CN114772867A - Artificial wetland process for sewage treatment - Google Patents
Artificial wetland process for sewage treatment Download PDFInfo
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- CN114772867A CN114772867A CN202210537255.6A CN202210537255A CN114772867A CN 114772867 A CN114772867 A CN 114772867A CN 202210537255 A CN202210537255 A CN 202210537255A CN 114772867 A CN114772867 A CN 114772867A
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
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- 238000012423 maintenance Methods 0.000 claims description 4
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
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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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/18—Use of gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Biodiversity & Conservation Biology (AREA)
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Abstract
The invention provides an artificial wetland process for sewage treatment, and relates to the technical field of sewage treatment. This kind of constructed wetland technology for sewage treatment, including film pile subassembly, film pile system and ecological wetland subassembly, film pile system links to each other with a film pile subassembly at least, film pile system is parallelly connected to be collected and is linked to each other with at least one ecological wetland subassembly, film pile subassembly includes outer frame, the inside of outer frame is provided with the membrane and props up, the left side that the membrane propped up is provided with produces the water pipe. By arranging the film stack system and the ecological wetland, the sewage treatment and recycling device not only achieves effective purification treatment, but also can achieve the principles of species symbiosis and material recycling in the ecological system and the structure and function coordination principle, fully exerts the production potential of resources on the premise of promoting the virtuous cycle of pollutants in the wastewater, prevents the environment from being polluted again, and obtains the best benefits of sewage treatment and recycling.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an artificial wetland process for sewage treatment.
Background
Sewage treatment: the sewage is purified to reach the water quality requirement of discharging into a certain water body or reusing. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people.
However, the existing sewage treatment device has a complex structure, high construction cost and inconvenience in transportation, and meanwhile, the traditional sewage treatment equipment has a complex structure and high technical content, non-professionals cannot conveniently maintain the equipment at regular intervals, and once the equipment is damaged, the maintenance cost is high.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an artificial wetland process for sewage treatment, which solves the problems of complex structure and high construction and maintenance cost of the conventional sewage treatment device.
(II) technical scheme
In order to realize the purpose, the invention is realized by the following technical scheme: an artificial wetland device for sewage treatment comprises a film pile assembly, a film pile system and an ecological wetland assembly, wherein the film pile system is at least connected with one film pile assembly, the film pile system is connected in parallel and collected to be connected with at least one ecological wetland assembly, the film pile assembly comprises an outer frame, a film support is arranged inside the outer frame, a water production pipe is arranged on the left side of the film support, a film pile aeration main pipe is arranged outside the left side of the outer frame, the output end of the film pile aeration main pipe is connected with a plurality of film pile aeration branch pipes, the chemical cleaning effect of a membrane can be greatly improved by arranging the film pile aeration main pipe and the film pile aeration branch pipes, the ecological wetland assembly comprises a basic tamping layer, a water collecting area packing layer, an ecological packing side plum layer, an aquatic plant layer, an adjustable water outlet and water distribution area packing, the top end of the basic tamping layer is provided with an impermeable film, the left side of prevention of seepage membrane is provided with the water distribution canal, the right side of water distribution canal is provided with the valve well, the right side of prevention of seepage membrane is provided with the canal that catchments, the top of prevention of seepage membrane is provided with prevention of seepage membrane protective layer.
Preferably, the film stack system comprises a chemical cleaning water tank, a raw medicine tank, a fan and a back flushing water tank, wherein the chemical cleaning water tank is connected with a liquid medicine suction pump through a pipeline, the output end of the liquid medicine suction pump is connected with a medicine conveying pipe surrounding the sewage tank, and the output end of the raw medicine tank is connected with the medicine conveying pipe surrounding the sewage tank.
