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CN-121990711-A - Stepped purifying and circulating device and method for eutrophication treatment of black and odorous water body

CN121990711ACN 121990711 ACN121990711 ACN 121990711ACN-121990711-A

Abstract

The invention provides a stepped purifying and circulating device for eutrophication treatment of black and odorous water bodies, which belongs to the technical field of purifying devices and comprises a top cover, an air floatation bin, a scattering bin and a culturing bin, wherein a capturing mechanism is arranged in the air floatation bin, the side wall of the scattering bin is provided with the scattering mechanism, the culturing bin is internally provided with the culturing mechanism, the capturing mechanism comprises a first motor and a gas pipe, the first motor is connected with a central shaft, a plurality of rotary blades are arranged on the side wall of the central shaft, a plurality of gas distribution pipes are communicated with the side wall of the gas pipe, and a plurality of capillaries are communicated with the outer wall of the gas distribution pipes. According to the invention, the micro-bubbles are generated through the capillary array, so that the micro-bubbles are adsorbed on the surface of the suspended microalgae, the suspended microalgae are gathered towards the water surface by utilizing buoyancy, the capturing rate of the suspended microalgae with the micro-particle size in the water body is improved, the micro-bubbles have larger gas-liquid contact area, are more soluble in the water, and effectively improve the dissolved oxygen concentration of the water body. The invention also relates to a use method of the stepped purifying and circulating device for the eutrophication treatment of the black and odorous water body.

Inventors

  • ZHANG SHI
  • Bao Zigu
  • YAN KUN
  • SUN LINGKAI
  • XU WANGPENG
  • LI PANPAN
  • GAO ZHAOBO
  • HONG GANLIN
  • HUANG QUN

Assignees

  • 长江勘测规划设计研究有限责任公司

Dates

Publication Date
20260508
Application Date
20260123

Claims (10)

