CN114873869A - Sewage treatment and purification system and method - Google Patents
Sewage treatment and purification system and method Download PDFInfo
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- CN114873869A CN114873869A CN202210681446.XA CN202210681446A CN114873869A CN 114873869 A CN114873869 A CN 114873869A CN 202210681446 A CN202210681446 A CN 202210681446A CN 114873869 A CN114873869 A CN 114873869A
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- 239000010865 sewage Substances 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000000746 purification Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
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- 230000008569 process Effects 0.000 claims abstract description 38
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 23
- 239000011574 phosphorus Substances 0.000 claims abstract description 23
- 239000010802 sludge Substances 0.000 claims description 50
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- 239000003344 environmental pollutant Substances 0.000 claims description 7
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- 238000010992 reflux Methods 0.000 claims description 7
- 239000000706 filtrate Substances 0.000 claims description 6
- 238000004332 deodorization Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
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- 235000014469 Bacillus subtilis Nutrition 0.000 claims description 3
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- 238000001914 filtration Methods 0.000 claims 1
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/347—Use of yeasts or fungi
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a sewage treatment and purification system, which comprises a grid pool, an adjusting pool, an improved AOO process pool, a high-efficiency micro-aeration biological pool, a high-efficiency phosphorus removal pool, a high-efficiency filter pool and a clean water pool, wherein the grid pool is connected with the adjusting pool; the grid pond, the adjusting pond, the improved AOO process pond, the high-efficiency micro-aeration biological pond, the high-efficiency dephosphorization pond, the high-efficiency filter pond and the clean water pond are sequentially connected through pipelines; the bottom end of the high-efficiency dephosphorization tank is connected with the improved AOO process tank through a pipeline; the bottom end of the high-efficiency filter tank is connected with the improved AOO process tank through a pipeline. The invention can reasonably select the process route according to the quality of the sewage and the treatment requirement, and the treated water quality reaches the standard and is discharged. The device has the advantages of high efficiency, energy conservation, low noise, reliable operation and simple and convenient maintenance and management. The system device of the invention has compact, reasonable and beautiful design, realizes function division and is convenient for operation and management. The device can fully treat the odor generated in the domestic sewage treatment process and reduce the influence of the odor on surrounding residents.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment and purification system and method.
Background
The urban river water environment ecosystem of China is generally in an unbalanced state, water bodies are blacked and smelly, the landscape effect is poor, and the pollution is serious, the basic reason is that organic pollutants discharged into the river greatly exceed the containing amount of the water environment, due to the shortage of sewage treatment facilities, old industrial wastewater and domestic sewage are directly discharged into a river channel, the river channel is generally silted, the drainage of the river channel is not smooth, the incoming water in the river channel is insufficient, the flow rate of water is slow, the self-purification capacity of the water bodies is low, the pollutants cannot be technically discharged, the pollution of the water bodies of inland rivers is serious, the eutrophication problems such as bloom of the small-ring algae in the porous environment and the like occur, and part of the river channels are seasonally black and smelly.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to construct and perfect a river surge area sewage treatment system to ensure that the river surge water flows and to minimize land borrowing and land collection so as to ensure smooth construction and reduce construction cost.
Disclosure of Invention
In view of the above, the present invention provides a sewage treatment and purification system and method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a sewage treatment and purification system comprises a grating tank, an adjusting tank, an improved AOO process tank, a high-efficiency micro-aeration biological tank, a high-efficiency dephosphorization tank, a high-efficiency filter tank and a clean water tank;
wherein the grid pond, the adjusting pond, the improved AOO process pond, the high-efficiency micro-aeration biological pond, the high-efficiency dephosphorization pond, the high-efficiency filter pond and the clean water pond are sequentially connected through pipelines;
the bottom end of the high-efficiency dephosphorization tank is connected with the improved AOO process tank through a pipeline;
the bottom end of the high-efficiency filter tank is connected with the improved AOO process tank through a pipeline.
