CN116986729A - SBR (sequencing batch reactor) process method and device for rural domestic sewage treatment - Google Patents
SBR (sequencing batch reactor) process method and device for rural domestic sewage treatment Download PDFInfo
- Publication number
- CN116986729A CN116986729A CN202311156151.1A CN202311156151A CN116986729A CN 116986729 A CN116986729 A CN 116986729A CN 202311156151 A CN202311156151 A CN 202311156151A CN 116986729 A CN116986729 A CN 116986729A
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- sbr
- tank
- sewage treatment
- domestic sewage
- rural domestic
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- 238000000034 method Methods 0.000 title claims abstract description 93
- 239000010865 sewage Substances 0.000 title claims abstract description 57
- 238000012163 sequencing technique Methods 0.000 title abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000005273 aeration Methods 0.000 claims abstract description 27
- 238000003756 stirring Methods 0.000 claims abstract description 22
- 238000001556 precipitation Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 239000013049 sediment Substances 0.000 claims abstract description 7
- 239000006228 supernatant Substances 0.000 claims abstract description 7
- 238000004062 sedimentation Methods 0.000 claims description 12
- 238000007667 floating Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 5
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 3
- 238000012279 drainage procedure Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000001546 nitrifying effect Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000010866 blackwater Substances 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010797 grey water Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000271 synthetic detergent Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/002—Grey water, e.g. from clothes washers, showers or dishwashers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
Landscapes
- 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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The application relates to the technical field of sewage treatment, in particular to an SBR (sequencing batch reactor) process method and device for rural domestic sewage treatment, wherein rural domestic sewage sequentially passes through a water inlet grid and an adjusting tank, enters an SBR tank, and is discharged into a water outlet tank after an anoxic and aerobic operation process; the anoxic and aerobic operation process specifically comprises at least one group of stirring anoxic and aeration aerobic processes and a precipitation drainage process; the SBR device also comprises a decanting device which is arranged between the SBR tank and the water outlet tank and is used for discharging sewage sediment supernatant in a siphoning mode; the SBR process method for rural domestic sewage treatment is characterized in that anoxic and aerobic operation procedures are intensively arranged, and an adjusting tank is arranged, so that continuous sewage treatment is facilitated, the occupied area is small, and the method is suitable for rural water quantity instability, small water quantity and the like; the decanting device installed in the process method adopts a siphon mode, reduces an automatic control link, reduces operation energy consumption and reduces rural domestic sewage treatment cost compared with the traditional mode.
Description
Technical Field
The application relates to the technical field of sewage treatment, in particular to an SBR (sequencing batch reactor) process method and device for rural domestic sewage treatment.
Background
The rural domestic sewage mainly comprises black water and gray water, the gray water mainly comprises kitchen sewage, washing sewage and the like, and the black water mainly comprises toilet flushing drainage. The rural sewage has the characteristics of small sewage yield and simple sewage components, mainly contains organic matters such as cellulose, starch, fat, protein and the like, contains inorganic salts such as nitrogen, phosphorus and the like, generally does not contain toxic substances, but has higher BOD/COD value and stronger biodegradability, and synthetic detergents, bacteria, viruses, parasitic ova and the like are also frequently contained in the sewage; rural domestic sewage treatment is not generally applicable to specific process types, and urban sewage treatment processes are mostly adopted or referred to; however, due to the characteristics of obvious fluctuation of rural domestic sewage water quantity, small water quantity and the like, the problems of large occupied area, difficult operation, high automation level and the like of the traditional process occur.
The prior SBR (sequencing batch reactor) process is mostly suitable for the scale of small and medium-sized plants, intermittent reaction is adopted, each working procedure of aeration, aerobiotic and the like is respectively provided with a treatment tank, and the process has the characteristics of large occupied area, large water demand for treatment and the like, and is not suitable for the scene of small-scale rural domestic sewage; meanwhile, the SBR technology is seriously dependent on automation, the automatic control requirement is extremely high, the intermittent drainage time adopted is short, and the sediment sludge layer cannot be stirred during drainage, so that special drainage equipment is generally required, and the operation cost is high.
Aiming at the problems, a low-consumption SBR process type suitable for rural domestic sewage treatment is necessarily designed, the problems of low water quantity and large water quantity fluctuation are considered to be solved, the concentration of organic matters and total nitrogen nutrients in the effluent is reduced, and meanwhile, the degree of dependence of the process on automatic control is considered to be reduced; in view of the above, we propose a process and a device for SBR for rural domestic sewage treatment.