  1. 1. The stepped purification and circulation device for eutrophication treatment of black and odorous water bodies is characterized by comprising a top cover (100), an air floatation bin (200), a scattering bin (300) and a culture bin (400) which are sequentially arranged from top to bottom, wherein the side wall of the top cover (100) is connected with the side wall of the air floatation bin (200) through a conveying pipe (110), a top plate (210) is arranged at the top of the air floatation bin (200), a mounting plate (220) is arranged at the bottom of the air floatation bin, an output port (230) is arranged on the side wall of the air floatation bin (200), a capturing mechanism (500) is arranged in the air floatation bin (200), the bottom of the scattering bin (300) is communicated with the top of the culture bin (400), the output port (230) is connected with the side wall of the scattering bin (300) through an output pipe (310), the side wall of the scattering bin (300) is provided with a scattering mechanism (600), and the culture mechanism (700) is arranged in the culture bin (400). The capturing mechanism (500) comprises a first motor (510) arranged at the top of the top plate (210) and a gas pipe (520) arranged at the axis of the top of the mounting plate (220), wherein the output end of the first motor (510) stretches into the air floatation bin (200) to be connected with the central shaft (530), a plurality of rotating blades (531) are circumferentially arranged on the side wall of the central shaft (530) along the axis, a plurality of gas distribution pipes (540) are circumferentially communicated with the side wall of the gas pipe (520) along the axis, a plurality of capillaries (541) are vertically and upwardly communicated with the outer wall of the gas distribution pipe (540), and the capillaries (541) are located below the rotating blades (531).
  2. 2. The stepped purification and circulation device for eutrophication treatment of black and odorous water body according to claim 1, wherein the top of the top plate (210) is an arc surface, and a plurality of guide grooves (211) are formed on the top of the top plate (210) along the axis in a surrounding manner, and the first motor (510) is positioned in the protective cover (511); a plurality of positioning frames (221) are circumferentially arranged on the top of the mounting plate (220) along the axis, and the positioning frames (221) are connected with the capillary tube (541) and are positioned below the capillary tube (541); The top of the top cover (100) is provided with a filter plate (120).
  3. 3. The stepwise purification and circulation device for eutrophication of black and odorous water body according to claim 1, wherein the capillary tube (541) has a plurality of capillary holes (542) formed in the side wall thereof.
  4. 4. The stepped purification and circulation device for eutrophication of black and odorous water body according to claim 1, wherein the scattering mechanism (600) comprises a plurality of second motors (610) which are circumferentially arranged on the outer wall of the scattering bin (300) along the axis of the scattering bin (300), the output ends of the second motors (610) extend into the scattering bin (300) to be connected with a rotating shaft (620), the rotating shaft (620) is connected with a distributing device (630), and the output pipe (310) extends into the distributing device (630) from the inlet of the distributing device (630).
  5. 5. The stepped purification and circulation device for eutrophic water body of claim 4, wherein the distributor (630) is arranged obliquely, the inner wall of the distributor (630) is conical, the outlet of the distributor (630) is of a double-layer structure, the inner layer is provided with a plurality of through holes (631), and the side surface of the outer layer is provided with a plurality of scattering ports (632).
  6. 6. The stepwise purification and circulation device for eutrophic water body according to claim 4, wherein the scattering bin (300) is provided with a plurality of mounting pipes (320) circumferentially along an axis, and the second motor (610) is installed in the mounting pipes (320).
  7. 7. The stepped purification and circulation device for eutrophication of black and odorous water body according to claim 4, wherein the scattering bin (300) is communicated with the cultivation bin (400), a base (800) is arranged at the bottom of the cultivation bin (400), the cultivation mechanism (700) comprises a third motor (710) arranged at the bottom of the base (800), an output shaft of the third motor (710) is connected with a threaded shaft (720), the threaded shaft (720) sequentially penetrates through the base (800) and the cultivation bin (400) and is positioned in the cultivation bin (400), a movable sleeve (730) is connected with an external thread of the threaded shaft (720) in a sleeved mode, the top of the threaded shaft (720) is rotatably connected with a fixed shaft (740), a plurality of sliding grooves (810) are formed in the base (800) in a surrounding mode along an axis, limit clips (820) are arranged in the sliding grooves (810) in a sliding mode up-down mode, the bottom of the movable sleeve (730) is positioned in the base (800), a limit disc (740) connected with the limit clips (820) is arranged at the bottom of the movable sleeve (730), the top of the fixed shaft (731) is connected with the fixed shaft (220) in a surrounding mode along a plurality of limit grooves (741) along the axis, the outer wall of the fixed shaft (740) is provided with a plurality of racks (742) in a surrounding mode along the axis, one end of the limiting column (750) is connected with the limiting groove (741) in a vertically sliding mode, the other end of the limiting column penetrates through the movable sleeve (730), the matrix disc (760) is provided with a plurality of racks in a surrounding mode along the axis of the culture bin (400), one end of the matrix disc (760) penetrates through the limiting column (750) and is connected with the racks (742) through the gear (761), and a plurality of culture grooves (762) are formed in the top of the other end of the matrix disc (760).
