Black and odorous water body in-situ remediation and water quality maintenance equipment

Abstract

The invention belongs to the technical field of water body pollution treatment, and discloses black and odorous water body in-situ remediation and water quality maintenance equipment which comprises a plurality of gas transmission main pipes laid in a water body. The aeration equipment is communicated with the gas transmission main pipe and is used for generating bubbles in a water body; the aquatic plant support is located in the water body and fixedly connected to the air conveying main pipe, and the aquatic plant support is located above the aeration equipment; the bottom of the artificial aquatic plant is fixedly connected to the top end of the aquatic plant support, the upper portion of the artificial aquatic plant suspends in a water body, and the artificial aquatic plant is used for attaching microorganisms. The method is few in use limiting factors, does not occupy rivers, does not affect flood discharge, is high in oxygen utilization rate, is better in microorganism enrichment growth environment, and can realize efficient treatment of black and odorous water and long-acting maintenance of water quality.

Description

Technical Field

[0001] This invention belongs to the field of water pollution control technology, and in particular relates to an equipment for in-situ remediation of black and odorous water bodies and water quality maintenance. Background Technology

[0002] Due to the increasing environmental pollution, rivers and lakes have become the main bodies of water for domestic and industrial sewage discharge as well as unorganized pollution. Although most sewage is discharged in accordance with the relevant standards, the phenomenon of the water quality of most rivers, lakes and reservoirs getting worse and worse is difficult to curb and slow down.

[0003] Existing technologies for in-situ remediation of black and odorous water bodies in rivers and lakes mostly rely on the addition of chemicals, microbial agents, and aeration. Examples include applications with application numbers 201710317496.9, 201710134860.8, 201410004734.7, 201710102748.6, and 201711018588.3. Among these, aeration-based in-situ remediation technology, a novel approach combining aeration and oxygenation with a biological contact reactor, suffers from problems such as complex structure, unscientific design of aeration equipment and artificial filler materials, lack of installation flexibility, obstruction of flood channels, limited variety of artificial filler media, and limited biofilm biomass. Practical experience has shown that in the remediation of black and odorous water bodies, installation and maintenance are difficult, the remediation cycle is long, and the results are unstable.

[0004] Source control, pollution interception, water exchange, addition of artificial bacteria or chemicals, and planting of aquatic plants are currently the mainstream technologies for the remediation of black and odorous water bodies. However, none of these technologies can establish a long-term and effective self-purification capacity for the water body. Because it is impossible to completely intercept pollution, with the influx of non-point source pollution, coupled with poor water flow and insufficient exchange capacity, the water quality can only be improved temporarily after implementation. Eutrophication soon reappears, and the water body becomes black and odorous again.

[0005] Therefore, there is an urgent need for equipment for in-situ remediation of black and odorous water bodies and water quality maintenance to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide equipment for in-situ remediation of black and odorous water bodies and water quality maintenance, so as to solve the problems existing in the prior art.

[0007] To achieve the above objectives, the present invention provides the following solution: The present invention provides equipment for in-situ remediation and water quality maintenance of black and odorous water bodies, comprising: Multiple gas transmission main pipes are laid in the water body; An aeration device, which is connected to the main air supply pipe, is used to generate bubbles in the water. Aquatic plant support, which is located in the water body and fixedly connected to the air supply main pipe, is located above the aeration device; Artificial aquatic plants, the bottom of which is fixedly connected to the top of the aquatic plant support, the upper part of which is suspended in the water, and which are used to attach microorganisms.

[0008] According to the present invention, an in-situ remediation and water quality maintenance equipment for black and odorous water bodies is provided. The aeration equipment includes an aeration hose, an air supply main pipe, and an aerator. The input end of the air supply main pipe is connected to the air supply main pipe, and the output end of the air supply main pipe and the input end of the aeration hose are respectively connected to the input end and the output end of the aerator.

[0009] According to the present invention, an in-situ remediation and water quality maintenance equipment for black and odorous water bodies is provided, wherein the aeration hose is an EPDM rubber hose with multiple aeration holes.

[0010] According to the present invention, an in-situ remediation and water quality maintenance equipment for black and odorous water bodies is provided, wherein the diameter of the EPDM rubber hose is 35mm.

