CN217921635U - Rural sewage treatment device of pulse aeration constructed wetland filter tank - Google Patents
Rural sewage treatment device of pulse aeration constructed wetland filter tank Download PDFInfo
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- CN217921635U CN217921635U CN202220830211.8U CN202220830211U CN217921635U CN 217921635 U CN217921635 U CN 217921635U CN 202220830211 U CN202220830211 U CN 202220830211U CN 217921635 U CN217921635 U CN 217921635U
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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 utility model discloses a rural sewage device is handled in pulse aeration constructed wetland filtering pond relates to sewage purification treatment technical field, include: each pulse aeration wetland filter tank comprises two constructed wetland filter tanks, a water outlet pipeline of one pulse aeration wetland filter tank is communicated with a water inlet pipeline of the adjacent pulse aeration wetland filter tank, and a vegetable layer, a sand layer and a gravel layer are sequentially arranged in each constructed wetland filter tank from top to bottom; the pulse aeration main pipe sequentially penetrates through the side walls of the artificial wetland filter tank; the air inlet end of the pulse aeration branch pipe is communicated with the pulse aeration main pipe, and the air outlet end of the pulse aeration branch pipe is communicated with the inside of the constructed wetland filter tank; the electromagnetic pulse valve is fixed on the pulse aeration main pipe; and the pulse aeration controller is electrically connected with the electromagnetic pulse valve. The utility model utilizes the pulse aeration mode to maintain the balance of the oxygen content in the constructed wetland filter tank.
Description
Technical Field
The utility model relates to a sewage purification treatment technical field especially relates to a rural sewage device is handled in pulse aeration constructed wetland filtering pond.
Background
Along with the rapid development of rural areas in China to urbanization, the discharge amount of rural domestic sewage is increased day by day, but the collection of rural domestic sewage and the capital investment of sewage treatment facilities are not kept pace with the urbanization construction, and in addition, the rural areas have complex terrain and dispersed layout, so that the difficulty of rural sewage collection and treatment is greatly increased; and the environmental protection consciousness of residents in rural areas is weak, the support in the aspects of capital and professional technology is lacked, and finally, domestic sewage with high COD and high N content is directly discharged into nearby rivers and lakes, so that the water quality deterioration and the groundwater pollution are caused.
For the dispersed rural sewage treatment in foreign countries, the technologies such as a land sewage treatment process, a purification tank, a membrane bioreactor and the like are mainly used. In China, aiming at the distributed rural sewage treatment, the technology of artificial wetland, biological contact oxidation, tower type biofilter, sewage purification methane tank, anaerobic biofilter and the like is mainly adopted. The constructed wetland has the advantages of simple process, low energy consumption, convenience for decentralized construction and management and the like, and is more suitable for the current situation of sewage treatment in vast rural areas in China. However, the oxygen content of the existing artificial wetland is insufficient or too sufficient, so that the oxygen consumption reaction and the anaerobic reaction of the artificial wetland can not reach a balanced state, thereby causing the problems of long sewage retention time, easy blockage of the wetland, low internal dissolved oxygen, easy formation of a dead water area, large occupied area, poor dephosphorization and denitrification effects and the like.
Therefore, a new rural sewage treatment device is urgently needed in the market to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rural sewage treatment plant of pulse aeration constructed wetland filtering pond for solve the technical problem that exists among the above-mentioned prior art, utilize pulse aeration's mode, carry out intermittent type formula oxygen suppliment for constructed wetland filtering pond, thereby make it form a state that oxygen content is balanced.
In order to achieve the above object, the utility model provides a following scheme:
the utility model discloses a rural sewage treatment plant in pulse aeration constructed wetland filtering pond, include:
the pulse aeration wetland filter tanks are a plurality of, the pulse aeration wetland filter tanks are connected end to end in sequence, each pulse aeration filter tank comprises two artificial wetland filter tanks, one artificial wetland filter tank is provided with a water inlet pipeline, the other artificial wetland filter tank is provided with a water outlet pipeline, the water outlet pipeline of one pulse aeration wetland filter tank is communicated with the water inlet pipeline of the adjacent pulse aeration wetland filter tank, two artificial wetland filter tanks in each pulse aeration wetland filter tank are communicated, and each artificial wetland filter tank is internally provided with a vegetable layer, a sand layer and a gravel layer from top to bottom in sequence;
the pulse aeration main pipes sequentially penetrate through the side walls of the artificial wetland filter tanks, and air inlets of the pulse aeration main pipes are connected with an air source;
the inlet end of the pulse aeration branch pipe is communicated with the pulse aeration main pipe, the outlet end of the pulse aeration branch pipe is communicated with the interior of the constructed wetland filter tank, and a plurality of pulse aeration branch pipes are arranged in each constructed wetland filter tank;
the electromagnetic pulse valve is fixed on the pulse aeration main pipe;
and the pulse aeration controller is electrically connected with the electromagnetic pulse valve.
