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CN-121181188-B - Wastewater pretreatment system based on nano air floatation and magnetic filtration

CN121181188BCN 121181188 BCN121181188 BCN 121181188BCN-121181188-B

Abstract

The invention discloses a wastewater pretreatment system based on nano air flotation and magnetic filtration, which relates to the technical field of wastewater treatment and comprises a nano air flotation device, a magnetic filtration device, a water inlet assembly, an air inlet assembly, a filtration assembly and a vibration assembly, wherein when sewage impacts a trapezoid plate, the trapezoid plate and vent holes move in an inner partition plate, the area of the vent holes overlapped with an air inlet pipe is increased, air bubbles sprayed by a sprayer are gradually increased, when sewage flows into the trapezoid plate, a filter plate and a fixed cylinder move along with the movable part of the trapezoid plate, the movable part is driven by the vibration assembly to integrally vibrate, the inclination angle of the rear filter plate and the fixed cylinder is changed, the movable block is matched with the fixed cylinder to stretch and retract to drive the filter plate to vibrate under the driving of the vibration assembly, the generation of air bubble quantity is regulated through the change of sewage flow, the rapid air flotation treatment is reduced on an inclined body distance, and a structure with upper and lower opening is used for slowly flowing and guiding air bubbles, so that small turbulence is formed to avoid the phenomenon that a large amount of air bubbles are adsorbed on the surface of the filtration assembly to cause agglomeration.

Inventors

  • ZHANG YUNFEI
  • SHEN HONGMEI
  • GAO QI
  • HE JINPING
  • QI YUANFENG
  • ZHENG WENZHENG
  • ZHANG JUN

Assignees

  • 浙江坚膜科技有限公司

Dates

Publication Date
20260508
Application Date
20251104

Claims (9)

