CN212198900U

CN212198900U - Artificial wetland system for strengthening water eutrophication treatment

Info

Publication number: CN212198900U
Application number: CN201922004421.2U
Authority: CN
Inventors: 李青艳; 冯海春; 刘海容
Original assignee: Shengjingguoxin Beijing Ecological Garden Co ltd
Current assignee: Shengjingguoxin Beijing Ecological Garden Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-12-22
Anticipated expiration: 2029-11-19

Abstract

The utility model discloses an artificial wetland system for strengthening water eutrophication treatment, which comprises an aeration tank, a deep water tank and a slow flow tank, wherein the aeration tank, the deep water tank and the slow flow tank are sequentially communicated through pipelines; the deep water pond comprises a plurality of treatment ponds which are connected in series. The aeration tank can promote the degradation of organic matters and improve the oxygen content of the water body. The deep water tank can be used for degrading and filtering sewage. The slow flow pool can improve the activity of water and further reduce the content of mineral substances in the water. By arranging the device, the oxygen content of the river water can be greatly increased, and the degradation speed of organic matters in the river water is increased; through setting up this device, can alleviate the living environment of aquatic animal, improve aquatic organisms's vitality and quantity, further reduce the breed of alga.

Description

Artificial wetland system for strengthening water eutrophication treatment

Technical Field

The utility model relates to a sewage treatment field especially relates to an artificial wetland system of intensive treatment water eutrophication.

Background

With the development of economy, the water pollution condition is more and more serious, particularly domestic sewage, water body organic matters are too much, and water body eutrophication is realized.

The organic substances contained in water are various, including animal and vegetable fibers, fats and oils, saccharides, dyes, organic acids, various organic synthetic industrial products, organic raw materials, and the like. At present, the quantitative values of various components are difficult to be respectively measured, and the content of organic matters, such as CoD, BOD and the like, or certain organic pollutants, such as phenols, oils, benzene series, organophosphorus pesticides and the like, can be indirectly represented by the equivalent oxygen demand of the organic matters in water. The organic substances existing in the water bodies have the common characteristic that dissolved oxygen in water needs to be consumed to carry out biological oxidative decomposition, so that oxygen deficiency in the water is caused. Meanwhile, putrefactive fermentation can occur, so that bacteria grow, water quality is deteriorated, and a water body is damaged; organic contamination of industrial water also reduces product quality and deteriorates water quality.

The water eutrophication refers to the phenomenon of water quality pollution caused by excessive content of nutrient salts such as N, P in the water. The essence of the method is that the species distribution of the water ecosystem is unbalanced and a single species grows excessively due to the unbalanced input and output of nutritive salt, so that the flow of substances and energy of the system is damaged, and the whole water ecosystem gradually goes to death.

In surface fresh water systems, phosphate is often the limiting factor for plant growth, while in seawater systems it is often ammonia nitrogen and nitrate that limits plant growth and overall production. Eutrophic substances, often nutrients of limited content in these water systems, for example, in normal freshwater systems the phosphorus content is usually limited, so that an increase in phosphate leads to overgrowth of the plants, whereas in seawater systems phosphorus is absent, while the nitrogen content is limited, so that the addition of nitrogen-containing pollutants eliminates this limiting factor and overgrowth of the plants occurs. Domestic sewage, wastewater from industries such as chemical fertilizers and foods, and farmland drainage contain a large amount of nitrogen, phosphorus and other inorganic salts. After the natural water body receives the wastewater, the nutrient substances in the water are increased, the autotrophic organisms are promoted to grow vigorously, particularly, the individual number of blue algae and red algae is increased rapidly, and other kinds of algae are reduced gradually. Algae in the water body mainly comprises diatom and green algae, the appearance of a large amount of blue algae is a sign of eutrophication, and the algae finally becomes mainly comprising the blue algae along with the development of the eutrophication. The algae can be rapidly propagated and the growth period is short. Algae and other plankton are decomposed by aerobic microorganisms after death, and dissolved oxygen in water is continuously consumed, or the algae and other plankton are decomposed by anaerobic microorganisms, and gases such as hydrogen sulfide are continuously generated, so that the water quality is deteriorated from two aspects, and a large amount of fishes and other aquatic organisms are killed. During the decay process of algae and other plankton residues, a large amount of nutrients such as nitrogen, phosphorus and the like are released into water for the utilization of new generation of algae and other organisms. Therefore, the eutrophic water body is difficult to self-purify and restore to a normal state even if the source of external nutrient substances is cut off.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a utility model aim at: aiming at the problems, the artificial wetland system for strengthening the water eutrophication is provided, so that the problems of excessive organic matters in the water, eutrophication of the water and insufficient oxygen content in the water are solved.

