A denitrification device for mariculture effluent

Abstract

The present application relates to the field of sewage treatment, and more particularly to a denitrification equipment for mariculture tail water, which comprises a denitrification filter tank, a water inlet pipe, a water outlet pipe, a support bottom plate, a support side plate, a plurality of first filter cloth mechanisms, a driving mechanism, a plurality of linkage mechanisms and a plurality of second filter cloth mechanisms, which can effectively remove suspended solids and organic waste in water through double-layer filtration, reduce pollutants in water, and thus improve water quality; when it is summer, the decomposition efficiency of organic matter in water will increase with the increase of temperature, which will increase suspended solids and organic waste; the second filter cloth is moved upward by starting the driving motor, so that the double-layer filtration becomes single-layer filtration; the filtration area is increased by lifting the second filter cloth, and the overall filtration speed is accelerated, so that the decrease of filtration speed caused by the increase of suspended solids and organic waste is avoided, and the filtration efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, and more particularly to a denitrification device for effluent from marine aquaculture. Background Technology

[0002] Wastewater treatment refers to the process of treating wastewater containing pollutants through a series of physical, chemical, and biological methods to meet environmental discharge standards or reusable water quality requirements. These methods include sedimentation, filtration, oxidation, and biodegradation. These processes effectively reduce water pollution and protect the environment and human health. Denitrification equipment removes or converts nitrogen compounds (such as ammonia nitrogen, nitrate nitrogen, and nitrite nitrogen) from wastewater into nitrogen gas. Denitrification reduces the nitrogen content in water bodies, preventing water pollution. Common wastewater denitrification methods include biological denitrification and physicochemical denitrification, which effectively improve nitrogen pollution problems during wastewater treatment. Currently, denitrification can be achieved by forming a biofilm on the filter cloth in a cloth filter. However, in the process of denitrifying mariculture effluent, the composition of the effluent varies with the seasons. Seasonal changes make it impossible to adjust the filtration efficiency of the filter cloth according to demand, easily affecting its effectiveness. Summary of the Invention

[0003] Therefore, it is necessary to provide a denitrification device for marine aquaculture tailwater to solve at least one of the technical problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A denitrification device for effluent from marine aquaculture includes a denitrification filter, an inlet pipe, an outlet pipe, a supporting base plate, supporting side plates, several first filter cloth mechanisms, a drive mechanism, several linkage mechanisms, and several second filter cloth mechanisms. The inlet pipe is fixedly installed at the upper part of one end of the denitrification filter, and the outlet pipe is fixedly installed at the bottom of the other end of the denitrification filter. The supporting base plate is fixedly installed on the lower part of the inner side wall of the denitrification filter. The denitrification filter has a filtration chamber and an outlet chamber inside. The filtration chamber is located above the supporting base plate, and the outlet chamber is located below the supporting base plate. The inlet pipe communicates with the filtration chamber, and the outlet pipe communicates with the outlet chamber. The supporting side plates are fixedly installed on one side wall of the filtration chamber, and the top of the supporting base plate has several through-holes. The filter channel extends to the bottom. The first filter cloth mechanism is fixedly installed on the top of the support base plate, and several first filter cloth mechanisms are located above several filter channels. Several lifting adjustment slots corresponding to the first filter cloth mechanisms are opened on one side wall of the support side plate. The drive mechanism is installed on the top of the end of the denitrification filter near the outlet pipe, and one end of the drive mechanism extends through the side wall of the denitrification filter to the end of the filter chamber near the inlet pipe. The linkage mechanism is installed in the lifting adjustment slot, and the top of the linkage mechanism extends upward to the outside of the lifting adjustment slot. Several second filter cloth mechanisms are fixedly installed on one side wall of several linkage mechanisms, and the second filter cloth mechanism is located inside the corresponding first filter cloth mechanism.

[0006] As a further improvement of the present invention, the first filter cloth mechanism includes two filter cloth main boards, two first filter cloths and two first side plates. The filter cloth main boards are fixedly installed on the top of the supporting base plate, and the two filter cloth main boards are symmetrically arranged. The two filter cloth main boards are respectively located on both sides above the corresponding filter channel. A first filter groove is opened on one side wall of the filter cloth main board, which extends to the other side wall. Lifting vertical grooves are opened at both ends of the side wall of the filter cloth main board away from the other filter cloth main board. The two first filter cloths are respectively fixedly installed on the side wall of the two first filter channels that are far away from each other. The first side plates are fixedly installed at the ends of the side walls of the two filter cloth main boards that are close to each other, and the two first side plates are respectively arranged at both ends of the filter cloth main board.

[0007] As a further improvement of the present invention, the driving mechanism includes a driving mounting plate, a driving motor, a driving rod, and a plurality of driving bevel gears. The driving mounting plate is fixedly mounted on the top of the denitrification filter at the end away from the inlet pipe. The driving motor is fixedly mounted on the top of the driving mounting plate. One end of the driving rod is fixedly mounted on the output shaft of the driving motor, and the other end of the driving rod extends through the side wall of the denitrification filter to the end of the filter chamber near the inlet pipe. The driving rod is rotatably connected to the denitrification filter. The driving bevel gears are fixedly mounted on the driving rod, and the plurality of driving bevel gears are evenly spaced along the axial direction of the driving rod.

