Up-flow algal bloom treatment device

Abstract

The utility model belongs to the technical field of algal bloom treatment, and discloses an up-flow algal bloom treatment device which comprises a shell, the interior of the shell is hollow, a water flow inlet is formed in the lower end of the shell, a water flow outlet is formed in the upper end of the shell, and an aerator, a cutting material layer and a stirrer are arranged in the shell from bottom to top. The cutting material layer comprises a hollow container and a cutting single body arranged in the container. The device has the function of a water body exchanger, so that the illumination effect of algae is greatly weakened; and the cutting material layer can enhance the cutting effect of the aerator and the stirrer on the water body in the shell, and the algae gathered into pieces are scattered into single or small algae pieces, so that the damage force of the device on the algae body structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water bloom treatment, and particularly relates to an up-flow algae water bloom treatment device. Background Technique

[0002] Algae water bloom not only pollutes water bodies but also threatens human health, and its algal toxin hazards have received wide attention. Currently, the technologies for treating algae water bloom are mainly divided into three categories: physical, chemical, and biological.

[0003] In physical methods, although manual salvage can quickly reduce algae, the treatment scope is limited, and it may accelerate water eutrophication. Hydraulic regulation inhibits algae by adjusting water flow, but the engineering cost is high, and the environmental impact needs to be carefully evaluated. The ultrasonic method is highly efficient and energy-saving, can destroy key components of algae, is easy to operate and environmentally friendly, but its application is limited by the action range and energy consumption, and it may affect aquatic organisms. The ultraviolet method has the advantages of broad-spectrum sterilization, high treatment efficiency, environmental protection and no pollution, but its penetration power is limited, the effect on turbid water bodies is not good, and it has no continuous disinfection ability. Aeration and oxygenation can increase the dissolved oxygen in water bodies and inhibit algae, but it requires continuous energy supply, has a high operating cost, and may sometimes accelerate the aggregation of algae.

[0004] In chemical methods, adding algicides has a quick effect and is suitable for emergencies, but it may cause secondary pollution, affect water quality safety, may reduce the treatment effect in the long term, and have a negative impact on the ecosystem. The flocculation precipitation method makes algae precipitate by adding flocculants, but the selection and dosage of flocculants need to be strictly controlled, and the subsequent treatment is complex.

[0005] In biological methods, biological manipulation inhibits algae by regulating the aquatic biological community, has little impact on the environment, and helps to restore the balance of the ecosystem, but the effect is slow and requires high-level management. Ecological restoration solves water eutrophication by planting aquatic plants and releasing beneficial microorganisms, etc., improves the self-purification ability, but has a high cost, takes a long time, and may face uncertain factors such as climate change and biological invasion.

[0006] In summary, the existing algae water bloom treatment technologies have their own advantages and disadvantages. Although physical methods can directly reduce algae pollution, cost and environmental impact are limiting factors; chemical methods have a quick effect, but may have a negative impact on water bodies and the ecosystem; biological methods can fundamentally solve the problem, but the effect is slow and the cost is high. Content of the Utility Model

[0007] The utility model aims to solve at least to a certain extent the above technical problems. For this reason, the purpose of the utility model is to provide an up-flow algae water bloom treatment device.

[0008] The technical solution adopted by the utility model is as follows:

[0009] An upflow algal bloom treatment device includes a housing. The interior of the housing is hollow. A water inlet is provided at the lower end of the housing, and a water outlet is provided at the upper end of the housing. An aerator, a cutting material layer, and an agitator are arranged in the housing from bottom to top. The cutting material layer includes a hollowed-out container and cutting monomers arranged in the container.

[0010] Preferably, it further includes a draft tube. The housing is arranged at the central position of the draft tube, and an annular space between the inner wall of the draft tube and the outer wall of the housing forms a negative pressure channel. A cutting net is arranged in the middle of the negative pressure channel. The outer side of the cutting net is connected to the inner wall of the draft tube, and the inner side of the cutting net is connected to the outer wall of the housing. The middle of the negative pressure channel is narrow and the two ends are wide.

