Photocatalytic biological rotating disc processor suitable for black and odorous water body

Abstract

The utility model discloses a photocatalytic biological rotating disc processor suitable for black and odorous water, which comprises a support, a biological rotating disc mechanism, a first cleaning mechanism and a second cleaning mechanism, and the biological rotating disc mechanism comprises a rotating disc shaft, a plurality of first discs and a plurality of second discs rotatably arranged on the rotating disc shaft, and a rotating disc driving motor in transmission connection with the rotating disc shaft, the first disc and the second disc are arranged at intervals, titanium dioxide photocatalysts are loaded on the two sides of the first disc, and microorganism biofilm culturing areas are arranged on the two sides of the second disc. According to the invention, photocatalysis, biodegradation and the solar photovoltaic panel are combined, organic pollutants in the black and odorous water body can be effectively treated, and energy consumption is reduced by using solar energy.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of black and odorous water treatment, and particularly relates to a photocatalytic biological rotating disc processor suitable for black and odorous water. BACKGROUND

[0002] Black and odorous water treatment has always been a difficulty and focus in the field of environmental protection. At present, although a variety of technologies have been applied to the treatment of black and odorous water, there are still some significant defects. The existing black and odorous water treatment technologies, such as traditional chemical oxidation and physical methods, often have deficiencies in treatment effect, operation cost, operation convenience and sustainability, etc. For example, although the chemical oxidation method can rapidly degrade organic matter, it may cause secondary pollution and has high operation cost; physical methods such as adsorption and filtration are easily affected by water quality fluctuations and have unstable treatment effect.

[0003] The photocatalytic biological rotating disc technology, as a new type of treatment method combining the advantages of photocatalysis and biological rotating disc, has shown great potential in treating black and odorous water. However, during long-term operation, the biofilm on the rotating disc will age, reducing the activity of microorganisms and leading to a decrease in treatment efficiency. At present, the biofilm is usually removed by water shear force and discharged with sewage into the sedimentation tank, but this method takes a long time and has general effect. In view of this, it is necessary to study a photocatalytic biological rotating disc processor suitable for black and odorous water. SUMMARY

[0004] To solve the problems of the prior art, the present application aims to provide a photocatalytic biological rotating disc processor suitable for black and odorous water, which combines photocatalysis, biodegradation and solar photovoltaic panels, can effectively treat organic pollutants in black and odorous water, and simultaneously reduces energy consumption by using solar energy.

[0005] To achieve the above-mentioned objectives, the present application adopts the following technical solutions:

[0006] The photocatalytic biological rotating disc processor suitable for black and odorous water comprises a support, a biological rotating disc mechanism, a first cleaning mechanism and a second cleaning mechanism. The biological rotating disc mechanism comprises a rotating disc shaft, a plurality of first disc pieces and a plurality of second disc pieces rotatably arranged on the rotating disc shaft, and a rotating disc drive motor connected to the rotating disc shaft. The first disc pieces and the second disc pieces are arranged at intervals. Both sides of the first disc pieces are loaded with titanium dioxide photocatalyst. Both sides of the second disc pieces are provided with microbial biofilm areas. The first cleaning mechanism comprises a plurality of cleaning blocks and a driving assembly for driving the cleaning blocks to move. The bottom of each cleaning block is provided with a slot matched with the second disc piece. First brushes are arranged on the inner walls of both sides of the slot. When the first cleaning mechanism is in a cleaning working state, the top of the second disc piece is inserted into the slot of the cleaning block, and the rotating disc drive motor drives the rotating disc shaft to rotate, so as to drive the second disc piece to rotate between the two first brushes.

[0007] Preferably, the aforementioned driving assembly comprises a rotating shaft, L-shaped moving rods rotatably connected to two sides of the rotating shaft, and a driving motor connected to the rotating shaft, the cleaning block is fixedly connected to the bottom of the rotating shaft, and the driving motor drives the rotating shaft to rotate to drive the rotation of the cleaning block.

[0008] Preferably, the outer side of the aforementioned L-shaped moving rod is slidably connected to the inner side wall of the support through a sliding assembly to drive the up-down movement of the first cleaning mechanism.

