Artificial wetland structure based on metal-loaded biomass charcoal functional filler

Abstract

The utility model belongs to the technical field of constructed wetlands, and particularly relates to a constructed wetland structure based on loaded metal biomass charcoal functional filler, which comprises a grating well, a regulating reservoir, a primary constructed wetland, a first liquid level regulating reservoir, a secondary constructed wetland and a second liquid level regulating reservoir which are sequentially arranged from a water inlet end to a water outlet end, a coarse grid is arranged in the grid well, partition plates which are arranged up and down are arranged in the regulating tank, and filler layers are arranged in the primary constructed wetland and the secondary constructed wetland; the filler layer comprises a medium soil layer, a first fine broken stone layer, a first coarse broken stone layer, a metal biochar layer, a second fine broken stone layer, a second coarse broken stone layer and a gravel layer which are sequentially arranged from top to bottom, and the filler layer further comprises an impermeable film. The artificial wetland is reasonable in design, simple in structure and convenient to process, the sewage purification and adsorption effect of the artificial wetland can be effectively improved, the sewage treatment effect is guaranteed, the service life of the artificial wetland is relatively prolonged, and the use requirements are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of artificial wetlands, and in particular relates to an artificial wetland structure based on metal-loaded biomass charcoal functional filler. Background Art

[0002] Artificial wetlands are artificially constructed sewage treatment facilities that simulate the structure and function of natural wetlands. They are composed of aquatic plants, fillers, microorganisms and water bodies. The fillers serve as the base for microorganisms to attach and the carrier of aquatic plants. They use the triple synergistic effects of physics, chemistry and biology in natural ecosystems to purify sewage. They have the characteristics of low construction cost, low energy consumption, good treatment effect, low operating cost, easy management, and beautification of the environment.

[0003] The selection of fillers is crucial to the operation of artificial wetland systems. The type of fillers will affect the reoxygenation capacity, microbial species and activity, and pollutant removal capacity of artificial wetland systems. At present, the commonly used fillers for artificial wetlands are generally coarse sand, gravel, zeolite, ceramsite, etc. This type of filler material is relatively simple, and the disadvantages are low adsorption capacity and poor adsorption. Especially for organic pollutants contained in sewage, the existing filler materials cannot adsorb them well, and at the same time, they cannot effectively purify the increasingly complex sewage water quality. The sewage treatment effect is poor, which shortens the service life of artificial wetlands to a certain extent and cannot meet the use needs. Utility Model Content

[0004] In response to the technical problems existing in the above-mentioned artificial wetland fillers and maintenance processes, the utility model proposes an artificial wetland structure based on metal-loaded biochar functional fillers with reasonable design, simple structure, and convenient processing, which can effectively improve the purification and adsorption effect of artificial wetlands on sewage, ensure the sewage treatment effect, relatively extend the service life of artificial wetlands, and meet the use needs.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is an artificial wetland structure based on metal-loaded biomass carbon functional filler, including a grid well, a regulating pool, a first-level artificial wetland, a first liquid level regulating pool, a second-level artificial wetland and a second liquid level regulating pool arranged in sequence from the water inlet end to the water outlet end, a coarse grid is arranged in the grid well, a partition arranged up and down is arranged in the regulating pool, and an obliquely arranged fine grid is arranged between the ends of the two partitions, and the first-level artificial wetland and the second-level artificial wetland are both provided with A packing layer is arranged, and the packing layer includes a medium soil layer, a first fine crushed stone layer, a first coarse crushed stone layer, a metal biochar layer, a second fine crushed stone layer, a second coarse crushed stone layer and a gravel layer arranged in sequence from top to bottom. The packing layer also includes an impermeable membrane, which is laid on the inner sides of the first-level artificial wetland and the second-level artificial wetland respectively. A horizontally arranged water distribution main pipe is arranged above the packing layer, and a horizontally arranged water collection branch pipe is arranged below the packing layer. An exhaust pipe arranged vertically is also arranged in the packing layer.

[0006] Preferably, a perforated pipe is provided on the anti-seepage membrane, the anti-seepage membrane extends out in the direction of the perforated pipe, a waterstop is provided on the outer periphery of the anti-seepage membrane, an iron wire is wound around the outer side of the waterstop, a fastening rope is also wound around the perforated pipe located outside the waterstop and the iron wire, and a concrete layer is also provided on the outer periphery of the connection between the anti-seepage membrane and the perforated pipe.

[0007] Preferably, a water inlet pipe is provided on one side of the grille well, and a connecting pipe is provided between the grille well and the regulating tank.

[0008] Preferably, the metal biochar layer is made of biochar made from reed straw and loaded with iron and manganese metal ions.

