Modular horizontal subsurface flow wetland structure

Abstract

The utility model discloses a modular horizontal subsurface flow wetland structure, and belongs to the field of municipal drainage. The modular horizontal subsurface flow wetland structure comprises an integrated wetland, the integrated wetland is composed of a first gravel area, wetland plants, a second gravel area, medium-coarse sand and broken stones, the first gravel area is located on one side of the broken stones, the second gravel area is located on the other side of the broken stones, and the wetland plants are located at the upper ends of the broken stones. The utility model solves the problems that the existing traditional method can not adjust and switch between an aerobic mode and an anaerobic mode when treating wastewater, and the whole structure can not adjust the flow track of sewage by responding to the switching of the modes, and after the flow track of liquid is adjusted through the first manual gate valve, the flow track of the liquid can be adjusted through the adjustment of the electronic valve. Sewage flows into the first gravel area at different positions, and is discharged from the position of the second water pipe in the second gravel area after being in contact with gravel.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of municipal drainage, and specifically to a modular horizontal subsurface flow wetland structure. BACKGROUND

[0002] The artificial wetland technology originated in the early 20th century, and its specific forms include surface flow wetland, horizontal subsurface flow wetland, vertical subsurface flow wetland, and composite vertical flow wetland, among which the subsurface flow wetland is less affected by climate and season and can effectively prevent the breeding of mosquitoes and flies, and has been widely promoted in China.

[0003] In recent years, with the continuous deepening of the research on subsurface flow artificial wetlands, the defects such as easy clogging and poor ammonia and nitrogen removal effect have been significantly improved. However, it is found in the application process that the dissolved oxygen concentration in the subsurface flow artificial wetland is generally low, usually less than 1 mg / L, which limits the effect of the wetland on the removal of organic matter, ammonia and nitrogen, especially in the horizontal subsurface flow wetland. The traditional pre-aeration method, such as using an aerator to inject air into the water body to increase the dissolved oxygen concentration, has the problems of high energy consumption, the need for separate pretreatment device, high operation cost, and the inability to meet the continuous oxygen supply demand, and cannot adjust and switch between aerobic and anaerobic modes, and the overall structure cannot adjust the sewage flow trajectory when switching modes. SUMMARY

[0004] The utility model aims at providing a kind of modular horizontal subsurface flow wetland structure, after adjusting liquid flow trajectory by first manual gate valve, by the adjustment of electronic valve, it makes sewage flow into first gravel area with different position, and is discharged from the second water pipe position inside second gravel area after contacting gravel, solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of modular horizontal subsurface flow wetland structure, including integrated wetland, the integrated wetland is composed of first gravel area, wetland plant, second gravel area, medium coarse sand and gravel, the first gravel area is located in the side of gravel, the second gravel area is located in the other side of gravel, the wetland plant is located in the upper end of gravel, the medium coarse sand is located in the lower end of first gravel area, gravel and second gravel area, the upper and lower ends of the one side inside first gravel area are provided with first water pipe, the upper and lower ends of the other side inside second gravel area are provided with second water pipe.

[0006] Preferably, an electronic valve is installed on the first water pipe, and a first manual gate valve is installed on the pipeline after the two first water pipes are connected in parallel.

[0007] Preferably, the first water pipe and the second water pipe are both provided with through holes towards the position of gravel.

[0008] Preferably, the first water pipe and the second water pipe are sequentially provided with 24 through holes inside, and the interval between two adjacent through holes is 100mm.

[0009] Preferably, the wetland plants are composed of first Ilyeana, second Ilyeana and Zephyranthes grandiflora, the first Ilyeana is located on one side of the second Ilyeana, and the Zephyranthes grandiflora is located on the other side of the second Ilyeana.

[0010] Preferably, the second gravel area is provided with a drainage area on the other side, the upper end of the drainage area is provided with a glass steel grid cover plate, the bottom of the drainage area is provided with a drainage pipe, and a second manual gate valve is installed on the drainage pipe.

