CN114162961B - Unpowered biological rotating cage, sewage treatment system and sewage treatment method - Google Patents
Unpowered biological rotating cage, sewage treatment system and sewage treatment method Download PDFInfo
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- CN114162961B CN114162961B CN202111153336.8A CN202111153336A CN114162961B CN 114162961 B CN114162961 B CN 114162961B CN 202111153336 A CN202111153336 A CN 202111153336A CN 114162961 B CN114162961 B CN 114162961B
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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
- C02F3/08—Aerobic processes using moving contact bodies
- C02F3/082—Rotating biological contactors
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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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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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 an unpowered biological rotating cage, a sewage treatment system and a sewage treatment method, wherein the biological rotating cage comprises a supporting seat and a vertically arranged rotating disc, the rotating disc is rotatably arranged on the supporting seat, the unpowered biological rotating cage further comprises an annular biological reaction bed, the biological reaction bed is composed of a concentric inner ring shell, an outer ring shell and annular sealing plates for sealing two sides of the inner ring shell and the outer ring shell, a plurality of partition plates are arranged in an annular cavity, all the partition plates are uniformly distributed along the circumference of the biological reaction bed to divide the annular cavity into a plurality of reaction cavities, a first biological filler is filled in each reaction cavity, water collecting plates are obliquely arranged on the outer ring shell corresponding to each reaction cavity, the inclination directions of all the water collecting plates are the same when the water collecting plates rotate to the same position, and a plurality of water passing holes are formed in four side walls of the reaction cavity corresponding to the inclination directions of each water collecting plate. The invention has no energy consumption and convenient maintenance, and is beneficial to improving the aeration efficiency and the hydraulic retention time, thereby being beneficial to improving the sewage treatment efficiency.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to an unpowered biological rotating cage, a sewage treatment system and a sewage treatment method.
Background
With the improvement of rural town and peasant living standard, the rural domestic sewage treatment problem is increasingly outstanding.
In recent years, great attention has been paid to how to develop a treatment apparatus suitable for local domestic sewage in combination with the topography conditions of mountain villages and towns. However, the developed treatment device still has the defects of high energy consumption, high maintenance strength, complex device structure and the like. Aiming at the technical problems, researchers combine the characteristics of the topography of mountainous villages and towns, and research and development of potential energy driving sewage treatment devices based on the elevation difference topography has important engineering significance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an unpowered biological rotating cage, a sewage treatment system and a sewage treatment method, which have the advantages of no energy consumption, convenient maintenance and contribution to improving the aeration efficiency and the hydraulic retention time, thereby being beneficial to improving the sewage treatment efficiency.
The technical scheme of the invention is realized as follows:
the utility model provides an unpowered biological rotating cage, includes supporting seat and the carousel of vertical setting, the carousel rotatable setting is on the supporting seat, still includes annular biological reaction bed, biological reaction bed comprises concentric inner ring casing and outer ring casing and the annular shrouding that is used for sealing inner ring casing and outer ring casing both sides to form annular cavity in biological reaction bed, inner ring casing is fixed with carousel outer circumference, thereby with the fixed setting of biological reaction bed on the carousel outer circumference, be equipped with a plurality of baffles in annular cavity, all baffles are in order to divide into a plurality of reaction chambers with annular cavity along biological reaction bed circumference evenly distributed, and every reaction intracavity is filled with first biological filler, and the slope is equipped with the water collecting plate on the outer ring casing that every reaction chamber corresponds for collect the water, and the incline direction when all water collecting plates rotate the coplanar is the same, all is equipped with a plurality of water holes on the reaction chamber four lateral walls that every water collecting plate incline direction corresponds, is convenient for the water passes in and out the reaction chamber that corresponds from the water hole.
Further, the filling rate of the first biological filler in each reaction cavity is 20-30%.
Further, the diameter ratio of the inner ring shell to the outer ring shell of the biological reaction bed is 1: 1.2-1.5; the area of each reaction cavity provided with the water passing holes accounts for 1/3-1/2 of the total area of the corresponding reaction cavity.