[0009] Compared with the prior art, the advantages and positive effects of the utility model are:

[0010] 1. The utility model provides an artificial wetland structure based on a metal-loaded biochar functional filler. Through the set grid well, larger suspended solids in sewage can be filtered in advance, and the water quality can be evened out by using the set regulating tank. The set filler layer not only increases the flowability of sewage, but also adsorbs organic and inorganic pollutants in sewage with the help of the set metal-loaded biochar layer, ensuring the purification effect and meeting the use requirements. The device has a reasonable design, a simple structure, and is easy to process. It can effectively improve the purification and adsorption effect of artificial wetlands on sewage, ensure the sewage treatment effect, and relatively extend the service life of artificial wetlands to meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0012] Figure 1 A front view of the internal structure of an artificial wetland structure based on metal-loaded biochar functional filler;

[0013] Figure 2 It is a side view of the internal structure of a primary artificial wetland or a secondary artificial wetland;

[0014] Figure 3 It is a schematic diagram of the installation structure of the anti-seepage membrane;

[0015] Figure 4 for Figure 3 Schematic cross-sectional view of AA in the figure;

[0016] In the above figures, 1, screen well; 1a, coarse screen; 2, regulating tank; 2a, partition; 2b, fine screen; 3, primary artificial wetland; 4, No. 1 liquid level regulating tank; 5, secondary artificial wetland; 6, No. 2 liquid level regulating tank; 7, medium soil layer; 8, first fine crushed stone layer; 9, first coarse crushed stone layer; 10, metal biochar layer; 11, second fine crushed stone layer; 12, second coarse crushed stone layer; 13, gravel layer; 14, anti-seepage membrane; 15, water distribution main pipe; 16, water collection branch pipe; 17, exhaust pipe; 18, perforated pipe; 19, water stop; 20, iron wire; 21, fastening rope; 22, concrete layer; 23, water inlet pipe; 24, connecting pipe. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0019] Examples, such as Figure 1 to Figure 4As shown, an artificial wetland structure based on metal-loaded biomass carbon functional filler includes a grid well 1, a regulating tank 2, a primary artificial wetland 3, a No. 1 liquid level regulating tank 4, a secondary artificial wetland 5 and a No. 2 liquid level regulating tank 6, which are arranged in sequence from the water inlet end to the water outlet end. A coarse grid 1a is arranged in the grid well 1 to filter large impurities in sewage to prevent them from affecting the subsequent sewage transportation process; a partition 2a arranged up and down is arranged in the regulating tank 2, and an obliquely arranged fine grid 2b is arranged between the ends of the two partitions 2a. The regulating tank 2 is used to decompose microorganisms and organic pollutants in the sewage to provide a prerequisite for sewage purification, and for the established partition 2a, it is used to circulate the sewage in an S-shaped manner, relatively Prolong the water residence time in the regulating tank 2 to ensure the decomposition effect; further, both the primary artificial wetland 3 and the secondary artificial wetland 5 are provided with a packing layer, and it needs to be further explained that: for the established packing layer, it includes a plurality of packing unit monomers filled with the packing layer, so that the primary artificial wetland 3 and the secondary artificial wetland 5 are constructed in a modular manner, which can not only improve the convenience of the construction of the artificial wetland structure and adapt to the construction site, but also greatly reduce the subsequent maintenance difficulty and save costs. At the same time, the establishment of modular packing units in the primary artificial wetland 3 and the secondary artificial wetland 5 can also control the amount of packing to a certain extent, and ensure the production cost; further The packing layer includes a medium soil layer 7, a first fine crushed stone layer 8, a first coarse crushed stone layer 9, a metal biochar layer 10, a second fine crushed stone layer 11, a second coarse crushed stone layer 12 and a gravel layer 13, which are arranged in sequence from top to bottom. The packing layer also includes an impermeable membrane 14, which is laid on the inner sides of the first-level artificial wetland 3 and the second-level artificial wetland 5 respectively. The purpose is to carry out anti-seepage treatment in the artificial wetland to ensure that the sewage effectively completes the corresponding purification work and guarantees the use demand. In the above process: with respect to the fine crushed stone layer and the coarse crushed stone layer set up in a mirror image of the metal biochar layer 10, while ensuring the stability of the artificial wetland structure, it also ensures the dredging property in the packing layer, that is, the fine crushed stone layer and the coarse crushed stone layer formed by combining different particle sizes can effectively ensure The porosity and permeability of the filler reduce the possibility of wetland blockage, and can effectively extend the service life of the filler unit to a certain extent; a water distribution main pipe 15 arranged horizontally is arranged above the filler layer, a water collection branch pipe 16 arranged horizontally is arranged below the filler layer, and a vertically arranged exhaust pipe 17 is also arranged in the filler layer. The water distribution main pipe 15 is connected to the regulating tank 2 to ensure that the sewage can be effectively transported to the primary artificial wetland 3 through the water collection branch pipe 16. The sewage after one purification is concentrated and transported to the liquid level regulating tank, and then the water in the liquid level regulating tank is transported to the secondary artificial wetland 5 by the next water distribution main pipe 15 for further purification. The wetland structure is reasonably established and has strong functionality;

