CN217556018U - Integrated equipment for domestic sewage treatment - Google Patents
Integrated equipment for domestic sewage treatment Download PDFInfo
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- CN217556018U CN217556018U CN202221737742.9U CN202221737742U CN217556018U CN 217556018 U CN217556018 U CN 217556018U CN 202221737742 U CN202221737742 U CN 202221737742U CN 217556018 U CN217556018 U CN 217556018U
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- 239000010865 sewage Substances 0.000 title claims abstract description 42
- 239000010802 sludge Substances 0.000 claims abstract description 61
- 238000006243 chemical reaction Methods 0.000 claims abstract description 45
- 238000004062 sedimentation Methods 0.000 claims abstract description 40
- 230000003068 static effect Effects 0.000 claims abstract description 36
- 239000000126 substance Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 59
- 230000015271 coagulation Effects 0.000 claims description 18
- 238000005345 coagulation Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 13
- 239000013043 chemical agent Substances 0.000 claims description 12
- 230000001546 nitrifying effect Effects 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 10
- 238000010992 reflux Methods 0.000 abstract description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 19
- 229910052698 phosphorus Inorganic materials 0.000 description 19
- 239000011574 phosphorus Substances 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000005273 aeration Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical group BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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Classifications
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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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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The application relates to integrated equipment for domestic sewage treatment, which relates to the technical field of sewage treatment and comprises an integrated biological reaction tank and a secondary sedimentation tank, wherein the integrated biological reaction tank comprises an anoxic zone, an anaerobic zone and an aerobic zone which are sequentially arranged; the integrated equipment also comprises a static sedimentation area arranged at the rear end of the aerobic area, the bottom of the static sedimentation area is provided with a sludge return pipe, and the sludge return pipe is connected with at least one of the anoxic area, the anaerobic area and the aerobic area. This application has the effect of avoiding chemical sludge reflux in traditional handicraft.
Description
Technical Field
The application relates to the technical field of sewage treatment, in particular to integrated equipment for domestic sewage treatment.
Background
Along with the development of society, people pay more and more attention to environmental protection. Particularly in the aspect of water environment, the water pollution and the water eutrophication have adverse effects on the environment, the water environment protection is greatly concerned by governments and society, the sewage treatment industry is rapidly developed, and the requirement on the nitrogen and phosphorus content of the effluent is more strict. At present, domestic sewage is treated by corresponding nitrogen and phosphorus removal equipment, and the water quality reaches relevant standards and is discharged.
The related technology is shown in Chinese patent application with the application number of 201610037950.0, which discloses a sludge reduction and nitrogen and phosphorus removal coupling treatment device and a method, the device comprises an integrated biological reaction tank and a secondary sedimentation tank connected with the rear end of the integrated biological reaction tank, and the front end of the integrated biological reaction tank is provided with a water inlet distribution pipe; a water outlet pipe is arranged at the rear end of the secondary sedimentation tank, and a residual sludge discharge pipe and a sludge return pipe are arranged at the bottom of the secondary sedimentation tank; the integrated biological reaction tank comprises a biological flocculation tank, a preliminary sedimentation tank, an anaerobic tank, an anoxic tank and an aerobic tank which are sequentially connected along the water inlet direction; the bottom of the pre-settling tank is provided with a sludge discharge pipe, the water inlet distribution pipe is connected with the biological flocculation tank, the anoxic tank I and the anoxic tank II, and the sludge return pipe is connected with the biological flocculation tank and the anaerobic tank.
In view of the above-mentioned related technologies, the water flowing out of the aerobic tank enters the secondary sedimentation tank after being dosed by the auxiliary chemical phosphorus removal dosing system, and the sludge with the chemical phosphorus removal agent may flow back to the integrated biological reaction tank along with the sludge return pipe, which affects the sewage treatment effect.
SUMMERY OF THE UTILITY MODEL
In order to improve the problem of the backflow of the sludge with chemical agents in the traditional process, the application provides an integrated device for domestic sewage treatment.
The application provides a pair of integrated equipment for domestic sewage treatment adopts following technical scheme:
an integrated device for domestic sewage treatment comprises an integrated biological reaction tank and a secondary sedimentation tank, wherein the integrated biological reaction tank comprises an anoxic zone, an anaerobic zone and an aerobic zone which are sequentially arranged, and a water inlet pipe is arranged at the front end of the integrated biological reaction tank; the integrated equipment also comprises a static settling zone arranged at the rear end of the aerobic zone, and a sludge return pipe is arranged at the bottom of the static settling zone and connected with at least one of the anoxic zone, the anaerobic zone and the aerobic zone.