Further, a deodorization device is arranged in the regulating tank; an aeration device, a dosing device and a deodorization device are arranged in the improved AOO process tank; an aeration device is arranged in the high-efficiency micro-aeration biological tank.
The medicine contained in the medicine adding device is polyaluminium chloride.
Furthermore, a lifting pump is arranged in the grid pond, and sewage enters the regulating pond through the lifting pump.
The beneficial effect of adopting the further scheme is that: the sewage automatically flows into a mechanical fine grid to remove part of suspended matters, and then enters into a regulating tank.
The regulating tank can regulate the water quantity of the system, and because the instantaneous discharge water quantity of the sewage is not uniform within a fixed time, the treatment capacity of the system is uniform. A pool must be provided to store the sewage. The volume of the regulating reservoir must be such that there is sufficient water quantity regulating capacity. Meanwhile, the regulating tank can homogenize water quality, different types of sewage are different in water quality, and different concentrations of sewage discharged at different times are different. The adjusting tank can also play a role in pre-sedimentation, the sewage contains more inorganic and organic particles with specific gravity slightly larger than that of water, suspended matters and the like, and part of the substances can be precipitated in the adjusting tank to form sludge.
Further, the improved AOO process pool comprises an anaerobic pool, an anoxic pool and an aerobic pool; the anaerobic tank, the anoxic tank and the aerobic tank are sequentially connected through pipelines; the anaerobic tank is connected with the regulating tank, and the aerobic tank is connected with the high-efficiency micro-aeration biological tank.
Still further, the anaerobic pool comprises clostridium butyricum and/or yeast;
the anoxic pond contains denitrifying phosphorus accumulating bacteria;
the aerobic pool comprises at least one of nitrobacteria, bacillus subtilis and photosynthetic bacteria.
The beneficial effect of adopting the further scheme is that: the improved AOO process pool is filled with elastic biological fillers, and a large number of microorganisms grow on the fillers to form a microbial film. Under the action of the microorganisms, organic matters (namely COD and BOD), animal and vegetable oil, ammonia nitrogen, phosphorus and the like in the sewage are decomposed and utilized by the microorganisms as nutrient substances, and substances of the microorganisms are synthesized or decomposed into carbon dioxide, water and nitrogen. Thereby removing organic matters (namely COD and BOD), ammonia nitrogen, phosphorus and the like in the sewage and purifying the effluent. The microbial film on the filling material in the tank is continuously aged and falls off, and simultaneously, a new microbial film continuously grows. Oxygen required for metabolism of microorganisms is provided by the aeration device.
Furthermore, the anaerobic tank, the anoxic tank and the aerobic tank are all connected with the aeration device; the anaerobic tank, the anoxic tank and the aerobic tank are all connected with the dosing device, and the anaerobic tank, the anoxic tank and the aerobic tank are all connected with the deodorizing device.
Further, the high-efficiency micro-aeration biological tank is a micro-aeration biological filter tank.
The beneficial effect of adopting the above-mentioned further scheme lies in: the high-efficiency micro-aeration biological tank can further reduce the content of pollutants in the sewage.
The high-efficiency phosphorus removal pool contains at least one phosphorus-accumulating bacterium.
Further, the sewage treatment and purification system also comprises a sludge concentration tank and a filter pressing tank; the sludge concentration tank is connected with the efficient dephosphorization tank through a pipeline, the top end of the sludge concentration tank is connected with the adjusting tank through a pipeline, and the bottom end of the sludge concentration tank is connected with the filter pressing tank;
the top end of the pressure filter tank is connected with the adjusting tank.
Furthermore, the sludge concentration tank is also provided with a deodorization device.
The method for removing each pollutant in the sewage comprises the following steps:
the removal of SS from the wastewater is mainly by precipitation. Inorganic particles and organic particles in the sewage are removed by natural sedimentation or activated sludge floc adsorption and are simultaneously precipitated with the activated sludge floc.