The utility model adopts the technical scheme as follows:

an artificial wetland system for strengthening water eutrophication treatment comprises an aeration tank, a deep water tank and a slow flow tank, wherein the aeration tank, the deep water tank and the slow flow tank are sequentially communicated through pipelines; the deep water pond comprises a plurality of treatment ponds which are connected in series. The aeration tank can promote the degradation of organic matters and improve the oxygen content of the water body. The deep water tank can be used for degrading and filtering sewage. The slow flow pool can improve the activity of water and further reduce the content of mineral substances in the water.

Furthermore, the utility model discloses a preferred structure of the artificial wetland system for strengthening the eutrophication of the water body, the lower part of the treatment pool is provided with a plurality of layers of supporting frames, and the supporting frames form a water containing cavity at the lower part of the treatment pool; the top of the supporting frame is provided with an isolation net; and a plurality of goose warmer stones are arranged at the upper part of the isolation net.

Further, a sandstone layer is arranged above the goose warmer stone; a planting layer is arranged above the gravel layer, and aquatic weeds are planted on the planting layer.

Further, the deep water pool comprises a first treatment pool, a second treatment pool, a third treatment pool and a fourth treatment pool; the first treatment pool, the second treatment pool, the third treatment pool and the fourth treatment pool are communicated in sequence.

Further, the bottom of the first treatment tank is connected with an aeration tank, the top of the first treatment tank is communicated with the top of the second treatment tank through a communication pipe, the bottom of the second treatment tank is communicated with the bottom of the third treatment tank through a communication pipe, and the top of the third treatment tank is communicated with the top of the fourth treatment tank through a communication pipe.

Further, an air jet is arranged at the bottom of the aeration tank; the bottom of the aeration tank is connected with a sewage source through a pipeline, and a water inlet valve is arranged on the pipeline connecting the aeration tank and the sewage source.

Further, the flow slowing tank comprises a tank body, a waterproof material is arranged on the inner surface of the tank body, and a sludge layer is arranged at the bottom of the flow slowing tank; underwater plants and emergent aquatic plants are planted on the surface of the sludge layer.

Furthermore, the other end of the slow flow pool is provided with a water outlet, and a drain valve is arranged at the water outlet.

Furthermore, the water depth of the slow flow pool is 20-80CM, and aquatic organisms are put into the sludge layer.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. by arranging the device, the oxygen content of the water body can be greatly improved, and the degradation speed of organic matters in river water is improved;

2. through setting up this device, can alleviate the living environment of animal in the water, improve aquatic organisms's vitality and quantity, further reduce the breed of alga.

Drawings

FIG. 1 is a schematic structural view of the present invention;

the labels in the figure are: 1 is a water inlet valve, 2 is an aeration tank, 3 is an air jet, 4 is a deep water tank, 5 is a first treatment tank, 6 is goose warm stone, 7 is a second treatment tank, 8 is a sand stone layer, 9 is a third treatment tank, 10 is a planting layer, 11 is a fourth treatment tank, 12 is a support frame, 13 is a clear water pipe, 14 is a slow flow tank, 15 is a sludge layer, 16 is an emergent aquatic plant, 17 is a submarine plant, 18 is a water outlet, 19 is a water discharge valve, 20 is a float grass, and 21 is a communicating pipe.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the utility model discloses an artificial wetland system for strengthening water eutrophication, which comprises an aeration tank 2, a deep water tank 4 and a slow flow tank 14, wherein the aeration tank 2, the deep water tank 4 and the slow flow tank 14 are sequentially communicated through pipelines; the deep water tank 4 comprises a plurality of treatment tanks which are connected in series.

