CN113277674A - Aerobic tank, water treatment unit, toilet sewage treatment device and treatment method - Google Patents
Aerobic tank, water treatment unit, toilet sewage treatment device and treatment method Download PDFInfo
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- CN113277674A CN113277674A CN202110549883.1A CN202110549883A CN113277674A CN 113277674 A CN113277674 A CN 113277674A CN 202110549883 A CN202110549883 A CN 202110549883A CN 113277674 A CN113277674 A CN 113277674A
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- 239000010865 sewage Substances 0.000 title claims abstract description 97
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005273 aeration Methods 0.000 claims abstract description 53
- 230000000694 effects Effects 0.000 claims abstract description 17
- 239000010802 sludge Substances 0.000 claims description 61
- 229910052760 oxygen Inorganic materials 0.000 claims description 25
- 239000001301 oxygen Substances 0.000 claims description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 24
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 21
- 229910052698 phosphorus Inorganic materials 0.000 claims description 21
- 239000011574 phosphorus Substances 0.000 claims description 21
- 244000005700 microbiome Species 0.000 claims description 19
- 238000003860 storage Methods 0.000 claims description 16
- 241000894006 Bacteria Species 0.000 claims description 14
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 6
- 241000244203 Caenorhabditis elegans Species 0.000 claims description 4
- 230000029087 digestion Effects 0.000 claims description 4
- 235000013601 eggs Nutrition 0.000 claims description 4
- 235000015097 nutrients Nutrition 0.000 claims description 4
- 230000035755 proliferation Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 241001148470 aerobic bacillus Species 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
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- 238000001556 precipitation Methods 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 description 7
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- 238000011001 backwashing Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004332 deodorization Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
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- 238000012545 processing Methods 0.000 description 2
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Images
Classifications
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
- C02F2103/005—Black water originating from toilets
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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
Abstract
The invention discloses an aerobic tank, a water treatment unit, a toilet sewage treatment device and a treatment method, which relate to the field of sewage treatment equipment and comprise the following steps: the aeration unit is respectively communicated with the main aerobic zone and the auxiliary aerobic zone, the aeration amount in the main aerobic zone is greater than that of the auxiliary aerobic zone, and the auxiliary aerobic zone is provided with a first exhaust port for exhausting; the aerobic tank is divided into the main aerobic zone and the auxiliary aerobic zone, the main aerobic zone is arranged in the auxiliary aerobic zone, the auxiliary aerobic zone has the function of the anoxic tank under the condition of not changing the whole volume, namely under the condition of not changing the occupied space of the whole water treatment device, the working volume of the anoxic tank is increased, the function of the aerobic tank is not influenced, the sewage treatment effect is improved, and the aerobic tank has the advantages of simple structure and low cost.
Description
Technical Field
The invention relates to the field of sewage treatment equipment, in particular to an aerobic tank, a water treatment unit, a toilet sewage treatment device and a treatment method.
Background
With the development of science and technology, environmental pollution is a serious problem, wherein sewage, which is important in treating a plurality of environmental problems, includes industrial sewage and domestic sewage, and if the sewage is directly discharged without being completely purified, the sewage enters the water circulation system of the earth again, and the ecological environment is destroyed, and the sewage also enters human bodies, so that the health of human beings is influenced.
The sewage treatment in the prior art adopts a unified treatment mode, sewage enters a sewage treatment station through a pipe network system, the sewage treatment station adopts A2O or an inverted A2O method to carry out centralized treatment on the sewage, but the centralized treatment of the sewage is difficult to realize in areas where the pipe network is not laid, and the pipe network is utilized to transport the sewage, so that the cost is increased, and the maintenance of the pipe network is complicated.