[0008] As a further improvement of the present invention, the linkage mechanism includes a linkage lifting block, a linkage threaded rod, and a linkage bevel gear. The linkage lifting block is slidably installed on the side wall of the lifting adjustment groove, the linkage threaded rod is rotatably installed at the bottom of the lifting adjustment groove, and the top of the linkage threaded rod extends upward to the outside of the lifting adjustment groove. The linkage threaded rod is threadedly connected to the linkage lifting block, and the linkage bevel gear is fixedly installed on the top of the linkage threaded rod, and the linkage bevel gear meshes with the corresponding drive bevel gear.

[0009] As a further improvement of the present invention, the second filter cloth mechanism includes a mounting top plate, two filter cloth mounting plates, two second filter cloths, and two second side plates. The mounting top plate is fixedly mounted on the top of one side wall of the linkage lifting block, the filter cloth mounting plates are fixedly mounted on the bottom of the mounting top plate, and the two filter cloth mounting plates are spaced apart. A second filter groove is opened on one side wall of the filter cloth mounting plate, extending to the other side wall. The two second filter cloths are respectively fixedly mounted on the side walls of the two second filter grooves, and the second filter cloths are fitted with the corresponding first filter cloths. The second side plates are fixedly mounted on the ends of the side walls of the two filter cloth mounting plates that are close to each other, and the two second side plates are respectively located at both ends of the filter cloth mounting plates.

[0010] As a further improvement of the present invention, two scraper assemblies are provided on both sides of the bottom of the mounting top plate, and the two scraper assemblies are symmetrically arranged. The scraper assembly includes two lifting vertical rods, two scraper connecting rods, a fixed crossbar and a cleaning scraper. The lifting vertical rods are fixedly installed on the bottom of the mounting top plate, and the two lifting vertical rods are respectively slidably arranged on the side walls of the two lifting vertical grooves of the same filter cloth main board. The two scraper connecting rods are respectively fixedly installed on the bottom of the two lifting vertical rods. The two ends of the fixed crossbar are respectively fixedly installed on the ends of the two scraper connecting rods. The cleaning scraper is fixedly installed on the side wall of the fixed crossbar near the first filter cloth.

[0011] As a further improvement of the present invention, a scraping slope is formed on the top of the cleaning scraper, the distance between the scraping slope and the supporting base plate gradually increases in the direction of the fixed crossbar, and the side of the cleaning scraper away from the fixed crossbar is attached to the side wall of the first filter cloth.

[0012] As a further improvement of the present invention, the top of the lifting adjustment groove has two piston through grooves, and the two piston through grooves are respectively located on both sides of the linkage threaded rod. The top of the support side plate is provided with several nutrient addition components, and the bottom of the nutrient addition components extends through the corresponding piston through groove into the lifting adjustment groove.

[0013] As a further improvement of the present invention, the nutrient addition component includes a nutrient addition block, a lifting support rod, a piston slider, and a return spring. The nutrient addition block is fixedly installed on the top of the support side plate, and a piston extrusion chamber is opened at the bottom of the nutrient addition block. The lifting support rod is slidably installed on the side wall of the piston through groove, and the top of the lifting support rod is located in the piston extrusion chamber, while the bottom of the lifting support rod is located in the lifting adjustment groove. The piston slider is fixedly installed on the top of the lifting support rod, and the piston slider is slidably disposed on the side wall of the piston extrusion chamber. The top of the return spring is fixedly installed on the bottom of the piston slider, and the bottom of the return spring is fixedly installed on the top of the support side plate.

[0014] As a further improvement of the present invention, a plurality of addition holes are provided on one side wall of the nutrient addition block, and the addition holes are connected to the piston extrusion chamber. Nutrient solution is provided in the piston extrusion chamber and the nutrient solution is located above the piston slider. An addition pipe is fixedly installed on the side wall of the nutrient addition block away from the addition holes, and one end of the addition pipe extends through the side wall of the denitrification filter to the outside of the filter chamber. A one-way valve is provided in the addition pipe and the addition pipe is connected to the piston extrusion chamber. A water quality detection device is installed in the middle of the outlet pipe.

[0015] The advantages of this invention compared to the prior art are:

[0016] 1. Dual-layer filtration can more effectively remove suspended solids and organic waste from water, reducing pollutants and improving water quality. In summer, as the temperature rises, the decomposition efficiency of organic matter in the water accelerates, leading to an increase in suspended solids and organic waste. By starting the drive motor, the second filter cloth is moved upward, turning dual-layer filtration into single-layer filtration. Raising the second filter cloth increases the filtration area and accelerates the overall filtration speed, preventing the filtration speed from decreasing due to the increase in suspended solids and organic waste. This greatly improves filtration efficiency. Regularly adjusting the position of the second filter cloth extends the service life of both the first and second filter cloths, reducing the frequency of filter cloth replacement and thus lowering maintenance costs and labor intensity.

[0017] 2. The lifting vertical rod, scraper connecting rod, fixed horizontal rod and cleaning scraper driven by the installation top plate move upward to clean the surface of the first filter cloth. The cleaning process can effectively remove suspended solids and organic waste attached to the surface of the first filter cloth. By cleaning the first filter cloth, a high filtration effect can be maintained, avoiding surface clogging and increased resistance, thereby maintaining the high efficiency filtration capacity and long-term stability of the first filter cloth.