Further, the turntable is rotatably arranged on the supporting seat through the rotating shafts, two turntables are concentrically arranged at intervals, mounting holes penetrating through two side faces of the turntable are formed in the center of the turntable, one end of the rotating shaft sequentially penetrates through the mounting holes of the two turntables, and two ends of the rotating shaft are fixedly supported on the supporting seat.
The sewage treatment system sequentially comprises an anaerobic regulating tank, the biological rotating cage and the constructed wetland along the water flow direction, wherein the biological rotating cage is positioned in a water collecting tank, the anaerobic regulating tank is positioned above the biological rotating cage and has a certain height, and a water outlet of the anaerobic regulating tank is positioned on the side surface of a turntable, so that water in the anaerobic regulating tank can conveniently flow into a corresponding reaction cavity through a water collecting plate after falling down; the water outlet of the water collecting tank is positioned above the artificial wetland, so that water in the water collecting tank can flow into the artificial wetland by gravity.
Further, the three artificial wetlands are a first-stage artificial wetland, a second-stage artificial wetland and a third-stage artificial wetland respectively, wherein the first-stage artificial wetland is positioned below a water outlet of the water collecting tank, the second-stage artificial wetland is positioned below a water outlet of the first-stage artificial wetland, and the third-stage artificial wetland is positioned below a water outlet of the second-stage artificial wetland, so that water can conveniently flow into the next-stage artificial wetland from the previous-stage artificial wetland by means of gravity.
Further, arundo donax is planted in the first-stage artificial wetland, calamus is planted in the second-stage artificial wetland, and canna is planted in the third-stage artificial wetland.
Further, the anaerobic regulating tank is internally filled with a second biological filler, a water outlet of the anaerobic regulating tank is arranged at the bottom of the side surface of the anaerobic regulating tank, a cover plate is arranged at the top of the anaerobic regulating tank to seal the anaerobic regulating tank, and a water inlet and an exhaust hole are formed in the cover plate.
Further, a plurality of baffle plates are arranged in the height direction of the anaerobic regulating tank, all baffle plates are horizontally and alternately arranged, water flow channels are formed between two adjacent baffle plates, one end of each baffle plate is fixed with one side wall of the anaerobic regulating tank, the other end of each baffle plate is provided with a certain gap with the opposite side wall of the anaerobic regulating tank Chi Lingyi, and the two adjacent baffle plates are alternately arranged so that all water flow channels are communicated and integrally form a serpentine water flow channel, so that the residence time of water in the anaerobic regulating tank is conveniently increased.
The sewage treatment method utilizes the sewage treatment system to treat sewage, after the sewage enters an anaerobic regulating tank for pretreatment, the sewage falls on a water collecting plate on the side surface of a turntable along a parabolic track from the anaerobic regulating tank and flows into a corresponding reaction cavity, and drop aeration is realized in the falling process; under the continuous impact of sewage, the turntable continuously rotates, the biological bed rotates along with the turntable, the sewage is fully contacted with the first biological filler in the reaction cavity in the rotation process of the biological bed, then the sewage flows down from the biological bed, and then the sewage enters the constructed wetland for further treatment, so that the sewage is efficiently treated.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can utilize the topography of mountain villages and towns, the sewage has certain potential energy while realizing aeration, and the sewage treatment system can smoothly run by utilizing the potential energy, thereby treating the sewage without energy consumption; and the whole sewage treatment system has simple structure and convenient operation and maintenance.
2. The anaerobic regulating tank can play a role in regulating water quality and water quantity, so that the defect of large change of rural domestic sewage water quality and water quantity is overcome, the impact load of a subsequent treatment structure is effectively relieved, the stable operation of a system is ensured, the anaerobic regulating tank can also realize the effect of pretreatment, the organic load of the subsequent treatment structure is reduced, and the treatment effect is improved; the biological rotating cage can further treat the effluent of the anaerobic regulating tank, can supplement dissolved oxygen in the processes of drop aeration and rotation of the biological rotating cage, increases the dissolved oxygen content of the system, provides sufficient dissolved oxygen content for the subsequent multistage constructed wetland, and improves the treatment efficiency. The constructed wetland can carry out advanced treatment on water quality, so that the effluent reaches the recycling standard, and the recycling of water resources is realized.