[0009] Preferably, the aforementioned second cleaning mechanism comprises a horizontal rod fixed to the upper part of the support and a plurality of cleaning plates matched with the cleaning block and vertically fixed to the bottom of the horizontal rod, and the two sides of each cleaning plate are provided with a second brush.

[0010] Preferably, when the aforementioned second cleaning mechanism is in a cleaning working state, the cleaning plate is inserted into the slot of the cleaning block, and the sliding assembly drives the cleaning block to move up and down to realize the cleaning of the first brush.

[0011] Preferably, the top of the aforementioned support is provided with a solar photovoltaic panel and a lighting mechanism.

[0012] Preferably, the aforementioned titanium dioxide photocatalyst is N-doped titanium dioxide nanotube.

[0013] The present application has the advantages of:

[0014] (1) The present application combines photocatalysis, biodegradation and solar photovoltaic panel, can effectively treat organic pollutants in black and odorous water body, at the same time, uses solar energy to reduce energy consumption, has high practical value and popularization prospect; the titanium dioxide photocatalyst loaded on the first disc has stable performance, strong adhesion and can be reused, etc., improves the degradation efficiency of organic pollutants and expands the response range of the system to visible light;

[0015] (2) The present application cleans the aged biofilm and accumulated impurities on the two sides of the second disc through the first cleaning mechanism to maintain the efficient operation of the bio-disc and prolong the service life; the first brush on the first cleaning mechanism can be cleaned through the second cleaning mechanism, which avoids the influence of impurities adhered to the first brush on its work, is convenient to operate and has good cleaning effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the bio-disc mechanism in the present application;

[0017] Figure 2 is a structural schematic view of the present application;

[0018] Figure 3 is a schematic view of the first cleaning mechanism in the present application in a working state;

[0019] Figure 4 is the schematic diagram of the second cleaning mechanism in the working state in the present application.

[0020] The meaning of the reference signs in the drawing: 1, support, 2, rotating disc shaft, 3, first disc, 4, second disc, 5, cleaning block, 501, slot, 502, first brush, 6, rotating shaft, 7, L-shaped moving rod, 8, driving motor, 9, cross rod, 10, cleaning plate, 1001, second brush, 11, solar photovoltaic panel. DETAILED DESCRIPTION

[0021] The present application will be specifically introduced below in combination with the drawings and specific examples.

[0022] Reference Figure 1 and Figure 2 A photocatalytic biological rotating disc processor suitable for black and odorous water bodies, comprising a support 1, a biological rotating disc mechanism, a first cleaning mechanism and a second cleaning mechanism, the biological rotating disc mechanism comprising a rotating disc shaft 2, a plurality of first discs 3 and a plurality of second discs 4 rotatably arranged on the rotating disc shaft 2, and a rotating disc driving motor in transmission connection with the rotating disc shaft 2, the first discs 3 and the second discs 4 being arranged at intervals with each other, both sides of the first disc 3 being loaded with titanium dioxide photocatalyst, and both sides of the second disc 4 being provided with a microbial biofilm area.

[0023] The biological rotating disc is made of corrosion-resistant, high-strength and economical and practical materials such as polyethylene, polypropylene or stainless steel to construct the structure of the rotating disc; it is composed of a plurality of circular discs which are installed on a horizontal shaft, 30% of the discs being underwater and 70% of the area being in contact with air.

[0024] The discs are specially treated to have a rough and uneven surface structure, which is beneficial to the loading of photocatalyst and the formation of microbial biofilm, and can efficiently treat the black and odorous water bodies through the photocatalytic effect of titanium dioxide and microorganisms. When the rotating disc shaft 2 rotates, the first discs 3 and the second discs 4 are immersed in the black and odorous water bodies, and the microorganisms form a biofilm on the surface of the second discs 4 to remove organic matter through adsorption and metabolic action. At the same time, part of the second rotating disc is exposed to air to ensure that the biofilm can obtain the necessary oxygen for aerobic decomposition, and the first discs 3 loaded with titanium dioxide are irradiated by light, and the titanium dioxide absorbs light energy to generate electron-hole pairs. These highly active electrons and holes can react with water molecules or oxygen to generate strong oxidizing hydroxyl radicals. The hydroxyl radicals can oxidize the organic pollutants in the black and odorous water bodies to decompose them into harmless small molecular substances such as water and carbon dioxide, thereby purifying the black and odorous water bodies.