[0011] Preferably, the inner wall of the housing is evenly distributed with vertically spiral guide grooves, and the guide rods of the cutting material layer are slidably installed in the guide grooves.

[0012] The beneficial effects of the present utility model are as follows:

[0013] The upflow algal bloom treatment device provided by the present utility model has the function of a water exchanger, greatly weakening the light effect on algae; the cutting material layer can increase the cutting effect of the aerator and the agitator on the water body in the housing, breaking up the algae aggregated into sheets into single or small pieces of algae, and improving the damage strength of the device to the algal structure. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the upflow algal bloom treatment device of the present utility model.

[0015] Figure 2 It is a schematic diagram of the cutting monomer of the present utility model.

[0016] Figure 3 It is a cross-sectional view of the cutting strip of the present utility model.

[0017] In the figure: 1 - draft tube; 2 - housing; 3 - water inlet; 4 - water outlet; 5 - aerator; 6 - cutting material layer; 7 - agitator; 8 - guide groove; 9 - guide rod; 10 - cutting monomer; 11 - cutting net. Specific Embodiments

[0018] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described by referring to the drawings here are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components.

[0020] As Figure 1 and Figure 2 shown, an upflow algal bloom treatment device of this embodiment includes a draft tube 1 and a housing 2. The draft tube 1 and the housing 2 have the same height. The draft tube 1 is a cylindrical structure that penetrates up and down, and the housing 2 is a hollow structure inside. The whole housing 2 is arranged at the central position of the draft tube 1. The annular space between the inner wall of the draft tube 1 and the outer wall of the housing 2 forms a negative pressure channel. The middle part of the negative pressure channel is narrow and the two ends are wide, so that the water flow velocity is the fastest when the water passes through the middle part of the negative pressure channel. A cutting net 11 is arranged in the middle part of the negative pressure channel. The outer side of the cutting net 11 is connected to the inner wall of the draft tube 1, and the inner side of the cutting net 11 is connected to the outer wall of the housing 2. The cutting net 11 serves two purposes. One is to connect the draft tube 1 and the housing 2, and the other is to cut the algae in the water passing through the negative pressure channel. The cutting net 11 includes a plurality of cutting strips arranged in a staggered manner, and the cross-section of the cutting strips is as Figure 3 shown.

[0021] A water inlet 3 is opened at the lower end of the housing 2, and a water outlet 4 is opened at the upper end of the housing 2. Both the water inlet 3 and the water outlet 4 are uniformly distributed small holes, and the small holes are communicated with the internal space of the housing 2. During treatment, the water flows from bottom to top, flows in from the lower water inlet 3 and flows out from the upper water outlet 4. The height of the housing 2 is generally greater than 60 cm and is wholly immersed in the water body. The upper end of the housing 2 is generally more than 10 cm away from the water surface.

[0022] An aerator 5, a cutting material layer 6 and a stirrer 7 are arranged in the housing 2 from bottom to top, and the aerator 5 and the stirrer 7 are fixedly installed in the housing 2. When the aerator 5 works, it can generate a large number of bubbles, forming a negative pressure inside the housing 2, allowing the water body to enter from the water inlet 3 and flow out from the water outlet 4, exchanging the water body near the bottom of the housing 2 from the lower layer to the upper layer, and the negative pressure generated near the bottom of the housing 2 exchanges the water body containing algae distributed in the upper layer to the lower layer of the water body through the negative pressure channel. The water body exchanger function of this device greatly weakens the light exposure of the algae.

[0023] The stirrer 7 is a blade-type stirrer. When the stirrer 7 works, it can generate a strong stirring turbulence, causing a certain change in the algal structure entering the housing 2 and affecting the aggregation of the algae, thereby reducing the algal bloom. Specifically, the stirrer 7 stirs at a certain rotation speed and time, causing a certain agitation of the water body in the device, and the generated turbulence and eddy current destroy the algal structure in the device and the algal clusters.