A3O is an improved nitrogen and phosphorus removal process in the sewage treatment process, which is characterized in that a pre-denitrification area of return sludge is additionally arranged in front of an anaerobic tank of the traditional A2O process, for example, the application number is '201710489966. X', and an invention patent named as 'anoxic-anaerobic-anoxic-aerobic-membrane component treatment method' discloses an A3O process, which comprises a pre-denitrification tank, an anaerobic tank, an anoxic tank, an aerobic tank and an MBR membrane tank which are sequentially connected, wherein the pre-denitrification tank is arranged to enable biochemical sludge to return to the pre-denitrification tank, meanwhile, raw sewage enters the pre-denitrification tank, microorganisms use organic matters in inlet water as a carbon source to remove nitrates in the return sludge and eliminate the adverse effect of the nitrates on the anaerobic phosphorus removal, although the pre-denitrification tank is arranged to eliminate the effect on the anaerobic phosphorus removal, the pre-denitrification tank is used as the anoxic tank, and the content of oxygen in the sewage needs to be kept to be certain, after sewage in the pre-denitrification tank flows into the anaerobic tank, oxygen contained in the pre-denitrification tank influences the working environment of anaerobic microorganisms, the sewage needs to stay for more time in the anaerobic tank, the treatment efficiency is reduced, and in-situ treatment of the sewage cannot be realized due to the fact that the sewage treatment tank occupies a large area.
In domestic sewage, the organic load of lavatory sewage is high, nitrogen phosphorus content is high, the suspended solid concentration is big, and the processing degree of difficulty is higher, and when utilizing the pipe network transportation, the pipe network load is great, in case the condition that takes place the pipe network and leak, will influence the surrounding environment greatly.
Therefore, there is a need for a toilet sewage treatment device with a simple structure, which can realize in-situ sewage treatment and has a good sewage treatment effect.
Disclosure of Invention
The invention aims to provide an aerobic tank, a water treatment unit, a toilet sewage treatment device and a treatment method, which are used for solving the problems in the prior art, have simple structure, can realize sewage in-situ treatment and have good sewage treatment effect.
In order to achieve the purpose, the invention provides the following scheme: the invention provides an aerobic tank, which comprises a main aerobic zone, an auxiliary aerobic zone and an aeration unit, wherein the auxiliary aerobic zone is communicated with an anoxic tank, the main aerobic zone is arranged in the auxiliary aerobic zone, the main aerobic zone is communicated with the auxiliary aerobic zone, the aeration unit is respectively communicated with the main aerobic zone and the auxiliary aerobic zone, the aeration amount in the main aerobic zone is greater than that of the auxiliary aerobic zone, and a first exhaust port for exhausting is arranged on the auxiliary aerobic zone.
Preferably, the air outlet of the aeration unit is respectively connected with the first aeration pipeline and the second aeration pipeline, one end of the first aeration pipeline, which is far away from the aeration unit, extends into the bottom of the main aerobic zone, and one end of the second aeration pipeline, which is far away from the aeration unit, extends into the bottom of the auxiliary aerobic zone.
The invention also provides a water treatment unit applying the aerobic tank, which comprises a box body, wherein a strict anaerobic tank, the anoxic tank and the auxiliary aerobic zone which are sequentially connected are arranged in the box body, the strict anaerobic tank, the anoxic tank and the auxiliary aerobic zone are partitioned by vertical partition plates, the strict anaerobic tank is provided with an overflow port communicated with the anoxic tank, the bottom of the anoxic tank is communicated with the bottom of the auxiliary aerobic zone, a partition plate for partitioning the main aerobic zone and the auxiliary aerobic zone is arranged between the main aerobic zone and the auxiliary aerobic zone, the bottom of the main aerobic zone is communicated with the bottom of the auxiliary aerobic zone, and the upper end of the box body is provided with a first exhaust port.
Preferably, the bottom in vice aerobic zone is equipped with first sludge outlet, first sludge outlet through first sludge return line with strict anaerobism pond is connected, be provided with the backwash pump on the first sludge return line, first sludge outlet still is connected with first mud unloading pipeline and first high-pressure flushing line.
Preferably, the aeration unit sets up the box upper end, the gas outlet of aeration unit still is connected with the third aeration pipeline, the third aeration pipeline is kept away from the one end of aeration unit stretches into the bottom in oxygen deficiency pond, intermittent type nature is for provide oxygen in the oxygen deficiency pond.
The invention also provides a toilet sewage treatment device applying the sewage treatment unit, which comprises an anaerobic tank connected with a toilet sewer, the water treatment unit and a treated water collection unit, wherein the anaerobic tank is communicated with the strict anaerobic tank through a pipeline, the pipeline is provided with a lifting pump, the auxiliary aerobic zone is connected with the strict anaerobic tank through a second sludge return pipeline, and the main aerobic zone is communicated with the treated water collection unit.