Preferably, the vegetation layer comprises one or more of poly grass, redroot gromwell, calamus, and bulrush.
Preferably, the thickness of the sand layer is 15cm.
Preferably, the thickness of the gravel layer is 50cm, and the particle size of the gravel in the gravel layer is 2.0-2.5cm.
Preferably, the lower extreme of gravel layer is fixed with a prefabricated perforated plate, the thickness of prefabricated perforated plate is 5cm, be equipped with a plurality of through-hole on the prefabricated perforated plate, every the aperture of through-hole is 8mm.
Preferably, a gas flowmeter is arranged on the pulse aeration main pipe, and the gas flowmeter is electrically connected with the pulse aeration controller.
Preferably, the water inlet pipeline, the pulse aeration main pipe and the pulse aeration branch pipe are all PPR pipes.
Preferably, a communicating hole is formed between two constructed wetland filter tanks in each pulse aeration wetland filter tank, a perforated water pipe is arranged in the communicating hole, and the perforated water pipe is used for communicating the two adjacent constructed wetland filter tanks.
Preferably, waste gypsum is arranged in the water inlet pipeline.
Preferably, the artificial wetland filter tank is made of reinforced concrete.
The utility model discloses for prior art gain following technological effect:
the utility model adopts the pulse aeration mode to supply oxygen for the pulse aeration wetland filter tank intermittently. Thereby achieving a state of oxygen equilibrium. So as to ensure that aerobic, anaerobic and anoxic states exist in the sewage; meanwhile, the pulse aeration mode has lower operation load, so the nitrification effect of the pulse biofilter can be ensured; in addition, the instantaneous hydraulic load is large, so that the falling of the biological membrane is facilitated, and the activity of the biological membrane is maintained, thereby providing effective guarantee for the efficient removal of COD, N and P.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a device for treating rural sewage with a pulse aeration artificial wetland filter tank according to an embodiment of the utility model;
in the figure: 1-artificial wetland filter tank; 2-a water inlet pipeline; 3-water outlet pipeline; 4-vegetable layer; 5-a sandy soil layer; 6-a gravel layer; 7-prefabricating a perforated plate; 8-a pulse exposure controller; 9-pulse aeration main pipe; 10-pulse aeration branch pipe; 11-perforated water pipes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a rural sewage treatment plant in pulse aeration constructed wetland filtering pond for solve the technical problem that exists among the above-mentioned prior art, utilize pulse aeration's mode, carry out intermittent type formula oxygen suppliment for the constructed wetland filtering pond, thereby make it form a state that oxygen content is balanced.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the following detailed description.
As shown in fig. 1, the present embodiment provides a device for treating rural sewage with a pulse aeration artificial wetland filter tank, comprising:
the pulse aeration wetland filter tanks are provided with a plurality of pulse aeration wetland filter tanks, one, two or more pulse aeration wetland filter tanks are arranged, and the pulse aeration wetland filter tanks are connected end to end in sequence so as to form a multistage filter system, each pulse aeration filter tank comprises two artificial wetland filter tanks 1, wherein a water inlet pipeline 2 is arranged on one artificial wetland filter tank 1, a water outlet pipeline 3 is arranged on the other artificial wetland filter tank 1, the water outlet pipeline 3 of one pulse aeration wetland filter tank is communicated with the water inlet pipeline 2 of the adjacent pulse aeration wetland filter tank, namely, the sewage discharged from one pulse aeration wetland filter tank is the sewage source of the next pulse aeration wetland filter tank, special attention needs to be paid to that the water inlet pipeline 2 of the pulse aeration wetland filter tank positioned at the head end is used for connecting rural sewage sources, the two artificial wetland filter tanks 1 in each pulse aeration wetland filter tank are communicated, a vegetation layer 4, a sand layer 5 and a stone layer 6 are sequentially arranged in each artificial wetland filter tank 1 from top to bottom, and the water inlet pipeline 2 and the water outlet pipeline 3 are both positioned above the vegetation layer 4, the sand layer 5 and the stone layer 6 are used for realizing the biological filtration effect of biological filtration;
the pulse aeration main pipe 9, the pulse aeration main pipe 9 sequentially passes through the side walls of the artificial wetland filter 1, the air inlet of the pulse aeration main pipe 9 is connected with an air source, and the pulse aeration main pipe 9 can be directly connected with the atmosphere or connected with an oxygen tank;