Preferably, the output end of the fan is connected with one end of a membrane stack aeration main pipe of the plurality of corresponding position film stack assemblies through a pipeline, the output end of the backwash water tank is connected with a water pump through a pipeline, the output end of the water pump is connected with the other end of the membrane stack aeration main pipe of the plurality of corresponding position film stack assemblies through a pipeline, the output end of the water pump is connected with the lower end of the backwash water tank through a pipeline, pretreated sewage is introduced into the sewage tank, sludge in the sewage tank can be intercepted by a plurality of membranes in the membrane support, the backwash water tank can backwash water with higher and higher sludge concentration in the sewage tank in the sewage purification process to ensure that the sludge thickness in the sewage tank is kept at a reasonable height, and the sewage tank can chemically purify the membrane support used for a period of time through the designed chemical cleaning water tank to play a role in maintaining the membranes, the membrane can continuously and stably operate, and the flux can be timely recovered, so that the chemical cleaning effect of the membrane can be greatly improved by arranging the membrane stack aeration main pipe and the membrane stack aeration branch pipe.
Preferably, a flowmeter is arranged between the output end of the backwash water tank and a pipeline of the water pump, and an electromagnetic valve is arranged between the output end of the water pump and the pipeline of the backwash water tank.
Preferably, the raw medicine box, the chemical cleaning water tank, the liquid medicine suction pump, the fan, the back flushing water tank and the water pump are all arranged outside the sewage pool.
Preferably, the anti-seepage film protective layer is arranged between the valve well and the inner side of the water collecting channel, the lower end of the water collecting region packing layer is connected with the top end of the anti-seepage film protective layer, the outer part of the water collecting region packing layer is connected with the outer part of the water collecting channel, the lower end of the water distribution region packing is connected with the top end of the anti-seepage film protective layer, and the outer part of the water distribution region packing is connected with the outer part of the valve well.
Preferably, the ecological filler side plum layer is arranged between the filler layer of the water collection area and the inner side of the filler of the water distribution area, the aquatic plant layer is arranged at the top end of the ecological filler side plum layer, the input end of the adjustable water outlet is arranged in the filler layer of the water collection area, and the output end of the adjustable water outlet is arranged in the water collection channel.
An artificial wetland process for sewage treatment comprises the following steps:
s1. device assembly connection
Firstly, a certain number of film stack components are assembled and then placed in a sewage pool, wherein each film stack component consists of an outer frame, a film support, a water production pipe, a film stack aeration main pipe and a film stack aeration branch pipe, each film support consists of a plurality of film films, each film consists of a film unit, a central water production pipe, a sealing locking plate, a pressing sealing cover, a locking nut and an O-shaped sealing ring, once a certain film is damaged, the film support is convenient to disassemble and fast to replace, the outer frame is formed by welding 304 steel angles, the film supports are fixed in the outer frame, the water production pipe is designed according to the amplification of 10% of the sum of the sectional areas of the film supports, a main pipe connecting a main pipe water outlet of each film stack and each film stack is also used as a transition pipe according to the flow rate of 1.5m/s, the sizes and the distribution of air pipes and air holes are set according to the sizes of the film stacks by the film stack aeration branch pipes, the aeration main pipe of the film stacks is also designed according to the flow rate of 12m/s, the sum of the sectional areas of the aeration main pipes of the plurality of film stack assemblies is enlarged by more than 10 percent to calculate the sectional area of the engineering aeration main pipe, and a certain number of film stack assemblies are arranged in the sewage pool and then are connected with a film stack system outside the sewage pool through corresponding connecting pieces;
s2. ecological wetland construction