Through adopting above-mentioned technical scheme, domestic sewage enters into integration biological reaction pond from the inlet tube that the front end intercommunication was intake, and the domestic sewage that here gets into can be the domestic sewage who contains large granule organic matter, also can be the domestic sewage through prefiltration. Domestic sewage passes through the anoxic zone, the anaerobic zone and the aerobic zone, and is subjected to nitrification and denitrification reactions under the action of microorganisms to decompose organic matters, so that the nitrogen content in water is greatly reduced.
The denitrified water enters the static settling area, and the activated sludge and the deflocculated sludge can be better separated because the activated sludge has better settling effect than the deflocculated sludge. The activated sludge flows back through the sludge return pipe, and the return quality of the sludge is improved. At the moment, the returned sludge does not contain chemical agents, so that the influence on the whole sewage treatment system is reduced.
According to the requirement, chemical agents can be added to remove phosphorus after the static settling zone and before the static settling zone enters a secondary settling tank. As the SS (suspended solid) concentration content of the effluent of the static settling zone is low, the dosage of the phosphorus removing agent of the back-end chemical phosphorus removal process unit is greatly reduced, and meanwhile, the SS of the effluent of the static settling zone can be used as a condensation nucleus for chemical phosphorus removal, thereby improving the precipitation effect of the chemical phosphorus removal.
And (3) the water with the chemical agent enters a secondary sedimentation tank for sedimentation, and the sludge containing the chemical agent is discharged from a residual sludge discharge pipe at the bottom of the secondary sedimentation tank.
Optionally, the bottom of the static settling zone is communicated with the aerobic zone, and the bottom wall of the static settling zone is gradually raised and obliquely arranged from one side of the aerobic zone to one side far away from the aerobic zone.
Optionally, the static settling zone is provided with a nitrifying liquid return pipe connected with the anoxic zone and/or the anaerobic zone.
Optionally, the integrated equipment further comprises a coagulation reaction zone arranged at the rear end of the static settling zone, and the secondary settling tank is connected to the coagulation reaction zone.
Optionally, the coagulation reaction zone is connected with a dosing device for adding chemical agents.
Optionally, a water collecting tank communicated with the water outlet pipe is arranged on the upper part of the secondary sedimentation tank along the circumferential side wall.
Optionally, the secondary sedimentation tank is provided with a central cylinder, and the water outlet end of the integrated biological reaction tank is connected with the central cylinder.
Optionally, one side of the water collecting tank close to the central cylinder is connected with a cofferdam, and the top end of the cofferdam is provided with at least one groove.
Optionally, the bottom of the secondary sedimentation tank is further provided with a spare sludge return pipe connected to the anoxic zone and/or the anaerobic zone.
Optionally, the anaerobic zone and/or the aerobic zone is filled with a biological carrier filler.
In summary, the present application includes at least one of the following advantageous technical effects:
1. a static settling zone is additionally arranged, so that the backflow of chemical sludge in the traditional process is effectively avoided, and the use amount of chemical phosphorus removal agents is reduced;
2. the concentration content of SS (suspended solid) in the effluent of the static settling zone is low, the dosage of the phosphorus removing agent of the back-end chemical phosphorus removal process unit is greatly reduced, and meanwhile, the SS in the effluent of the static settling zone can be used as a condensation nucleus for chemical phosphorus removal, so that the precipitation effect of the chemical phosphorus removal is improved.
Drawings
FIG. 1 is a schematic structural diagram of an integrated domestic sewage treatment apparatus according to an embodiment of the present disclosure;
FIG. 2 is a longitudinal section of FIG. 1;
fig. 3 is an enlarged view of a portion a in fig. 2.
Description of reference numerals:
1. an anoxic zone; 2. an anaerobic zone; 3. a primary aerobic zone; 4. a secondary aerobic zone; 5. a static settling zone; 6. a coagulation reaction zone; 7. a device room; 8. a fan; 9. an electric cabinet; 10. a sludge reflux pump; 11. a nitrifying liquid reflux pump; 12. dosing equipment; 13. a bio-carrier mechanism; 14. a water inlet pipe; 15. a medicine feeding pipe; 16. a nitrifying liquid return pipe; 17. a sludge return pipe; 18. a standby sludge return pipe; 19. a secondary sedimentation tank; 20. a central barrel; 21. a residual sludge pump; 22. a water outlet pipe; 23. a connecting plate; 24. cofferdam; 241. a groove; 25. a water collection tank.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The application discloses an integrated equipment for domestic sewage treatment.
