A bionic in-situ restoration device for water body sediment

Abstract

The present invention discloses a bionic in-situ sediment remediation device, which includes a control system, an air inlet pipe, a power unit, a first roller brush and a purification chamber. An inlet is provided at the bottom of the front end of the purification chamber, and the bottom is open as a particle outlet. A second roller brush is provided below the particle outlet. The interior of the purification chamber is divided into an upper biological purification area and a lower sedimentation area by a horizontally arranged sieve mesh. The biological purification area is filled with packing materials, and a gas outlet is provided at the top. The first roller brush is arranged at the front end of the inlet, and the power unit is fixedly connected to the purification chamber. The power unit includes a driving wheel. The control system is electrically connected to the driving wheel, the first roller brush and the second roller brush respectively. The outlet of the air inlet pipe is communicated with a plurality of air diffusion holes, and the air diffusion holes are arranged on the surface of the first roller brush. The present invention utilizes the bionics principle to imitate scraping benthic animals, can realize the whole process of underwater in-situ treatment, avoid the external transportation and transfer of sediments, improve the treatment efficiency and reduce the energy consumption and cost.

Description

Technical Field

[0001] The present invention belongs to the field of eutrophic water body treatment and ecological restoration, and particularly relates to a bionic in-situ restoration device for sediment Background Art

[0002] In the later stage of eutrophic water body treatment, external pollution has been effectively controlled, and internal pollution has become the main factor for the outbreak of cyanobacterial blooms and the impact on water quality compliance. The internal pollution of water bodies mainly comes from sediment deposits. Affected by the long-term historical load accumulation of sediment, such as sewage discharge, atmospheric deposition, surface runoff injection, and the decomposition of aquatic biological residues, pollutants in the sediment gradually accumulate. Under certain conditions, the organic matter in these pollutants provides energy for the growth of microorganisms. The metabolic activities of microorganisms consume oxygen in deep water and release nutrients such as nitrogen and phosphorus, causing the water body to be oxygen-deficient and the nutrient level to rise; the sediment also provides a suitable environment and nutrients for overwintering algal cells, becoming the seed source for algal blooms in summer and autumn; and a large number of extremely fine organic particles in the sediment can be suspended with a small force and settle slowly, affecting the light transmittance of the water body for a long time, making the organic matter produced by the photosynthesis of submerged plants insufficient to compensate for the consumption of their respiration and leading to their death, resulting in the water body turning from a grass-type clear water steady state to an algae-type turbid water steady state, with serious ecological degradation and loss of service functions.

[0003] In view of the causes of lake internal pollution, the commonly used physical methods in engineering treatment are the covering method and the dredging method. For shallow lakes, adding a new covering layer may raise the lake bed and affect the water environment capacity, and dredging may bring secondary pollution. Since most of the sediment is harmless sediment, the content of pollutants such as nitrogen and phosphorus accounts for about a few per thousand of the total. In order to separate the sediment from the pollutants, existing sediment disposal equipment often adds external chemical agents during the sediment elution disposal process and transports the disposed mud residue to the shore. Due to the oil pressure drive of the elution ship for the equipment, it has low efficiency, a risk of oil leakage, as well as congenital design defects and technical limitations, and has not effectively played a role in river and lake treatment. Summary of the Invention

[0004] In view of the above problems of the prior art, the present invention provides a bionic in-situ restoration device for sediment, which can separate the light and highly organic components in the sediment from the sediment with a large specific gravity and large particle size, and form inert organic residues and fine particle sediment from the light and highly organic components in the sediment, and form coarse particle inert sediment covering the mud-water interface from the sediment components with a large specific gravity and large particle size, preventing the fine bottom particles from rising and forming a new sediment stable layer at the bottom of the water.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A bionic in-situ restoration device for sediment, comprising a control system, an air inlet pipe, a power unit, a first roller brush, and a purification chamber

[0007] At the bottom of the front end of the purification chamber, there is an inlet. The bottom of the purification chamber is open as the particle outlet of the purification chamber, and a second roller brush is arranged below the particle outlet.

[0008] The interior of the purification chamber is separated into a biological purification area above and a sedimentation area below by a horizontally arranged sieve mesh. The biological purification area is filled with packing materials, and a gas outlet is arranged at the top of the biological purification area.

[0009] The first roller brush is arranged at the front end of the inlet.

[0010] The power unit is fixedly connected to the purification chamber. The power unit includes a driving wheel.

[0011] The control system is electrically connected to the driving wheel, the first roller brush, and the second roller brush respectively.

[0012] The outlet of the air inlet pipe is communicated with a plurality of aeration holes, and the aeration holes are arranged on the surface of the first roller brush.