[0025] The photocatalytic material selected for the photocatalytic unit is a titanium dioxide variant, namely N-doped titanium dioxide nanotubes. The electrolyte used in anodic oxidation is doped with N or S elements, and the N-doped titanium dioxide nanotubes produced thereby have a photocatalytic wavelength range extending from ultraviolet to blue light or even green light. The titanium dioxide nanotubes produced by anodic oxidation or gel method with the introduction of trace elements N or S have a photocatalytic effect in the visible light range. The surface of the photocatalytic unit is coated with an antifouling coating to reduce the accumulation of dust and biofilm and improve the long-term operation efficiency. The N-doped titanium dioxide nanotubes are plated on the biological turntable disc, and compared with the traditional biological turntable system without photocatalytic material, the removal rates of COD, TN and TP in black and odorous water are increased by more than 40%, 25% and 5% respectively after one month of process operation.

[0026] The first cleaning mechanism includes a plurality of cleaning blocks 5 and a driving assembly for driving the cleaning blocks 5 to move. The bottom of each cleaning block 5 is provided with a slotted groove 501 matched with the second disc 4, and first brushes 502 are arranged on the inner walls of both sides of the slotted groove 501. Referring to Figure 3 When the first cleaning mechanism is in a cleaning working state, the top of the second disc 4 is inserted into the slotted groove 501 of the cleaning block 5, and the turntable driving motor 8 drives the rotation of the turntable shaft 2 to drive the rotation of the second disc 4 between the two first brushes 502. The driving assembly includes a rotating shaft 6, L-shaped moving rods 7 rotatably connected to both sides of the rotating shaft 6, and a driving motor 8 connected to the rotating shaft 6. The cleaning block 5 is fixedly connected to the bottom of the rotating shaft 6, and the driving motor 8 drives the rotation of the rotating shaft 6 to drive the rotation of the cleaning block 5. The outer side of the L-shaped moving rod 7 is slidably connected to the inner side wall of the support 1 through a sliding assembly to drive the up-and-down movement of the first cleaning mechanism. The sliding assembly can be a common sliding block, sliding groove and sliding motor, which is a common technical means in the prior art, and therefore will not be described in detail here.

[0027] The second cleaning mechanism includes a cross rod 9 fixed to the upper part of the support 1 and a plurality of cleaning plates 10 matched with the cleaning blocks 5 vertically fixed to the bottom of the cross rod 9. Second brushes 1001 are arranged on both sides of the cleaning plate 10. Referring to Figure 4 When the second cleaning mechanism is in a cleaning working state, the cleaning plate 10 is inserted into the slotted groove 501 of the cleaning block 5, and the sliding assembly drives the up-and-down movement of the cleaning block 5 to realize the cleaning of the first brushes 502.

[0028] The top of the support 1 is provided with a solar photovoltaic panel 11 and a lighting mechanism. The solar photovoltaic panel 11 is used for converting solar energy into electric energy for electronic equipment, and is installed above the black and odorous water treatment system to maximize the reception of sunlight, and can maintain the use of the equipment in the absence of sunlight. The solar photovoltaic panel 11 selects a high-efficiency monocrystalline silicon solar photovoltaic panel 11 to ensure that solar energy can be maximally converted under different light conditions. The photovoltaic panel is installed above the biological rotating disc to form an angle of 45° to maximize the reception of sunlight. A light aluminum alloy support 1 is used to fix the photovoltaic panel, which ensures the stability of the structure and facilitates the adjustment of the angle to adapt to seasonal changes in sunlight. The photovoltaic panel not only provides power for the black and odorous water treatment system, but also provides necessary ultraviolet light irradiation for the titanium dioxide photocatalytic reaction at night or on rainy days, thereby enhancing the photocatalytic effect.

[0029] In order to better illustrate the utility model, the working process is specifically explained as follows:

[0030] The first disc 3 and the second disc 4 rotate with the rotating disc shaft 2, the disc is immersed in the black and odorous water, and the microorganisms form a biofilm on the surface of the second disc 4, and the organic matter is removed through adsorption and metabolism. At the same time, part of the second disc 4 is exposed to the air to ensure that the biofilm can obtain the necessary oxygen for aerobic decomposition, and the first disc 3 loaded with titanium dioxide is irradiated by light, and the titanium dioxide absorbs light energy to generate electron-hole pairs, and reacts with organic pollutants in the black and odorous water to purify the black and odorous water.