  8. 8. The stepped purification and circulation device for eutrophication treatment of black and odorous water body according to claim 7, wherein a supporting plate (770) is arranged in the culture tank (762), a turntable (780) is rotatably connected to the top of the supporting plate (770), a fourth motor (771) is mounted at the bottom of the supporting plate (770), a plurality of rotatably connected fluted discs (772) are circumferentially arranged on the top of the periphery of the supporting plate (770) along an axis, the output end of the fourth motor (771) is connected with the bottom of the turntable (780), vortex type tracks (781) are arranged on the top of the turntable (780), the vortex type tracks (781) are meshed with the fluted discs (772), a plurality of first rotating rods (773) are sequentially rotatably connected, the rotating directions of adjacent first rotating rods (773) are opposite, a culture frame (790) is rotatably connected to the middle of the first rotating rods (773), the last first rotating rod (773) is rotatably connected with a second rotating rod (774), and the second rotating rod (774) is rotatably connected with the culture frame (790).
  9. 9. The stepwise purification and circulation device for eutrophication of black and odorous water body according to claim 8, wherein an angle sensor (900) is provided on the matrix disc (760).
  10. 10. The application method of the stepped purification and circulation device for the eutrophication treatment of the black and odorous water body is characterized by comprising the following steps of: Pumping the eutrophic water in the black and odorous water body to the upper part of the top cover (100), wherein the eutrophic water passes through the filter plate (120), and suspended microalgae with the volume smaller than the pore diameter of the filter holes of the filter plate (120) pass through the filter plate (120), and the eutrophic water containing the suspended microalgae is converged to the top edge of the top plate (210) along the guide groove (211) after flowing to the top of the air floatation bin (200), and the converged eutrophic water is conveyed to the inner bottom of the air floatation bin (200) through the conveying pipe (110); step 2, the external gas transmission equipment transmits air into the gas transmission pipe (520), the air enters the gas distribution pipe (540) from the gas transmission pipe (520), the air enters the capillary (541) from the gas distribution pipe (540), tiny bubbles are generated when the air escapes into the eutrophic water from the capillary holes (542), the tiny bubbles are adsorbed on the surface of the suspended microalgae after contacting the suspended microalgae, when the total buoyancy of a plurality of tiny bubbles adsorbed on the surface of the suspended microalgae is greater than the gravity of the suspended microalgae, the suspended microalgae floats upwards and floats on the water surface, and a large amount of suspended microalgae gradually gathers to form a block mass; step 3, a first motor (510) drives a central shaft (530) to slowly rotate, the central shaft (530) drives a rotary blade (531) to slowly rotate, and the rotary blade (531) sweeps across the eutrophic water surface to push the aggregated suspended microalgae mass, so that the suspended microalgae mass leaves the air floatation bin (200) from an output port (230); step 4, enabling the suspended microalgae to leave the air floatation bin (200) and enter the distributor (630) along the output pipe (310), enabling the microalgae to slide down along the surface of the conical inner wall after entering the distributor (630) and enter the bottom of the outer layer of the distributor (630) through the through holes (631) and penetrate through the inner layer; The method comprises the steps that when a limit column (750) is located at the bottom end of a fixed shaft (740), a matrix disc (760) is in a vertical reaction state, a plurality of culture racks (790) are contracted inside a culture groove (762), a third motor (710) drives a threaded shaft (720) to rotate through an output end, the threaded shaft (720) enables a movable sleeve (730) to move along a shaft body of the threaded shaft (720) through threaded engagement when the threaded shaft (720) rotates, when the movable sleeve (730) moves, the limit disc (731) and a limit clamp (820) cooperatively limit the movable sleeve (730) to enable the movable sleeve (730) to vertically move, when the movable sleeve (730) moves upwards, the movable sleeve (730) drives the limit column (750) to move, the limit column (750) drives the matrix disc (760) to ascend through a gear (761), the gear (761) and the rack (742) are meshed to enable the gear (761) to rotate anticlockwise when the limit column (750) ascends, and when the limit column (750) ascends to the top end of the fixed shaft (740), the matrix disc (760) rotates anticlockwise to a horizontal bearing state. Step 6, when the matrix disc (760) is in a horizontal bearing state, the angle sensor (900) is triggered and starts the fourth motor (771), the fourth motor (771) positively operates to drive the rotary disc (780) to rotate, the rotary disc (780) drives the fluted disc (772) to rotate anticlockwise through the vortex type track (781), the fluted disc (772) drives the first rotary rod (773) to rotate clockwise by taking the middle hinging part as the axle center, so that the lowest culture rack (790) adjacent to the supporting plate (770) is lifted, the first rotary rod (773) drives the adjacent first rotary rods (773) to rotate reversely, the adjacent culture racks (790) are far away from each other through linkage among the plurality of first rotary rods (773), and the uppermost culture rack (790) is rotationally connected with the first rotary rods (773) through one end of the second rotary rods (774), and the uppermost culture rack (790) and the rest culture racks (790) are synchronously moved, so that the plurality of culture racks (790) are synchronously unfolded; Step 7, starting a second motor (610) to distribute the microalgae, wherein the second motor (610) drives a rotating shaft (620) to rotate through an output end, the rotating shaft (620) drives a distributing device (630) to rotate, and the distributing device (630) throws the microalgae at the bottom of the outer layer out of a scattering port (632) through centrifugal force generated by rotation; Step 8, after microalgae distribution is finished and a period of time is waited, a worker reversely operates a third motor (710) of a third motor to enable a matrix disc (760) to descend and turn into a vertical reaction state, the worker stops the second motor (610) to continuously accumulate microalgae, and after a period of time is cultivated, the worker removes nitrogen by leading water rich in nitrifying bacteria in a cultivation bin (400) back into eutrophication water to be treated; And 9, repeating the steps 1-8, and circulating the water in the black and odorous water body.