3. The water collecting plate is arranged outside the biological rotating cage, the water collecting plate is beneficial to increasing the impact force of the sewage to the rotating disc when collecting the sewage falling from a high place, so that the continuous rotation of the rotating disc is effectively ensured.
4. Each reaction cavity of the biological rotating cage is composed of a water storage area and a water passing area formed by water passing holes, so that when the biological rotating cage is used for treating sewage, most of sewage in the reaction cavity in a falling stage stays in the water storage area to be in contact reaction with the first biological filler, only a small amount of sewage falls off, part of sewage in the falling sewage flows into the reaction cavity below the reaction cavity along the outer side of the reaction cavity wall, the effective treatment is further obtained, and the falling sewage realizes aeration; the sewage still falls into the reaction chamber below the reaction chamber in the rising stage, and the falling water falls and is continuously aerated, so that the content of dissolved oxygen in the water can be greatly improved, and the occurrence of aerobic biochemical reaction is promoted.
Drawings
FIG. 1-schematic structural view of the biological rotating cage of the present invention.
FIG. 2-schematic diagram of a sewage treatment system according to the present invention.
Wherein: 1-an anaerobic regulating tank; 11-exhaust holes; 12-water inlet; 13-an anaerobic regulating tank water outlet; 14-baffle plate; 2-biological rotating cages; 21-a separator; 22-reaction chamber; 23-a water collection sheet; 24-supporting seats; 25-rotating shaft; 26-supporting rods; 27-a water collection tank; 3-artificial wetland; 31-first stage artificial wetland; 32-a second stage constructed wetland; 33-third stage constructed wetland.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
Referring to fig. 1, an unpowered biological rotating cage 2 comprises a supporting seat 24 and a vertically arranged rotating disc, the rotating disc is rotatably arranged on the supporting seat 24, and further comprises an annular biological reaction bed, the biological reaction bed is composed of a concentric inner ring shell, an outer ring shell and annular sealing plates used for sealing two sides of the inner ring shell and the outer ring shell, so that an annular cavity is formed in the biological reaction bed, the inner ring shell is fixed with the outer circumference of the rotating disc, the biological reaction bed is fixedly arranged on the outer circumference of the rotating disc, a plurality of partition plates 21 are arranged in the annular cavity, all the partition plates 21 are uniformly distributed along the circumference of the biological reaction bed to divide the annular cavity into a plurality of reaction cavities 22, water collecting plates 23 are obliquely arranged on the outer ring shell corresponding to each reaction cavity 22 and used for collecting water bodies, a plurality of water passing holes are formed in the four side walls of the reaction cavities corresponding to the oblique directions of each water collecting plates 23 when the water collecting plates rotate to the same position, and the water bodies are convenient to pass in and out of the corresponding reaction cavities 22 from the water passing holes.
Here, the inner ring shell, the outer ring shell and the corresponding annular sealing plates at the end corresponding to the inclined direction of the water collecting plate of each reaction cavity are provided with water passing holes, the water passing holes are equivalent to water passing areas of the reaction cavities, and other areas of the reaction cavities form water storage areas of the reaction cavities.
When the biological rotating cage is used, the water drop port is arranged above the top of the biological rotating cage obliquely, and is positioned at a certain height from the top of the turntable, so that sewage is introduced into the biological rotating cage, and the height is generally greater than or equal to 0.5 and m. By utilizing the relief height difference of the mountain village and town areas, sewage falls from a high place after being pretreated by an anaerobic regulating tank and the like, and impacts a water collecting plate on a biological rotating cage, and under the action of impact force and the action of gravity difference of sewage in a downward rotating reaction cavity water storage area and an upward rotating reaction cavity water storage area, the rotating disc continuously rotates, so that a biological bed is driven to rotate.
