CN114538716A - Sewage ecological restoration system and restoration method - Google Patents

Sewage ecological restoration system and restoration method Download PDF

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Publication number
CN114538716A
CN114538716A CN202210274282.9A CN202210274282A CN114538716A CN 114538716 A CN114538716 A CN 114538716A CN 202210274282 A CN202210274282 A CN 202210274282A CN 114538716 A CN114538716 A CN 114538716A
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China
Prior art keywords
sewage
filler
water
ecological restoration
ozone
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CN202210274282.9A
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Chinese (zh)
Inventor
刘涛
施怀荣
孙丰营
赵维文
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Beijing Bangyuan Environmental Protection Technology Co ltd
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Beijing Bangyuan Environmental Protection Technology Co ltd
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Priority to CN202210274282.9A priority Critical patent/CN114538716A/en
Publication of CN114538716A publication Critical patent/CN114538716A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C02F3/347—Use of yeasts or fungi
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00—Aeration of stretches of water
    • 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 relates to the technical field of sewage treatment, in particular to a sewage ecological restoration system and a restoration method. The sewage ecological restoration system can effectively remove the nondegradable organic matters such as ammonia nitrogen, total phosphorus and the like in sewage, and the contact oxidation pond and the subsurface flow constructed wetland can improve the landscape effect.