[0018] 3. By starting the drive motor, the linkage lifting block moves upward, separating the first and second filter cloths, increasing the filtration area, and thus accelerating the filtration speed. This helps to address the situation where the decomposition rate of organic matter accelerates due to rising summer temperatures. It can utilize the decomposition rate of organic matter to improve filtration efficiency. The linkage lifting block moves upward to hold the bottom of the lifting support rod, allowing the piston slider to squeeze the nutrient solution into the filter chamber, promoting the growth, metabolism, and enzyme system function of microorganisms. This ensures that microorganisms are not inefficient in decomposing organic matter due to insufficient nutrients, thus helping to maintain the efficient decomposition of organic matter. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present invention;

[0021] Figure 3 This is a schematic cross-sectional view of another embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the first filter cloth mechanism according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the second filter cloth mechanism and scraper assembly according to an embodiment of the present invention;

[0024] Figure 6 for Figure 3 A magnified view of a section at point A in the middle;

[0025] In the diagram: 1. Denitrification filter; 2. Inlet pipe; 3. Outlet pipe; 4. Support base plate; 5. Support side plate; 6. Water quality testing equipment; 30. First filter cloth mechanism; 40. Drive mechanism; 50. Linkage mechanism; 60. Second filter cloth mechanism; 101. Filter chamber; 102. Outlet chamber; 401. Filter channel; 501. Lifting adjustment channel; 31. Filter cloth main board; 32. First filter cloth; 33. First side plate; 311. First filter channel; 312. Lifting vertical channel; 41. Drive mounting plate; 42. Drive motor; 43. Drive rod; 44. Drive bevel gear; 51. Linkage lifting mechanism. 52. Lowering block; 53. Linkage threaded rod; 64. Linkage bevel gear; 65. Mounting top plate; 66. Filter cloth mounting plate; 67. Second filter cloth; 68. Second side plate; 69. Second filter tank; 60. Scraper assembly; 61. Lifting vertical rod; 62. Scraper connecting rod; 63. Fixed horizontal rod; 64. Cleaning scraper; 65. Scraping slope; 50. Piston through groove; 71. Nutrient addition assembly; 72. Nutrient addition block; 73. Lifting support rod; 74. Piston slider; 75. Reset tension spring; 76. Piston extrusion chamber; 77. Addition hole; 78. Addition pipe. Detailed Implementation

[0026] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Please see Figures 1 to 6A denitrification device for effluent from seawater aquaculture includes a denitrification filter tank 1, an inlet pipe 2, an outlet pipe 3, a supporting base plate 4, a supporting side plate 5, several first filter cloth mechanisms 30, a drive mechanism 40, several linkage mechanisms 50, and several second filter cloth mechanisms 60. The inlet pipe 2 is fixedly installed at the upper part of one end of the denitrification filter tank 1, and the outlet pipe 3 is fixedly installed at the bottom of the other end of the denitrification filter tank 1. The supporting base plate 4 is fixedly installed on the lower part of the inner side wall of the denitrification filter tank 1. The denitrification filter tank 1 has a filter chamber 101 and an outlet chamber 102 formed inside. The filter chamber 101 is located above the supporting base plate 4, and the outlet chamber 102 is located below the supporting base plate 4. The inlet pipe 2 communicates with the filter chamber 101, and the outlet pipe 3 communicates with the outlet chamber 102. The supporting side plate 5 is fixedly installed on one side wall of the filter chamber 101. Several first filter cloth mechanisms 30 are opened on the top of the supporting base plate 4. A filter channel 401 extends to the bottom. A first filter cloth mechanism 30 is fixedly installed on the top of the supporting base plate 4, and several first filter cloth mechanisms 30 are respectively located above several filter channels 401. Several lifting adjustment channels 501 corresponding to the first filter cloth mechanisms 30 are opened on one side wall of the supporting side plate 5. A drive mechanism 40 is installed on the top of the end of the denitrification filter 1 near the outlet pipe 3, and one end of the drive mechanism 40 extends through the side wall of the denitrification filter 1 to the end of the filter chamber 101 near the inlet pipe 2. A linkage mechanism 50 is installed in the lifting adjustment channel 501, and the top of the linkage mechanism 50 extends upward to the outside of the lifting adjustment channel 501. Several second filter cloth mechanisms 60 are respectively fixedly installed on one side wall of several linkage mechanisms 50, and the second filter cloth mechanisms 60 are partially located inside the corresponding first filter cloth mechanism 30.

[0030] The first filter cloth mechanism 30 includes two filter cloth main boards 31, two first filter cloths 32, and two first side plates 33. The filter cloth main boards 31 are fixedly installed on the top of the support base plate 4, and the two filter cloth main boards 31 are symmetrically arranged. The two filter cloth main boards 31 are respectively located on both sides above the corresponding filter channel 401. A first filter groove 311 is opened on one side wall of the filter cloth main board 31, which extends to the other side wall. Lifting vertical grooves 312 are opened at both ends of the side wall of the filter cloth main board 31 away from the other filter cloth main board 31. The two first filter cloths 32 are respectively fixedly installed on the side wall of the two first filter grooves 311 that are far away from each other. The first side plates 33 are fixedly installed at the ends of the side walls of the two filter cloth main boards 31 that are close to each other, and the two first side plates 33 are respectively arranged at both ends of the filter cloth main board 31.