Selecting a proper place to construct a foundation ramming layer, paving an anti-seepage film above the foundation ramming layer, arranging a water distribution channel and a valve well at the left end of the anti-seepage film, connecting the input end of the water distribution channel with the output end of a sewage pool through a pipeline, arranging a water collection channel at the right side of the anti-seepage film, paving an anti-seepage film protective layer at the top end of the anti-seepage film, wherein the anti-seepage film protective layer is coarse sand, then respectively arranging a water collection area packing layer and a water distribution area packing at the two sides of the anti-seepage film protective layer, wherein the water collection area packing layer and the water distribution area packing consist of cobbles with different sizes, then filling a certain amount of ecological packing side plum layer between the water collection area packing layer and the water distribution area packing, the ecological packing side plum layer consists of quartz sand, gravel, active carbon and packing zeolite in a certain proportion, and finally placing a certain proportion of calamus, shallot, water bamboo, cattail, willow herb and loosestrife on the surface of the ecological packing side plum layer, Then Li Hua, water candle, cyperus alternifolius, water lily wetland plants;
s3, assembling and running
Pretreated sewage is introduced into a sewage tank, sludge in the sewage tank can be intercepted by a plurality of membranes in membrane branches, a backwash water tank can backwash water with higher and higher sludge concentration in the sewage tank in the sewage purification process to ensure that the sludge thickness in the sewage tank is kept at a reasonable height, the sewage tank can chemically purify the membrane branches used for a period of time through a designed chemical cleaning water tank to play a role in maintaining the membranes, so that the membranes can continuously and stably run, the chemical cleaning effect of the membranes can be greatly improved by arranging a membrane stack aeration main pipe and a membrane stack aeration branch pipe in time to recover flux, the treated sewage in the sewage tank is discharged into a basic tamping layer in an ecological wetland component through a pipeline, then a valve is opened to convey the sewage to a water distribution area filler, and the sewage and the sludge pass through an ecological filler side plum layer in the process of flowing in a certain direction, continuously utilizing the physical, chemical and biological synergistic effects of soil, artificial media, plants and microorganisms to purify sewage and sludge again, and discharging the treated water through the adjustable water outlet.
(III) advantageous effects
The invention provides an artificial wetland process for sewage treatment. The method has the following beneficial effects:
1. by arranging the film stack system and the ecological wetland, the invention not only achieves effective purification treatment on sewage, but also can achieve the principles of species symbiosis and material recycling in the ecological system and the coordination principle of structure and function, fully exerts the production potential of resources on the premise of promoting the virtuous cycle of pollutants in the wastewater, prevents the environmental recontamination and obtains the best benefits of sewage treatment and reclamation.
2. According to the invention, the chemical cleaning water tank and the raw medicine tank are arranged in the film stack system, so that the film can be chemically cleaned when the transmembrane pressure difference reaches 0.25Mpa or the film continuously runs for three months, the film maintenance effect is achieved, the film can continuously and stably run, and the flux is timely recovered.
3. The invention can greatly improve the chemical cleaning effect by arranging the fan, the membrane stack aeration main pipe and the membrane stack aeration branch pipe in the film stack system and scrubbing the membrane surface by aeration in the chemical cleaning process of the membrane in the membrane support.
4. The ecological wetland is low in construction and operation cost, easy to maintain, low in technical content, convenient to modularize and install and simple to manage.
Drawings
FIG. 1 is a front view of a film stack system of the present invention;
FIG. 2 is a rear view of the film stack system of the present invention;
FIG. 3 is a schematic view of a film stack assembly according to the present invention;
fig. 4 is a schematic structural view of the ecological wetland assembly of the invention.