Disclosure of Invention
The application aims to solve the defects in the background art and provides an SBR (sequencing batch reactor) process method and device for rural domestic sewage treatment.
In order to solve the technical problems, the application adopts the following technical scheme:
the SBR process method is characterized in that rural domestic sewage sequentially passes through a water inlet grid and an adjusting tank, enters the SBR tank, passes through a primary and a plurality of secondary anoxic and aerobic operation processes, and is discharged into a water outlet tank;
the anoxic and aerobic operation process specifically comprises at least one group of stirring anoxic and aeration aerobic processes and a precipitation drainage process.
Preferably, the SBR process method specifically comprises the steps of:
step one: the regulating tank discharges suspended sewage into the SBR tank under the stirring condition;
step two: continuously stirring after water inflow of the SBR pool is completed, and performing a pre-anoxic procedure for 0.5-1.0h;
step three: stopping stirring, and performing aeration through an aeration device positioned at the bottom of the SBR tank to perform an aerobic process of degrading organic matters in the sewage by microorganisms to realize ammonia nitrogen nitrification;
step four: stopping aeration, and continuously stirring again to form an anoxic procedure to complete denitrification;
step five: standing to enter a precipitation drainage procedure, pumping the precipitation supernatant in the SBR pool into a water outlet pool in a siphon drainage mode, and draining by a water pump in the water outlet pool.
Preferably, the front end of the water inlet grille is provided with a primary sedimentation process, and the primary sedimentation process comprises setting a sand setting tank and a primary sedimentation tank at the front end of the water inlet grille.
The SBR device for rural domestic sewage treatment is suitable for any one of the SBR process methods, and comprises a stirring device arranged in the SBR tank and used for stirring an anoxic process, an aeration pipe or an aeration disc serving as an aeration device in an aeration aerobic process, and a decanting device arranged between the SBR tank and a water outlet tank and used for discharging sewage sediment supernatant in a siphoning mode.
Preferably, the decanting device comprises an inverted U-shaped pipeline, a pipe body at the highest position of the inverted U-shaped pipeline is submerged below the normal water level of the SBR pool, and pipe orifices at two ends of the inverted U-shaped pipeline are respectively positioned in the SBR pool and the water outlet pool.
Preferably, the water suction port of the inverted U-shaped pipeline is positioned at the position which is not lower than 500mm above the horizontal height of the mud-water interface, and the water outlet of the inverted U-shaped pipeline in the water outlet tank is positioned at the position which is at least 300mm below the horizontal height of the mud-water interface.
Preferably, the electromagnetic valve is arranged on the inverted U-shaped pipeline, and a flow baffle plate is arranged at the water suction port of the inverted U-shaped pipeline in the SBR pool.
Preferably, a lifting pump for discharging clean water is arranged in the water outlet tank, wherein the liquid level height in the water outlet tank is lower than that in the SBR tank.
Preferably, the inverted U-shaped pipeline water suction port is connected with a floating block which changes synchronously with the height of the liquid level through a hose, and the periphery of the floating block is provided with an opening.
Preferably, the floating block adopts a round table structure with gradually enlarged diameter from bottom to top.
Compared with the prior art, the application has the beneficial effects that:
the SBR process method for rural domestic sewage treatment is characterized in that anoxic and aerobic operation procedures are intensively arranged, and an adjusting tank is arranged, so that continuous sewage treatment is facilitated, the occupied area is small, and the method is suitable for rural water quantity instability, small water quantity and the like;
the decanting device installed in the process method adopts a siphon mode, reduces an automatic control link, reduces operation energy consumption and reduces rural domestic sewage treatment cost compared with the traditional mode.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a flow chart of the SBR process of the present application;
FIG. 2 is a flow chart of the anoxic-aerobic operation process of the application;
FIG. 3 is one of the installation schematic diagrams of the decanter assembly of the present application;
FIG. 4 is a second schematic view of the installation of the decanter of the present application.
The meaning of each reference numeral in the figures is:
1. an electromagnetic valve; 2. a floating block (2).
Detailed Description
The technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. Embodiments of the application and features of the embodiments may be combined with each other without conflict. 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.
Referring to fig. 1-4, the present application is described in detail by the following embodiments:
example 1
In the SBR process method for rural domestic sewage treatment, as shown in the process procedure of figure 1, rural domestic sewage is sequentially fed into an SBR tank through a water inlet grid and a regulating tank and then is discharged into a water outlet tank through a primary anoxic-aerobic operation process, and other embodiments can be subjected to a secondary anoxic-aerobic operation process;
the anoxic-aerobic operation process specifically comprises a group of stirring anoxic-aeration-aerobic working procedures and a precipitation drainage working procedure.