[0011] According to the present invention, an in-situ remediation and water quality maintenance device for black and odorous water bodies is provided, wherein the diameter of the air bubbles is less than 2 mm.

[0012] According to the present invention, an in-situ remediation and water quality maintenance device for black and odorous water bodies is provided, wherein the artificial aquatic plants are semi-soft fillers.

[0013] According to the present invention, an in-situ remediation and water quality maintenance device for black and odorous water bodies is provided, wherein the height of the artificial aquatic plants is 1 / 2 to 2 / 3 of the water depth.

[0014] The equipment for in-situ remediation of black and odorous water bodies and water quality maintenance provided by the present invention also includes a counterweight module filled inside the aeration hose.

[0015] According to the present invention, an in-situ remediation and water quality maintenance equipment for black and odorous water bodies is provided, wherein the aerator is a variable frequency aerator.

[0016] According to the present invention, an in-situ remediation and water quality maintenance device for black and odorous water bodies is provided, wherein a PE support pipe is installed inside the EPDM rubber tube.

[0017] Compared with the prior art, the present invention has the following advantages and technical effects: This invention provides an in-situ remediation and water quality maintenance system for black and odorous water bodies. It utilizes an aeration device and artificial aquatic plants to construct an integrated biological contact oxidation system for pollutant purification. The aeration device oxygenates the water body and simultaneously supplies oxygen to the artificial aquatic plants, forming a stable biological contact oxidation system. Biological contact oxidation has advantages such as large biomass, short treatment time, strong adaptability to load changes, convenient maintenance and management, and high nitrogen and phosphorus removal efficiency, making it a mainstream and commonly used technology for treating low-concentration, slightly polluted water. During the reaction process, under enhanced aeration, microorganisms that absorb and decompose pollutants attach to the surface of the artificial aquatic plants. As these microorganisms grow and reproduce, a biofilm of a certain thickness gradually forms, generally 1.5-2.0 mm. From the surface to 1.5 mm, aerobic bacteria dominate, followed by facultative anaerobic and anaerobic bacteria below 1.5 mm, creating favorable conditions for the decomposition and removal of COD, TN, and TP. The biofilm surface is covered with a rich biological community, an ecosystem composed of bacteria, filamentous fungi, fungi, protozoa, metazoa, etc. It can adsorb and decompose organic pollutants, algae, and suspended solids in the water, attracting filter-feeding animals to inhabit, grow, and reproduce, thus creating favorable conditions for the construction of a healthy aquatic ecosystem. This invention is easy to install, flexible to operate, widely applicable, highly efficient, and ecologically safe. It is suitable for both water bodies that have achieved complete pollution interception and those that cannot. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; The components include: 1. main gas supply pipe; 2. aeration equipment; 3. artificial aquatic plants; and 4. aquatic plant support. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Reference Figure 1 This invention provides equipment for in-situ remediation and water quality maintenance of black and odorous water bodies, comprising: Multiple gas transmission main pipes 1 are laid in the water body; Aeration device 2 is connected to the air supply main pipe 1 and is used to generate bubbles in the water. Aquatic plant support 4 is located in the water body and is fixedly connected to the air supply main pipe 1. Aquatic plant support 4 is located above the aeration device 2. Artificial aquatic plant 3, the bottom of artificial aquatic plant 3 is fixedly connected to the top of aquatic plant support 4, the upper part of artificial aquatic plant 3 is suspended in the water, artificial aquatic plant 3 is used to attach microorganisms.

[0023] In one embodiment of the present invention, an integrated pollutant purification and treatment system using aeration equipment 2 and artificial aquatic plants 3 is constructed. Aeration equipment 2 oxygenates the water and also supplies oxygen to the artificial aquatic plants 3, forming a stable biological contact oxidation system. Biological contact oxidation has advantages such as large biomass, short treatment time, strong adaptability to load changes, convenient maintenance and management, and high nitrogen and phosphorus removal efficiency, making it a mainstream and commonly used technology for treating low-concentration, slightly polluted water. During the reaction process, under enhanced aeration, microorganisms that absorb and decompose pollutants attach to the surface of the artificial aquatic plants 3. As the microorganisms grow and reproduce, a biofilm of a certain thickness gradually forms, generally 1.5-2.0 mm. From the surface to 1.5 mm, aerobic bacteria dominate; below 1.5 mm, facultative anaerobic bacteria and anaerobic bacteria follow in sequence, creating favorable conditions for the decomposition and removal of COD, TN, and TP. The surface of a biofilm is covered with a rich biophase, which is an ecosystem composed of bacteria, filamentous fungi, fungi, protozoa, metazoa, etc. It can adsorb and decompose organic pollutants, algae and suspended solids in the water, attract filter feeders to inhabit, grow and reproduce, and create favorable conditions for the construction of a healthy aquatic ecosystem.