[0013] The in-situ bioremediation device for benthic mud disturbs the surface benthic mud through the first roller brush with high rotational speed at the front end. The gas delivered through the air inlet pipe enters the biological oxidation chamber along with the benthic mud disturbed by the first roller brush, forming a mixture of suspended particles and gas. In the purification chamber, the light high-organic components in the mixture move upward through the sieve mesh under continuous disturbance, and the benthic mud with a large specific gravity and large particle size is intercepted by the sieve mesh, gradually settling in the sedimentation area and returning to the benthic mud surface through the particle outlet to form a new covering layer.

[0014] Microorganisms in the benthic mud adhere to the packing materials to form a biofilm, and the light high-organic components entering the biological purification area are decomposed by the biofilm, which is beneficial to better purification.

[0015] Furthermore, the driving wheel is a universal wheel.

[0016] Furthermore, the driving wheel is fixedly connected in a housing with an open bottom, and the housing is fixedly connected to the purification chamber. Setting a housing for the driving wheel can reduce the disturbance of the driving wheel to the benthic mud during the forward movement, and avoid the resuspension of the benthic mud outside the device environment.

[0017] Furthermore, a front baffle is arranged at the front end of the first roller brush. The baffle can prevent the first roller brush from disturbing the benthic mud at its front end, so as to reduce the degree of resuspension of the benthic mud outside the device environment.

[0018] Furthermore, an arc-shaped mud guard is arranged above the first roller brush.

[0019] Furthermore, a grille is provided at the inlet. Inside the purification chamber, a deflector is provided above the inlet, and the top end of the deflector inclines towards the rear end of the purification chamber. The deflector can guide the flow direction of the mixture and form a water flow circulation inside the chamber. The grille can filter out substances such as stones and withered branches.

[0020] Furthermore, side baffles are provided on the left and right sides of the area where the second roller brush is located; preferably, the side baffles are in contact with the bottom mud. The side baffles can prevent the passive wheel from causing excessive disturbance to the bottom mud during rotation. Contact with the bottom mud can further reduce the possibility of disturbance.

[0021] Furthermore, a rear baffle is provided at the bottom of the rear end of the purification chamber, and the rear baffle is in contact with the bottom mud. The rear baffle can assist in guiding and covering the particles that have not fully settled on the surface of the new covering layer.

[0022] Furthermore, the rear baffle or the side baffle is soft, and the rear baffle or the side baffle partially covers the surface of the bottom mud.

[0023] Furthermore, the rear baffle or the side baffle is made of silica gel material.

[0024] Furthermore, the rotation speed of the first roller brush is higher than that of the second roller brush.

[0025] Furthermore, the mesh number of the sieve is 200 meshes. The light components pass through the sieve along with the water flow and are biodegraded above, while separating the biological membrane filler above from the lower part.

[0026] Furthermore, bristles are vertically connected to the surface of the first roller brush, and the bristles are made of hard nylon material. The hard nylon bristles can effectively absorb the surface polluted bottom mud, and together with the air holes on the surface of the first roller brush, can supply oxygen to the purification chamber and provide part of the power for the peripheral circulation of the air chamber.

[0027] Furthermore, a filter screen is provided at the gas outlet.

[0028] Furthermore, the gas outlet is connected to above the water surface through a trachea. The top of the purification chamber is connected to above the water surface through a trachea, and the filter screen provided at the gas outlet can ensure the air flow and prevent the diffusion of suspended sludge.

[0029] The power part of the bottom mud bionic in-situ repair device is controlled by a control system to connect to the driving wheel to travel underwater, and the driving wheel drags the purification chamber behind to move.

[0030] The beneficial effects of the present invention are as follows

[0031] The present invention utilizes the bionics principle to imitate the process of a scraping benthic animal (snail) walking and feeding on the surface of sediment. Similar to humans, scraping snails also have a mouth, teeth, a stomach, and an intestine. Their mouths are composed of very tiny teeth called a radula, which can scrape off organic matter such as food like a file. The high-speed first roller brush developed by imitating the mouth of the snail has bristles that imitate the radula of the snail. While rolling forward, it elutes the surface contaminated sediment from the sediment to make it in a suspended state and enter the biological oxidation chamber to participate in the degradation cycle. Different from the human stomach that undertakes the digestion function, the stomach of a scraping snail is a sorting facility. The required nutrients are sent for digestion, and the unnecessary substances are discharged out of the body without digestion. By imitating the stomach and intestine of the snail, a sieve is set in the biological oxidation chamber to filter out the heavy components that do not need to be decomposed. The light components enter the upper part with the water flow and are further decomposed by microorganisms. The heavy components and the decomposed light components reach the bottom surface of the biological oxidation chamber and, with the rotation of the low-speed second roller brush, re-cover the sediment as a new layer.