[0031] The drive mechanism 40 includes a drive mounting plate 41, a drive motor 42, a drive rod 43, and several drive bevel gears 44. The drive mounting plate 41 is fixedly mounted on the top of the denitrification filter 1 at the end away from the inlet pipe 2. The drive motor 42 is fixedly mounted on the top of the drive mounting plate 41. One end of the drive rod 43 is fixedly mounted on the output shaft of the drive motor 42, and the other end of the drive rod 43 extends through the side wall of the denitrification filter 1 to the end of the filter chamber 101 near the inlet pipe 2. The drive rod 43 is rotatably connected to the denitrification filter 1. The drive bevel gears 44 are fixedly mounted on the drive rod 43, and several drive bevel gears 44 are evenly spaced along the axial direction of the drive rod 43.

[0032] The linkage mechanism 50 includes a linkage lifting block 51, a linkage threaded rod 52, and a linkage bevel gear 53. The linkage lifting block 51 is slidably installed on the side wall of the lifting adjustment groove 501. The linkage threaded rod 52 is rotatably installed on the bottom of the lifting adjustment groove 501, and the top of the linkage threaded rod 52 extends upward to the outside of the lifting adjustment groove 501. The linkage threaded rod 52 is threadedly connected to the linkage lifting block 51. The linkage bevel gear 53 is fixedly installed on the top of the linkage threaded rod 52, and the linkage bevel gear 53 meshes with the corresponding drive bevel gear 44.

[0033] The second filter cloth mechanism 60 includes a mounting top plate 61, two filter cloth mounting plates 62, two second filter cloths 63, and two second side plates 65. The mounting top plate 61 is fixedly mounted on the top of one side wall of the linkage lifting block 51. The filter cloth mounting plates 62 are fixedly mounted on the bottom of the mounting top plate 61, and the two filter cloth mounting plates 62 are spaced apart. A second filter groove 621 is opened on one side wall of the filter cloth mounting plate 62, which extends to the other side wall. The two second filter cloths 63 are respectively fixedly mounted on the side walls of the two second filter grooves 621. The second filter cloths 63 are fitted with the corresponding first filter cloths 32. The second side plates 65 are fixedly mounted on the ends of the side walls of the two filter cloth mounting plates 62 that are close to each other, and the two second side plates 65 are respectively located at both ends of the filter cloth mounting plates 62.

[0034] Two scraper assemblies 64 are provided on both sides of the bottom of the mounting top plate 61, and the two scraper assemblies 64 are symmetrically arranged. The scraper assembly 64 includes two lifting vertical rods 641, two scraper connecting rods 642, a fixed crossbar 643, and a cleaning scraper 644. The lifting vertical rods 641 are fixedly installed at the bottom of the mounting top plate 61, and the two lifting vertical rods 641 are respectively slidably arranged on the side walls of the two lifting vertical grooves 312 of the same filter cloth main plate 31. The two scraper connecting rods 642 are respectively fixedly installed at the bottom of the two lifting vertical rods 641. The two ends of the fixed crossbar 643 are respectively fixedly installed at the ends of the two scraper connecting rods 642. The cleaning scraper 644 is fixedly installed on the side wall of the fixed crossbar 643 near the first filter cloth 32.

[0035] The top of the cleaning scraper 644 has a scraping slope 645. The distance between the scraping slope 645 and the supporting base plate 4 gradually increases in the direction of the fixed crossbar 643. The side of the cleaning scraper 644 away from the fixed crossbar 643 is attached to the side wall of the first filter cloth 32.

[0036] The top of the lifting adjustment groove 501 has two piston through grooves 502, and the two piston through grooves 502 are located on both sides of the linkage threaded rod 52. The top of the support side plate 5 is provided with several nutrient addition components 70, and the bottom of the nutrient addition components 70 extends into the lifting adjustment groove 501 through the corresponding piston through groove 502.

[0037] The nutrient addition component 70 includes a nutrient addition block 71, a lifting support rod 72, a piston slider 73, and a return spring 74. The nutrient addition block 71 is fixedly installed on the top of the support side plate 5. A piston extrusion chamber 711 is opened at the bottom of the nutrient addition block 71. The lifting support rod 72 is slidably installed on the side wall of the piston through groove 502, and the top of the lifting support rod 72 is located in the piston extrusion chamber 711, while the bottom of the lifting support rod 72 is located in the lifting adjustment groove 501. The piston slider 73 is fixedly installed on the top of the lifting support rod 72, and the piston slider 73 is slidably disposed on the side wall of the piston extrusion chamber 711. The top of the return spring 74 is fixedly installed on the bottom of the piston slider 73, and the bottom of the return spring 74 is fixedly installed on the top of the support side plate 5.