[0024] As an optional implementation, the aeration device 2 includes an aeration hose, an air supply main pipe, and an aerator. The input end of the air supply main pipe is connected to the air supply main pipe 1, and the output end of the air supply main pipe and the input end of the aeration hose are respectively connected to the input end and the output end of the aerator.

[0025] In one embodiment of the present invention, the aeration device 2 includes an aeration hose, an air supply main pipe and an aerator, and the aerator is used to perform aeration operation to form bubbles in the water.

[0026] As an optional implementation, the aeration hose is an EPDM rubber hose with multiple aeration holes.

[0027] In one embodiment of the present invention, the aeration hose is made of EPDM rubber, which has a wider range of applications, and micropores are opened on the hose for aeration.

[0028] As an optional implementation, the diameter of the EPDM rubber hose is 35mm.

[0029] In one embodiment of the present invention, the diameter of the EPDM rubber tube is preferably 35 mm.

[0030] As an alternative implementation, the diameter of the bubble is less than 2 mm.

[0031] In one embodiment of the present invention, the bubble diameter is less than 2 mm, and the direction and number of openings are adjusted according to the needs of the water body or bottom sediment to be treated.

[0032] As an optional implementation, artificial aquatic plants 3 are semi-soft fillers.

[0033] In one embodiment of the present invention, the artificial aquatic plant 3 is a semi-soft filler that has been artificially modified. Its good surface hydrophilicity is more conducive to biofilm formation and the attachment of characteristic microorganisms. Under aeration, the biofilm on the surface of the artificial aquatic plant is effectively maintained and continuously renewed during the three-phase scouring process of water flow and air. The activity of the microbial population is directly related to the efficiency of pollutant removal in the water.

[0034] As an optional implementation, the height of the artificial aquatic plant 3 is 1 / 2 to 2 / 3 of the water depth.

[0035] In one embodiment of the present invention, depending on the depth of the water body being treated, the height of the artificial aquatic plants generally accounts for 1 / 2 to 2 / 3 of the water depth, and a certain height of free air diffusion space is maintained between the upper layer of the aquatic plants and the water surface.

[0036] As an optional implementation, a counterweight module is also included, which is filled inside the aeration hose.

[0037] In one embodiment of the present invention, the counterweight module is preferably a counterweight packing material, which relies on the weight of the packing material in the aeration equipment support pipe and the aquatic plant support as a counterweight, and the combined system can be safely submerged to the bottom of the water.

[0038] As an optional implementation method, the aerator is a variable frequency aerator.

[0039] In one embodiment of the present invention, the gas supply main pipe 1 is laid from the bottom of the water along the shore and connected to an aerator on the shore. The aerator is equipped with a frequency converter, which can automatically control the aeration intensity and aeration time according to the dissolved oxygen concentration in the water.

[0040] As an optional implementation method, a PE support pipe is installed inside the EPDM rubber hose.

[0041] In one embodiment of the present invention, a PE pipe is used as a support inside the aeration hose.

[0042] In one embodiment of the present invention, the installation method is selected according to the water conditions, and the installation methods include submersible and floating.

[0043] For river water with a certain flow rate, a submerged installation method is adopted. First, based on the water flow velocity and riverbed conditions, it is determined whether the combined system needs reinforcement. The artificial aquatic plants 3 mainly sway along the water flow direction, and in conjunction with the installation positions of the bottom aeration device 2 and the artificial aquatic plants 3, it is ensured that most air bubbles pass through the artificial aquatic plants.