Meanwhile, the water collecting plate can collect the sewage falling from a high place and increase the impact force of the sewage on the turntable, thereby effectively ensuringThe continuous rotation of the turntable is realized, in addition, the water collecting plate also plays a role in buffering sewage, so that the sewage is prevented from impacting the first biological filler at a high speed, and the impact on the biological film attached and grown on the surface of the first biological filler is reduced. After sewage enters the reaction cavity from the water passing hole, the residence time of the sewage in the reaction cavity is increased due to the existence of the water storage area, so that the sewage treatment effect is improved. Meanwhile, under the action of the biological membrane, the sewage in the reaction cavity removes most BOD in the water 5 Degrading organic matters in the sewage, and oxidizing ammonia nitrogen into nitrate nitrogen. The biomembrane has an external aerobic and internal anoxic environment, and also creates a good condition for denitrification.
In addition, most of sewage in the reaction cavity in the falling stage stays in the water storage area to contact and react with the first biological filler, only a small amount of sewage falls, and part of sewage in the falling sewage flows into the reaction cavity below the reaction cavity along the outer side of the reaction cavity wall, so that the effective treatment is further realized, and the falling sewage realizes aeration; the sewage still falls into the reaction chamber below the reaction chamber in the rising stage, so that the falling water falls continuously, aeration is carried out continuously, the content of dissolved oxygen in the water can be greatly improved, the occurrence of aerobic biochemical reaction is promoted, and the aerobic reaction is the main biochemical process for removing pollutants in the water, thereby improving the sewage treatment efficiency.
In specific implementation, the filling rate of the first biological filler in each reaction cavity 22 is 20-30%.
In specific implementation, the diameter ratio of the inner ring shell to the outer ring shell of the biological reaction bed is 1: 1.2-1.5; the area of each reaction cavity 22 provided with water passing holes accounts for 1/3-1/2 of the total area of the corresponding reaction cavity 22, namely 1/3-1/2 of the reaction cavity of the water passing area station.
In specific implementation, the turntables are rotatably arranged on the supporting seat 24 through the rotating shafts 25, two turntables are concentrically arranged at intervals, mounting holes penetrating through two side surfaces of the turntables are formed in the centers of the turntables, one end of each rotating shaft 25 sequentially penetrates through the mounting holes of the two turntables, and two ends of each rotating shaft 25 are fixedly supported on the supporting seat 24.
In this embodiment, the turntable is composed of a ring and a plurality of support rods 26, the ring is sleeved on the rotating shaft, the support rods are uniformly distributed between the ring and the biological bed, and two ends of the support rods are respectively fixed with the ring and the biological bed. Thus being beneficial to reducing the dead weight of the biological rotating cage and ensuring the stable operation of the biological rotating cage
The sewage treatment system sequentially comprises an anaerobic regulating tank 1, the biological rotating cage 2 and the constructed wetland 3 along the water flow direction, wherein the biological rotating cage 2 is positioned in a water collecting tank 27, the anaerobic regulating tank 1 is positioned above the biological rotating cage 2 and has a certain height, and a water outlet 13 of the anaerobic regulating tank is positioned on the side surface of a turntable, so that water in the anaerobic regulating tank 1 conveniently falls down and flows into a corresponding reaction cavity 22 through a water collecting plate 23; the water outlet of the water collecting tank 27 is positioned above the artificial wetland 3, so that the water in the water collecting tank 27 can flow into the artificial wetland 3 by gravity.
The anaerobic regulating tank can be cylindrical or cuboid, and can play a role in regulating water quality and water quantity, so that the defect of large change of rural domestic sewage water quality and water quantity is overcome, the impact load of subsequent treatment structures is effectively relieved, the stable operation of the system is ensured, the anaerobic regulating tank can also realize the effect of pretreatment, the organic load of the subsequent treatment structures is reduced, and the treatment effect is improved. The biological rotating cage can further treat the effluent of the anaerobic regulating tank, can supplement dissolved oxygen in the processes of drop aeration and rotation of the rotary table, increases the dissolved oxygen content of the system, provides sufficient dissolved oxygen content for the subsequent multistage constructed wetland, and improves the treatment efficiency. The constructed wetland can carry out advanced treatment on water quality, so that the effluent reaches the recycling standard, and the recycling of water resources is realized.
In practical application, the water outlets of the water collecting tank are arranged in the height direction, so that the corresponding water outlets of the water collecting tank can be opened according to the water quantity, and the normal operation of the biological rotating cage is ensured.