Referring to fig. 1 and 2, the integrated apparatus for domestic sewage treatment comprises an integrated biological reaction tank and a secondary sedimentation tank 19, the integrated biological reaction tank comprises an anoxic zone 1, an anaerobic zone 2 and an aerobic zone which are sequentially arranged, and a water inlet pipe 14 is arranged at the front end of the integrated biological reaction tank; the rear end of the secondary sedimentation tank 19 is provided with a water outlet pipe 22, the bottom of the secondary sedimentation tank 19 is provided with a residual sludge discharge pipe, the integrated equipment further comprises a static sedimentation zone 5 arranged at the rear end of the aerobic zone, the bottom of the static sedimentation zone 5 is provided with a sludge return pipe 17, and the sludge return pipe 17 is connected with at least one of the anoxic zone 1, the anaerobic zone 2 and the aerobic zone.
The domestic sewage enters the integrated biological reaction tank from a water inlet pipe 14 with the front end communicated with water inlet, wherein the domestic sewage entering the integrated biological reaction tank can be the domestic sewage containing large-particle organic matters or the domestic sewage which is pre-filtered. Domestic sewage passes through the anoxic zone 1, the anaerobic zone 2 and the aerobic zone, and is subjected to nitrification and denitrification reactions under the action of microorganisms to decompose organic matters, so that the nitrogen content in the water is greatly reduced.
The denitrified water enters the static settling area 5, and the activated sludge and the deflocculated sludge can be better separated because the activated sludge has better settling effect than the deflocculated sludge. The activated sludge flows back through the sludge return pipe 17, and the return quality of the sludge is improved. At the moment, the returned sludge does not contain chemical agents, so that the influence on the whole sewage treatment system is reduced.
According to the requirement, chemical agents can be added after the static settling zone 5 and before the static settling zone enters the secondary settling tank 19 for dephosphorization. As the SS (suspended solid) concentration content of the effluent of the static settling zone 5 is low, the dosage of the phosphorus removing agent of the back-end chemical phosphorus removal process unit is greatly reduced, and meanwhile, the SS of the effluent of the static settling zone 5 can be used as a condensation nucleus for chemical phosphorus removal, thereby improving the precipitation effect of the chemical phosphorus removal.
The water with the chemical agent enters the secondary sedimentation tank 19 for sedimentation, and the sludge containing the chemical agent is discharged from the residual sludge discharge pipe at the bottom of the secondary sedimentation tank 19.
The aerobic zone comprises a primary aerobic zone 3 and a secondary aerobic zone 4, and the bottoms of the primary aerobic zone 3 and the secondary aerobic zone 4 are communicated. The anoxic zone 1 is communicated with the anaerobic zone 2 through a bottom communicating hole, the top of the primary aerobic zone 3 is communicated with the anaerobic zone 2, and the bottom of the secondary aerobic zone 4 is communicated with the static settling zone 5. The sludge return pipe 17 is connected with a sludge return pump 10, the sludge return pipe 17 can be respectively provided with branch pipes connected with the anoxic zone 1, the anaerobic zone 2 and the first-stage aerobic zone 3, and the branch pipes are respectively provided with valves so as to control the position of sludge return. The sludge reflux pump 10 may be a sludge pump.
According to the requirement, the anoxic zone 1 can be in two stages or more, the anaerobic zone 2 can be in two stages or more, and the aerobic zone can be in one stage or three stages or more.
The water inlet pipe 14 is provided with a branch pipe extending into the anoxic zone 1 and the anaerobic zone 2, and the branch pipe is provided with a valve so as to control the water inlet position and multi-point water inlet. When the C/N ratio of the inlet water quality is less than 3, the valves on the branch pipes are opened to supply water at the same time. The proportion distribution of intaking can be according to C/N than the adjustment, for example when the quality of water of intaking is better, can only open the valve in 2 positions in anaerobic zone, and sewage directly gets into anaerobic zone 2, skips anoxic zone 1.
The diapire of quiet heavy district 5 risees the slope setting gradually to keeping away from 4 one side in second grade aerobic zone 4 from 4 one sides in second grade aerobic zone, and like this a part mud passes through the front end of sludge reflux pump 10 pressurization suction to anoxic zone, anaerobic zone, and a part mud can fall to second grade aerobic zone through the slope diapire after subsiding through gravity, helps keeping system sludge concentration.