[0020] In the above process: the larger suspended solids in the sewage can be filtered in advance by the set grid well 1, and the pollutants in the sewage can be decomposed by the set regulating tank 2, which provides a prerequisite for the purification of sewage and ensures the purification effect of the artificial wetland on sewage; the set filler layer not only increases the dredging property of the sewage, but also adsorbs the organic and inorganic pollutants in the sewage with the help of the set metal biochar layer 10, thereby ensuring the purification effect and meeting the use requirements; the device is reasonably designed, simple in structure, and easy to process, and can effectively improve the purification and adsorption effect of the artificial wetland on sewage, ensure the sewage treatment effect, relatively extend the service life of the artificial wetland, and meet the use requirements.

[0021] In order to ensure the stability of the anti-seepage membrane 14 and the functionality of the artificial wetland, a perforated pipe 18 is provided on the anti-seepage membrane 14, and the anti-seepage membrane 14 extends in the direction of the perforated pipe 18. A water stop belt 19 is provided on the periphery of the anti-seepage membrane 14, and an iron wire 20 is wound around the outer side of the water stop belt 19. A fastening rope 21 is also wound around the perforated pipe 18 located outside the water stop belt 19 and the iron wire 20. A concrete layer 22 is also provided on the periphery of the connection between the anti-seepage membrane 14 and the perforated pipe 18. The specific description is as follows: the specifications of the selected anti-seepage membrane 14 are two A membrane is laid, and a perforated pipe 18 is set up in the artificial wetland, and the anti-seepage membrane 14 is passed through. After the anti-seepage membrane 14 is pulled out along the perforated pipe 18 for a distance, the pulled-out front end is welded to the perforated pipe 18. For the established water stop belt 19, it is wound at a certain interval, and is reinforced with iron wire 20, and then wrapped with a rope, and finally the structure is surrounded by a concrete layer 22. While the anti-seepage treatment is done for the installation location of the components, the stability of the installation of the anti-seepage membrane 14 is also guaranteed to meet the use requirements.

[0022] In order to ensure the rationality of the equipment, a water inlet pipe 23 is provided on one side of the screen well 1, and a connecting pipe 24 is provided between the screen well 1 and the regulating tank 2. The establishment of the water inlet pipe 23 ensures the effective transportation of sewage, which is pre-treated with the help of the screen well 1. The establishment of the connecting pipe 24 can transport the water in the regulating tank 2 to the artificial wetland structure, providing convenient conditions for subsequent purification.

[0023] In order to ensure the decontamination effect of the artificial wetland, the metal biochar layer 10 uses biochar made of reed straw and loaded with iron and manganese metal ions. The biochar loaded with iron and manganese metal is filled into the packing layer of the packing unit of the artificial wetland, which can especially adsorb organic pollutants in sewage, thereby ensuring the effect of removing pollutants in the artificial wetland and meeting the use requirements.

[0024] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An artificial wetland structure based on metal-loaded biochar functional filler, characterized in that: The invention comprises a grid well, a regulating pool, a primary artificial wetland, a No. 1 liquid level regulating pool, a secondary artificial wetland and a No. 2 liquid level regulating pool, which are sequentially arranged from the water inlet end to the water outlet end. A coarse grid is arranged in the grid well, a partition arranged up and down is arranged in the regulating pool, and an obliquely arranged fine grid is arranged between the ends of the two partitions. A packing layer is arranged in both the primary artificial wetland and the secondary artificial wetland, and the packing layer comprises a medium soil layer, a first fine crushed stone layer, a first coarse crushed stone layer, a metal biochar layer, a second fine crushed stone layer, a second coarse crushed stone layer and a gravel layer, which are sequentially arranged from top to bottom. The packing layer also comprises an impermeable membrane, which is laid on the inner sides of the primary artificial wetland and the secondary artificial wetland respectively. A water distribution main arranged in a horizontal manner is arranged above the packing layer, a water collection branch pipe arranged in a horizontal manner is arranged below the packing layer, and an exhaust pipe arranged in a vertical manner is also arranged in the packing layer.

2. The artificial wetland structure based on metal-loaded biochar functional filler according to claim 1 is characterized in that: A perforated pipe is arranged on the anti-seepage membrane, and the anti-seepage membrane extends out in the direction of the perforated pipe. A waterstop is arranged on the periphery of the anti-seepage membrane, and an iron wire is wound around the outer side of the waterstop. A fastening rope is also wound around the perforated pipe located outside the waterstop and the iron wire, and a concrete layer is also arranged on the periphery of the connection between the anti-seepage membrane and the perforated pipe.

3. The artificial wetland structure based on metal-loaded biomass carbon functional filler according to claim 2 is characterized in that: A water inlet pipe is arranged on one side of the grille well, and a connecting pipe is arranged between the grille well and the regulating tank.

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