In specific implementation, the three constructed wetlands 3 are a first-stage constructed wetland 31, a second-stage constructed wetland 32 and a third-stage constructed wetland 33, wherein the first-stage constructed wetland 31 is positioned below the water outlet of the water collecting tank 27, the second-stage constructed wetland 32 is positioned below the water outlet of the first-stage constructed wetland 31, and the third-stage constructed wetland 33 is positioned below the water outlet of the second-stage constructed wetland 32, so that water can conveniently flow into the next-stage constructed wetland from the previous-stage constructed wetland by means of gravity.
In practical application, the occupied areas of the first-stage constructed wetland, the second-stage constructed wetland and the third-stage constructed wetland can be set according to the needs, so that a better treatment effect is obtained.
In specific implementation, arundo donax is planted in the first-stage artificial wetland 31, calamus is planted in the second-stage artificial wetland 32, and canna is planted in the third-stage artificial wetland 33.
In this embodiment, the three artificial wetlands are all provided with fillers for planting corresponding plants, wherein the fillers are mixtures of pebbles, waste bricks, broken stones and gravels.
In specific implementation, the anaerobic regulating tank is filled with a second biological filler, the water outlet 13 of the anaerobic regulating tank is arranged at the bottom of the side surface of the anaerobic regulating tank 1, the top of the anaerobic regulating tank 1 is provided with a cover plate for sealing the anaerobic regulating tank, and the cover plate is provided with a water inlet 12 and an exhaust hole 11.
In specific implementation, a plurality of baffle plates 14 are arranged in the height direction of the anaerobic regulating tank 1, all baffle plates 14 are horizontally and alternately arranged, water flow channels are formed between two adjacent baffle plates 14, one end of each baffle plate 14 is fixed with one side wall of the anaerobic regulating tank 1, the other end of each baffle plate 14 is provided with a certain gap with the other side wall of the opposite anaerobic regulating tank 1, water flow passes through conveniently, and the two adjacent baffle plates 14 are alternately arranged so that all water flow channels are communicated and integrally form a serpentine water flow channel, and the residence time of water in the anaerobic regulating tank 1 is conveniently increased.
The sewage treatment method utilizes the sewage treatment system to treat sewage, after the sewage enters an anaerobic regulating tank for pretreatment, the sewage falls on a water collecting plate on the side surface of a turntable along a parabolic track from the anaerobic regulating tank and flows into a corresponding reaction cavity, and drop aeration is realized in the falling process; under the continuous impact of sewage, the turntable continuously rotates, the biological bed rotates along with the turntable, the sewage is fully contacted with the first biological filler in the reaction cavity in the rotation process of the biological bed, then the sewage flows down from the biological bed, and then the sewage enters the constructed wetland for further treatment, so that the sewage is efficiently treated.
Finally, it should be noted that the above-mentioned examples of the present invention are only illustrative of the present invention and are not limiting of the embodiments of the present invention. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. Not all embodiments are exhaustive. Obvious changes and modifications which are extended by the technical proposal of the invention are still within the protection scope of the invention.
Claims (10)
1. The unpowered biological rotating cage comprises a supporting seat and a vertically arranged rotating disc, and is characterized by further comprising an annular biological reaction bed, wherein the biological reaction bed is composed of a concentric inner ring shell, an outer ring shell and annular sealing plates for sealing two sides of the inner ring shell and the outer ring shell, so that an annular cavity is formed in the biological reaction bed, the inner ring shell is fixed with the outer circumference of the rotating disc, the biological reaction bed is fixedly arranged on the outer circumference of the rotating disc, a plurality of partition plates are arranged in the annular cavity, all the partition plates are uniformly distributed along the circumference of the biological reaction bed to divide the annular cavity into a plurality of reaction cavities, each reaction cavity is filled with a first biological filler, a water collecting plate is obliquely arranged on the outer ring shell corresponding to each reaction cavity and used for collecting water bodies, the inclination directions of all the water collecting plates are the same when rotating to the same position, and a plurality of water through holes are formed in four side walls of the reaction cavities corresponding to the inclination directions of each water collecting plate, so that the water bodies can conveniently pass in and out of the corresponding reaction cavities from the water through holes; the inner ring shell, the outer ring shell and the corresponding annular sealing plates at the end corresponding to the inclined direction of the water collecting plate of each reaction cavity are provided with water holes.