The deep water pool 4 comprises a first treatment pool 5, a second treatment pool 7, a third treatment pool 9 and a fourth treatment pool 11; the first treatment tank 5, the second treatment tank 7, the third treatment tank 9 and the fourth treatment tank 11 are communicated in sequence. The bottom of the first treatment tank 5 is connected with the aeration tank 2, the top of the first treatment tank 5 is communicated with the top of the second treatment tank 7 through a communication pipe 21, the bottom of the second treatment tank 7 is communicated with the bottom of the third treatment tank 9 through a communication pipe 21, and the top of the third treatment tank 9 is communicated with the top of the fourth treatment tank 11 through a communication pipe 21.

The lower part of the treatment tank is provided with a plurality of layers of supporting frames 12, and the supporting frames 12 form a water containing cavity at the lower part of the treatment tank; an isolation net is arranged at the top of the supporting frame 12; the upper part of the isolation net is provided with a plurality of goose warmer stones 6.

A sandstone layer 8 is arranged above the goose warmer stone 6; a planting layer 10 is arranged above the gravel layer 8, and aquatic weeds 20 are planted on the planting layer 10.

The bottom of the aeration tank 2 is provided with an air jet 3; the bottom of the aeration tank 2 is connected with a sewage source through a pipeline, and a water inlet valve 1 is arranged on the pipeline connecting the aeration tank 2 and the sewage source.

The slow flow tank 14 comprises a tank body, the inner surface of the tank body is provided with a waterproof material, and the bottom of the slow flow tank 14 is provided with a sludge layer 15; underwater plants 17 and emergent aquatic plants 16 are planted on the surface of the sludge layer 15. The other end of the slow flow pool 14 is provided with a water outlet 18, and a drain valve 19 is arranged at the water outlet 18. The water depth of the slow flow tank 14 is 20-80CM, and aquatic organisms are put into the sludge layer 15.

In the specific operation process, sewage enters the bottom of an aeration tank 2 through a water inlet valve 1; the inlet valve 1 is used to regulate the rate of water inflow. After the sewage enters the water inlet valve 1, the aeration device at the bottom of the water inlet valve 1 is started, and the aeration device sprays air out of the air outlet 3. The bubbles slowly rise upwards in the sewage to dissolve oxygen in the air into the sewage, so that the degradation of the sewage is accelerated.

The sewage then enters the bottom of the first treatment tank 5 through a pipe. The sewage slowly flows upwards along the supporting frame 12, passes through the goose warmer stone 6, the sand layer 8 and the planting layer 10 and finally reaches the uppermost layer of the first treatment tank 5. The aquatic weeds 20 can not only solidify the planting layer 10, but also form a net structure to filter sewage. Since the water level rises slowly, the sewage is slowly settled in the water containing chamber 3. The impurities in the filtered water become few, and the method is completely suitable for plant growth and the survival of aquatic organisms.

Then the water enters the top of the second treatment tank 7 from the top of the first treatment tank 5 through the communicating pipe 21, and the water follows the planting layer 10, the sand layer 8, the goose warmer stone 6 and finally enters the water sump. The water enters the bottom of the third treating tank 9 from the top of the second treating tank 7 through the communicating pipe 21. The sewage slowly flows upwards along the supporting frame 12, passes through the goose warmer stone 6, the sand layer 8 and the planting layer 10 and finally reaches the uppermost layer of the third treatment tank 9. Then the water enters the top of the fourth treatment tank 11 from the top of the third treatment tank 9 through the communicating pipe 21, and the water follows the planting layer 10, the sand layer 8, the goose warmer stone 6 and finally enters the water sump. After multiple times of filtration, the water is changed into clear water.