The BOD5 removal of the wastewater is microbialAdsorption and metabolism, and then separating the sludge from the water. The microorganisms in the biological membrane use one part of organic matters in the sewage to synthesize new cells under the aerobic condition, and decompose and metabolize the other part of organic matters to obtain energy required by cell synthesis, and the final product is CO 2 And H 2 O and the like. In the process of anabolism and catabolism, soluble organic matters (such as easily degradable organic matters like low molecular organic acids) directly enter the cell to be utilized, while non-soluble organic matters are firstly adsorbed on the surface of the microorganism and then enter the cell to be utilized after being hydrolyzed by enzyme.
The organic pollutants in the sewage can be divided into biodegradable organic matters and non-biodegradable organic matters. The biochemical removal method of the biodegradable organic matters mainly comprises two main types of anaerobic treatment and aerobic treatment. The anaerobic treatment is to carry out hydrolytic acidification treatment on organic matters in the sewage by anaerobic bacteria under the anaerobic condition and finally convert the organic matters into CH under the action of methane bacteria 4 And CO 2 (ii) a The aerobic treatment is to convert organic matters in the sewage into CH through the respiratory metabolism of bacteria under the aerobic condition by aerobic bacteria 4 And CO 2 . The removal of suspended non-biodegradable organic matters is mainly based on the adsorption of microorganisms, active bacteria have strong adsorption capacity on organic particles and colloids in the sewage, and then the organic matters in the sewage are removed through mud-water separation.
The biological denitrification is mainly completed through nitrification and denitrification, and the invention adopts a mode of refluxing the sewage to the anoxic tank, so that the biological denitrification condition can be created, and the denitrification rate reaches 60-85%.
The sewage dephosphorization mainly comprises two categories of biological dephosphorization and chemical dephosphorization. Biological phosphorus removal is generally adopted as a main raw material for domestic sewage, and chemical phosphorus removal is supplemented if necessary to ensure that the phosphorus concentration of effluent is within a standard range. The biological phosphorus removal is characterized in that phosphorus-accumulating bacteria in sewage are suppressed under an anaerobic condition to release phosphate in vivo, energy is generated to absorb and rapidly degrade organic matters, and the organic matters are converted into PHB (poly beta hydroxybutyrate) to be stored. When the phosphorus-accumulating bacteria enter aerobic conditions, PHB stored in a degradation body generates energy, and absorbs phosphorus in water for cell synthesis to form sludge with high phosphorus content, and the sludge is discharged together with residual sludge to achieve the purpose of phosphorus removal.
The invention also provides the sewage treatment and purification method, and the system is adopted for treatment and purification;
the method specifically comprises the following steps:
(1) introducing sewage into a grid pool, lifting the sewage into a regulating pool by using a grid pool lifting pump, regulating the water quality and the water quantity in the regulating pool, fully balancing the water quality and the water quantity, and then, introducing the sewage into an improved AOO process pool;
(2) the sewage improvement AAO process tank enters the high-efficiency micro-aeration biological tank after being sequentially treated by anaerobic microorganisms, anoxic microorganisms and aerobic microorganisms;
(3) aerating the sewage in the high-efficiency micro-aeration biological tank to further reduce the content of pollutants in the sewage;
(4) the high-efficiency micro-aeration biological tank discharges water, sewage enters the high-efficiency phosphorus removal tank, and the sewage after biological treatment in the high-efficiency phosphorus removal tank enters the high-efficiency micro-filter tank;
(5) and in the sludge separated by the high-efficiency dephosphorization tank, 10-20% of the sludge in mass fraction flows back to an anaerobic tank of the improved AAO process tank for denitrification treatment, and the rest is discharged into a sludge concentration tank for concentration.