[0011] Compared with the prior art, the utility model has the beneficial effects as follows:

[0012] The integrated wetland is modularized, the earthwork excavation time is saved, the construction is simple, the replacement is convenient, in the construction site, only the covered area of the integrated wetland needs to be simply arranged, large-scale land leveling, hardening treatment or anti-seepage measures are not needed, so that the construction process of the wetland project is obviously accelerated, the first water pipe and the second water pipe are arranged on the upper and lower parts of the first gravel area and the second gravel area respectively, the water level height in the equipment can be controlled, the aerobic and anaerobic mode switching of the equipment operation is realized, and the nitrification and denitrification reaction process is controlled. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is an integrated wetland connection plane schematic view of the utility model;

[0014] Figure 2 It is an integrated wetland internal structure main view of the utility model;

[0015] Figure 3 It is a wetland plant internal structure schematic view of the utility model;

[0016] Figure 4 It is a first water pipe and second water pipe position relation schematic view of the utility model;

[0017] Figure 5 It is a through hole position relation schematic view of the utility model;

[0018] Figure 6 It is a working state view of the utility model.

[0019] In the figure: 1, glass steel grid cover plate; 2, drainage area; 3, drainage pipe; 5, wetland plant; 6, gravel; 7, medium sand; 8, first gravel area; 9, second gravel area; 10, first swordfish grass; 11, second swordfish grass; 12, reed; 13, first water pipe; 14, second water pipe; 15, through hole; 16, sewage pump; 17, first manual gate valve; 18, integrated wetland; 19, second manual gate valve; 20, electronic valve. DETAILED DESCRIPTION

[0020] The application will be further described below in combination with specific embodiments.

[0021] As shown in Figure 1 and Figure 2 , a modular horizontal subsurface flow wetland structure of the embodiment includes an integrated wetland 18, the outside of the integrated wetland 18 is provided with a first manual gate valve 17, when a plurality of integrated wetlands 18 are distributed side by side, the flow trajectory of the liquid can be directly adjusted by adjusting the corresponding first manual gate valve 17 of the integrated wetland 18, the other side of the integrated wetland 18 is provided with a second manual gate valve 19, the sewage passing through the integrated wetland 18 will be controlled by the second manual gate valve 19 when being discharged, one side of the first manual gate valve 17 is provided with a sewage pump 16, and the sewage pump 16 is in sealed connection with the first manual gate valve 17, when the sewage pump 16 extracts the liquid and transmits it towards the integrated wetland 18, the sewage pump 16 is started, and the starting of the sewage pump 16 can transmit the liquid into the integrated wetland 18 through the first manual gate valve 17;

[0022] In order to facilitate the treatment of the liquid extracted by the sewage pump 16, as shown in Figure 2 and Figure 3 , the integrated wetland 18 is composed of a first gravel area 8, a wetland plant 5, a second gravel area 9, medium sand 7 and gravel 6, the first gravel area 8 is located on one side of the gravel 6, the second gravel area 9 is located on the other side of the gravel 6, the wetland plant 5 is located at the upper end of the gravel 6, and the medium sand 7 is located at the lower end of the first gravel area 8, the gravel 6 and the second gravel area 9, after the first manual gate valve 17 is rotated to be opened, the liquid will flow into the integrated wetland 18, the liquid flowing into the inside of the integrated wetland 18 will pass through the first gravel area 8, the gravel 6 and the second gravel area 9 in turn, and will contact the root of the wetland plant 5 when passing through the gravel 6;

[0023] In addition, as shown in Figure 6As shown, in order to facilitate the adjustment of the trajectory of the liquid flow, the upper and lower ends of the inner side of the first gravel area 8 are provided with first water pipes 13, and the upper and lower ends of the inner side of the other side of the second gravel area 9 are provided with second water pipes 14, and the two first water pipes 13 are respectively provided with electronic valves 20 between the first manual gate valve 17, and the opening of the electronic valve 20 can determine the final liquid discharge position after the first manual gate valve 17 is opened, which can cope with the operation of the aerobic mode and the anaerobic mode.

[0024] In order to facilitate the discharge of the liquid and the cleaning of the drainage position, the other side of the second gravel area 9 is provided with a drainage area 2, the upper end of the drainage area 2 is provided with a glass steel grille cover plate 1, and the other side of the lower end of the drainage area 2 is provided with a drainage pipe 3, one end of the drainage pipe 3 is provided with a second manual gate valve 19.

[0025] In order to facilitate the average transmission and distribution of the transmitted liquid to the integrated wetland 18, the first water pipe 13 and the second water pipe 14 are both provided with through holes 15 transversely towards the middle position of the gravel 6, as shown in Figure 4 and Figure 5 As shown, the first water pipe 13 and the second water pipe 14 are sequentially provided with 24 through holes 15 inside, and the spacing between the adjacent two through holes 15 is 100mm.