Preferably, the upper parts of the inner cavities of the anaerobic tank and the box body are provided with grid plates, the grid plates are provided with deodorizing fillers, the upper end of the anaerobic tank is provided with a second exhaust port, and the anaerobic tank and the box body are provided with liquid level sensors.
Preferably, strict anaerobic tank and oxygen deficiency bottom of the pool portion are equipped with the second mud export, and the second mud exit linkage second mud unloading pipeline and second high pressure wash the pipeline, anaerobic tank bottom is provided with the third mud export, the third mud exit linkage has third mud unloading pipeline and third high pressure to wash the pipeline.
Preferably, the treated water collecting unit comprises at least one filter, an ultraviolet sterilizer and a water storage tank, the filter is arranged in the main aerobic zone and is connected with the partition plate, the filter is connected with a water inlet of the ultraviolet sterilizer through a suction pump, a water outlet of the ultraviolet sterilizer is communicated with the water storage tank, a water outlet of the water storage tank is respectively connected with a backwashing water pipeline and a water drainage pipeline, and one end of the backwashing water pipeline, which is far away from the water storage tank, is connected with the filter and is used for cleaning the filter.
The invention also provides a treatment method of the toilet sewage treatment device, which comprises the following steps:
s1: toilet sewage enters the anaerobic tank through a water inlet pipeline of the anaerobic tank, preliminary anaerobic digestion of the excrement causes liquefaction of excrement, precipitation of roundworm eggs and removal of part of impurities with larger particle sizes, oxygen entering along with the sewage is consumed, and meanwhile, returned sludge is digested and reduced;
s2: sewage in the anaerobic tank is pumped out by a lifting pump and enters the strict anaerobic tank, the oxygen content in the strict anaerobic tank is greatly reduced through the oxygen consumption of the anaerobic tank, the activity of anaerobic microorganisms is enhanced, the treatment effect is enhanced, the sewage is further hydrolyzed and acidified, the biodegradability of the sewage is improved, aerobic granular sludge in the returned sludge enters the strict anaerobic tank to die, nutrient substances released by cell rupture are fully degraded and utilized by microorganisms with slower proliferation rate, and the returned sludge is further digested and reduced;
s3: the sewage in the strict anaerobic tank overflows to an anoxic tank, denitrification is carried out to remove nitrate nitrogen, and facultative microorganisms and biological membranes in the anoxic tank degrade organic matters in water;
s4: sewage in the anoxic tank flows into the main aerobic zone and the auxiliary aerobic zone, organic matters are rapidly degraded under the action of aerobic bacteria, and phosphorus in the sewage is enriched into microorganisms by phosphorus accumulating bacteria through absorbing a large amount of phosphorus;
s5: the treated water in the main aerobic zone enters an ultraviolet sterilizer after being filtered by a filter, and the sterilized treated water enters a water storage tank
Compared with the prior art, the invention has the following technical effects:
1. in the invention, the aerobic tank is divided into a main aerobic zone and an auxiliary aerobic zone, the main aerobic zone is arranged inside the auxiliary aerobic zone, in the A2O process, the anoxic tank is connected with the aerobic tank, when sewage in the anoxic tank flows into the aerobic tank, the sewage firstly enters the auxiliary aerobic zone and then enters the main aerobic zone, because the aeration quantity of the auxiliary aerobic zone is less than that of the main aerobic zone, the oxygen content in the auxiliary aerobic zone is less than that of the main aerobic zone, and facultative microorganisms can work in the auxiliary aerobic zone, namely the auxiliary aerobic zone has the functions of the anoxic tank and the aerobic tank, the volume of the anoxic tank can be increased under the condition of not increasing the volume of the whole sewage treatment tank, the sewage treatment capacity of the anoxic tank is improved, the function of the aerobic tank is not influenced, and the sewage treatment effect of the whole sewage treatment tank is improved.
2. In the invention, a strict anaerobic tank, an anoxic tank and a secondary aerobic zone which are sequentially connected are arranged in one box body, and each reaction tank is placed in the same box body and is not influenced mutually, so that the whole floor area is reduced.