(6) Carrying out pressure filtration on the sewage in a high-efficiency micro-filter by a filter to remove suspended matters, and then carrying out solid-liquid separation to obtain clear water and sludge;
(7) and (4) conveying the clear water obtained in the step (6) to a clear water tank for direct discharge, treating the sludge in a sludge concentration tank, concentrating the sludge in the sludge concentration tank, refluxing the supernatant to an adjusting tank, allowing the concentrated sludge to enter a filter pressing tank, performing pressure filtration in the filter pressing tank to obtain filtrate and mud cakes, refluxing the obtained filtrate to the adjusting tank, and taking out the mud cakes for outward transportation and stacking.
The invention has the beneficial effects that: the invention can reasonably select a process route according to the quality of sewage and the treatment requirement, and the treated water quality reaches the standard and is discharged; the operation is stable and reliable. The sewage is treated and then compounded with the first grade A standard of pollutant discharge Standard of urban Sewage treatment plant (GB 18918-2002). The device has the advantages of high efficiency, energy conservation, low noise, reliable operation and simple and convenient maintenance and management. The system device of the invention has compact, reasonable and beautiful design, realizes functional partitioning and is convenient for operation and management. The device can fully treat the odor generated in the domestic sewage treatment process and reduce the influence of the odor on surrounding residents.
Drawings
FIG. 1 is a schematic view of a sewage treatment and purification system provided by the present invention.
In fig. 1, the structure represented by each reference numeral is listed as follows:
1-grid tank, 2-adjusting tank, 3-improved AOO process tank, 4-high-efficiency micro-aeration biological tank, 5-high-efficiency dephosphorization tank, 6-high-efficiency filter tank, 7-clear water tank, 8-sludge concentration tank and 9-pressure filter tank.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
A sewage treatment and purification system comprises a grid tank 1, an adjusting tank 2, an improved AOO process tank 3, a high-efficiency micro-aeration biological tank 4, a high-efficiency dephosphorization tank 5, a high-efficiency filter tank 6 and a clean water tank 7;
wherein, the grid pond 1, the adjusting pond 2, the improved AOO process pond 3, the high-efficiency micro-aeration biological pond 4, the high-efficiency dephosphorization pond 5, the high-efficiency filter pond 6 and the clean water pond 7 are sequentially connected through pipelines;
the bottom end of the high-efficiency dephosphorization tank 5 is connected with the improved AOO process 3 tank through a pipeline;
the bottom end of the high-efficiency filter 6 is connected with the improved AOO process tank 3 through a pipeline.
In one embodiment, a deodorizing means is provided in the conditioning tank 2; an aeration device, a dosing device and a deodorization device are arranged in the improved AOO process tank 3; an aeration device is arranged in the high-efficiency micro-aeration biological tank 4.
In one embodiment, a lift pump is arranged in the grating tank 1, and sewage enters the regulating tank through the lift pump.
In one embodiment, the modified AOO process tank 3 includes an anaerobic tank, an anoxic tank, and an aerobic tank; the anaerobic tank, the anoxic tank and the aerobic tank are sequentially connected through pipelines; the anaerobic tank is connected with the adjusting tank 2, and the aerobic tank is connected with the high-efficiency micro-aeration biological tank 4.
In another embodiment, the anaerobic pool comprises clostridium butyricum and/or yeast;
the anoxic pond contains denitrifying phosphorus accumulating bacteria;
the aerobic pool comprises at least one of nitrobacteria, bacillus subtilis and photosynthetic bacteria.
In another embodiment, the anaerobic tank, the anoxic tank and the aerobic tank are all connected with the aeration device; the anaerobic tank, the anoxic tank and the aerobic tank are all connected with a dosing device, and the anaerobic tank, the anoxic tank and the aerobic tank are all connected with a deodorizing device.
In one embodiment, the efficient phosphorus removal tank 5 comprises at least one phosphorus accumulating bacterium.