[0026] Among them, the wetland plants 5 are composed of the first swordfish grass 10, the second swordfish grass 11 and the again flower 12, the first swordfish grass 10 is located on one side of the second swordfish grass 11, and the again flower 12 is located on the other side of the second swordfish grass 11, the liquid will be discharged after passing through the first swordfish grass 10, the second swordfish grass 11 and the again flower 12 in turn in the process of transmission, and the sewage will pass through the swordfish grass and the again flower in turn to purify the water quality, the swordfish grass is a perennial emergent plant, which likes to grow in shallow water area, and has an important role in purifying water quality, it can decompose harmful and toxic substances in water, and at the same time absorb heavy metal substances in water, so that the water source becomes more pure, which has an important role in protecting the environment, the again flower 12 is also a kind of aquatic plants with the function of purifying water quality, which has the ability to catch insects, when the sewage contacts the swordfish grass and the again flower 12 in turn, the purification ability of the two plants can work together to more effectively remove harmful substances in the sewage, including nutrient salt, heavy metal ion, organic compound, etc., so as to improve the transparency and overall quality of the water quality, in addition, they can also provide a healthy environment for the aquatic ecosystem, promote the maintenance of biological diversity, and indirectly support the natural evolution process of water quality.

[0027] Working principle: in use and when sewage is transported and treated, it is divided into aerobic mode and anaerobic mode, in aerobic mode operation, low liquid level operation mode is adopted, electronic valve 20 is used to block left upper end first water pipe 13 and right upper end second water pipe 14, sewage flows towards integrated wetland 18 after first manual gate valve 17 is opened, electronic valve 20 between left lower end first water pipe 13 inside first gravel area 8 and first manual gate valve 17 is opened, so that sewage flows from left lower end first water pipe 13 inside first gravel area 8, and finally is discharged from right lower end second water pipe 14 position inside second gravel area 9; in anaerobic mode operation, high liquid level operation mode is adopted, electronic valve 20 is used to block left lower end first water pipe 13 and right lower end second water pipe 14, sewage flows towards integrated wetland 18 after first manual gate valve 17 is opened, electronic valve 20 between left upper end first water pipe 13 inside first gravel area 8 and first manual gate valve 17 is opened, so that sewage flows from left upper end first water pipe 13 inside first gravel area 8, and finally makes sewage be discharged from right upper end second water pipe 14 position inside second gravel area 9.

[0028] It should be noted that in this document, relationship terms such as first and second are used only to differentiate one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model.

Claims

1. A modular horizontal subsurface flow wetland structure comprising an integrated wetland (18), characterized in that, The integrated wetland (18) is composed of a first gravel area (8), wetland plants (5), a second gravel area (9), medium coarse sand (7) and gravel (6), the first gravel area (8) is located on one side of the gravel (6), the second gravel area (9) is located on the other side of the gravel (6), the wetland plants (5) are located at the upper end of the gravel (6), the medium coarse sand (7) is located at the lower end of the first gravel area (8), the gravel (6) and the second gravel area (9), the upper and lower ends of the inside of the first gravel area (8) are provided with first water pipes (13), and the upper and lower ends of the other side of the inside of the second gravel area (9) are provided with second water pipes (14).

2. A modular horizontal subsurface flow wetland structure according to claim 1, characterized in that The first water pipe (13) is provided with an electronic valve (20), and the pipeline after the two first water pipes (13) are connected in parallel is provided with a first manual gate valve (17).

3. A modular horizontal subsurface flow wetland structure according to claim 2, wherein, The first water pipe (13) and the second water pipe (14) are both provided with through holes (15) towards the position of the gravel (6).

4. A modular horizontal subsurface flow wetland structure according to claim 3, wherein, The first water pipe (13) is provided with a plurality of through holes (15) in sequence, and the spacing between adjacent two through holes (15) is 100mm.

5. The modular horizontal subsurface-flow wetland structure of claim 1, wherein, The wetland plants (5) are composed of first swordfish grass (10), second swordfish grass (11) and reforce flower (12), the first swordfish grass (10) is located on one side of the second swordfish grass (11), and the reforce flower (12) is located on the other side of the second swordfish grass (11).

6. The modular horizontal subsurface-flow wetland structure of claim 1, wherein, The other side of the second gravel area (9) is provided with a drainage area (2), the upper end of the drainage area (2) is provided with a glass steel grid cover plate (1), the bottom of the drainage area (2) is provided with a drainage pipe (3), and the drainage pipe (3) is provided with a second manual gate valve (19).

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