3. According to the invention, the anaerobic tank is arranged in front of the strict anaerobic tank, before toilet sewage enters the strict anaerobic tank, the toilet sewage firstly enters the anaerobic tank, the anaerobic tank can preferentially consume oxygen in the water and can treat the water in advance, the sewage with low oxygen content is conveyed into the strict anaerobic tank by the lifting pump, the working efficiency of anaerobic microorganisms can be greatly improved in a low-oxygen environment, and the sewage treatment effect is further improved.
4. The aerobic tank is arranged in a subarea manner, so that the volume of the anoxic tank can be correspondingly reduced, and the strict anaerobic tank, the anoxic tank and the aerobic tank are all arranged in the same box body, so that the volume of the whole water treatment device is greatly reduced, the whole structure occupies small floor area, the whole sewage treatment process is provided, and the in-situ treatment of sewage can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic view showing the construction of a sewage treatment apparatus for toilets according to the present invention;
wherein, 1, an anaerobic pool; 2. a strict anaerobic tank; 3. an anoxic tank; 4. a secondary aerobic zone; 5. a primary aerobic zone; 6. an aeration unit; 7. a first aeration line; 8. a second aeration line; 9. a third aeration pipeline; 10. a first sludge return line; 11. a second sludge return line; 12. a water inlet pipeline; 13. a filter; 14. an ultraviolet sterilizer; 15. a water storage tank; 16. backwashing water pipelines; 17. a drain line; 18. a flow meter; 19. a sludge sampling port; 20. a water replenishing pipeline; 21. a first sludge emptying pipeline; 22. a first high pressure flush line; 23. a third high pressure flush line; 24. a third sludge emptying pipeline; 25. a first exhaust port; 26. a second exhaust port; 27. a lift pump; 28. a reflux pump; 29. a suction pump; 30. a liquid level sensor; 31. a grid plate; 32. a deodorizing filler.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an aerobic tank, a water treatment unit, a toilet sewage treatment device and a treatment method, which are used for solving the problems in the prior art, have simple structure, can realize sewage in-situ treatment and have good sewage treatment effect.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, an aerobic tank is provided, which includes a main aerobic zone 5, an auxiliary aerobic zone 4 and an aeration unit 6, wherein the auxiliary aerobic zone 4 is communicated with a pre-anoxic tank 3, the main aerobic zone 5 is disposed in the auxiliary aerobic zone 4, the main aerobic zone 5 is communicated with the auxiliary aerobic zone 4, the communication can be performed in such a way that sewage in the auxiliary aerobic zone 4 overflows into the main aerobic zone 5, or the middle part of the main aerobic zone 5 is communicated with the auxiliary aerobic zone 4, or the bottom part of the main aerobic zone 5 is communicated with the auxiliary aerobic zone 4, etc., the aeration unit 6 is respectively communicated with the main aerobic zone 5 and the auxiliary aerobic zone 4 for aerating the main aerobic zone 5 and the auxiliary aerobic zone 4, thereby increasing oxygen content in the main aerobic zone 5 and the auxiliary aerobic zone 4, the aeration amount in the main aerobic zone 5 is greater than that in the auxiliary aerobic zone 4, the auxiliary aerobic zone 4 is provided with a first exhaust port 25 for exhausting air, the facultative microorganisms can also work in the auxiliary aerobic zone 4, the auxiliary aerobic zone 4 has the functions of the anoxic tank 3 and the aerobic tank, the volume of the anoxic tank 3 can be increased under the condition that the volume of the whole sewage treatment tank is not increased and the function of the aerobic tank is not influenced, the treatment capacity of the anoxic tank 3 on sewage is improved, the treatment effect of the whole sewage treatment tank on sewage is further improved, in addition, the volume of the anoxic tank 3 can also be properly reduced, the volume of the whole sewage treatment tank is further reduced, in-situ treatment on sewage can be realized, and after the volume of the anoxic tank 3 is reduced, the working efficiency of the anoxic tank 3 is not reduced due to the existence of the auxiliary aerobic zone 4.