Description

Sewage ecological restoration system and restoration method
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage ecological restoration system, and particularly relates to treatment of sewage at water inlets of rivers around cities and treatment and restoration of urban landscape water.
Background
Along with the development of social economy, water treatment technology is mature, although the black and odorous water body of the domestic water body is basically eliminated, people have higher requirements on living comfort level, water quality improvement and riverway attractiveness are urgently solved, a sewage pipe network is imperfect, a large amount of domestic sewage, agricultural sewage and the like are discharged into a riverway to pollute the water quality, the domestic sewage, the agricultural sewage and the like contain a large amount of pollutants such as COD (chemical oxygen demand), ammonia nitrogen and the like, although a small amount of sewage can not cause great damage after being converged into the riverway, eutrophication can be formed when the self-purification capacity of the water body is exceeded after a large amount of sewage is converged into the riverway, further the biological community in the water body is changed, irreversible damage is caused, the use function and value of the water body are reduced, germs in the sewage can also propagate in a large amount, harmful gas is released, the physical health of passways and nearby residents is directly damaged, and even infectious diseases can be caused, and the appearance and the ecological environment quality of the city are influenced due to poor appearance and the sense of the sewage.
Aiming at the current water environment problem, a sewage ecological restoration system is developed, the contents of indexes such as COD (chemical oxygen demand), ammonia nitrogen, total phosphorus, total nitrogen and the like in a water body are mainly reduced, the water quality is kept and improved, meanwhile, the water body transparency is improved, a river channel is beautified, the peculiar smell of the water body is eliminated, and sterilization and disinfection are realized.
Disclosure of Invention
The invention aims to provide a sewage ecological restoration system and a restoration method.
The invention aims to solve the problems of carrying out advanced treatment on landscape water bodies and river water needing to be subjected to target extraction, improving the landscape effect and sterilizing.
The invention provides a sewage ecological restoration method, which comprises the following steps:
s1, filtering the sewage by a filtering material;
s2, performing biological filtration and aeration oxidation treatment on the sewage treated by the S1;
s3, carrying out plant purification, biological treatment and ecological filtration treatment on the sewage treated by the S2 through an undercurrent artificial wetland;
s4, carrying out ozone sterilization treatment on the sewage treated by the S3, and discharging after the treatment is finished.
The invention also provides a restoration system used in the sewage ecological restoration method, wherein a biological filter bed, a contact oxidation pond, an undercurrent artificial wetland and an ozone device are sequentially arranged along the water flow direction, an equipment box is arranged on the bank of the undercurrent artificial wetland, and the ozone device is positioned in the equipment box.
Furthermore, a water inlet pipe with an adjusting valve is arranged above the left side of the biological filter bed, a functional ceramsite packing layer is paved inside the biological filter bed, the right side of the biological filter bed is separated from the contact oxidation pond through a partition plate, a water outlet is arranged at the lower part of the partition plate, and a liftable gate is arranged on the partition plate and used for controlling the size of the water outlet.
Furthermore, an aeration pipe network is laid at the bottom of the contact oxidation pond, a filler support is arranged above the aeration pipe network, three layers of biological fillers are laid on the filler support, the right side of the contact oxidation pond is separated from the subsurface flow constructed wetland through a separation plate, and an overflow water outlet pipe is arranged at the upper part of the separation plate.
Furthermore, the biological filler paved on the filler bracket at the bottom of the contact oxidation pond sequentially comprises zeolite filler, large-particle volcanic filler and ceramsite filler from top to bottom, and the thickness ratio of the three fillers is (2-4): 1-3): 1; preferably, the ratio of 2:2: 1, the particle size of the large-particle volcanic rock filler is more than 4 cm. The three fillers have strong adsorption capacity, can filter and adsorb organic matters and heavy metal ions in water, and simultaneously provide living environment for microorganisms to form a biological biofilm for purifying water quality.
Furthermore, a water collecting pipe network is arranged at the bottom of the subsurface flow constructed wetland, and purified water is collected and pumped into the ozone device through a water suction pump. A filler bracket is arranged above the planting soil, three layers of fillers are laid on the filler bracket, and a layer of planting soil is laid on the upper layer of the fillers and used for planting proper plants. Three plants are selected to be planted above the planting soil according to the local climate and the general situation of the river channel, the plants can beautify the river channel, and the root systems can absorb toxic and harmful substances in the water body and absorb and enrich heavy metals, so that the stable ecological system can be constructed by the water body.
Furthermore, small-particle volcanic rock filler, gravel filler and ceramsite filler are sequentially laid on the filler support at the bottom of the subsurface flow constructed wetland from top to bottom, and an aeration pipe is also arranged at the bottom of the filler support; the thickness ratio of the three fillers is (1-2): 2-4):1, preferably 2:2: 1 or 2:3:1, the small-particle volcanic rock filler is less than 3 cm. The three fillers have the characteristics of developed gaps, large specific surface area and the like, increase air circulation, facilitate full fusion of sewage and biological agents, efficiently treat water quality, have strong attachment capacity of biological bacteria, and ensure the activity and the durability of the biological bacteria, thereby better decomposing organic matters in water.
Furthermore, the ozone device comprises an ozone chamber and an ozone generator, a generating plate is arranged at the bottom of the ozone chamber, ozone is filled in the ozone chamber through the ozone generator, a water inlet pipeline is arranged on the left side, a water outlet pipeline is arranged on the right side, a water suction pump is connected to the water inlet pipeline, and the water inlet end is positioned at the bottom of the subsurface flow constructed wetland.
Furthermore, a preparation storage box is arranged in the equipment box, biological preparations can be put into the contact oxidation pond through an aeration pipeline, and the micro-nano aerator is connected with the bottom of the contact oxidation pond and is paved with an aeration pipe network and an aeration pipe at the bottom of the subsurface flow constructed wetland.
Furthermore, the biological agent is a microbial agent and comprises nitrobacteria, denitrifying bacteria, algicidal bacteria, yeast, sulfurous bacteria and sulfur bacteria in the mass ratio of (1-5) to (2-10) to (0.5-2).