Clear water enters the slow flow tank 14 through the clear water pipe 13, and a large number of aquatic plants and emergent aquatic plants 16 are planted in the slow flow tank 14 to accelerate the absorption of mineral components in water, so that the purification of water quality is realized. The final treated water is discharged through the water outlet 18. The drain valve 19 is used to regulate the flow rate of water. The water interacts with plants and animals in the slow flow basin 14, completely achieving a benign development of the water body. And the oxygen content in the water is greatly improved. The organic matter is completely consumed.

Therefore, by arranging the artificial wetland ecosystem, the oxygen content of the water body can be greatly improved, and the degradation speed of organic matters in river water is improved; and can relieve the living environment of animals in the water body, improve the activity and the quantity of aquatic organisms and further reduce the propagation of algae.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An artificial wetland system for strengthening water eutrophication, which is characterized in that: the device comprises an aeration tank (2), a deep water tank (4) and a slow flow tank (14), wherein the aeration tank (2), the deep water tank (4) and the slow flow tank (14) are sequentially communicated through pipelines; the deep water pool (4) comprises a plurality of treatment pools which are connected in series.

2. The artificial wetland system for the enhanced treatment of water eutrophication of claim 1, which is characterized in that: the lower part of the treatment tank is provided with a plurality of layers of supporting frames (12), and the supporting frames (12) form a water containing cavity at the lower part of the treatment tank; the top of the supporting frame (12) is provided with an isolation net; the upper part of the isolation net is provided with a plurality of goose warming stones (6).

3. The artificial wetland system for the enhanced treatment of water eutrophication of claim 2, which is characterized in that: a gravel layer (8) is arranged above the goose warmer stone (6); a planting layer (10) is arranged above the gravel layer (8), and aquatic weeds (20) are planted on the planting layer (10).

4. The artificial wetland system for the enhanced treatment of water eutrophication according to any one of claims 1 to 3, wherein: the deep water pool (4) comprises a first treatment pool (5), a second treatment pool (7), a third treatment pool (9) and a fourth treatment pool (11); the first treatment pool (5), the second treatment pool (7), the third treatment pool (9) and the fourth treatment pool (11) are communicated in sequence.

5. The artificial wetland system for the enhanced treatment of water eutrophication of claim 4, wherein: the bottom of the first treatment tank (5) is connected with the aeration tank (2), the top of the first treatment tank (5) is communicated with the top of the second treatment tank (7) through a communication pipe (21), the bottom of the second treatment tank (7) is communicated with the bottom of the third treatment tank (9) through a communication pipe (21), and the top of the third treatment tank (9) is communicated with the top of the fourth treatment tank (11) through a communication pipe (21).

6. The artificial wetland system for the enhanced treatment of water eutrophication of claim 1, which is characterized in that: an air jet (3) is arranged at the bottom of the aeration tank (2); the bottom of the aeration tank (2) is connected with a sewage source through a pipeline, and a water inlet valve (1) is arranged on the pipeline connecting the aeration tank (2) and the sewage source.

7. The artificial wetland system for the enhanced treatment of water eutrophication of claim 1, which is characterized in that: the slow flow tank (14) comprises a tank body, the inner surface of the tank body is provided with a waterproof material, and the bottom of the slow flow tank (14) is provided with a sludge layer (15); underwater plants (17) and emergent aquatic plants (16) are planted on the surface of the sludge layer (15).

8. The artificial wetland system for the enhanced treatment of water eutrophication of claim 7, wherein: the other end of the slow flow pool (14) is provided with a water outlet (18), and a drain valve (19) is arranged at the water outlet (18).

9. The artificial wetland system for the enhanced treatment of water eutrophication of claim 8, wherein: the water depth of the slow flow tank (14) is 20-80CM, and aquatic organisms are put into the sludge layer (15).