The air outlet of the aeration unit 6 is respectively connected with a first aeration pipeline 7 and a second aeration pipeline 8, one end of the first aeration pipeline 7, which is far away from the aeration unit 6, extends into the bottom of the main aerobic zone 5, one end of the second aeration pipeline 8, which is far away from the aeration unit 6, extends into the bottom of the auxiliary aerobic zone 4, and the aeration unit 6 can be a common fan, a blower or other oxygen charging equipment.
The invention also provides a water treatment unit applying the aerobic tank, which comprises a box body, wherein a strict anaerobic tank 2, an anoxic tank 3 and an auxiliary aerobic zone 4 which are sequentially connected are arranged in the box body, each reaction zone is placed in the same box body, each reaction tank is not influenced mutually, the whole occupied area is reduced, so that the sewage treatment in situ is favorably realized, a pipe network system is not arranged, the defects generated when the pipe network system is arranged are avoided, the strict anaerobic tank 2, the anoxic tank 3 and the auxiliary aerobic zone 4 are partitioned by vertical clapboards, or the strict anaerobic tank 2, the anoxic tank 3 and the auxiliary aerobic zone 4 are all independent tank bodies, the tank bodies are arranged in the box body in a clinging manner, gaps between the tank bodies and the inner wall of the box body are filled, the strict anaerobic tank 2 is provided with an overflow port communicated with the anoxic tank 3, and the size of the overflow port can be determined according to the actual flow, or the strict anaerobic tank 2 is directly set to be of a structure with a full-open top, the bottom of the anoxic tank 3 is communicated with the bottom of the auxiliary aerobic zone 4, the size of the communication channel is determined according to the sewage flow, a partition plate for partitioning the main aerobic zone 5 and the auxiliary aerobic zone 4 is arranged between the main aerobic zone 5 and the auxiliary aerobic zone 4, the bottom of the main aerobic zone 5 is communicated with the bottom of the auxiliary aerobic zone 4, and the upper end of the box body is provided with a first exhaust port 25.
In order to fully utilize the activated sludge generated by the system, a first sludge outlet is formed in the bottom of the auxiliary aerobic zone 4 and is connected with the strict anaerobic tank 2 through a first sludge return pipeline 10, a return pump 28 is arranged on the first sludge return pipeline 10 and returns the activated sludge into the strict anaerobic tank 2, the activated sludge dies in an anaerobic environment, nutrient substances released by cell rupture are fully degraded and utilized by microorganisms with slow proliferation rate such as anaerobic phosphorus-releasing bacteria, sulfate reducing bacteria and denitrifying bacteria, the sludge yield is reduced, the first sludge outlet is further connected with a first sludge emptying pipeline 21 and a first high-pressure flushing pipeline 22, the first sludge emptying pipeline 21 is used for emptying the sludge in the auxiliary aerobic zone 4, and the first high-pressure flushing pipeline 22 is used for cleaning the auxiliary aerobic zone 4.
The aeration unit 6 is arranged at the upper end of the box body, the air outlet of the aeration unit 6 is also connected with a third aeration pipeline 9, one end of the third aeration pipeline 9, which is far away from the aeration unit 6, extends into the bottom of the anoxic tank 3, and oxygen is provided for the anoxic tank 3 intermittently.
The invention also provides a toilet sewage treatment device applying the water treatment unit, which comprises an anaerobic tank 1 connected with a toilet sewer, a water treatment unit and a treated water collection unit, wherein the anaerobic tank 1 is communicated with the strict anaerobic tank 2 through a pipeline, the pipeline is provided with a lifting pump 27, as partial oxygen is mixed in water when the toilet is flushed, the anaerobic tank 1 plays a role of consuming water and carrying oxygen, phosphorus-accumulating bacteria releases phosphorus under anaerobic conditions to create conditions for subsequent aerobic phosphorus absorption, meanwhile, the excrement is primarily anaerobically digested to liquefy the excrement, precipitate roundworm eggs and remove partial impurities with larger grain sizes, so that the impurities with larger grain sizes entering the strict anaerobic tank 2 are fewer and the oxygen content is low, the working efficiency and the working effect of anaerobic microorganisms in the strict anaerobic tank 2 are improved, the sewage is further hydrolyzed and acidified, and the biodegradability is enhanced, vice good oxygen district 4 is connected with strict anaerobism pond 2 through second mud return line 11, main good oxygen district 5 and processing water collection unit intercommunication, anaerobism pond 1 is also digested the activated sludge in vice good oxygen district 4, further control the output of mud, second mud return line 11 can be connected with vice good oxygen district 4 alone, and set up backwash pump 28 on the pipeline, second mud return line 11 also can be as the branch of first mud return line 10, reduce the whole length of pipeline, when second mud return line 11 is as the branch of first mud return line 10, the hookup location of second mud return line 11 and first mud return line 10 should be located the one end that first mud export was kept away from to backwash pump 28.