Furthermore, the mass ratio of the nitrobacteria, the denitrifying bacteria, the algae-lysing bacteria, the yeast, the sulfur bacteria and the sulfur bacteria in the microbial preparation is 2:2:2:3:1: 1.
According to the sewage ecological restoration system, the biological agent carried by micro-nano bubbles at the bottom of the contact oxidation pond and the sewage are spread to the whole body from the bottom and fully contacted with the filler, microorganisms in the biological agent and microorganisms in the sewage can be quickly attached to the surface of the filler under good growth conditions, a micro bioreactor can be formed near the microorganisms attached to the surface of the filler, pollutants such as organic matters in the sewage can be efficiently removed, the activity of a filler biofilm is ensured under the continuous flushing of ascending air flow and water flow on the filler, all three fillers have large specific surface areas, the aperture ratio is high, the film hanging speed is high, the time period is short, more microorganism amount is easily kept, the types of organisms attached to the filler are many, and the organic matter removal efficiency can be greatly improved.
According to the undercurrent artificial wetland, proper plants are selected according to the river course, harmful ions such as heavy metal ions in the sewage are absorbed, the river course is beautified, and the three layers of fillers laid below not only provide growth conditions for microorganisms, but also can filter and adsorb organic matters, heavy metal ions and the like in the sewage, so that the water quality is further optimized.
The ozone generator is arranged in the ozone chamber of the ozone device and injects ozone into the water body through the external ozone generator, and the ozone is decomposed to form hydroxyl free radicals with strong oxidizing property in the water body, thereby achieving the effects of sterilization, deodorization and the like on the water body, degrading organic matters in the water body and purifying the water body.
The sewage ecological restoration system can replace the traditional combination of micro-nano aeration, biological agents, biological filler biofilm formation, floating wetland construction of an ecological system and ozone treatment aiming at the characteristic of complex water pollutants, and can carry out advanced treatment on organic matters, inorganic matters and the like and pathogenic bacteria in the water body, so that the water quality of the water body is efficiently improved.
Compared with the traditional aeration, the aeration method adopts micro-nano aeration, the bubbles are uniform and fine, the aeration effect is better than that of bottom aeration, the transparency of the water body can be improved, and the landscape effect is good. The biological agent has pertinence to sewage with complex pollutants, and has the advantages of good compound property, strong fecundity, small usage amount, long storage life and abundant metabolites. The adopted biological filler comprises volcanic filler, zeolite filler and gravel filler, has larger specific surface area and high aperture ratio compared with other traditional fillers, thereby having fast film formation, more film formation and long film formation, and the filtering and adsorbing capacity is far higher than that of the traditional filler, and the water purification is efficiently realized.
In addition, the dual biological ecological treatment system formed by the contact oxidation pond and the filler of the subsurface flow constructed wetland not only has a common filtering and purifying function, but also is coupled with a biological membrane treatment process, and is a strengthening treatment combining two types of treatment, and the purifying function of wetland plants is added, so that a very strong sewage ecological restoration effect can be achieved, the plant design of the constructed wetland can increase the beautiful effect of a river channel, and micro-nano aeration, biological strains and plants are combined to construct a perfect water body restoration ecology.
Description of the drawings:
FIG. 1 is a flow chart of the whole device of the sewage ecological restoration system
FIG. 2 is a schematic structural view of the entire device of the sewage ecological restoration system
Detailed Description
In order to better show the technical means and characteristics of the sewage ecological restoration system, the invention is further explained below by combining specific implementation cases.
As shown in figure 1, the sewage ecological restoration system is provided with a biological filter bed (I), a contact oxidation pond (II), an undercurrent artificial wetland (III) and an ozone device 16 in sequence along the water flow direction. An equipment box is arranged beside the ozone generator, and an ozone device 16, a preparation storage tank 18, a micro-nano aerator 17, a water pump and other equipment are placed in the equipment box. A water inlet pipe 1 with an adjusting valve is arranged above the left side of the biological filter bed, a functional ceramsite packing layer 2 is paved inside the biological filter bed, the right side of the biological filter bed is separated from the contact oxidation pond through a partition plate 4, a water outlet 4-1 is arranged at the lower part of the partition plate 4, and a liftable gate 3 is arranged on the partition plate and used for controlling the size of the water outlet 4-1. The bottom of the contact oxidation pond is paved with an aeration pipe network 21, a filler support is arranged above the aeration pipe network, zeolite filler 6, volcanic filler 7 and ceramic particles 8 are sequentially paved on the filler support from top to bottom, and the thickness proportion of the three fillers is 2:2: the right side of the contact oxidation pond 1 is separated from the subsurface flow constructed wetland by a separation plate 5, and the upper part of the separation plate 5 is provided with an overflow water outlet pipe 5-1. The bottom of the subsurface flow constructed wetland is provided with a water collecting pipe network 14, and purified water is collected and pumped into an ozone device 16 through a water suction pump. The top sets up the filler support and lays the three-layer filler on the filler support, and the one deck soil 9 of planting is laid on the filler upper strata, and the river course not only can be beautified to this embodiment planting has reed, cattail and water caltrop, and poisonous harmful substance in the root system can absorb and enrich the heavy metal in the water moreover, does benefit to the water and constructs stable ecosystem.
In the embodiment, volcanic filler 10, gravel filler 11 and ceramsite filler 12 are sequentially paved on the filler support at the bottom of the subsurface flow constructed wetland from top to bottom, and the thickness ratio of the three fillers is 2:2: 1, an aeration pipe 15 is also arranged at the bottom; the ozone device 16 comprises an ozone chamber and an ozone generator, a generating plate is arranged at the bottom of the ozone chamber, the ozone chamber is filled with ozone through the ozone generator, a water inlet pipeline 22 is arranged on the left side, a water outlet pipeline 19 is arranged on the right side, a water suction pump is connected to the water inlet pipeline 11, and the water inlet end is connected with a water collecting pipe network 14 at the bottom of the subsurface flow constructed wetland.