Wherein, 1, the film stack component; 101. an outer frame; 102. membrane branch; 103. a water production pipe; 104. a membrane stack aeration main pipe; 105. a membrane stack aeration branch pipe; 2. a film stack system; 201. a chemical cleaning water tank; 202. a liquid medicine suction pump; 203. a raw medicine box; 204. a fan; 205. a backwash tank; 206. a water pump; 3. an ecological wetland assembly; 301. a foundation ramming layer; 302. an impermeable membrane; 303. distributing water channels; 304. a valve well; 305. a water collecting channel; 306. a protective layer of impermeable film; 307. a water collecting area packing layer; 308. ecological filling lateral plum layer; 309. an aquatic plant layer; 3010. an adjustable water outlet; 3011. and a water distribution area is filled with filler.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example (b):
as shown in fig. 1-4, the embodiment of the invention provides an artificial wetland device for sewage treatment, which comprises a film stack assembly 1, a film stack system 2 and an ecological wetland assembly 3, wherein the film stack system 2 is connected with at least one film stack assembly 1, the film stack system 2 is connected in parallel and collected to be connected with at least one ecological wetland assembly 3, the film stack assembly 1 comprises an outer frame 101, a film support 102 is arranged inside the outer frame 101, a water production pipe 103 is arranged on the left side of the film support 102, a film stack aeration main pipe 104 is arranged outside the left side of the outer frame 101, the output end of the film stack aeration main pipe 104 is connected with a plurality of film stack aeration branch pipes 105, the ecological wetland assembly 3 comprises a basic tamping layer 301, a water collection area 307, an ecological filler side plum layer 308, an aquatic plant layer 309, an adjustable water outlet 3010 and a water distribution area filler 3011, an impermeable film 302 is arranged on the top end of the basic tamping layer 301, a water distribution channel 303 is arranged on the left side of the impermeable membrane 302, a valve well 304 is arranged on the right side of the water distribution channel 303, a water collection channel 305 is arranged on the right side of the impermeable membrane 302, and an impermeable membrane protective layer 306 is arranged at the top end of the impermeable membrane 302.
The film stack system 2 comprises a chemical cleaning water tank 201, a raw medicine tank 203, a fan 204 and a back flushing water tank 205, wherein the chemical cleaning water tank 201 is connected with a liquid medicine suction pump 202 through a pipeline, the output end of the liquid medicine suction pump 202 is connected with a medicine conveying pipe surrounding the sewage tank, and the output end of the raw medicine tank 203 is connected with the medicine conveying pipe surrounding the sewage tank.
The output end of the fan 204 is connected with one end of the main membrane stack aeration pipe 104 of the plurality of corresponding position film stack assemblies 1 through a pipeline, the output end of the back flushing water tank 205 is connected with a water pump 206 through a pipeline, the output end of the water pump 206 is connected with the other end of the main membrane stack aeration pipe 104 of the plurality of corresponding position film stack assemblies 1 through a pipeline, and the output end of the water pump 206 is connected with the lower end of the back flushing water tank 205 through a pipeline.
A flow meter is arranged between the output end of the backwash tank 205 and the pipeline of the water pump 206, and an electromagnetic valve is arranged between the output end of the water pump 206 and the pipeline of the backwash tank 205.
The raw material tank 203, the chemical cleaning water tank 201, the chemical liquid suction pump 202, the fan 204, the backwash water tank 205 and the water pump 206 are all disposed outside the sewage tank.
The anti-seepage film protection layer 306 is arranged between the valve well 304 and the inner side of the water collecting channel 305, the lower end of the water collecting region packing layer 307 is connected with the top end of the anti-seepage film protection layer 306, the outer part of the water collecting region packing layer 307 is connected with the outer part of the water collecting channel 305, the lower end of the water distribution region packing 3011 is connected with the top end of the anti-seepage film protection layer 306, and the outer part of the water distribution region packing 3011 is connected with the outer part of the valve well 304.
The ecological filler side plum layer 308 is arranged between the inner sides of the water collection area filler layer 307 and the water distribution area filler 3011, the aquatic plant layer 309 is arranged at the top end of the ecological filler side plum layer 308, the input end of the adjustable water outlet 3010 is arranged in the water collection area filler layer 307, and the output end of the adjustable water outlet 3010 is arranged in the water collection channel 305.