  1. 1. The wastewater pretreatment system based on nano air floatation and magnetic filtration comprises a nano air floatation device (1) and a magnetic filtration device (8), and is characterized by further comprising a water inlet component (2) which is arranged inside the nano air floatation device (1) and comprises an inner partition plate (203) and a trapezoid plate (204), wherein the trapezoid plate (204) is provided with a vent hole (207) for moving the trapezoid plate (204) and the vent hole (207) inside the inner partition plate (203) when sewage impacts the trapezoid plate (204); The air inlet assembly (3) is arranged in the nano air floatation device (1) and comprises an air inlet pipe (301) and a sprayer (303), and bubbles sprayed by the sprayer (303) are gradually increased along with the increase of the superposition area of the vent hole (207) and the air inlet pipe (301); The filter assembly (5) is hinged to the top of the sprayer (303) through the vibration assembly (4), and comprises a filter plate (501), a fixed cylinder (502) and a movable block (507), when sewage inflow is increased, the filter plate (501) and the fixed cylinder (502) move along with the trapezoid plate (204) and vibrate integrally under the driving of the vibration assembly (4), and then the filter plate (501) and the fixed cylinder (502) change the inclination angle and drive the filter plate (501) to vibrate under the driving of the vibration assembly (4) by matching the fixed cylinder (502) with the movable block (507) in a telescopic manner; The vibration assembly (4) comprises a vibration plate (401) which is in sliding fit with the top of the baffle plate (305) and the top of the sprayer (303) and is used for being matched with the filter assembly (5) to vibrate so as to reduce the adhesion of bubbles to the surface of the filter assembly (5); The top of the rotating plug (402) is rotationally connected with the bottom of the vibrating plate (401), one side of the rotating plug is fixedly provided with a plug sleeve (403), the bottom of the rotating plug is fixedly provided with an impeller (404), and the impeller (404) rotates to drive the rotating plug (402) to rotate inside the sprayer (303), so that the plug sleeve (403) on one side of the rotating plug (402) intermittently blocks the side hole (304) at the top of the sprayer (303), and the plug sleeve (403) and the vibrating plate (401) are intermittently impacted upwards by air flow to move up and down.
  2. 2. The wastewater pretreatment system based on nano air flotation and magnetic filtration according to claim 1, wherein the nano air flotation device (1) comprises a nano air flotation tank (101) which is communicated with a magnetic filtration device (8) through a drainer (103) and is used for carrying out magnetic filtration after air flotation treatment, a blowdown device (104) is fixedly arranged on the top of the nano air flotation tank, and the blowdown device (104) is positioned above the drainer (103) and is used for discharging air flotation pollutants; the output end of the water pump (102) is communicated with the bottom of the nano air floatation tank (101) and is used for pumping sewage into the nano air floatation tank (101) for pretreatment; and the output end of the bubble generator (105) is communicated with the side surface of the nano air floatation tank (101) and is used for supplying air floatation gas into the nano air floatation tank (101).
  3. 3. The wastewater pretreatment system based on nano air floatation and magnetic filtration according to claim 2, wherein the water inlet assembly (2) further comprises a water inlet pipe (201), an output end of which is communicated with the output end of the water pump (102), an output end of which is communicated with the inside of the inner partition plate (203), and a one-way valve (202) is fixedly arranged in the water inlet pipe and used for guiding the sewage to enter the nano air floatation tank (101) in a one-way manner for treatment; Elastomer (206), its inside of installing inside baffle (203), its one end and trapezoidal board (204) fixed connection, the inside sliding connection of trapezoidal board (204) and inside baffle (203), and the one end fixedly connected with connecting rod (205) of trapezoidal board (204) for according to sewage rivers pressure control sewage's import volume.
  4. 4. The wastewater pretreatment system based on nano-air flotation and magnetic filtration according to claim 2, wherein the air inlet assembly (3) further comprises an air inlet pipe (301) with an input end communicated with an output end of the bubble generator (105) and an output end communicated with the bottom of the inner partition plate (203) for introducing the gas generated inside the bubble generator (105) into the nano-air flotation tank (101); the air guide hose (302) is fixedly arranged at the top of the inner partition board (203) and the output end of the air guide hose is fixedly arranged at the input end of the sprayer (303), and is used for enabling air to pass through the inner partition board (203) after passing through the air inlet pipe (301) and enter the air guide hose (302) under the regulation and control of the vent holes (207).
  5. 5. The wastewater pretreatment system based on nano-air flotation and magnetic filtration according to claim 4, wherein the air intake assembly (3) further comprises a baffle (305) movably installed inside the nano-air flotation tank (101) and fixedly connected with the side surface of the sprayer (303) for separating the entered wastewater and the pretreated water flow; The side of the sprayer (303) is fixedly connected with one end of the connecting rod (205), and a side hole (304) is formed in one side of the sprayer (303) and is used for enabling gas in the air guide hose (302) to reach the sprayer (303) and be sprayed out along the side hole (304) in the sprayer (303) to form bubbles in sewage.
  6. 6. The wastewater pretreatment system based on nano-air flotation and magnetic filtration according to claim 1, wherein the filtration assembly (5) further comprises through holes (504) which are arranged at two sides of the fixed cylinder (502) and are fixedly connected with valves (505) inside, the valves (505) at two sides are arranged in the same direction, and the filtered wastewater flows back into the wastewater through the through holes (504) under the unidirectional transportation of the valves (505); The utility model discloses a sewage treatment device, including fixed section of thick bamboo (502), movable block (507) and filter plate (501) array connection become the italic, fixed section of thick bamboo (502) one side that is close to sewage is located to arc groove (503), is used for the italic that arc groove (503) cooperation concatenation formed to carry out slow flow and direction to bubble and sewage, and fixed section of thick bamboo (502) possess elasticity and elasticity top-down increase gradually.
  7. 7. The wastewater pretreatment system based on nano-air flotation and magnetic filtration according to claim 6, wherein the filtration assembly (5) further comprises a limiting block (506) fixedly installed inside the fixed cylinder (502) for limiting the movable block (507) when moving inside the fixed cylinder (502); The top of movable block (507) and the bottom fixed connection of filter plate (501), the inside sliding connection of the bottom of movable block (507) and fixed section of thick bamboo (502), the bottom of fixed section of thick bamboo (502) and the top fixed connection of filter plate (501) for fixed section of thick bamboo (502), movable block (507) and filter plate (501) splice into the italic, the side fixedly connected with of movable block (507) resets body (508) for supplementary movable block (507) are in the inside slip of fixed section of thick bamboo (502).
  8. 8. The wastewater pretreatment system based on nano-air flotation and magnetic filtration according to claim 7, wherein a rebound body (6) is fixedly arranged at the top of the filter assembly (5) and is used for matching with the integral vibration of the filter assembly (5), and a guide assembly (7) is hinged at the top of the rebound body (6).
  9. 9. The wastewater pretreatment system based on nano air floatation and magnetic filtration according to claim 8, wherein the guiding component (7) comprises a moving plate (701), one end of the moving plate is hinged with the top of the rebound body (6), the other end of the moving plate is slidably connected with a separation plate (702), the separation plate (702) is fixed in the nano air floatation tank (101) and used for limiting after the filtering component (5) moves a certain distance, and the inclination angle of the subsequent filtering component (5) is continuously changed so as to adapt to the condition that the bubbles are concentrated when the wastewater increases.