Referring to fig. 1 and 2, the static settling zone 5 is provided with a nitrified liquid return pipe 16 connected to the anoxic and/or anaerobic zone. The nitrifying liquid return pipe 16 is connected with a nitrifying liquid return pump 11, and the nitrifying liquid return pump 11 can be a sewage pump. The inlet end of the nitrifying liquid return pipe 16 may extend into the upper part of the static settling zone 5 to reduce the possibility of pumping to the lower layer of sludge.
The nitrifying liquid return pipe 16 may be further connected with a branch pipe extending to the anoxic zone 1 and the anaerobic zone 2, and the branch pipe is provided with a valve so that the position of nitrifying liquid return can be controlled.
Referring to fig. 1 and 2, the integrated equipment further includes a coagulation reaction zone 6 disposed at the rear end of the static settling zone 5, and a secondary settling tank 19 is connected to the coagulation reaction zone 6. The top end of the static settling zone 5 is close to the upper part of one side of the coagulation reaction zone 6, and is fixedly connected with a weir groove, the effluent of the static settling zone 5 is collected by the weir groove and then enters the coagulation reaction zone 6, and the coagulation reaction zone 6 is reacted by adding a coagulant, and then the sewage enters a secondary settling tank 19.
In order to facilitate the administration of the medicament, the coagulation reaction zone 6 is connected with a dosing device 12 for adding a chemical medicament. The dosing equipment 12 is connected with a dosing pipe 15 extending into the coagulation reaction zone 6, and the dosing equipment 12 can be a funnel, a dosing pump, additive adding equipment or additive compounding equipment.
Referring to fig. 2 and 3, the upper part of the secondary sedimentation tank 19 is provided with a water collecting tank 25 communicated with the water outlet pipe 22 along the circumferential side wall. The water in the secondary sedimentation tank 19 overflows into the water collecting tank 25 and then flows out through the water outlet pipe 22, so that the water quality of the water flowing out of the water outlet pipe 22 is improved.
In order to further reduce the particle impurities such as mud content of the effluent, the secondary sedimentation tank 19 is provided with a central cylinder 20, and the water outlet end of the integrated biological reaction tank is connected with the central cylinder 20. The coagulation reaction zone 6 can be connected to the interior of the central cylinder 20 by connecting pipes which extend through the side walls of the secondary sedimentation tank 19. The central cylinder 20 may be fixed to the side wall of the secondary sedimentation tank 19 by a connection plate 23, and the central cylinder 20 may be located at the center of the secondary sedimentation tank 19. The water entering from the coagulation reaction zone 6 firstly enters the central cylinder 20, so that the possibility of disturbance of the water flow to the original still water in the secondary sedimentation tank 19 is reduced, and the sedimentation effect of the secondary sedimentation tank 19 is improved. The end of the connection plate 23 remote from the central cartridge 20 may also be secured to the water collection sump 25, as desired.
In order to further improve the quality of the effluent water, a cofferdam 24 is connected to one side of the water collecting tank 25 close to the central cylinder 20, and at least one groove 241 is arranged at the top end of the cofferdam 24. During the process of slowly raising the water in the secondary sedimentation tank 19, cleaner water on the water surface overflows into the water collection tank 25 along the grooves 241. In order to slow down the water overflowing speed, the grooves 241 may be provided in plural and along the circumference of the cofferdam 24, which also increases the overflowing amount of water per unit time.
Referring to fig. 1 and 2, the bottom of the secondary sedimentation tank 19 is also provided with a spare sludge return pipe 18 connected to the anoxic zone 1 and/or the anaerobic zone 2. The spare sludge return pipe 18 is connected with a residual sludge pump 21. According to the requirement, the spare sludge return pipe 18 can be provided with a branch pipe extending into the anoxic zone 1 and the anaerobic zone 2, and the branch pipe is provided with a valve so as to control the position of sludge return. When the quality of the sewage entering from the water inlet pipe 14 is relatively high and chemical agents do not need to be put into the coagulation reaction zone 6, the sludge in the secondary sedimentation tank 19 can also be selectively refluxed.
Referring to fig. 2, in order to compensate for the low aeration and oxygenation efficiency of the conventional sewage treatment apparatus due to the height limitation, the anaerobic zone 2 and/or the aerobic zone is/are filled with bio-carrier packing. The bio-carrier filler can be MBBR filler, and can provide an attachment carrier for active microorganisms. The bio-carrier packing can here also be replaced by bio-carrier means 13 arranged below the liquid level in the primary 3 and secondary 4 aerobic zones. The bio-carrier mechanism 13 may specifically be: an upper layer of stainless steel mesh and a lower layer of stainless steel mesh are arranged in the aerobic zone, MBBR filler is fixed between the two layers of meshes, and the stainless steel meshes are fixed on the wall of the integrated biological reaction tank through bolts, so that the aerobic biological reaction tank is convenient to disassemble.