In order to avoid the foul smell that produces among the sewage treatment process to give off to external influence external environment, inner chamber upper portion at anaerobism pond 1 and box all is provided with comb plate 31, deodorization filler 32 has been placed on comb plate 31, second gas vent 26 has been seted up to anaerobism pond 1 upper end, the foul smell is discharged through respective gas vent behind deodorization filler 32, all be provided with level sensor 30 on anaerobism pond 1 and the box, be used for the real-time supervision liquid level, avoid liquid submergence deodorization filler 32, can set up the overflow mouth on the lateral wall upper portion of anaerobism pond 1 and box, prevent that inside liquid from overfilling and influencing going on of whole work.
In order to handle at anaerobism pond 1, the interior sedimentary impurity of strict anaerobism pond 2 and oxygen deficiency pond 3, strict anaerobism pond 2 and 3 bottoms in oxygen deficiency pond are equipped with the second mud export, second mud exit linkage second mud unloading pipeline and second high pressure flushing line, anaerobism pond 1 bottom is provided with the third mud export, the third mud exit linkage has third mud unloading pipeline 24 and third high pressure flushing line 23, because strict anaerobism pond 2, oxygen deficiency pond 3 and vice good oxygen district 4 all set up in the box, consequently also can a mud unloading pipeline and high pressure flushing line of the mud export sharing of three, as shown in figure 1.
The treated water collecting unit comprises at least one filter 13, an ultraviolet sterilizer 14 and a water storage tank 15, wherein the filter 13 is arranged in the main aerobic zone 5, the filter 13 is connected with a partition plate and used for fixing the position of the filter 13 in the main aerobic zone 5, the filter 13 is connected with a water inlet of the ultraviolet sterilizer 14 through a suction pump 29, the ultraviolet sterilizer 14 kills pathogenic bacteria in treated water, a water outlet of the ultraviolet sterilizer 14 is communicated with the water storage tank 15, a water outlet of the water storage tank 15 is respectively connected with a backwashing water pipeline 16 and a water drainage pipeline 17, one end of the backwashing water pipeline 16, which is far away from the water storage tank 15, is connected with the filter 13, the filter 13 is cleaned through backwashing water flow, the shape of the filter 13 can be a long plate shape or a cylindrical shape, and the like, the filter 13 can adopt a microporous filter membrane or other filtering structures, when the microporous filter membrane is adopted, a water replenishing pipeline 20 needs to be arranged on the box body, when the liquid level sensor 30 detects that the liquid level is lower and part of the microporous filter membrane is exposed in the anhydrous environment, water is supplemented into the main aerobic zone 5 through the water supplementing pipeline 20, and the microporous filter membrane is prevented from being dried and losing the filtering effect.
A flow meter 18 is provided in the line between the suction pump 29 and the ultraviolet sterilizer 14 to detect the pumping flow rate of the suction pump 29.
And corresponding valves are arranged on each pipeline, and whether the pipeline runs or not can be controlled by controlling the valves on different pipelines.
The bottom of the auxiliary aerobic zone 4 is provided with a sludge sampling port 19 for detecting sludge in real time.