An artificial wetland process for sewage treatment comprises the following steps:
s1. device assembly connection
Firstly, a certain number of film stack components 1 are assembled and then placed in a sewage pool, wherein the film stack components 1 consist of an outer frame 101, film branches 102, a water production pipe 103, a film stack aeration main pipe 104 and a film stack aeration branch pipe 105, the film branches 102 consist of a plurality of film films, the film films consist of film units, a central water production pipe, sealing locking plates, a pressing sealing cover, locking nuts and O-shaped sealing rings, the outer frame 101 is formed by welding 304 angle steels, the film branches 102 are fixed in the outer frame 101, the water production pipe 103 is designed by enlarging the sum of the sectional areas of the film branches 102 by 10%, a main pipe connecting a main pipe water outlet of the film stack and each film stack is also used as a transition pipe according to the flow rate of 1.5m/s, the sizes and the distribution of air pipes and air holes are set according to the sizes of the film stacks by the film stack aeration branch pipes 105, the aeration main pipe of the film stack is also designed according to the flow rate of 12m/s, the sum of the sectional areas of the aeration main pipes of the plurality of film stack assemblies is enlarged by more than 10 percent to calculate the sectional area of the engineering aeration main pipe, a certain number of film stack assemblies 1 are arranged in the sewage pool, and then the film stack assemblies 1 are connected with a film stack system 2 outside the sewage pool through corresponding connecting pieces;
s2. ecological wetland construction
Selecting a proper site to construct a basic tamping layer 301, paving an impermeable membrane 302 above the basic tamping layer 301, arranging a water distribution channel 303 and a valve well 304 at the left end of the impermeable membrane 302, connecting the input end of the water distribution channel 303 with the output end of a sewage tank through a pipeline, arranging a water collection channel 305 at the right side of the impermeable membrane 302, paving an impermeable membrane protection layer 306 at the top end of the impermeable membrane 302, wherein the impermeable membrane protection layer 306 is coarse sand, arranging a water collection region packing layer 307 and a water distribution region packing 3011 at two sides of the impermeable membrane protection layer 306 respectively, wherein the water collection region packing layer 307 and the water distribution region packing 3011 are composed of cobblestones with different sizes, then filling a certain amount of ecological filling side plum layers 308 between the water collection region packing layer 307 and the water distribution region packing 3011, wherein the ecological filling side plum layers 308 are composed of quartz sand, gravel, active carbon and packing zeolite in a certain proportion, and finally placing a certain proportion of calamus, water, The action mechanisms of the allium mongolicum regel, water bamboo, cattail, loosestrife, religious flower, water candle, cyperus alternifolius and water lily wetland plants comprise adsorption, detention, filtration, oxidation reduction, precipitation, microbial decomposition, transformation, plant shielding, residue accumulation, transpiration moisture and nutrient absorption and the action of various animals. The ecological system is a comprehensive ecological system, applies the principles of species symbiosis and material recycling regeneration in the ecological system and the principle of structure and function coordination, fully exerts the production potential of resources on the premise of promoting the virtuous cycle of pollutants in the wastewater, prevents the environmental recontamination and obtains the best benefits of sewage treatment and resource utilization;
s3, assembling and running
Pretreated sewage is introduced into a sewage tank, sludge in the sewage tank can be intercepted by a plurality of membranes in the membrane support 102, a backwash water tank 205 can backwash water with higher and higher sludge concentration in the sewage tank in the sewage purification process to ensure that the sludge thickness in the sewage tank is kept at a reasonable height, then the sewage tank can chemically purify the membrane support 102 used for a period of time through a designed chemical cleaning water tank 201, the membrane is maintained, the membrane can continuously and stably operate, the flux is timely recovered, the chemical cleaning effect of the membrane can be greatly improved through arranging a membrane stack aeration main pipe 104 and a membrane stack aeration branch pipe 105, the treated sewage in the sewage tank is discharged into a basic tamping layer 301 in an ecological wetland component 3 through a pipeline, then a valve is opened to convey the sewage to a water distribution area filler 3011, the sewage and the sludge pass through an ecological filler side plum layer 308 in the process of flowing along a certain direction, continuously utilizing the physical, chemical and biological synergistic effects of soil, artificial media, plants and microorganisms to purify the sewage and sludge again, and discharging the treated water through the adjustable water outlet 3010.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a constructed wetland device for sewage treatment, includes film stack subassembly (1), film stack system (2) and ecological wetland subassembly (3), film stack system (2) link to each other with a film stack subassembly (1) at least, film stack system (2) are parallelly connected to be assembled and link to each other with at least one ecological wetland subassembly (3), its characterized in that:
the film stack assembly (1) comprises an outer frame (101), wherein membrane branches (102) are arranged inside the outer frame (101), water production pipes (103) are arranged on the left sides of the membrane branches (102), a membrane stack aeration main pipe (104) is arranged outside the left side of the outer frame (101), and the output end of the membrane stack aeration main pipe (104) is connected with a plurality of membrane stack aeration branch pipes (105);
ecological wetland subassembly (3) are packed (3011) including basic tamp layer (301), catchment area packing layer (307), ecological filler side plum layer (308), aquatic plant layer (309), adjustable delivery port (3010) and water distribution district, the top of basic tamp layer (301) is provided with prevention osmosis membrane (302), the left side of prevention osmosis membrane (302) is provided with water distribution channel (303), the right side of water distribution channel (303) is provided with valve well (304), the right side of prevention osmosis membrane (302) is provided with water collection channel (305), the top of prevention osmosis membrane (302) is provided with prevention osmosis membrane protective layer (306).
2. The artificial wetland process for sewage treatment according to claim 1, which is characterized in that: film stack system (2) are including chemical clearance water tank (201), former medicine case (203), fan (204) and backwash water tank (205), chemical clearance water tank (201) have liquid medicine suction pump (202) through the pipe connection, the output of liquid medicine suction pump (202) links to each other with the defeated pencil that encircles in the sewage pond, the output of former medicine case (203) links to each other with the defeated pencil that encircles in the sewage pond.
3. The constructed wetland process for sewage treatment according to claim 2, wherein: the membrane stack aeration of the output of fan (204) and a plurality of relevant position film stack subassembly (1) is responsible for (104) one end and links to each other through the pipeline, the output of backwash water tank (205) has water pump (206) through the pipe connection, the output of water pump (206) is responsible for (104) the other end with the membrane stack aeration of a plurality of relevant position film stack subassemblies (1) through the pipeline and links to each other, the output of water pump (206) passes through the pipeline and links to each other with the lower extreme of backwash water tank (205).
4. The artificial wetland process for sewage treatment according to claim 2, which is characterized in that: a flowmeter is arranged between the output end of the back flushing water tank (205) and a pipeline of the water pump (206), and an electromagnetic valve is arranged between the output end of the water pump (206) and the pipeline of the back flushing water tank (205).
5. The artificial wetland process for sewage treatment according to claim 2, which is characterized in that: the raw material tank (203), the chemical cleaning water tank (201), the liquid medicine suction pump (202), the fan (204), the backwashing water tank (205) and the water pump (206) are all arranged outside the sewage pool.
6. The artificial wetland process for sewage treatment according to claim 1, which is characterized in that: the impermeable membrane protection layer (306) is arranged between the valve well (304) and the inner side of the water collecting channel (305), the lower end of the water collecting region packing layer (307) is connected with the top end of the impermeable membrane protection layer (306), the outer part of the water collecting region packing layer (307) is connected with the outer part of the water collecting channel (305), the lower end of the water distribution region packing (3011) is connected with the top end of the impermeable membrane protection layer (306), and the outer part of the water distribution region packing (3011) is connected with the outer part of the valve well (304).
7. The constructed wetland process for sewage treatment according to claim 1, wherein the constructed wetland comprises: the ecological filler side plum layer (308) is arranged between the inner sides of the water collecting area filler layer (307) and the water distribution area filler (3011), the aquatic plant layer (309) is arranged at the top end of the ecological filler side plum layer (308), the input end of the adjustable water outlet (3010) is arranged in the water collecting area filler layer (307), and the output end of the adjustable water outlet (3010) is arranged in the water collecting channel (305).