Description

Stepped purifying and circulating device and method for eutrophication treatment of black and odorous water body Technical Field The invention relates to the technical field of purifying devices, in particular to a stepped purifying and circulating device for eutrophication treatment of black and odorous water bodies. The invention also discloses a use method of the stepped purifying and circulating device for the eutrophication treatment of the black and odorous water body. Background The black and odorous water body is a water body which is black or blackish in color and emits pungent and malodorous smell due to serious pollution, the formation of the black and odorous water body mainly results from exogenous organic matter input and endogenous sediment release, so that water body eutrophication is caused, the nitrogen and phosphorus content exceeds the standard to cause the explosive growth of algae, a series of phenomena of ecology, environment and water quality deterioration are caused, the black and odorous water body eutrophication is a serious state of water body pollution, the water body contains a large amount of toxic substances such as nitrite, aquatic organisms in the water body die in a large amount due to oxygen deficiency and toxin, so that an ecological system collapses, and the problem of the black and odorous water body eutrophication is faced, and how to remove suspended microalgae which are excessively bred in water and realize the purification of pollutants such as nitrogen and phosphorus is a key link in the field of black and odorous water body treatment. The existing purifying device has limited capturing efficiency on a large number of micro-particle suspended microalgae existing in a water body, the grid structure is difficult to effectively capture the micro-suspended microalgae with extremely small particle size, so that the effluent suspended matters are still higher, the reoxygenation effect of the water body is limited, the captured algae is usually removed as solid waste, organic matters and nutrient salts which are rich in the algae are ignored and can be used as high-quality carbon sources in the subsequent biological denitrification process, so that resource waste is caused, nitrifying bacteria are microorganisms commonly used in the water body treatment field, the nitrifying bacteria of the existing purifying device are cultured by adopting fixed fillers, the contact between a biological film and a matrix and dissolved oxygen is not uniform enough, a hydraulic dead zone or a short flow phenomenon is easy to occur, and the fixed structure cannot dynamically adjust the specific surface area and the contact angle according to different stages of microorganism growth, so that the denitrification efficiency is limited. Therefore, it is necessary to develop a stepped purification cycle device for eutrophication treatment of black and odorous water bodies. Disclosure of Invention The first object of the present invention is to overcome the above-mentioned drawbacks of the prior art, and to solve the problems of insufficient utilization of suspended microalgae, uneven spreading of microalgae base material in microbial culture, non-adjustable position angle of microbial culture carrier, etc. by using the existing purification device, the present invention provides a stepped purification and circulation device for eutrophication treatment of black and odorous water body. The second object of the invention is to provide a method for using the stepped purification and circulation device for eutrophication treatment of black and odorous water bodies. The technical scheme of the invention is that the stepped purifying and circulating device for eutrophication treatment of black and odorous water bodies is characterized by comprising a top cover, an air floatation bin, a scattering bin and a culture bin which are sequentially arranged from top to bottom, wherein the side wall of the top cover is connected with the side wall of the air floatation bin through a conveying pipe, a top plate is arranged at the top of the air floatation bin, a mounting plate is arranged at the bottom of the air floatation bin, an output port is arranged on the side wall of the air floatation bin, a capturing mechanism is arranged in the air floatation bin, the bottom of the scattering bin is communicated with the top of the culture bin, the output port is connected with the side wall of the scattering bin through an output pipe, and the side wall of the scattering bin is provided with the scattering mechanism; The capturing mechanism comprises a first motor arranged at the top of the top plate and a gas pipe arranged at the axis of the top of the mounting plate, wherein the output end of the first motor extends into the air floatation bin and is connected with the central shaft, a plurality of rotary vanes are circumferentially arranged on the side wall of the central shaft along the axis, a plurality of gas