The invention also provides a treatment method of the toilet sewage treatment device, which comprises the following steps:
s1: toilet sewage enters the anaerobic tank 1 through a water inlet pipeline 12 of the anaerobic tank 1, the excrement is subjected to preliminary anaerobic digestion to liquefy excrement, precipitate roundworm eggs and remove part of impurities with larger particle sizes, oxygen entering along with the sewage is consumed, phosphorus is released by phosphorus accumulating bacteria under an anaerobic condition to create a condition for subsequent aerobic phosphorus absorption, meanwhile, returned sludge is digested for reduction, and the impurities precipitated at the bottom of the anaerobic tank 1 and undigested sludge can be discharged through a third sludge emptying pipeline 24;
s2: the sewage in the anaerobic tank 1 is pumped out by a lifting pump 27 and enters the strict anaerobic tank 2, the oxygen content in the strict anaerobic tank 2 is greatly reduced through the oxygen consumption of the anaerobic tank 1, the activity of anaerobic microorganisms is enhanced, the treatment effect is enhanced, the sewage is further hydrolyzed and acidified, the biodegradability of the sewage is improved, aerobic granular sludge in the returned sludge enters the strict anaerobic tank 2 to die, nutrient substances released by cell rupture are fully degraded and utilized by microorganisms with slower proliferation rate, such as anaerobic phosphorus-releasing bacteria, sulfate reducing bacteria, denitrifying bacteria and the like, the returned sludge is further digested and reduced, meanwhile, phosphorus-accumulating bacteria without phosphorus release further release phosphorus under the anaerobic condition, and impurities and undigested sludge deposited at the bottom of the strict anaerobic tank 2 can be discharged through a second sludge emptying pipeline;
s3: the sewage in the strict anaerobic tank 2 overflows to an anoxic tank 3, denitrifying bacteria work to convert nitrate into nitrogen, denitrification is carried out to remove nitrate nitrogen, and facultative microorganisms and biological membranes in the anoxic tank 3 degrade organic matters in water;
s4: sewage in the anoxic tank 3 flows into the main aerobic zone 5 and the auxiliary aerobic zone 4, organic matters are rapidly degraded under the action of aerobic bacteria, phosphorus-accumulating bacteria enrich phosphorus in the sewage into microorganisms through absorbing a large amount of phosphorus, the purpose of removing phosphorus is achieved through sludge discharge, and meanwhile nitrifying bacteria convert ammonia nitrogen into nitrate through digestion, so that the ammonia nitrogen is removed; the sludge in the auxiliary aerobic zone 4 flows back to the strict anaerobic tank 2 and the anaerobic tank 1 through a first sludge return pipeline 10 and a second sludge return pipeline 11;
s5: the treated water in the main aerobic zone 5 enters an ultraviolet sterilizer 14 after being filtered by a filter 13, and the sterilized treated water enters a water storage tank 15.
The adaptation according to the actual needs is within the scope of the invention.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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. Any reference sign in a claim should not be construed as limiting the claim concerned.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The aerobic tank is characterized by comprising a main aerobic zone, an auxiliary aerobic zone and an aeration unit, wherein the auxiliary aerobic zone is communicated with the anoxic tank, the main aerobic zone is arranged in the auxiliary aerobic zone, the main aerobic zone is communicated with the auxiliary aerobic zone, the aeration unit is respectively communicated with the main aerobic zone and the auxiliary aerobic zone, the aeration quantity in the main aerobic zone is greater than that of the auxiliary aerobic zone, and a first exhaust port for exhausting is arranged on the auxiliary aerobic zone.
2. The aerobic tank as claimed in claim 1, wherein the air outlet of the aeration unit is connected to the first aeration pipeline and the second aeration pipeline, respectively, the end of the first aeration pipeline far away from the aeration unit extends into the bottom of the primary aerobic zone, and the end of the second aeration pipeline far away from the aeration unit extends into the bottom of the secondary aerobic zone.
3. The water treatment unit using the aerobic tank as claimed in claim 1 or 2, which comprises a box body, wherein a strict anaerobic tank, the anoxic tank and the auxiliary aerobic zone are arranged in the box body, the strict anaerobic tank, the anoxic tank and the auxiliary aerobic zone are sequentially connected and partitioned by a vertical partition plate, the strict anaerobic tank is provided with an overflow port communicated with the anoxic tank, the bottom of the anoxic tank is communicated with the bottom of the auxiliary aerobic zone, a partition plate for partitioning the main aerobic zone and the auxiliary aerobic zone is arranged between the main aerobic zone and the auxiliary aerobic zone, the bottom of the main aerobic zone is communicated with the bottom of the auxiliary aerobic zone, and the upper end of the box body is provided with the first exhaust port.