[0038] A number of addition holes 712 are provided on one side wall of the nutrient addition block 71, and the addition holes 712 are connected to the piston extrusion chamber 711. The piston extrusion chamber 711 is filled with nutrient solution, which is located above the piston slider 73. An addition pipe 713 is fixedly installed on the side wall of the nutrient addition block 71 away from the addition holes 712, and one end of the addition pipe 713 extends through the side wall of the denitrification filter 1 to the outside of the filter chamber 101. A one-way valve is provided in the addition pipe 713, and the addition pipe 713 is connected to the piston extrusion chamber 711. A water quality detection element 6 is installed in the middle of the water outlet pipe 3.

[0039] In one embodiment, wastewater treatment is a crucial step in marine aquaculture. During operation, wastewater is discharged into the filter chamber 101 through the inlet pipe 2. It undergoes initial filtration through the first filter cloth 32, followed by a second filtration through the second filter cloth 63, achieving a double-layer filtration effect and improving filtration efficiency. A biofilm forms on the surfaces of the first and second filter cloths 32 and 63. Microorganisms in this biofilm utilize organic matter and ammonia nitrogen for growth and metabolism, converting ammonia nitrogen into nitrogen gas or nitrogen compounds, thus removing nitrogen. The filtered wastewater then enters the outlet chamber 102 through the filter channel 401. The filtered water in the outlet chamber 102 is discharged through the outlet pipe 3. Simultaneously, the water quality detection device 6 can detect the discharged water to determine if it meets the requirements.

[0040] During different seasons of aquaculture, the composition of the effluent changes due to variations in water temperature, stocking density, and other factors. This can affect the filtration efficiency of the cloth filter, requiring timely adjustments and adaptations. For example, in summer, rising water temperatures accelerate the decomposition of organic matter, leading to an increase in plankton in the aquaculture water. Similarly, the rainy season brings increased rainfall and the risk of land-based pollutants being washed into the marine aquaculture area. Therefore, the cloth filter needs to quickly and effectively remove suspended solids and organic waste to prevent these pollutants from impacting the aquaculture water. When there is a high level of suspended solids and organic waste, larger suspended solids are filtered and intercepted by the first filter cloth 32, causing a large amount of suspended solids and organic waste to quickly adhere to the surface of the first filter cloth 32. The filtration efficiency is low, and the dual filtration effect of the first filter cloth 32 and the second filter cloth 63 will greatly reduce the filtration speed, resulting in a slower filtration speed. At this time, the operator can start the drive motor 42, which drives the drive rod 43 to rotate. The drive rod 43 drives several drive bevel gears 44 to rotate, which in turn drives the meshing linkage bevel gear 53 to rotate. The linkage bevel gear 53 drives the linkage threaded rod 52 to rotate, which in turn drives the linkage lifting block 51 to move upward. The linkage lifting block 51 drives the mounting top plate 61 to move upward, which in turn drives the filter cloth mounting plate 62 to move upward. This allows the second filter cloth 63 to move upwards. Once it reaches its maximum distance, the second filter cloth 63 moves above the first filter cloth 32. At this point, the double-layer filtration system changes to a single-layer filtration system. The second filter cloth 63 and the first filter cloth 32 can work together to filter the effluent, increasing the filtration area and significantly accelerating the filtration speed. This reduces the impact of seasonal changes on the filtration effect and utilizes seasonal variations (such as summer temperatures accelerating the decomposition of organic matter, increasing the filtration area as the second filter cloth 63 moves upwards, and preventing suspended solids and organic waste from accumulating solely on the surface of the first filter cloth 32, but rather sharing the filtration role with the second filter cloth 63) to improve the overall filtration speed. Dual-layer filtration can more effectively remove suspended solids and organic waste from water, reducing pollutants and improving water quality. In summer, as the temperature rises, the decomposition efficiency of organic matter in the water accelerates, leading to an increase in suspended solids and organic waste. By starting the drive motor 42, the second filter cloth 63 is moved upward, turning dual-layer filtration into single-layer filtration. Raising the second filter cloth 63 increases the filtration area and accelerates the overall filtration speed, preventing the filtration speed from decreasing due to the increase in suspended solids and organic waste, thus greatly improving filtration efficiency. By periodically adjusting the position of the second filter cloth 63, the service life of the first filter cloth 32 and the second filter cloth 63 is extended, reducing the frequency of filter cloth replacement and thus reducing maintenance costs and labor intensity.

[0041] In another embodiment, the pores of the first filter cloth 32 are slightly larger than those of the second filter cloth 63. During dual-layer filtration, the first filter cloth 32 filters larger suspended solids and organic waste, while the second filter cloth 63 filters smaller suspended solids and organic waste. This results in the first filter cloth 32 having a higher concentration of suspended solids and organic waste, while the second filter cloth 63 remains relatively clean. When the mounting plate 61 moves upward, it drives the lifting vertical rod 641 to move upward along the side wall of the lifting vertical groove 312. The lifting vertical rod 641 drives the scraper connecting rod 642 to move upward, which in turn drives the fixed horizontal rod 643 to move upward. The fixed horizontal rod 643 then drives the cleaning scraper 644 to move upward. The upward movement of the scraper 644 cleans the surface of the first filter cloth 32, thereby scraping off suspended matter and organic waste adhering to the surface of the first filter cloth 32, improving the cleanliness of the surface of the first filter cloth 32, and preventing the surface of the first filter cloth 32 from being clogged and contaminated, thus affecting the filtration effect. The lifting vertical rod 641, scraper connecting rod 642, fixed horizontal rod 643 and cleaning scraper 644 driven by the mounting top plate 61 move upward to clean the surface of the first filter cloth 32. The cleaning process can effectively remove suspended matter and organic waste adhering to the surface of the first filter cloth 32. By cleaning the first filter cloth 32, a high filtration effect can be maintained, avoiding surface clogging and increased resistance, thereby maintaining the high efficiency filtration capacity and long-term stability of the first filter cloth 32.