8. The constructed wetland process for sewage treatment according to claim 1, wherein the constructed wetland comprises: the method comprises the following steps:
s1, device assembly connection
Firstly, a certain number of film stack components (1) are assembled and then placed in a sewage pool, wherein the film stack components (1) consist of an outer frame (101), film branches (102), a water production pipe (103), a film stack aeration main pipe (104) and film stack aeration branch pipes (105), the film branches (102) consist of a plurality of film films, the film films consist of film units, a central water production pipe, a sealing locking sheet, a pressing sealing cover, a locking nut and an O-shaped sealing ring, the outer frame (101) is formed by welding 304 angle steel, the film branches (102) are fixed in the outer frame (101), the water production pipe (103) is designed by enlarging 10% of the sum of the sectional areas of the film branches (102), a main pipe for connecting the water outlets of the main pipes of the film stacks and all film stacks is also used as a transition pipe according to the flow rate of 1.5m/s, and the film stack aeration branch pipes (10) and the film stack aeration branch pipes (105) set the sizes and the distribution of air pipes according to the sizes of the film stacks, the aeration main pipe of the membrane stack is also designed according to the flow velocity of 12m/s, the sum of the sectional areas of the aeration main pipes of a plurality of film stack components is enlarged by more than 10 percent to calculate the sectional area of the engineering aeration main pipe, a certain number of film stack components (1) are arranged in the sewage pool, and then the film stack components (1) are connected with a film stack system (2) outside the sewage pool through corresponding connecting pieces;
s2. ecological wetland construction
Selecting a proper site to construct a foundation ramming layer (301), paving an impermeable membrane (302) above the foundation ramming layer (301), arranging a water distribution channel (303) and a valve well (304) at the left end of the impermeable membrane (302), connecting the input end of the water distribution channel (303) with the output end of a sewage pool through a pipeline, arranging a water collection channel (305) at the right side of the impermeable membrane (302), paving an impermeable membrane protection layer (306) at the top end of the impermeable membrane (302), wherein the impermeable membrane protection layer (306) is coarse sand, then respectively arranging a water collection area packing layer (307) and a water distribution area packing (3011) at two sides of the impermeable membrane protection layer (306), wherein the water collection area packing layer (307) and the water distribution area packing (3011) are composed of cobblestones with different sizes, then filling a certain amount of ecological packing side plum layer (308) between the water collection area packing layer (307) and the water distribution area packing (3011), and the ecological packing side plum layer (308) is composed of quartz sand, quartz sand and sand, The ecological filling material comprises gravel, active carbon and filling zeolite according to a certain proportion, and finally, calamus, allium mongolicum regel, water bamboo, cattail, loosestrife, hydrangea macrophylla, candelilla, cyperus tinctorius and water lily wetland plants according to a certain proportion are placed on the surface of an ecological filling material side plum layer (308);
s3, assembling and running
Pretreated sewage is connected into a sewage tank, sludge in the sewage tank can be intercepted by a plurality of membranes in membrane supports (102), a backwash water tank (205) can backwash water with higher and higher sludge concentration in the sewage tank in the sewage purification process to ensure that the sludge thickness in the sewage tank is kept at a reasonable height, the membrane supports (102) used for a period of time can be chemically purified by the sewage tank through a designed chemical cleaning water tank (201), the membrane maintenance effect is achieved, the membranes can continuously and stably operate, the flux can be timely recovered, the chemical cleaning effect of the membranes can be greatly improved by arranging a membrane stack aeration main pipe (104) and a membrane stack aeration branch pipe (105), the treated sewage in the sewage tank is discharged into a basic tamping layer (301) in an ecological wetland component (3) through a pipeline, and then a valve is opened to convey the sewage to a water distribution area filler (3011), in the process that sewage and sludge flow along a certain direction, the sewage and the sludge pass through the ecological filler lateral plum layer (308), the sewage and the sludge are purified again by continuously utilizing the physical, chemical and biological synergistic action of soil, artificial media, plants and microorganisms, and the treated water is discharged through the adjustable water outlet (3010).
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