2. The unpowered biological rotating cage according to claim 1, wherein the filling rate of the first biological filler in each reaction cavity is 20-30%.
3. The unpowered biological rotating cage of claim 1, wherein the diameter ratio of the inner ring shell to the outer ring shell of the biological reaction bed is 1: 1.2-1.5; the area of each reaction cavity provided with the water passing holes accounts for 1/3-1/2 of the total area of the corresponding reaction cavity.
4. The unpowered biological rotating cage according to claim 1, wherein the rotating discs are rotatably arranged on the supporting seat through rotating shafts, the rotating discs are arranged in two concentric intervals, mounting holes penetrating through two side faces of the rotating discs are formed in the centers of the rotating discs, one end of each rotating shaft sequentially penetrates through the mounting holes of the two rotating discs, and two ends of each rotating shaft are fixedly supported on the supporting seat.
5. The sewage treatment system is characterized by sequentially comprising an anaerobic regulating tank, the biological rotating cage and the constructed wetland along the water flow direction, wherein the biological rotating cage is positioned in a water collecting tank, the anaerobic regulating tank is positioned above the biological rotating cage and has a certain height, and a water outlet of the anaerobic regulating tank is positioned on the side surface of a turntable, so that water in the anaerobic regulating tank can conveniently flow into a corresponding reaction cavity through a water collecting plate after falling down; the water outlet of the water collecting tank is positioned above the artificial wetland, so that water in the water collecting tank can flow into the artificial wetland by gravity.
6. The sewage treatment system according to claim 5, wherein the three artificial wetlands are respectively a first-stage artificial wetland, a second-stage artificial wetland and a third-stage artificial wetland, the first-stage artificial wetland is positioned below the water outlet of the water collecting tank, the second-stage artificial wetland is positioned below the water outlet of the first-stage artificial wetland, and the third-stage artificial wetland is positioned below the water outlet of the second-stage artificial wetland, so that water can flow from the upper-stage artificial wetland into the lower-stage artificial wetland by means of gravity.
7. The wastewater treatment system of claim 6, wherein the first stage constructed wetland is populated with arundo donax, the second stage constructed wetland is populated with calamus, and the third stage constructed wetland is populated with canna.
8. The sewage treatment system of claim 5, wherein the anaerobic regulating tank is filled with a second biological filler, the water outlet of the anaerobic regulating tank is arranged at the bottom of the side surface of the anaerobic regulating tank, the top of the anaerobic regulating tank is provided with a cover plate for sealing the anaerobic regulating tank, and the cover plate is provided with a water inlet and an exhaust hole.
9. The wastewater treatment system of claim 8, wherein a plurality of baffles are arranged in the height direction of the anaerobic regulating tank, all baffles are horizontally and alternately arranged, water flow channels are formed between two adjacent baffles, one end of each baffle is fixed with one side wall of the anaerobic regulating tank, the other end of each baffle is provided with a certain gap with the opposite side wall of the anaerobic regulating tank Chi Lingyi, and the two adjacent baffles are alternately arranged so that all water flow channels are communicated and integrally form a serpentine water flow channel, so that the residence time of water in the anaerobic regulating tank is increased.
10. A sewage treatment method is characterized in that the sewage treatment system in claim 5 is utilized to treat sewage, after the sewage enters an anaerobic regulating tank for pretreatment, the sewage falls on a water collecting plate on the side surface of a turntable along a parabolic track from the anaerobic regulating tank and flows into a corresponding reaction cavity, and drop aeration is realized in the falling process; under the continuous impact of sewage, the turntable continuously rotates, the biological bed rotates along with the turntable, the sewage is fully contacted with the first biological filler in the reaction cavity in the rotation process of the biological bed, then the sewage flows down from the biological bed, and then the sewage enters the constructed wetland for further treatment, so that the sewage is efficiently treated.
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