the air inlet ends of the pulse aeration branch pipes 10 are communicated with the pulse aeration main pipe 9, the air in the pulse aeration main pipe 9 can be respectively introduced into the pulse aeration branch pipes 10, the air outlet ends of the pulse aeration branch pipes 10 are communicated with the interior of the constructed wetland filter tank 1, a plurality of pulse aeration branch pipes 10 are arranged in each constructed wetland filter tank 1, one, two or more pulse aeration branch pipes 10 can be arranged in each constructed wetland filter tank 1, and a plurality of aeration through holes are formed in each pulse aeration branch pipe 10 and are used for introducing the air into the constructed wetland filter tank 1;
the electromagnetic pulse valve is fixed on the pulse aeration main pipe 9 and is used for controlling the pulse aeration main pipe 9 to carry out pulse aeration to the artificial wetland filter tank 1 through the pulse aeration branch pipes 10;
the pulse aeration controller 8 is electrically connected with the electromagnetic pulse valve, the pulse aeration controller 8 is used for controlling the on-off of the electromagnetic pulse valve, the pulse aeration controller 8 can be fixed at the air inlet end of the pulse aeration main pipe 9, and the pulse aeration controller can be fixed at other places which are convenient to control by a person skilled in the art.
During operation, rural sewage enters into the first constructed wetland filter tank 1 in the pulse aeration wetland filter tank at the head end from the water inlet pipeline 2, the sewage passes through the vegetation layer 4, the sand layer 5 and the gravel layer 6 from top to bottom in sequence, thereby achieving the effect of biological filtration and adsorption, and can effectively remove partial impurities in the sewage, when the sewage reaches the bottom of the filter tank, the pulse aeration controller 8 controls the electromagnetic pulse valve to be opened, oxygen sequentially passes through the pulse aeration main pipe 9 and the pulse aeration branch pipe 10, and is finally sprayed out from the aeration through hole to oxygenate the sewage solution. When the water level of the first artificial wetland filter tank 1 in the head-end pulse aeration wetland filter tank is fixed, water can flow to the second artificial wetland filter tank 1 in the head-end pulse aeration wetland filter tank, the water level of the second artificial wetland filter tank 1 in the head-end pulse aeration wetland filter tank gradually rises, sewage is filtered again along the sequence of the gravel layer 6, the sand layer 5 and the vegetation layer 4 until the water level is flush with the water outlet pipeline 3, the sewage in the head-end pulse aeration wetland filter tank enters the second pulse aeration wetland filter tank through the first water outlet pipeline 3 and the water inlet pipeline 2 of the second pulse aeration wetland filter tank, and the process is repeated.
During this period, the pulse aeration controller 8 controls the electromagnetic pulse valve to work, and the specific working process is as follows:
when the electromagnetic pulse valve operates for 1h, stopping aeration when the aeration DO in the sewage reaches 1-1.5mg/L, wherein the aeration stop time is 2h; the pulse aeration controller 8 controls the electromagnetic pulse valve to periodically operate according to the mode so as to ensure that the sewage can reach aerobic, anaerobic and anoxic states; under the anaerobic state, the microorganisms release phosphorus to increase the concentration of P in the sewage, and the soluble organic matters are absorbed by the microbial cells to ensure the BOD in the sewage 5 The concentration is reduced; in addition, NH 3 -N is partially removed by cell synthesis to make NH in wastewater 3 The N concentration decreases. Under the anoxic state, the denitrifying bacteria use organic matters in the sewage as carbon sources to remove a large amount of NO in the sewage 3 -N and NO 2 Reduction of-N to N 2 Released to the air, hence BOD 5 Decrease in concentration, NO 3 The N concentration is greatly reduced, while the phosphorus variation is smaller. Under the aerobic state, the organic matters are biochemically degraded by microorganisms and continuously descend; the organic nitrogen is ammoniated and then nitrated to make NH 3 The N concentration drops significantly, but NO is produced as a result of the nitration process 3 The concentration of N increases, and P also decreases at a faster rate with excessive uptake by the polyphosphate accumulating bacteria. Meanwhile, the pulse aeration mode has lower operation load, so the nitrification effect of the pulse biofilter can be ensured; in addition, the instantaneous hydraulic load is large, so that the falling of the biological membrane is facilitated, and the activity of the biological membrane is maintained, thereby providing effective guarantee for the efficient removal of COD, N and P.