[0044] For lakes, reservoirs, and other bodies of water with poor flow, a floating installation method is chosen, facilitating system deployment, inspection, and maintenance. The combined system can be suspended in the water and sway from side to side during aeration, or it can be fixed to the bottom. The system installation gaps can be enlarged as needed to maximize the deployment area, covering more than 60% of the total area. With a one-time ballast installation, no further reinforcement is required.

[0045] In one embodiment of the present invention, for the sewage outlet, the density of the packing can be increased, the packing area and aeration volume can be expanded, and if necessary, facilities to prevent the rapid diffusion of sewage can be added to achieve effective treatment of the discharged sewage.

[0046] In one embodiment of the present invention, for water bodies containing special pollutants or with special requirements for water quality, it can be used in combination with immobilized microorganisms or special bacteria.

[0047] This invention can be directly submerged in water after installation on the surface without further fixing, foundations, or support structures. The submerged aeration system minimizes river channel obstruction and is largely unaffected by water flow and floods. It allows for targeted installation at uncontrolled sewage outlets, directly treating domestic sewage, initial rainwater runoff, and other surface runoff. Compared to existing underwater aeration equipment, this invention combines enhanced aeration with artificial aquatic plant cultivation, promoting microbial enrichment and growth, while offering better treatment results without increasing operating costs. The tubular aeration equipment is submerged directly after surface installation, preserving the riverbed shape and not being limited by water depth, facilitating maintenance and repair. Being submerged, the aeration facilities fully utilize water depth for oxygenation, resulting in high air utilization.

[0048] This invention provides an artificial enhanced in-situ water body remediation technology for water bodies with inadequate or difficult-to-effective interception of pollutants, as well as areas with heavy initial rainwater pollution. It also has a good effect on maintaining the water quality of the remediated water body. With the matching design, the removal of pollutants in the water body can be more effectively controlled.

[0049] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0050] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An equipment for in-situ remediation and water quality maintenance of black and odorous water bodies, characterized in that, include: Multiple gas transmission main pipes (1) are laid in the water body; An aeration device (2) is connected to the gas supply pipe (1) and is used to generate bubbles in the water. Aquatic plant support (4), the aquatic plant support (4) is located in the water body and is fixedly connected to the air supply main pipe (1), the aquatic plant support (4) is located above the aeration device (2); Artificial aquatic plant (3), the bottom of which is fixedly connected to the top of the aquatic plant support (4), the upper part of which is suspended in the water, and which is used to attach microorganisms.

2. The equipment for in-situ remediation and water quality maintenance of black and odorous water bodies according to claim 1, characterized in that: The aeration device (2) includes an aeration hose, an air supply main pipe and an aerator. The input end of the air supply main pipe is connected to the air supply main pipe (1), and the output end of the air supply main pipe and the input end of the aeration hose are respectively connected to the input end and the output end of the aerator.

3. The equipment for in-situ remediation and water quality maintenance of black and odorous water bodies according to claim 2, characterized in that: The aeration hose is an EPDM rubber hose with multiple aeration holes.

4. The equipment for in-situ remediation and water quality maintenance of black and odorous water bodies according to claim 3, characterized in that: The diameter of the EPDM rubber hose is 35mm.

5. The equipment for in-situ remediation and water quality maintenance of black and odorous water bodies according to claim 1, characterized in that: The diameter of the bubble is less than 2 mm.

6. The equipment for in-situ remediation and water quality maintenance of black and odorous water bodies according to claim 1, characterized in that: The artificial aquatic plants (3) are semi-soft fillers.

7. The equipment for in-situ remediation and water quality maintenance of black and odorous water bodies according to claim 1, characterized in that: The height of the artificial aquatic plants (3) is 1 / 2 to 2 / 3 of the water depth.

8. The equipment for in-situ remediation and water quality maintenance of black and odorous water bodies according to claim 2, characterized in that: It also includes a counterweight module, which is filled inside the aeration hose.

9. The equipment for in-situ remediation and water quality maintenance of black and odorous water bodies according to claim 2, characterized in that: The aerator is a variable frequency aerator.

10. The equipment for in-situ remediation and water quality maintenance of black and odorous water bodies according to claim 2, characterized in that: The EPDM rubber hose has an internal PE support pipe.

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