Referring to fig. 2, in order to fully utilize the space, the integrated biological reaction tank further includes an equipment room 7, and a sludge reflux pump 10 and a nitrifying liquid reflux pump 11 are installed in the equipment room 7. The equipment room 7 may be located below the coagulation reaction zone 6. The equipment room 7 is also provided with an electric cabinet 9 for supplying power to the electric equipment.
A fan 8 can be arranged in the equipment room 7, an aeration pipe is arranged at the bottom of the aerobic zone, and the fan 8 is connected with the aeration pipe so as to aerate the aerobic zone.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An integrated device for domestic sewage treatment comprises an integrated biological reaction tank and a secondary sedimentation tank (19), wherein the integrated biological reaction tank comprises an anoxic zone (1), an anaerobic zone (2) and an aerobic zone which are sequentially arranged, and the front end of the integrated biological reaction tank is provided with a water inlet pipe (14); the rear end in two heavy ponds (19) is equipped with outlet pipe (22), and the bottom in two heavy ponds (19) is equipped with surplus sludge discharge pipe, its characterized in that: the integrated equipment further comprises a static settling zone (5) arranged at the rear end of the aerobic zone, a sludge return pipe (17) is arranged at the bottom of the static settling zone (5), and the sludge return pipe (17) is connected to at least one of the anoxic zone (1), the anaerobic zone (2) and the aerobic zone.
2. The integrated apparatus for domestic sewage treatment according to claim 1, wherein: the bottom of the static settling zone (5) is communicated with the aerobic zone, and the bottom wall of the static settling zone (5) is gradually raised and inclined from one side of the aerobic zone to one side far away from the aerobic zone.
3. The integrated apparatus for domestic sewage treatment according to claim 1, wherein: the static settling zone (5) is provided with a nitrifying liquid return pipe (16) connected with the anoxic zone (1) and/or the anaerobic zone (2).
4. The integrated apparatus for domestic sewage treatment according to any one of claims 1 to 3, wherein: the integrated equipment also comprises a coagulation reaction zone (6) arranged at the rear end of the static settling zone (5), and the secondary settling tank (19) is connected to the coagulation reaction zone (6).
5. The integrated apparatus for domestic sewage treatment according to claim 4, wherein: the coagulation reaction zone (6) is connected with a chemical adding device (12) for adding chemical agents.
6. The integrated apparatus for domestic sewage treatment according to claim 1, 2, 3 or 5, wherein: the upper part of the secondary sedimentation tank (19) is provided with a water collecting tank (25) communicated with the water outlet pipe (22) along the circumferential side wall.
7. The integrated apparatus for domestic sewage treatment according to claim 6, wherein: the secondary sedimentation tank (19) is provided with a central cylinder (20), and the water outlet end of the integrated biological reaction tank is connected with the central cylinder (20).
8. The integrated apparatus for domestic sewage treatment according to claim 7, wherein: one side of the water collecting tank (25) close to the central cylinder (20) is connected with a cofferdam (24), and the top end of the cofferdam (24) is provided with at least one groove (241).
9. The integrated apparatus for domestic sewage treatment according to claim 1, 2, 3, 5, 7 or 8, wherein: the bottom of the secondary sedimentation tank (19) is also provided with a spare sludge return pipe (18) connected with the anoxic zone (1) and/or the anaerobic zone (2).
10. The integrated apparatus for domestic sewage treatment according to claim 1, 2, 3, 5, 7 or 8, wherein: the anaerobic zone (2) and/or the aerobic zone are/is filled with biological carrier filler.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221737742.9U CN217556018U (en) | 2022-07-07 | 2022-07-07 | Integrated equipment for domestic sewage treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221737742.9U CN217556018U (en) | 2022-07-07 | 2022-07-07 | Integrated equipment for domestic sewage treatment |
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| CN217556018U true CN217556018U (en) | 2022-10-11 |
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| CN202221737742.9U Active CN217556018U (en) | 2022-07-07 | 2022-07-07 | Integrated equipment for domestic sewage treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117645386A (en) * | 2023-12-21 | 2024-03-05 | 北京首都国际机场股份有限公司 | Sewage treatment system of small-capacity garbage station |
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2022
- 2022-07-07 CN CN202221737742.9U patent/CN217556018U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117645386A (en) * | 2023-12-21 | 2024-03-05 | 北京首都国际机场股份有限公司 | Sewage treatment system of small-capacity garbage station |
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