Description

Wastewater pretreatment system based on nano air floatation and magnetic filtration Technical Field The invention relates to the technical field of wastewater treatment, in particular to a wastewater pretreatment system based on nano air floatation and magnetic filtration. Background With the development of social economy and the growth of population, the generation amount of urban domestic garbage is increased, the treatment of landfill leachate is an important environmental engineering problem, landfill leachate is high-concentration organic wastewater, and contains a large amount of suspended matters, organic matters, heavy metals, pathogenic bacteria and other pollutants, and if the landfill leachate is not effectively treated, serious pollution is caused to the environment, so that how to effectively treat the landfill leachate to realize waste recycling is an important research topic in the current environmental protection field, wherein nano air floatation is a physicochemical water treatment technology for adsorbing and removing pollutants in wastewater by generating nano micro-bubbles with diameters below 1 micrometer by utilizing the unique physicochemical properties of the nano air floatation. The Chinese patent with the publication number of CN119263394A discloses a nano air floatation device which comprises an air floatation box body, a mixing reaction chamber, a flow guide piece, a jet flow mixer and a nano bubble generator, wherein the air floatation box body is arranged in an extending mode along the up-down direction and is sequentially divided into a scum area, a clear water area and a mud sedimentation area along the up-down direction, the mixing reaction chamber is arranged in the air floatation box body and is arranged in an extending mode along the up-down direction, the upper end and the lower end of the mixing reaction chamber are respectively communicated with the air floatation box body, and the upper end of the mixing reaction chamber is positioned in the scum area. The Chinese patent with the publication number of CN119306286B discloses garbage leachate treatment equipment, which comprises a frame, a storage mechanism, a power mechanism, a switching mechanism and a defoaming mechanism, wherein the storage mechanism is fixedly connected with the frame, the power mechanism is fixedly connected with the storage mechanism, a power shaft is arranged, the switching mechanism is provided with a vertical moving bracket, and a movable connector is fixed on the vertical moving bracket. According to the technical scheme, problems exist in the use process, when the external inflow sewage quantity is increased, the air bubble quantity is difficult to control so as to adapt to sewage flow, the sewage treatment efficiency is low due to insufficient air bubbles, the air bubbles are dense when the sewage treatment is carried out due to excessive air bubbles, the air bubbles are adsorbed to form agglomeration, and the stability and quality of air floatation treatment are affected. Along with the increase of sewage flow and the increase of bubble volume, the bubble is adsorbed on filtering the italic easily to agglomerate between the bubble, cause the bubble to rise slowly and even broken, make the impurity that adsorbs drift, thereby lead to the air supporting effect not good. In addition, when a large amount of bubbles are formed in the existing part for treating a large amount of sewage, the inclined guiding filtering structure causes slow rising of the bubbles, and dense bubbles are easy to be unevenly distributed, so that the efficiency of air floatation sewage treatment is low, and the air floatation effect and the air floatation efficiency are affected by agglomeration. Therefore, it is necessary to solve the above problems by using wastewater pretreatment system based on nano-air flotation and magnetic filtration. Disclosure of Invention The invention aims to provide a wastewater pretreatment system based on nano air floatation and magnetic filtration so as to solve the problems in the background art. In order to achieve the aim, the invention provides the following technical scheme that the wastewater pretreatment system based on nano air floatation and magnetic filtration comprises a nano air floatation device and a magnetic filtration device, and further comprises: The water inlet assembly is arranged in the nano air floatation device and comprises an inner partition plate and a trapezoid plate, and vent holes are formed in the trapezoid plate and are used for moving in the inner partition plate when sewage impacts the trapezoid plate; The air inlet assembly is arranged in the nano air floatation device and comprises an air inlet pipe and a sprayer, and bubbles sprayed by the sprayer are gradually increased along with the increase of the superposition area of the vent hole and the air inlet pipe; The filter component is hinged to the top of the sprayer through the vibration component, an