In this embodiment, the vegetation layer 4 includes one or more of poly grass, resfriction flower, calamus, and bulrush. Of course, one skilled in the art can also select other aquatic plants or algae for planting. The vegetable layer 4 has a good purifying effect on pollutants, such as degradation, adsorption, absorption and the like on the pollutants, so that the effect of sewage treatment and purification is achieved.
In the present embodiment, the thickness of the sand layer 5 is 15cm, and those skilled in the art can also adjust the thickness appropriately, which is not limited. Utilize sand layer 5 can further filter the well impurity of sewage to can carry out the adsorption to some impurity in the sewage.
In this embodiment, the thickness of the gravel layer 6 is 50cm, and the particle size of the gravel in the gravel layer 6 is 2.0-2.5cm, and the specific parameters can be adjusted by those skilled in the art according to actual needs. The purpose of the gravel layer 6 is to further remove or adsorb impurities in the sewage.
In this embodiment, the lower extreme of gravel layer 6 is fixed with a prefabricated perforated plate 7, and the effect of prefabricated perforated plate 7 is used for supporting gravel layer 6, and the thickness of prefabricated perforated plate 7 is 5cm, is equipped with a plurality of through-hole on the prefabricated perforated plate 7, and the aperture of prefabricated perforated plate 7 is 45-55%, and the aperture of every through-hole is 8mm, makes things convenient for the sewage after the filtration to pass.
In this embodiment, a gas flow meter is disposed on the pulse aeration main pipe 9, the gas flow meter is electrically connected to the pulse aeration controller 8, and the oxygen filling amount can be obtained through the gas flow meter, so as to appropriately adjust the opening time of the electromagnetic pulse valve, thereby achieving the technical purpose of maintaining the oxygen content balance in the artificial wetland filter 1.
In this embodiment, the water inlet pipeline 2, the water outlet pipeline 3, the main pulse aeration pipe 9 and the branch pulse aeration pipe 10 are all PPR pipes. The PPR pipe is also called a tripropylene polypropylene pipe, a polypropylene random copolymer pipe or a PPR pipe, and is a pipe material using polypropylene random copolymer as a raw material. Has the advantages of energy and material saving, environmental protection, light weight, high strength, corrosion resistance, smooth inner wall, no scale formation, simple and convenient construction and maintenance, long service life and the like. Those skilled in the art can also use other materials for the tube member as long as the structure is strong and the price is low. In addition, an electric valve can be respectively arranged on the water inlet pipeline 2 and the water outlet pipeline 3, and the electric valves are electrically connected with the pulse aeration controller 8, so that the sewage circulation of the water inlet pipeline 2 and the water outlet pipeline 3 can be controlled.
In the embodiment, a communication hole is arranged between two artificial wetland filter tanks 1 in each pulse aeration wetland filter tank, a perforated water pipe 11 is arranged in the communication hole, and the perforated water pipe 11 is used for communicating two adjacent artificial wetland filter tanks 1, so that sewage in the artificial wetland filter tank 1 in front enters the artificial wetland filter tank 1 in back. In addition, in order to increase the water flow, a plurality of perforated water pipes 11 may be additionally arranged in each pulse aeration wetland filter, and the specific number is not limited herein.
In this embodiment, the water inlet pipe 2 is provided with waste gypsum, and the waste gypsum can be used to improve the dephosphorization effect.
In the embodiment, the artificial wetland filter tank 1 is made of reinforced concrete, and the artificial wetland filter tank is convenient to obtain for rural environments and has a firm structure, so that the artificial wetland filter tank can be widely applied to rural areas. In order to facilitate the fixation of the pulse aeration main pipe 9, the pulse aeration main pipe 9 can be poured and formed together with the pulse aeration main pipe 9 in the process of building the artificial wetland filter tank 1, so that the pulse aeration main pipe 9 is prevented from being independently fixed at the later stage, and time and labor are saved.
The embodiment also provides a method for treating rural sewage by using the pulse aeration wetland filter tank, which comprises the following steps:
A. constructing a pulse aeration wetland filter tank, constructing an artificial wetland biological treatment system by adopting a natural water inlet biofilm formation mode, and optimizing the pulse aeration system;
B. and (3) treating rural sewage, namely flowing the rural sewage into a pulse aeration wetland filter tank system to treat the rural sewage.