It is to be explained that the regulating tank in the process has the characteristics of small water quantity and large water quantity fluctuation variable in rural areas, can play a role in water storage transition, and can provide continuous and uninterrupted sewage to be treated for the rear SBR tank; it is worth noting that in order to be suitable for the characteristics of rural sewage, the SBR tank can realize an anoxic and aerobic operation process, an anoxic environment is provided by adopting a closed structure, an aerobic environment is provided by an aeration device such as an aeration disc, and the occupied area is small and the efficiency is high.
The SBR process method comprises the following specific steps:
step one: the regulating tank discharges suspended sewage into the SBR tank under the stirring condition;
step two: continuously stirring after water inflow of the SBR pool is completed, and performing a pre-anoxic procedure for 1.0h;
step three: stopping stirring, and performing aeration through an aeration disc positioned at the bottom of the SBR tank to perform an aerobic process of degrading organic matters in the sewage by microorganisms to realize ammonia nitrogen nitrification;
step four: stopping aeration, and continuously stirring again to form an anoxic procedure to complete denitrification;
step five: standing, entering a precipitation drainage procedure, pumping the precipitation supernatant in the SBR pool into a water outlet pool in a siphon drainage mode, and draining by a water pump in the water outlet pool.
The primary sedimentation technology is arranged at the front end of the water inlet grille, the sand setting tank and the primary sedimentation tank are arranged at the front end of the water inlet grille, the sand setting tank and the primary sedimentation tank play roles in settling sand and suspended solids and the like, and the primary sedimentation tank and the water decanting device play a role in cooperation and cooperation mainly for avoiding or reducing the thickness of the settled mud in the rear SBR tank, so that the blocking failure rate is reduced.
The SBR device for rural domestic sewage treatment is suitable for the SBR process method, and comprises a stirring device which is arranged in an SBR tank and used for stirring an anoxic process, an aeration pipe or an aeration disc which is used as an aeration device in an aeration aerobic process, and a decanting device which is arranged between the SBR tank and a water outlet tank and used for discharging sewage sediment supernatant in a siphoning mode.
As shown in the structures of fig. 3 and 4, the decanting device comprises an inverted U-shaped pipeline, the highest pipe body of the inverted U-shaped pipeline is immersed below the normal water level of the SBR pool, the pipe orifices at the two ends of the inverted U-shaped pipeline are respectively positioned in the SBR pool and the water outlet pool, and in order to obtain a better siphon effect, the pipe orifices at the two ends of the inverted U-shaped pipeline form gradient heights, so that the problem of reverse siphon is avoided.
It should be noted that in order to avoid the phenomenon of direct siphon drainage of untreated sewage caused by the difference in liquid level height during sewage treatment, the electromagnetic valve 1 is installed on the inverted U-shaped pipeline, and drainage is opened after the treatment time is satisfied.
In the embodiment, because the front-end process is provided with the grit chamber, the primary sedimentation chamber and the water inlet grid which can filter sand and stone precipitation and the like, an inverted U-shaped pipeline with a fixed height structure as shown in the structure shown in fig. 3 is adopted, the water suction port of the inverted U-shaped pipeline is positioned at a position 500mm above the level of the mud-water interface of the sediment, the water outlet of the inverted U-shaped pipeline is positioned in the water outlet chamber and is positioned at a position 300mm below the level of the mud-water interface of the sediment, and a flow baffle plate is arranged at the water suction port, so that the blockage of residual sand and stone is relieved or avoided; the liquid level in the water outlet pool is lower than that in the SBR pool, and a lifting pump for discharging clean water is arranged in the water outlet pool.
Example 2
The difference between the present embodiment and embodiment 1 is that the structure of the decanting apparatus with the structure shown in fig. 4 is used, and the sand settling tank and the primary settling tank are not arranged at the front end, so that the occupied area can be further saved and the pipeline is prevented from being blocked; in this embodiment, the inverted U-shaped pipeline water sucking mouth is connected with the floating block 2 which changes synchronously with the liquid level height through the installed hose, the floating block 2 adopts a round table type structure with the diameter gradually enlarged from bottom to top, and the periphery of the floating block 2 is opened, so that the floating block 2 can change along with the change of the liquid level height, and the water can be continuously discharged to the sedimentation layer based on siphoning to stop.