[0032] The present invention precisely oxygenates and extracts the surface sediment through a roller brush, separates the light and heavy components through a sieve, the light components are decomposed by microorganisms, and the heavy components are covered in-situ, achieving the improvement of sediment properties and in-situ stabilization without adding chemicals. Moreover, the equipment is equipped with an environmentally safe power system and flexible baffles, which can reduce the potential risks of leakage pollution of underwater mechanical equipment and the escape of sediment pollutants. This device can realize the whole-process underwater in-situ treatment, avoid sediment transportation, greatly improve the treatment efficiency, and reduce energy consumption and costs.

[0033] The present invention can realize the whole-process underwater in-situ treatment, avoid the external transportation and transfer of sediment, improve the treatment efficiency, and reduce energy consumption and costs.

[0034] The present invention adopts the in-situ aeration biological oxidation chamber technology based on physical and biological principles, without adding chemicals, improves the efficiency of sediment pollution treatment, and realizes the improvement of sediment properties and in-situ stabilization.

[0035] Compared with the prior art, the present invention provides a bionic in-situ repair equipment for water body sediment. The present invention adopts physical and biological means to imitate the digestion and walking modes of scraping snails, develops a new type of bionic in-situ control equipment for sediment pollution, realizes the whole-process underwater in-situ treatment, avoids sediment transportation, greatly improves the treatment efficiency, and reduces energy consumption and costs. It integrates the aeration biological oxidation chamber technology based on physical and biological principles, does not add chemicals, and realizes the improvement of sediment properties and the in-situ stabilization of pollutants. The device of the present invention adopts an environmentally safe power system and flexible baffles to reduce the potential risks of leakage of underwater mechanical equipment and the escape of sediment pollutants. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1It is a schematic structural diagram of the bionic in-situ sediment remediation device. Among them, 1 is a universal wheel, 2 and 3 are air inlet pipes, 4 is a front baffle, 5 is a first roller brush, 6 is a grille, 7 is a flow guide plate, 8 is a filler, 9 is a gas outlet, 10 is a screen, 11 is a sedimentation area, 12 is a second roller brush, and 13 is a rear baffle.

[0037] Figure 2 It is a schematic structural diagram of the first roller brush. Among them, 14 is an air vent hole, and 15 is a hard nylon brush. Embodiment

[0038] Example

[0039] As Figure 1-2 A bionic in-situ sediment remediation device as shown, including a control system, an air inlet pipe, a power unit, a first roller brush and a purification chamber. An inlet is provided at the bottom of the front end of the purification chamber. The bottom of the purification chamber is open as the particle outlet of the purification chamber. A second roller brush is provided below the particle outlet. The interior of the purification chamber is separated by a horizontally arranged screen into a biological purification area above and a sedimentation area below. The biological purification area is filled with a filler. A gas outlet is provided at the top of the biological purification area. The first roller brush is arranged at the front end of the inlet. The power unit is fixedly connected to the purification chamber. The power unit includes a driving wheel. The control system is electrically connected to the driving wheel, the first roller brush and the second roller brush respectively. The outlet of the air inlet pipe communicates with a plurality of air vent holes, and the air vent holes are arranged on the surface of the first roller brush.

[0040] The bionic in-situ sediment remediation device disturbs the surface sediment through the first roller brush with high rotation speed at the front end. The gas delivered through the air inlet pipe enters the biological oxidation chamber along with the sediment disturbed by the first roller brush, forming a mixture of suspended particles and gas. In the purification chamber, the light and highly organic components in the mixture move upward through the screen under continuous disturbance. The sediment with a large specific gravity and large particle size is intercepted by the screen, gradually settles in the sedimentation area and returns to the sediment surface through the particle outlet, forming a new covering layer.

[0041] Microorganisms in the sediment attach to the filler to form a biofilm, and the light and highly organic components entering the biological purification area are decomposed by the biofilm, which is beneficial for better purification.

[0042] The driving wheel is a universal wheel.

[0043] The driving wheel is fixedly connected in a housing with an open bottom, and the housing is fixedly connected to the purification chamber. Setting a housing for the driving wheel can reduce the disturbance of the driving wheel to the sediment during forward movement, and avoid the resuspension of the sediment outside the device environment.

[0044] A front baffle is provided at the front end of the first drum brush. The baffle can prevent the first drum brush from disturbing the bottom mud at its front end, so as to reduce the resuspension degree of the bottom mud outside the device environment.

[0045] An arc-shaped mud baffle is provided above the first drum brush.