In one embodiment, the system also comprises a sludge concentration tank 8 and a filter pressing tank 9; wherein the sludge concentration tank 8 is connected with the efficient dephosphorization tank 5 through a pipeline, the top end of the sludge concentration tank 8 is connected with the regulating tank 2 through a pipeline, and the bottom end of the sludge concentration tank 8 is connected with the filter pressing tank 9;
the top end of the pressure filter 9 is connected with the adjusting tank 2.
In another embodiment, the sludge thickener 8 is further provided with a deodorizing means.
A sewage treatment and purification method comprises the following steps:
(1) introducing sewage into a grid pond, lifting the sewage into a regulating pond by using a grid pond lifting pump, regulating the water quality and the water quantity in the regulating pond, and then, introducing the sewage into an improved AOO process pond;
(2) the sewage improvement AAO process tank enters the high-efficiency micro-aeration biological tank after being sequentially treated by anaerobic microorganisms, anoxic microorganisms and aerobic microorganisms;
(3) aerating the sewage in the high-efficiency micro-aeration biological tank to further reduce the content of pollutants in the sewage;
(4) the high-efficiency micro-aeration biological tank discharges water, sewage enters the high-efficiency phosphorus removal tank, and the sewage after biological treatment in the high-efficiency phosphorus removal tank enters the high-efficiency micro-filter tank;
(5) and in the sludge separated by the high-efficiency dephosphorization tank, 10-20% of the sludge in mass fraction flows back to an anaerobic tank of the improved AAO process tank for denitrification treatment, and the rest is discharged into a sludge concentration tank for concentration.
(6) Carrying out pressure filtration on the sewage in a high-efficiency micro-filter by a filter to remove suspended matters, and then carrying out solid-liquid separation to obtain clear water and sludge;
(7) and (4) conveying the clear water obtained in the step (6) to a clear water tank for direct discharge, treating the sludge in a sludge concentration tank, concentrating the sludge in the sludge concentration tank, refluxing the supernatant to an adjusting tank, allowing the concentrated sludge to enter a filter pressing tank, performing pressure filtration in the filter pressing tank to obtain filtrate and mud cakes, refluxing the obtained filtrate to the adjusting tank, and taking out the mud cakes for outward transportation and stacking.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A sewage treatment and purification system is characterized by comprising a grating tank, an adjusting tank, an improved AOO process tank, a high-efficiency micro-aeration biological tank, a high-efficiency dephosphorization tank, a high-efficiency filter tank and a clean water tank;
wherein the grid pond, the adjusting pond, the improved AOO process pond, the high-efficiency micro-aeration biological pond, the high-efficiency dephosphorization pond, the high-efficiency filter pond and the clean water pond are sequentially connected through pipelines;
the bottom end of the high-efficiency dephosphorization tank is connected with the improved AOO process tank through a pipeline;
the bottom end of the high-efficiency filter tank is connected with the improved AOO process tank through a pipeline.
2. The sewage treatment and purification system of claim 1, wherein a deodorizing device is disposed in the regulating reservoir;
an aeration device, a dosing device and a deodorization device are arranged in the improved AOO process tank;
an aeration device is arranged in the high-efficiency micro-aeration biological tank.
3. The sewage treatment and purification system as claimed in claim 1, wherein a lift pump is disposed in the grid tank, and the sewage enters the regulating tank through the lift pump.
4. The sewage treatment purification system of claim 1, wherein the improved AOO process tank comprises an anaerobic tank, an anoxic tank and an aerobic tank in sequence; the anaerobic tank, the anoxic tank and the aerobic tank are sequentially connected through pipelines; the anaerobic tank is connected with the regulating tank, and the aerobic tank is connected with the high-efficiency micro-aeration biological tank.
5. The wastewater treatment purification system of claim 4, wherein the anaerobic tank comprises Clostridium butyricum and/or yeast;
the anoxic pond contains denitrifying phosphorus accumulating bacteria;
the aerobic pool comprises at least one of nitrobacteria, bacillus subtilis and photosynthetic bacteria.