The practical application effect is as follows:
in the application of the sewage treatment station of the third experimental building of Sichuan university of light chemical industry, the raw sewage is designed to have inflow water quality COD of 290mg/L, BOD of 160mg/L and NH 3 -N31mg/L, TN39mg/L, TP4.1mg/L and 10h hydraulic retention time, the quality of the treated effluent is as follows: COD45mg/L, BOD8.5mg/L, NH 3 -N3.5mg/L, TN10mg/L, TP0.4mg/L. The treatment effect is good, and the effluent quality reaches the first grade A standard of the national standard of discharge Standard of pollutants for municipal wastewater treatment plants (GB 18918-2002).
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. A rural sewage treatment device of pulse aeration artificial wetland filter tank is characterized by comprising:
the pulse aeration wetland filter tanks are a plurality of, the pulse aeration wetland filter tanks are connected end to end in sequence, each pulse aeration filter tank comprises two artificial wetland filter tanks, one artificial wetland filter tank is provided with a water inlet pipeline, the other artificial wetland filter tank is provided with a water outlet pipeline, the water outlet pipeline of one pulse aeration wetland filter tank is communicated with the water inlet pipeline of the adjacent pulse aeration wetland filter tank, two artificial wetland filter tanks in each pulse aeration wetland filter tank are communicated, and each artificial wetland filter tank is internally provided with a vegetable layer, a sand layer and a gravel layer from top to bottom in sequence;
the pulse aeration main pipes sequentially penetrate through the side walls of the artificial wetland filter tanks, and air inlets of the pulse aeration main pipes are connected with an air source;
the air inlet end of the pulse aeration branch pipe is communicated with the pulse aeration main pipe, the air outlet end of the pulse aeration branch pipe is communicated with the interior of the constructed wetland filter tank, and a plurality of pulse aeration branch pipes are arranged in each constructed wetland filter tank;
the electromagnetic pulse valve is fixed on the pulse aeration main pipe;
and the pulse aeration controller is electrically connected with the electromagnetic pulse valve.
2. The rural sewage treatment plant of pulse aeration artificial wetland filter tank according to claim 1, characterized in that: the vegetation layer comprises one or more of poly grass, redroot flower, calamus and bulrush.
3. The device for treating rural sewage by the pulse aeration artificial wetland filter tank according to claim 1, is characterized in that: the thickness of sand layer is 15cm.
4. The rural sewage treatment plant of pulse aeration artificial wetland filter tank according to claim 1, characterized in that: the thickness of the gravel layer is 50cm, and the particle size of the gravel in the gravel layer is 2.0-2.5cm.
5. The rural sewage treatment plant of pulse aeration artificial wetland filter tank according to claim 1, characterized in that: the lower extreme in gravel layer is fixed with a prefabricated perforated plate, the thickness of prefabricated perforated plate is 5cm, be equipped with a plurality of through-hole on the prefabricated perforated plate, every the aperture of through-hole is 8mm.
6. The rural sewage treatment plant of pulse aeration artificial wetland filter tank according to claim 1, characterized in that: and a gas flowmeter is arranged on the pulse aeration main pipe and is electrically connected with the pulse aeration controller.
7. The rural sewage treatment plant of pulse aeration artificial wetland filter tank according to claim 1, characterized in that: the water inlet pipeline, the pulse aeration main pipe and the pulse aeration branch pipe are all PPR pipes.
8. The rural sewage treatment plant of pulse aeration artificial wetland filter tank according to claim 1, characterized in that: and a communicating hole is arranged between two artificial wetland filter tanks in each pulse aeration wetland filter tank, a perforated water pipe is arranged in the communicating hole, and the perforated water pipe is used for communicating the two adjacent artificial wetland filter tanks.
9. The device for treating rural sewage by the pulse aeration artificial wetland filter tank according to claim 1, is characterized in that: waste gypsum is arranged in the water inlet pipeline.
10. The rural sewage treatment plant of pulse aeration artificial wetland filter tank according to claim 1, characterized in that: the artificial wetland filter tank is made of reinforced concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220830211.8U CN217921635U (en) | 2022-04-12 | 2022-04-12 | Rural sewage treatment device of pulse aeration constructed wetland filter tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220830211.8U CN217921635U (en) | 2022-04-12 | 2022-04-12 | Rural sewage treatment device of pulse aeration constructed wetland filter tank |
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| CN217921635U true CN217921635U (en) | 2022-11-29 |
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| CN202220830211.8U Active CN217921635U (en) | 2022-04-12 | 2022-04-12 | Rural sewage treatment device of pulse aeration constructed wetland filter tank |
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