[0042] In another embodiment, when the summer temperature rises and the decomposition rate of organic matter accelerates, the operator starts the drive motor 42 to move the linkage lifting block 51 upward. The first filter cloth 32 and the second filter cloth 63 separate for filtration, increasing the filtration area and accelerating the filtration speed. When the decomposition rate of organic matter and the filtration speed increase, the overall filtration efficiency is improved by utilizing the decomposition rate of organic matter. The filter chamber 101 needs more nutrients to provide the nutrients required for decomposition by microorganisms. When the linkage lifting block 51 moves upward, it will abut against the bottom of the lifting support rod 72, causing the bottom of the lifting support rod 72 to move upward. The lifting support rod 72 can drive the piston slider 73 to move upward on the side wall of the piston squeezing chamber 711. When the piston slider 73 moves, it can squeeze the nutrient solution in the piston squeezing chamber 711 into the filter chamber 101. The nutrient solution, such as glucose, lactose, agarose, etc., is used as an energy source and carbon supply for microorganisms; ammonium salts, nitrates, amino acids, etc., are used to synthesize proteins and other nitrogen compounds; or iron, manganese, zinc, etc., are used for enzyme systems. The nutrient solution plays a catalytic role in the function and microbial metabolism process; or, like B vitamins, it is used for the growth and metabolism of microorganisms. The height of the tailwater liquid level in the filter chamber 101 is the same as the top height of the supporting side plate 5. The nutrient solution squeezed into the filter chamber 101 can increase the nutrients in the tailwater, thereby providing sufficient nutrients for microorganisms to decompose organic matter. This avoids the situation where insufficient nutrients lead to a decrease in the decomposition efficiency of organic matter. By starting the drive motor 42, the linkage lifting block 51 is driven to move upward, so that the first filter cloth 32 and the second filter cloth 63 are separated, increasing the filtration area and thus accelerating the filtration speed. This helps to deal with the situation where the decomposition speed of organic matter is accelerated due to the increase in summer temperature. It can utilize the decomposition speed of organic matter to improve filtration efficiency. The linkage lifting block 51 moves upward to hold the bottom of the lifting support rod 72, so that the piston slider 73 can squeeze the nutrient solution into the filter chamber 101, promoting the growth, metabolism and enzyme system function of microorganisms. This ensures that the microorganisms will not be inefficient due to insufficient nutrients when decomposing organic matter, and helps to maintain the efficient decomposition of organic matter.

[0043] It is worth noting that when the nutrient solution is squeezed into the filter chamber 101, some of the nutrient solution will flow to the surface of the first filter cloth 32 through the scraping slope 645 of the cleaning scraper 644, so that the biofilm on the surface of the first filter cloth 32 can receive sufficient nutrients. Or a small amount of nutrient solution may remain in the angle between the surface of the first filter cloth 32 and the scraping slope 645. When the drive motor 42 is started in reverse, the scraping slope 645 of the cleaning scraper 644 moves downward, which allows the small amount of nutrient solution remaining in the angle to gradually contact the surface of the first filter cloth 32. The bottom of the cleaning scraper 644 can scrape off the suspended matter and organic waste attached to the surface of the first filter cloth 32, and the scraping slope 645 at the top of the cleaning scraper 644 can play a similar role to spreading a small amount of nutrient solution to the surface of the first filter cloth 32. This can both clean the surface of the first filter cloth 32 and provide sufficient nutrients to the biofilm on the surface of the first filter cloth 32.

[0044] This solution achieves the following: 1. Through dual-layer filtration, suspended solids and organic waste in water can be removed more effectively, reducing pollutants in the water and thus improving water quality. In summer, as the temperature rises, the decomposition efficiency of organic matter in the water will accelerate, resulting in an increase in suspended solids and organic waste. By starting the drive motor 42, the second filter cloth 63 is moved upward, and the dual-layer filtration becomes single-layer filtration. By raising the second filter cloth 63, the filtration area is increased, the overall filtration speed is accelerated, and the situation where the filtration speed decreases due to the increase in suspended solids and organic waste is avoided, which greatly improves the filtration efficiency. By periodically adjusting the position of the second filter cloth 63, the service life of the first filter cloth 32 and the second filter cloth 63 is extended, the frequency of filter cloth replacement is reduced, thereby reducing maintenance costs and labor intensity.

[0045] 2. The lifting vertical rod 641, scraper connecting rod 642, fixed horizontal rod 643 and cleaning scraper 644 driven by the installation top plate 61 move upward to clean the surface of the first filter cloth 32. The cleaning process can effectively remove suspended solids and organic waste attached to the surface of the first filter cloth 32. By cleaning the first filter cloth 32, a high filtration effect can be maintained, and surface clogging and resistance increase can be avoided, thereby maintaining the high efficiency filtration capacity and long-term stability of the first filter cloth 32.