6. The sewage treatment and purification system of claim 4, wherein the anaerobic tank, the anoxic tank and the aerobic tank are connected to the aeration device; the anaerobic tank, the anoxic tank and the aerobic tank are all connected with the dosing device, and the anaerobic tank, the anoxic tank and the aerobic tank are all connected with the deodorizing device.
7. The sewage treatment and purification system of claim 1, wherein the high efficiency micro-aeration biological tank
The high-efficiency phosphorus removal pool contains at least one phosphorus-accumulating bacterium.
8. The sewage treatment purification system of claim 1, further comprising a sludge concentration tank and a filter pressing tank; the sludge concentration tank is connected with the efficient dephosphorization tank through a pipeline, the top end of the sludge concentration tank is connected with the adjusting tank through a pipeline, and the bottom end of the sludge concentration tank is connected with the filter pressing tank;
the top end of the pressure filter tank is connected with the adjusting tank.
9. The sewage treatment and purification system of claim 8, wherein the sludge concentration tank is further provided with a deodorizing device.
10. A method for treating and purifying sewage, which is characterized in that the system of any one of claims 1-9 is adopted for treatment and purification;
the method specifically comprises the following steps:
(1) introducing sewage into a grid pool, lifting the sewage into an adjusting pool by using a grid pool lifting pump, adjusting the water quality and the water quantity in the adjusting pool, and then, introducing the sewage into an improved AOO process pool;
(2) the sewage improvement AAO process tank enters the high-efficiency micro-aeration biological tank after being sequentially treated by anaerobic microorganisms, anoxic microorganisms and aerobic microorganisms;
(3) aerating the sewage in the high-efficiency micro-aeration biological tank to further reduce the content of pollutants in the sewage;
(4) the high-efficiency micro-aeration biological tank discharges water, sewage enters the high-efficiency phosphorus removal tank, and the sewage after biological treatment in the high-efficiency phosphorus removal tank enters the high-efficiency micro-filter tank;
(5) in the sludge separated by the high-efficiency dephosphorization tank, 10-20% of the sludge with mass fraction flows back to an anaerobic tank of the improved AAO process tank for denitrification treatment, and the rest is discharged into a sludge concentration tank for concentration;
(6) filtering sewage in a high-efficiency micro-filter by a filter to remove suspended matters, and then carrying out solid-liquid separation to obtain clear water and sludge;
(7) and (5) conveying the clean water obtained in the step (6) to a clean water tank for direct discharge, treating the sludge in a sludge concentration tank, concentrating the sludge in the sludge concentration tank, refluxing the supernatant to an adjusting tank, allowing the concentrated sludge to enter a filter pressing tank, performing filter pressing in the filter pressing tank to obtain filtrate and mud cakes, refluxing the obtained filtrate to the adjusting tank, and taking out the mud cakes for outward transportation and stacking.
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| CN104163543A (en) * | 2014-07-28 | 2014-11-26 | 漳州职业技术学院 | Sewage treatment device and sewage treatment method |
| CN113307456A (en) * | 2021-06-23 | 2021-08-27 | 广东新泰隆环保集团有限公司 | Improved sewage treatment method and device for MBBR (moving bed biofilm reactor) process |
| CN113929267A (en) * | 2021-11-03 | 2022-01-14 | 广东新泰隆环保集团有限公司 | Efficient microbial microfiltration clarified sewage treatment device and treatment method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163543A (en) * | 2014-07-28 | 2014-11-26 | 漳州职业技术学院 | Sewage treatment device and sewage treatment method |
| CN113307456A (en) * | 2021-06-23 | 2021-08-27 | 广东新泰隆环保集团有限公司 | Improved sewage treatment method and device for MBBR (moving bed biofilm reactor) process |
| CN113929267A (en) * | 2021-11-03 | 2022-01-14 | 广东新泰隆环保集团有限公司 | Efficient microbial microfiltration clarified sewage treatment device and treatment method thereof |
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Application publication date: 20220809 |