[0024] The cutting material layer 6 includes a hollowed-out container and a plurality of cutting monomers 10 filled in the container. The cutting monomers 10 are made of plastic and are shaped as Figure 2 shown. Its surface has multiple ridgelines to enhance its cutting ability. The cutting material layer 6 can increase the cutting effect of the aerator 5 and the agitator 7 on the water body in the housing 2, break up the aggregated algae into single or small pieces of algae, and improve the damage strength of the device to the algal structure.

[0025] To prevent algae from adhering to the surface of the cutting monomers 10 and weakening their cutting ability, the cutting material layer 6 is floatingly installed in the housing 2. Specifically, the inner wall of the housing 2 is evenly distributed with vertically spiral guide grooves 8, and the guide rods 9 of the cutting material layer 6 are slidably installed in the guide grooves 8. The guide rods 9 are provided on the outer wall of the container of the cutting material layer 6. When the aerator 5 and the agitator 7 are working, the agitation turbulence generated by the water body in the housing 2 can drive the guide rods 9 of the cutting material layer 6 to float up and down along the guide grooves 8, so that the cutting monomers 10 keep moving up and down, making it not easy for algae to adhere to their surfaces.

[0026] In summary, the upflow algal bloom treatment device can change the algal living environment and destroy the algal structure. Under the negative pressure effect, the water body containing algal bloom exchanges the algal layer on the upper layer of the water body to the lower layer of the water body (more than 80 cm), greatly weakening the light effect on the algae and changing the algal living environment, thereby reducing the reproduction and growth of algae. During this process, when the aerator 5 works, a large number of bubbles can be generated, forming a negative pressure in the housing 2, allowing the water body to enter from the water inlet 3 and flow out from the water outlet 4. The water body is cut inside the cutting material layer 6; then when the agitator 7 works, a strong agitation turbulence can be generated to further break up the algal structure after passing through the cutting material layer 6; at the same time, the negative pressure generated near the bottom of the housing 2 exchanges the water body containing algae distributed on the upper layer to the lower layer of the water body through the negative pressure channel, and the cutting net 11 cuts the algae in the water body passing through the negative pressure channel.

[0027] The present invention is not limited to the above optional embodiments. Anyone can obtain other various forms of products under the inspiration of the present invention. However, no matter what changes are made in its shape or structure, as long as the technical solutions fall within the scope defined by the claims of the present invention, they all fall within the protection scope of the present invention.

Claims

1. An upflow algal bloom treatment device, characterized in that: It includes a housing (2) with a hollow interior. A water inlet (3) is provided at the lower end of the housing (2), and a water outlet (4) is provided at the upper end of the housing (2). An aerator (5), a cutting material layer (6), and a stirrer (7) are arranged in the housing (2) from bottom to top. The cutting material layer (6) includes a container arranged in a hollow manner and cutting monomers (10) arranged in the container.

2. The upflow algal bloom treatment device according to claim 1, characterized in that: It further includes a draft tube (1). The housing (2) is arranged at the central position of the draft tube (1), and an annular space between the inner wall of the draft tube (1) and the outer wall of the housing (2) forms a negative pressure channel.

3. The up-flow algal bloom treatment device according to claim 2, characterized in that: A cutting mesh (11) is provided in the middle of the negative pressure channel. The outer side of the cutting mesh (11) is connected to the inner wall of the draft tube (1), and the inner side of the cutting mesh (11) is connected to the outer wall of the housing (2).

4. The upflow algal bloom treatment device according to claim 2, characterized in that: The middle of the negative pressure channel is narrow and the two ends are wide.

5. The upflow algal bloom treatment device according to claim 1, characterized in that: Vertical spiral guide grooves (8) are evenly distributed on the inner wall of the housing (2), and guide rods (9) of the cutting material layer (6) are slidably installed in the guide grooves (8).

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