In the embodiment, a preparation storage tank 18 is arranged in the equipment box, biological preparations can be put into the contact oxidation pond through an aeration pipeline 20, and a micro-nano aerator 17 is connected with an aeration pipe network 21 paved at the bottom of the contact oxidation pond and an aeration pipe 15 at the bottom of the subsurface flow constructed wetland. The biological agent is a microbial agent and comprises nitrobacteria, denitrifying bacteria, algae-lysing bacteria, yeast, sulfurous bacteria and sulfur bacteria in a mass ratio of 2:2:2:3:1: 1.
When the device is used, sewage flows into a biological filter bed from a water inlet pipe 1, is adsorbed and purified by functional filler, flows into a contact oxidation pond from the bottom through a water outlet 4-1 controlled by a gate 3, and is conveyed into the contact oxidation pond through an aeration pipe network 21, micro-nano bubbles carry the sewage and biological agents to fill the whole oxidation pond, microorganisms in the microbial agents are quickly attached with a hanging film in the filler, the bubbles continuously collide with the filler in the rising process, the attached biological film in the filler is impacted by airflow and is stirred to be quickly dropped and updated, so that the biological film can keep high activity, pollutants such as organic matters, nutritive salts and the like in the sewage are continuously removed, the purification rate of the pollutants is improved, and meanwhile, the filler can also filter and adsorb harmful ions in the sewage.
Purified water flows into the subsurface flow constructed wetland from an overflow water outlet pipe 5-1 after being purified by three layers of biological fillers in a contact oxidation pond, the purified water can absorb and enrich pollutants by a plant root system in a soil layer, and then is further filtered and adsorbed by the three layers of biological fillers, meanwhile, micro-nano bubbles and microbial agents are brought by an aeration pipe 15 at the bottom, the microbes quickly attach a hanging film in the fillers to carry out secondary microbial treatment to remove organic matters and nutrient-rich substances in the water, finally, the purified water is collected at the bottom of the pond through a water collecting pipe 14 and is pumped into an ozone cabin of an ozone device 16 through a water inlet pipeline to carry out ozone sterilization treatment, and sewage is discharged into river water after being sterilized by ozone.
After the sewage ecological restoration system is used for treating the river water, the water body does not contain garbage basically, organic and inorganic pollutants are eliminated basically, nitrogen, phosphorus and the like are reduced greatly, the transparency of the water body is improved greatly, the contact oxidation pond and the undercurrent artificial wetland increase the beautiful effect of the river, and dissolved oxygen is improved greatly, so that the water quality is optimized, bacteria and viruses are eliminated, and the threat to the ecological environment is reduced.
Finally, it should be pointed out that the above-mentioned examples are only used to illustrate the technical solution of the present sewage ecological remediation system, but not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A sewage ecological restoration method is characterized in that: the method comprises the following steps:
s1, filtering the sewage by a filtering material;
s2, performing biological filtration and aeration oxidation treatment on the sewage treated by the S1;
s3, purifying the sewage treated in S2 by the subsurface flow constructed wetland plants, biologically treating and ecologically filtering;
s4, carrying out ozone sterilization treatment on the sewage treated by the S3, and discharging after the treatment is finished.
2. An ecological restoration system for sewage, which is applied to the method of claim 1, and is characterized in that: the biological filter bed, the contact oxidation pond, the undercurrent artificial wetland and the ozone device (16) are sequentially arranged along the water flow direction, an equipment box is arranged on the bank of the undercurrent artificial wetland, and the ozone device (16) is positioned in the equipment box.
3. The ecological restoration system for sewage water as claimed in claim 1, wherein: a water inlet pipe (1) with an adjusting valve is arranged above the left side of the biological filter bed, a functional ceramsite packing layer (2) is paved inside the biological filter bed, the right side of the biological filter bed is separated from the contact oxidation pond through a partition plate (4), a water outlet (4-1) is arranged at the lower part of the partition plate (4), and a liftable gate (3) is arranged on the partition plate and used for controlling the size of the water outlet (4-1).
4. The sewage ecological restoration system according to claim 1, wherein: an aeration pipe network (21) is laid at the bottom of the contact oxidation pond, a filler support is arranged above the aeration pipe network, three layers of biological fillers are laid on the filler support, the right side of the contact oxidation pond is separated from the subsurface flow constructed wetland through a separation plate (5), and an overflow water outlet pipe (5-1) is arranged at the upper part of the separation plate (5).
5. The sewage ecological restoration system according to claim 4, wherein: the biological filler paved on the filler bracket at the bottom of the contact oxidation pond is sequentially zeolite filler (6), large-particle volcanic filler (7) and ceramic particles (8) from top to bottom, and the thickness ratio of the three fillers is (2-4): 1-3): 1.
6. The sewage ecological restoration system according to claim 1, wherein: the bottom of the subsurface flow constructed wetland is provided with a water collecting pipe network (14), a filler bracket is arranged above the subsurface flow constructed wetland, three layers of fillers are laid on the filler bracket, and a layer of planting soil (9) is laid on the upper layer of the fillers and used for planting proper plants (13).
7. The sewage ecological restoration system according to claim 6, wherein: small-particle volcanic rock filler (10), gravel filler (11) and ceramsite filler (12) are sequentially laid on the filler support at the bottom of the subsurface flow constructed wetland from top to bottom, and an aeration pipe (15) is also arranged at the bottom of the filler support; the thickness ratio of the three fillers is (1-2) to (2-4) to 1.
8. The sewage ecological restoration system according to claim 1, wherein: the ozone device (16) comprises an ozone chamber and an ozone generator, a generating disc is arranged at the bottom of the ozone chamber, ozone is filled in the ozone chamber through the ozone generator, a water inlet pipeline (22) is arranged on the left side, a water outlet pipeline (19) is arranged on the right side, a water suction pump is connected to the water inlet pipeline (22), and the water inlet end is positioned at the bottom of the subsurface flow artificial wetland.
9. The sewage ecological restoration system according to claim 1, wherein: a preparation storage tank (18) is arranged in the equipment box, biological preparations can be put into the contact oxidation pond through an aeration pipeline (20), and a micro-nano aerator (17) is connected with the bottom of the contact oxidation pond and is paved with an aeration pipe network (21) and an aeration pipe (15) at the bottom of the subsurface flow constructed wetland.
10. The sewage ecological restoration system according to claim 1, wherein: the biological agent is a microbial agent and comprises nitrobacteria, denitrifying bacteria, algae-lysing bacteria, yeast, sulfurous bacteria and sulfur bacteria in the mass ratio of (1-5) to (2-10) to (0.5-2).
CN202210274282.9A 2022-03-21 2022-03-21 Sewage ecological restoration system and restoration method Pending CN114538716A (en)