[0046] 3. By starting the drive motor 42, the linkage lifting block 51 is driven to move upward, so that the first filter cloth 32 and the second filter cloth 63 are separated, increasing the filtration area and thus accelerating the filtration speed. This helps to deal with the situation where the decomposition speed of organic matter is accelerated due to the rise in summer temperature. The filtration efficiency can be improved by utilizing the decomposition speed of organic matter. The linkage lifting block 51 moves upward to hold the bottom of the lifting support rod 72, so that the piston slider 73 can squeeze the nutrient solution into the filter chamber 101, promoting the growth, metabolism and enzyme system function of microorganisms. This ensures that the microorganisms will not be inefficient due to insufficient nutrients when decomposing organic matter, and helps to maintain the efficient decomposition of organic matter.

[0047] All possible combinations of the various technical features in the above embodiments are described; however, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make numerous modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A denitrification apparatus for sea farming effluent, characterized by, The utility model provides a nitrogen removal filter, including denitrification filter (1), inlet pipe (2), outlet pipe (3), support base plate (4), support side plate (5), a plurality of first filter cloth mechanism (30), drive mechanism (40), a plurality of linkage mechanism (50) and a plurality of second filter cloth mechanism (60), inlet pipe (2) fixed mounting at denitrification filter (1) one end upper portion, outlet pipe (3) fixed mounting at denitrification filter (1) the bottom of other end, support base plate (4) fixed mounting at the inside lateral wall lower portion of denitrification filter (1), and the inside of denitrification filter (1) forms filter cavity (101) with outlet chamber (102), filter cavity (101) is located the top of support base plate (4), outlet chamber (102) is located the bottom of support base plate (4), inlet pipe (2) is connected with filter cavity (101), outlet pipe (3) is connected with outlet chamber (102), support side plate (5) fixed mounting is at the one side lateral wall of filter cavity (101), and the top of support base plate (4) is equipped with a plurality of filter through slot (401) that penetrates to the bottom, and first filter cloth mechanism (30) fixed mounting is at the top of support base plate (4), and a plurality of first filter cloth mechanism (30) are located the top of a plurality of filter through slot (401) respectively, and the one side lateral wall of support side plate (5) is equipped with a plurality of lifting adjustment groove (501) with first filter cloth mechanism (30) corresponding, drive mechanism (40) is installed at the top of denitrification filter (1) near outlet pipe (3) one end, and one end of drive mechanism (40) extends to the one end of filter cavity (101) near inlet pipe (2) through the lateral wall of denitrification filter (1), linkage mechanism (50) is installed in lifting adjustment groove (501), and the top of linkage mechanism (50) extends to the outside of lifting adjustment groove (501) upwards, and a plurality of second filter cloth mechanism (60) are fixedly installed on the one side lateral wall of a plurality of linkage mechanism (50) respectively, and second filter cloth mechanism (60) partially located inside corresponding first filter cloth mechanism (30); First filter cloth mechanism (30) including two filter cloth mainboards (31), two first filter cloths (32) and two first side plates (33), filter cloth mainboard (31) fixed mounting is at the top of support base plate (4), and two filter cloth mainboards (31) are symmetrically set up, and two filter cloth mainboards (31) are located the two sides of corresponding filter through slot (401) respectively, and the one side lateral wall of filter cloth mainboard (31) is equipped with first filter groove (311) that penetrates to the other side lateral wall, and the one side lateral wall both ends of filter cloth mainboard (31) away from another filter cloth mainboard (31) are equipped with lifting vertical groove (312), and two first filter cloths (32) are fixedly installed on the one side lateral wall of two first filter grooves (311) away from each other, and first side plate (33) fixed mounting is at the one side lateral wall end of two filter cloth mainboards (31) close to each other, and two first side plates (33) are arranged at the both ends of filter cloth mainboard (31) respectively. The driving mechanism (40) comprises a driving mounting plate (41), a driving motor (42), a driving rod (43) and a plurality of driving bevel gears (44). The driving mounting plate (41) is fixedly installed at the top of the denitrification filter (1) away from the water inlet pipe (2). The driving motor (42) is fixedly installed at the top of the driving mounting plate (41). One end of the driving rod (43) is fixedly installed on the output shaft of the driving motor (42), and the other end of the driving rod (43) extends to one end of the filtering cavity (101) close to the water inlet pipe (2) through the side wall of the denitrification filter (1). The driving rod (43) is rotationally connected with the denitrification filter (1). The driving bevel gears (44) are fixedly installed on the driving rod (43), and the plurality of driving bevel gears (44) are arranged at equal intervals along the axial direction of the driving rod (43). The linkage mechanism (50) comprises a linkage lifting block (51), a linkage threaded rod (52) and a linkage bevel gear (53). The linkage lifting block (51) is slidingly installed on the side wall of the lifting adjusting groove (501). The linkage threaded rod (52) is rotationally installed at the bottom of the lifting adjusting groove (501), and the top of the linkage threaded rod (52) extends upward outside the lifting adjusting groove (501). The linkage threaded rod (52) is threadedly connected with the linkage lifting block (51). The linkage bevel gear (53) is fixedly installed on the top of the linkage threaded rod (52), and the linkage bevel gear (53) is meshed with the corresponding driving bevel gear (44). The second filter cloth mechanism (60) comprises a mounting top plate (61), two filter cloth mounting plates (62), two second filter cloths (63) and two second side plates (65). The mounting top plate (61) is fixedly installed at the top of one side wall of the linkage lifting block (51). The filter cloth mounting plates (62) are fixedly installed at the bottom of the mounting top plate (61), and the two filter cloth mounting plates (62) are arranged at intervals. The side wall of the filter cloth mounting plate (62) is provided with a second filtering groove (621) penetrating through the other side wall. The two second filter cloths (63) are fixedly installed on the side walls of the two second filtering grooves (621), respectively. The second filter cloth (63) is arranged in close contact with the corresponding first filter cloth (32). The second side plates (65) are fixedly installed at the end portions of the side walls of the two filter cloth mounting plates (62) close to each other, and the two second side plates (65) are arranged at the two ends of the filter cloth mounting plate (62), respectively. The tail water is discharged into the filtering cavity (101) through the water inlet pipe (2). The tail water is preliminarily filtered through the first filter cloth (32), and then the preliminarily filtered tail water is filtered again through the second filter cloth (63). The surfaces of the first filter cloth (32) and the second filter cloth (63) form a biofilm. When there are more suspended solids and organic waste, the second filter cloth (63) moves upward. When the second filter cloth (63) moves to the maximum distance, the second filter cloth (63) moves above the first filter cloth (32). The double-layer filtering changes into single-layer filtering, and the second filter cloth (63) and the first filter cloth (32) can jointly filter the tail water.