4. The water treatment unit of claim 3, wherein a first sludge outlet is arranged at the bottom of the secondary aerobic zone, the first sludge outlet is connected with the strict anaerobic tank through a first sludge return pipeline, a return pump is arranged on the first sludge return pipeline, and the first sludge outlet is further connected with a first sludge emptying pipeline and a first high-pressure flushing pipeline.
5. The water treatment unit of claim 4, wherein the aeration unit is arranged at the upper end of the box body, a third aeration pipeline is connected to the air outlet of the aeration unit, and one end of the third aeration pipeline, which is far away from the aeration unit, extends into the bottom of the anoxic tank, so as to intermittently provide oxygen for the anoxic tank.
6. A sanitary sewage treatment apparatus using the sewage treatment unit according to any one of claims 3 to 5, comprising an anaerobic tank connected to a sanitary sewer, said water treatment unit, and a treated water collecting unit, wherein said anaerobic tank is connected to said strict anaerobic tank through a pipe provided with a lift pump, said secondary aerobic zone is connected to said strict anaerobic tank through a second sludge return pipe, and said primary aerobic zone is connected to said treated water collecting unit.
7. The toilet sewage treatment device of claim 6, wherein the anaerobic tank and the upper part of the inner cavity of the tank body are respectively provided with a grate plate, deodorizing fillers are placed on the grate plates, the upper end of the anaerobic tank is provided with a second exhaust port, and the anaerobic tank and the tank body are respectively provided with a liquid level sensor.
8. The lavatory sewage treatment plant of claim 6, wherein the strictly anaerobic tank and the anoxic tank have a second sludge outlet at the bottom thereof, the second sludge outlet being connected to a second sludge blowdown line and a second high pressure flushing line, and the anaerobic tank has a third sludge outlet at the bottom thereof, the third sludge outlet being connected to a third sludge blowdown line and a third high pressure flushing line.
9. A lavatory sewage treatment device as claimed in claim 6, wherein the treated water collection unit comprises at least one filter, an ultraviolet sterilizer and a water storage tank, the filter is disposed in the main aerobic zone and connected to the partition, the filter is connected to a water inlet of the ultraviolet sterilizer via a suction pump, a water outlet of the ultraviolet sterilizer is communicated with the water storage tank, a water outlet of the water storage tank is connected to a backwash water pipe and a water discharge pipe, respectively, and an end of the backwash water pipe remote from the water storage tank is connected to the filter for cleaning the filter.
10. A treatment method of a toilet sewage treatment device is characterized by comprising the following steps:
s1: toilet sewage enters the anaerobic tank through a water inlet pipeline of the anaerobic tank, preliminary anaerobic digestion of the excrement causes liquefaction of excrement, precipitation of roundworm eggs and removal of part of impurities with larger particle sizes, oxygen entering along with the sewage is consumed, and meanwhile, returned sludge is digested and reduced;
s2: sewage in the anaerobic tank is pumped out by a lifting pump and enters the strict anaerobic tank, the oxygen content in the strict anaerobic tank is greatly reduced through the oxygen consumption of the anaerobic tank, the activity of anaerobic microorganisms is enhanced, the treatment effect is enhanced, the sewage is further hydrolyzed and acidified, the biodegradability of the sewage is improved, aerobic granular sludge in the returned sludge enters the strict anaerobic tank to die, nutrient substances released by cell rupture are fully degraded and utilized by microorganisms with slower proliferation rate, and the returned sludge is further digested and reduced;
s3: the sewage in the strict anaerobic tank overflows to an anoxic tank, denitrification is carried out to remove nitrate nitrogen, and facultative microorganisms and biological membranes in the anoxic tank degrade organic matters in water;
s4: sewage in the anoxic tank flows into the main aerobic zone and the auxiliary aerobic zone, organic matters are rapidly degraded under the action of aerobic bacteria, and phosphorus in the sewage is enriched into microorganisms by phosphorus accumulating bacteria through absorbing a large amount of phosphorus;
s5: the treated water in the main aerobic zone enters the ultraviolet sterilizer after being filtered by the filter, and the sterilized treated water enters the water storage tank.
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