If directional indications (such as up, down, left, right, front, rear … …) are involved in the embodiments of the present application, the directional indications are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture, and if the particular gesture is changed, the directional indications are changed accordingly.
It will be evident to those skilled in the art that the application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. A process method of SBR for rural domestic sewage treatment is characterized in that: sequentially passing rural domestic sewage through a water inlet grid and an adjusting tank, entering an SBR tank, and discharging the rural domestic sewage into a water outlet tank after a primary and a plurality of secondary anoxic and aerobic operation processes;
the anoxic and aerobic operation process specifically comprises at least one group of stirring anoxic and aeration aerobic processes and a precipitation drainage process.
2. The SBR process for rural domestic sewage treatment according to claim 1, wherein: the SBR process method comprises the following specific steps:
step one: the regulating tank discharges suspended sewage into the SBR tank under the stirring condition;
step two: continuously stirring after water inflow of the SBR pool is completed, and performing a pre-anoxic procedure for 0.5-1.0h;
step three: stopping stirring, and performing aeration through an aeration device positioned at the bottom of the SBR tank to degrade organic matters and realize an aerobic process of nitrifying ammonia nitrogen;
step four: stopping aeration, and continuously stirring again to form an anoxic procedure to finish denitrification;
step five: standing to enter a precipitation drainage procedure, pumping the precipitation supernatant in the SBR pool into a water outlet pool in a siphon drainage mode, and draining by a water pump in the water outlet pool.
3. The SBR process for rural domestic sewage treatment according to claim 1, wherein: the front end of the water inlet grille is provided with a primary sedimentation process, and the primary sedimentation process comprises a sand setting tank and a primary sedimentation tank which are arranged at the front end of the water inlet grille.
4. An SBR apparatus for rural domestic sewage treatment, which is suitable for the SBR process of any of the above claims 1 to 3, comprising a stirring apparatus installed in the SBR tank for stirring the anoxic process, and an aeration pipe or an aeration disc as an aeration apparatus in the aeration aerobic process, characterized in that: the SBR device further comprises a decanting device which is arranged between the SBR tank and the water outlet tank and is used for discharging sewage sediment supernatant in a siphoning mode.
5. The SBR apparatus for rural domestic sewage treatment as set forth in claim 4, wherein: the decanting device comprises an inverted U-shaped pipeline, a pipe body at the highest position of the inverted U-shaped pipeline is immersed below the water level of the SBR pool, and pipe orifices at two ends of the inverted U-shaped pipeline are respectively positioned in the SBR pool and the water outlet pool.
6. The SBR apparatus for rural domestic sewage treatment as claimed in claim 5, wherein: the water sucking mouth of the inverted U-shaped pipeline is positioned at the position which is not lower than 500mm above the level of the mud-water interface, and the water outlet of the inverted U-shaped pipeline is positioned at the position which is at least 300mm below the level of the mud-water interface in the water outlet pool.
7. The SBR apparatus for rural domestic sewage treatment as set forth in claim 6, wherein: the electromagnetic valve (1) is arranged on the inverted U-shaped pipeline, and a flow baffle plate is arranged at the water suction port of the inverted U-shaped pipeline in the SBR pool.
8. The SBR apparatus for rural domestic sewage treatment as set forth in claim 6, wherein: the water outlet tank is internally provided with a lifting pump which is used for discharging clear water, and the liquid level height in the water outlet tank is lower than that in the SBR tank.
9. The SBR apparatus for rural domestic sewage treatment of claim 8, wherein: the inverted U-shaped pipeline water suction port is connected with a floating block (2) which changes synchronously with the height of the liquid level through a hose, and the periphery of the floating block (2) is provided with an opening.
10. The SBR apparatus for rural domestic sewage treatment of claim 9, wherein: the floating block (2) adopts a truncated cone-shaped structure with gradually enlarged diameter from bottom to top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311156151.1A CN116986729A (en) | 2023-09-07 | 2023-09-07 | SBR (sequencing batch reactor) process method and device for rural domestic sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311156151.1A CN116986729A (en) | 2023-09-07 | 2023-09-07 | SBR (sequencing batch reactor) process method and device for rural domestic sewage treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116986729A true CN116986729A (en) | 2023-11-03 |
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ID=88530362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311156151.1A Pending CN116986729A (en) | 2023-09-07 | 2023-09-07 | SBR (sequencing batch reactor) process method and device for rural domestic sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116986729A (en) |
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2023
- 2023-09-07 CN CN202311156151.1A patent/CN116986729A/en active Pending
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