[0046] A grille is provided at the inlet. Inside the purification chamber, a flow guide plate is provided above the inlet, and the top end of the flow guide plate is inclined towards the rear end of the purification chamber. The flow guide plate can guide the flow direction of the mixture and form a water flow circulation in the chamber body. The grille can filter out substances such as stones and withered branches.

[0047] Side baffles are provided on the left and right sides of the area where the second drum brush is located; preferably, the side baffles are in contact with the bottom mud. The side baffles can prevent the passive wheel from causing excessive disturbance to the bottom mud during rotation. Contact with the bottom mud can further reduce the possibility of disturbance.

[0048] A rear baffle is provided at the bottom of the rear end of the purification chamber, and the rear baffle is in contact with the bottom mud. The rear baffle can assist in guiding and covering the particles that have not been completely settled on the surface of the new covering layer.

[0049] The rear baffle or the side baffle is soft, and the rear baffle or the side baffle partially covers the surface of the bottom mud.

[0050] The rear baffle or the side baffle is made of silica gel material.

[0051] The rotation speed of the first drum brush is higher than that of the second drum brush.

[0052] The mesh number of the sieve is 200 meshes. The light components pass through the sieve along with the water flow and are biodegraded above. At the same time, the biological film filler above is separated from the lower part.

[0053] Brush hairs are vertically connected to the surface of the first drum brush, and the brush hairs are made of hard nylon material. The hard nylon brush hairs can effectively absorb the polluted bottom mud on the surface layer. Together with the air holes on the surface of the first drum brush, they can supply oxygen to the purification chamber and provide part of the power for the peripheral circulation in the air chamber.

[0054] A filter screen is provided at the gas outlet.

[0055] The gas outlet is connected to the water surface above through a trachea. The top of the purification chamber is connected to the water surface above through a trachea. The filter screen provided at the gas outlet can ensure the air flow and prevent the diffusion of suspended sludge.

[0056] The power unit of the in-situ bioremediation device for bottom mud is controlled by a control system to connect to the driving wheel to travel underwater, and the driving wheel drags the purification chamber behind to move.

[0057] During operation, set according to the equipment's elution time of 3 minutes, mud surface walking speed of 4 m / min, and hydraulic retention time of 4 hours. One such equipment can wash the mud surface by approximately 3,840 m per day when working 8 hours a day. 2 , reducing the total phosphorus by 244 kg.

Claims

1. A bionic in-situ remediation device for sediment, characterized in that It includes a control system, an intake pipe, a power unit, a first roller brush and a purification chamber. At the bottom of the front end of the purification chamber, there is an inlet. The bottom opening of the purification chamber serves as the particle outlet of the purification chamber. Below the particle outlet, there is a second roller brush. The interior of the purification chamber is separated by a horizontally arranged screen into a biological purification area above and a sedimentation area below. The biological purification area is filled with packing. At the top of the biological purification area, there is a gas outlet. The first roller brush is arranged at the front end of the inlet. The power unit is fixedly connected to the purification chamber. The power unit includes a driving wheel. The control system is electrically connected to the driving wheel, the first roller brush and the second roller brush respectively. The outlet of the intake pipe is communicated with a number of air holes. The air holes are arranged on the surface of the first roller brush.

2. The in-situ bionic sediment remediation device according to claim 1, wherein The driving wheel is fixedly connected in a housing with an open bottom. The housing is fixedly connected to the purification chamber.

3. The bionic in-situ sediment remediation device according to claim 1, wherein At the front end of the first roller brush, there is a front baffle. At the upper part of the first roller brush, there is an arc-shaped mud guard.

4. The in-situ bionic repair device for sediment according to claim 1, wherein At the inlet, there is a grille. Inside the purification chamber, above the inlet, there is a deflector. The top end of the deflector inclines towards the rear end of the purification chamber.

5. The in-situ bionic sediment remediation device according to claim 1, characterized in that, On the left and right sides of the area where the second roller brush is located, there are side baffles. At the bottom of the rear end of the purification chamber, there is a rear baffle.

6. The in-situ bionic sediment remediation device according to claim 5, characterized in that The side baffle or the rear baffle is in contact with the bottom mud.

7. The bionic in-situ sediment remediation device according to claim 6, characterized in that The rear baffle or the side baffle is soft. The rear baffle or the side baffle partially covers the surface of the bottom mud.

8. The in-situ remediation device for sediment bionic according to claim 1, characterized in that, The mesh number of the screen is 200 mesh.

9. The in-situ bionic sediment remediation device according to claim 1, characterized in that, On the surface of the first roller brush, bristles are vertically connected. The bristles are made of hard nylon material.

10. The in-situ bionic sediment remediation device according to claim 1, characterized in that, At the gas outlet, there is a filter screen.

Images