-sludge tank, 7-anaerobic tank, 8-clear water tank, 9-nitrifying liquid reflux port, 10-sludge reflux port, 11-suction pump, 12-dosing tank and 13-bus control instrument.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1
As shown in figure 1, the fully buried facultative biomembrane sewage treatment device comprises an adjusting tank 1, an anoxic tank 2, an MBR tank 3, an equipment room 4, a channel 5 and a sludge tank 6 which are connected transversely in sequence.
The adjusting tank 1 is longitudinally connected with an anaerobic tank 7; the front end of the anaerobic tank 7 is provided with a water inlet and a fine grid, and the side wall is provided with a nitrifying liquid return opening 9.
The anoxic pond 2 is internally provided with polyurethane biological filler.
The front end of the MBR tank 3 is provided with a sludge return port 10; polyurethane biological filler is put in the MBR tank 3, an aeration pipeline is arranged at the front end of the tank, and a biological membrane component is arranged at the rear end of the tank. The aperture of the biological membrane is larger than 0.1 μm, and the effective membrane area of the single set of membrane module is 160m 2 。
The specific surface area of the polyurethane biological filler is more than 2000m 2 /m 3 。
A suction pump 11, a dosing tank 12 and a bus control instrument 13 are arranged in the equipment room 4; the medicine adding tank 12 is a citric acid medicine adding tank and a sodium hypochlorite medicine adding tank.
The sludge tank 6 is longitudinally connected with a clean water tank 8, and the clean water tank 8 is provided with a water outlet.
The working principle of the embodiment is as follows:
before using, bury the device in the underground, reduce the occupation of soil to the polyurethane biofilm carrier who sets up in oxygen deficiency pond 2 and MBR pond 3 can adhere to anaerobism microorganism (denitrifying bacteria) and aerobe (nitrifying bacteria) simultaneously, realizes nitrifying, denitrifying reaction to sewage.
After sewage is collected to this sewage treatment plant through sewage conduit, the manual start and stop valve, sewage are followed the water inlet of equalizing basin 1 and are crossed the thin grid, and thick floater in the sewage is held back by the thin grid, and then gravity flows into equalizing basin 1. The sewage is subjected to water quality and water quantity regulation in the regulating tank 1 through a preset aeration system, and the water body is fully stirred. The adjusted water body is pumped to the anoxic tank 7, and denitrification reaction is carried out by denitrifying bacteria and using BOD (biochemical oxygen demand) which is easy to degrade in the water body as a carbon source, so that the concentration of organic matters in sewage is reduced, and nitrogen substances in the reflux mixed liquid are reduced.
The sewage treated by the anaerobic tank 7 enters the anoxic tank 2, and is subjected to denitrification reaction of denitrifying bacteria in the anoxic tank 2 to degrade the nitrogen content in the sewage.
Sewage after denitrogenation is sent to MBR pond 3 and is carried out mud-water separation, and mud deposits to the bottom of the pool, and the water of separation flows through the biofilm reactor of 3 rear ends in MBR pond and handles, through membrane treatment and nitrobacteria cooperative processing, degrades the phosphorus content in the aquatic, and sewage after the processing gets into clean water basin 8 after pipeline ultraviolet disinfection, flows to the outside certainly and discharges. And (3) pumping the sludge precipitated at the bottom of the tank to the front end of the MBR tank 3 for aeration treatment, then conveying the sludge to a sludge tank 6, and periodically carrying out outward treatment after adding a regulating agent. When needed, the sludge in the sludge tank 6 can be sent to the MBR tank 3 through the sludge return port 10 to assist the nitration reaction.
And the water body in the clean water tank 8 is also used for backwashing the MBR tank 3, when backwashing is carried out, the water outlet of the clean water tank 8 is closed, the suction pump is opened to pump the clean water in the clean water tank 8 to the MBR tank 3, the MBR tank 3 is washed by combining with the air blower, and meanwhile, the medicine adding tank is opened and acid and alkali liquor is sprayed to disinfect the tank body.
Example 2
As shown in fig. 2, this embodiment is different from embodiment 1 in that:
the regulating reservoir 1 is 2 groups.
The working principle of this embodiment is the same as that of embodiment 1.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention may be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.
Claims (7)
1. The utility model provides a bury formula facultative biomembrane sewage treatment plant entirely which characterized in that: comprises an adjusting tank (1), an anoxic tank (2), an MBR tank (3), an equipment room (4), a channel (5) and a sludge tank (6) which are connected in sequence and transversely;
the adjusting tank (1) is longitudinally connected with an anaerobic tank (7); the front end of the anaerobic tank (7) is provided with a water inlet and a fine grid, and the side wall of the anaerobic tank is provided with a nitrifying liquid return port (9);
the anoxic pond (2) is internally provided with a polyurethane biological filler;
the front end of the MBR tank (3) is provided with a sludge return port (10); polyurethane biological filler is put into the MBR tank (3), an aeration pipeline is arranged at the front end of the tank, and a biological membrane component is arranged at the rear end of the tank;
a suction pump (11), a dosing tank (12) and a bus control instrument (13) are arranged in the equipment room (4);
the sludge tank (6) is longitudinally connected with a clean water tank (8), and the clean water tank (8) is provided with a water outlet.
2. The fully buried facultative biomembrane sewage treatment plant of claim 1, which is characterized in that: the above-mentionedThe specific surface area of the polyurethane biological filler is more than 2000m 2 /m 3 。
3. The fully buried facultative biomembrane sewage treatment plant of claim 1, which is characterized in that: the regulating tank (1) is divided into 1-2 groups.
4. The fully buried facultative biomembrane sewage treatment plant of claim 1, which is characterized in that: the MBR tank (3) is divided into 1-2 groups; when 2 groups are arranged, polyurethane combined filler is put into the 1 st group of MBR tank (3), and flexible high-efficiency biological carriers are put into the 2 nd group of MBR tank (3).
5. The fully buried facultative biofilm sewage treatment plant of claim 4, wherein: the flexible high-efficiency biological carrier is an organic biological carrier and is selected from one of PVC, PE, PS, PP, fiber and gelatin.
6. The fully buried facultative biofilm sewage treatment plant of claim 1, characterized in that: the aperture of the biological membrane in the MBR tank (3) is larger than 0.1 mu m, and the effective membrane area of a single set of membrane module is 160m 2 。
7. The fully buried facultative biofilm sewage treatment plant of claim 1, characterized in that: the medicine adding tank is a citric acid medicine adding tank and a sodium hypochlorite medicine adding tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221477382.3U CN217578621U (en) | 2022-06-14 | 2022-06-14 | Bury formula facultative biomembrane sewage treatment plant entirely |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221477382.3U CN217578621U (en) | 2022-06-14 | 2022-06-14 | Bury formula facultative biomembrane sewage treatment plant entirely |
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| CN217578621U true CN217578621U (en) | 2022-10-14 |
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| CN202221477382.3U Active CN217578621U (en) | 2022-06-14 | 2022-06-14 | Bury formula facultative biomembrane sewage treatment plant entirely |
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