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CN202210274282.9A CN114538716A (en) 2022-03-21 2022-03-21 Sewage ecological restoration system and restoration method

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Application Number Priority Date Filing Date Title
CN202210274282.9A CN114538716A (en) 2022-03-21 2022-03-21 Sewage ecological restoration system and restoration method

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CN114538716A true CN114538716A (en) 2022-05-27

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201704174U (en) * 2010-06-30 2011-01-12 唐仲湖 Strengthened undercurrent artificial wetland
CN202046969U (en) * 2011-04-02 2011-11-23 濮阳市元光科技有限公司 Wastewater treatment system combining biological contact oxidation pond and constructed wetland
CN204342622U (en) * 2014-12-31 2015-05-20 怀化市康宇环保科技有限公司 Full automatic control microkinetic distributing ecology domestic sewage processing system
CN105481206A (en) * 2016-02-05 2016-04-13 元润(北京)环保科技有限公司 In-situ ecological restoration technology integration system for black and odorous rivers and lakes and control method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201704174U (en) * 2010-06-30 2011-01-12 唐仲湖 Strengthened undercurrent artificial wetland
CN202046969U (en) * 2011-04-02 2011-11-23 濮阳市元光科技有限公司 Wastewater treatment system combining biological contact oxidation pond and constructed wetland
CN204342622U (en) * 2014-12-31 2015-05-20 怀化市康宇环保科技有限公司 Full automatic control microkinetic distributing ecology domestic sewage processing system
CN105481206A (en) * 2016-02-05 2016-04-13 元润(北京)环保科技有限公司 In-situ ecological restoration technology integration system for black and odorous rivers and lakes and control method thereof

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Application publication date: 20220527