[0031] When the second disc 4 has aged biofilm and more impurities, the sliding assembly is opened, the cleaning block 5 is driven to move downward to the top of the second disc 4 and is inserted into the slot 501 of the cleaning block 5, the second disc 4 continues to rotate slowly, and the first brush 502 can clean the aged biofilm and impurities on the second disc 4. After cleaning, the first cleaning mechanism rises to the initial position. When the first brush 502 has more impurities, the motor drives the cleaning block 5 to rotate 180°, the cleaning block 5 moves upward to the cleaning plate 10 and is inserted into the slot 501 of the cleaning block 5, and the cleaning block 5 moves up and down in a small range, which drives the friction between the second brush 1001 and the first brush 502, thereby realizing the cleaning of the first brush 502.

[0032] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the above examples do not limit the present application in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present application.

Claims

1. A photocatalytic biological rotating disc processor suitable for black and odorous water bodies, characterized in that, The application relates to a biological rotating disc device, which comprises a support (1), a biological rotating disc mechanism, a first cleaning mechanism and a second cleaning mechanism, wherein the biological rotating disc mechanism comprises a rotating disc shaft (2), a plurality of first disc pieces (3) and a plurality of second disc pieces (4) which are rotatably arranged on the rotating disc shaft (2), and a rotating disc driving motor which is in transmission connection with the rotating disc shaft (2), the first disc pieces (3) and the second disc pieces (4) are arranged at intervals, both sides of the first disc pieces (3) are loaded with titanium dioxide photocatalysts, both sides of the second disc pieces (4) are provided with microbial membrane areas, the first cleaning mechanism comprises a plurality of cleaning blocks (5) and a driving assembly which drives the cleaning blocks (5) to move, the bottom of the cleaning block (5) is provided with a slot (501) which is matched with the second disc piece (4), first brushes (502) are arranged on the inner walls of both sides of the slot (501), when the first cleaning mechanism is in a cleaning working state, the top of the second disc piece (4) is inserted into the slot (501) of the cleaning block (5), the rotating disc driving motor drives the rotating disc shaft (2) to rotate, so as to drive the second disc piece (4) to rotate between the two first brushes (502).

2. The photocatalytic biological rotating disc processor suitable for black and odorous water body according to claim 1, characterized in that, The driving assembly comprises a rotating shaft (6), L-shaped moving rods (7) which are rotatably connected to both sides of the rotating shaft (6), and a driving motor (8) which is in transmission connection with the rotating shaft (6), the cleaning block (5) is fixedly connected to the bottom of the rotating shaft (6), and the driving motor (8) drives the rotating shaft (6) to rotate, so as to drive the cleaning block (5) to rotate.

3. The photocatalytic biological rotating disc processor suitable for black and odorous water body according to claim 2, characterized in that, The outer side of the L-shaped moving rod (7) is slidably connected to the inner side wall of the support (1) through a sliding assembly, so as to drive the first cleaning mechanism to move up and down.

4. The photocatalytic biological rotating disc processor suitable for black and odorous water body according to claim 3, characterized in that, The second cleaning mechanism comprises a cross rod (9) which is fixed to the upper portion of the support (1) and a plurality of cleaning plates (10) which are vertically fixed to the bottom of the cross rod (9) and matched with the cleaning block (5), and second brushes (1001) are arranged on both sides of the cleaning plate (10).

5. The photocatalytic biological rotating disc processor suitable for black and odorous water body according to claim 4, characterized in that, When the second cleaning mechanism is in a cleaning working state, the cleaning plate (10) is inserted into the slot (501) of the cleaning block (5), the sliding assembly drives the cleaning block (5) to move up and down, so as to clean the first brush (502).

6. The photocatalytic biological rotating disc processor suitable for black and odorous water body according to claim 1, characterized in that, A solar photovoltaic panel (11) and an illumination mechanism are mounted on the top of the support (1).

7. The photocatalytic biological rotating disc processor suitable for black and odorous water body according to claim 1, characterized in that, The titanium dioxide photocatalyst is N-doped titanium dioxide nanotube.

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