2. The apparatus for denitrification of sea cage effluent according to claim 1, characterised in that, Two scraper assemblies (64) are arranged on the bottom of the mounting top plate (61) and symmetrically, the scraper assembly (64) comprises two lifting vertical rods (641), two scraper connecting rods (642), a fixed cross rod (643) and a cleaning scraper (644), the lifting vertical rod (641) is fixedly installed on the bottom of the mounting top plate (61), and the two lifting vertical rods (641) are respectively and slidingly arranged on the side walls of the two lifting vertical grooves (312) of the same filter cloth main plate (31), the two scraper connecting rods (642) are respectively and fixedly installed on the bottoms of the two lifting vertical rods (641), the two ends of the fixed cross rod (643) are respectively and fixedly installed on the ends of the two scraper connecting rods (642), and the cleaning scraper (644) is fixedly installed on the side wall of the side of the fixed cross rod (643) close to the first filter cloth (32).

3. The apparatus for denitrification of sea cage effluent according to claim 2, characterised in that, The top of the cleaning scraper (644) is formed with a scraping slope (645), the distance between the scraping slope (645) and the supporting bottom plate (4) gradually increases in the direction of the fixed cross rod (643), and the side of the cleaning scraper (644) away from the fixed cross rod (643) is attached to the side wall of the first filter cloth (32).

4. The apparatus for denitrification of sea cage effluent according to claim 3, characterised in that, The top of the lifting adjusting groove (501) is provided with two piston through grooves (502), and the two piston through grooves (502) are respectively located on the two sides of the linkage threaded rod (52), the top of the supporting side plate (5) is provided with a plurality of nutrient adding assemblies (70), and the bottom of the nutrient adding assembly (70) extends into the lifting adjusting groove (501) through the corresponding piston through groove (502).

5. The apparatus for denitrification of sea cage effluent according to claim 4, characterised in that, The nutrient adding assembly (70) comprises a nutrient adding block (71), a lifting resisting rod (72), a piston sliding block (73) and a reset tension spring (74), the nutrient adding block (71) is fixedly installed on the top of the supporting side plate (5), the bottom of the nutrient adding block (71) is provided with a piston extrusion cavity (711), the lifting resisting rod (72) is slidingly installed on the side wall of the piston through groove (502), the top of the lifting resisting rod (72) is located in the piston extrusion cavity (711), the bottom of the lifting resisting rod (72) is located in the lifting adjusting groove (501), the piston sliding block (73) is fixedly installed on the top of the lifting resisting rod (72), and the piston sliding block (73) is slidingly arranged on the side wall of the piston extrusion cavity (711), the top of the reset tension spring (74) is fixedly installed on the bottom of the piston sliding block (73), and the bottom of the reset tension spring (74) is fixedly installed on the top of the supporting side plate (5).

6. The apparatus for denitrification of sea cage effluent according to claim 5, characterised in that, A plurality of adding holes (712) are arranged on one side wall of the nutrition adding block (71), and the adding holes (712) are communicated with a piston extrusion cavity (711), the piston extrusion cavity (711) is provided with a nutrition liquid, the nutrition liquid is located above the piston sliding block (73), an adding pipeline (713) is fixedly installed on the side wall of the nutrition adding block (71) away from the adding holes (712), one end of the adding pipeline (713) extends to the outside of the filter cavity (101) through the side wall of the denitrification filter tank (1), a one-way valve is arranged in the adding pipeline (713), and the adding pipeline (713) is communicated with the piston extrusion cavity (711), and the water body detection piece (6) is installed in the middle of the water outlet pipe (3).

Images