CN-122010225-A - Multistage serial-type filtering device for perfluorocompound adsorption treatment

CN122010225ACN 122010225 ACN122010225 ACN 122010225ACN-122010225-A

Abstract

The invention discloses a multistage serial-type filtering device for perfluorinated compounds adsorption treatment, which relates to the field of wastewater treatment and comprises a tank body and a plurality of adsorption columns arranged in the tank body, wherein the tank body is in an incomplete ring shape, a piston is arranged at the water inlet end of the adsorption column, the piston is in sealing fit with the inner wall of the tank body, a water permeable hole is formed in the middle of the piston, two connecting rods are fixedly connected between two adjacent pistons, rotating assemblies are symmetrically arranged at the front side and the rear side of the tank body and used for driving the pistons to synchronously rotate along the axis of the tank body, a switching assembly is arranged above the tank body and used for replacing the adsorption column positioned on the piston at the outer side of the tank body, a sealing assembly is arranged at one end of the tank body, close to a water inlet pipe, of the sealing assembly is used for ensuring that the side part of the tank body is kept sealed when the rotating assembly drives the pistons to move, and continuous automatic operation of a system is ensured by rotating and replacing the adsorption column on the premise of uninterrupted water inlet and treatment.

Inventors

ZHANG ZHENG
WANG TINGTING
YU XUERU
XU HUI
BI JIANHUA

Assignees

南京市生态环境保护科学研究院

Dates

Publication Date: 20260512
Application Date: 20260408

Claims (10)

1.A multistage serial filtering device for perfluorinated compounds adsorption treatment comprises a tank body (1) and a plurality of adsorption columns (2) arranged in the tank body (1), and is characterized in that the tank body (1) is in an incomplete ring shape, a piston (3) is arranged at the water inlet end of the adsorption column (2), the piston (3) is in sealing fit with the inner wall of the tank body (1), a water permeable hole is formed in the middle of the piston (3), two connecting rods (4) are fixedly connected between two adjacent pistons (3), and a water inlet pipe (5) and a water quality detector (6) are arranged on the tank body (1); the front side and the rear side of the tank body (1) are symmetrically provided with rotating assemblies, and the rotating assemblies are used for driving a plurality of pistons (3) to synchronously rotate along the axis of the tank body (1); a switching assembly is arranged above the tank body (1) and is used for replacing an adsorption column (2) positioned on a piston (3) at the outer side of the tank body (1); One end of the tank body (1) close to the water inlet pipe (5) is provided with a sealing assembly, and the sealing assembly is used for ensuring that the side part of the tank body (1) is kept sealed while the piston (3) is driven by the rotating assembly to move.
2. The multistage serial filter device for perfluorinated compound adsorption treatment according to claim 1, wherein the rotating assembly comprises a first frame body (7), a first rotating frame (8) is fixedly connected to an output shaft on one side, close to the tank body (1), of the first frame body (7), a plurality of push rods (9) are connected to the first rotating frame (8) in a sliding mode, the number of the push rods (9) is equal to that of the pistons (3), the plurality of push rods (9) and the pistons (3) are distributed in a circumferential array, and a driving assembly is arranged on the first rotating frame (8) and is used for driving the push rods (9) to be attached to the pistons (3) located on the outer side of the tank body (1).
3. The multistage serial filter device for perfluorinated compound adsorption treatment according to claim 2, wherein the driving assembly comprises a spring (10) sleeved on a push rod (9), one end of the spring (10) is fixedly connected with the push rod (9) and the other end of the spring is fixedly connected with a first rotating frame (8), one end, far away from the tank body (1), of the push rod (9) is fixedly connected with a push block (11), a first guiding ring (12) is fixedly connected onto the first frame body (7), and the push block (11) is attached to the first guiding ring (12).
4. A multistage tandem type filtering apparatus for perfluorocompound adsorption treatment according to claim 3, wherein the distance between the portion of the guide ring (12) projected in the front-rear direction of the tank (1) and the tank (1) is larger than the distance between the remaining portion of the guide ring (12) and the tank (1).
5. The multistage serial filter device for perfluorinated compound adsorption treatment according to claim 1, wherein the sealing assembly comprises a sealing tube (13) fixedly connected with the tank body (1), the sealing tube (13) is communicated with the tank body (1), two sealing plates (14) are connected to two ends of the sealing tube (13) in a sliding mode, the two sealing plates (14) are symmetrically distributed, the two sealing plates (14) are in sealing fit with the connecting rod (4), a support (15) is fixedly connected to the sealing tube (13) at a position close to the sealing plates (14), two first air cylinders (16) are fixedly connected to the support (15), and telescopic ends of the first air cylinders (16) are fixedly connected with the sealing plates (14).
6. The multistage serial filter device for perfluorinated compound adsorption treatment according to claim 5, wherein the sealing pipe (13) is positioned on an extension line of the tank body (1) and is coaxial with the tank body (1), the inner diameter of the sealing pipe (13) is larger than that of the tank body (1), the sealing pipe (13) is provided with a water suction pump (17), the water suction pump (17) is provided with a water injection pipe (18) and a water suction pipe (19), and the water inlet pipe (5) and the water suction pipe (19) are communicated with the sealing pipe (13).
7. The multistage serial-type filtering device for perfluorinated compound adsorption treatment according to claim 1, wherein the switching assembly comprises a second frame body (20), a sliding rail (21) is fixedly connected to the second frame body (20), a second cylinder (22) is fixedly connected to the sliding rail (21), a sliding block (23) is fixedly connected to the telescopic end of the second cylinder (22), a third cylinder (24) is fixedly connected to the sliding block (23), a motor (25) is fixedly connected to the bottom end of the third cylinder (24), and an electric clamping plate (26) is fixedly connected to an output shaft of the motor (25).
8. A multistage tandem type filtering apparatus for perfluorocompound adsorption treatment according to claim 5, wherein the water inlet pipe (5) is provided on the tank body (1) at a position close to the sealing pipe (13), and the water inlet pipe (5) is connected with the tank body (1).
9. A multistage tandem type filtration apparatus for perfluorocompound adsorption treatment according to claim 1, wherein the water quality detector (6) is provided on the tank (1) at a position after the first adsorption column (2) in the direction of water flow in the tank (1).
10. The multistage serial-type filtering device for perfluorinated compound adsorption treatment according to claim 1, wherein a plurality of clamping bins (27) are fixedly connected to the piston (3), a plurality of clamping blocks (28) are fixedly connected to the joint part of the adsorption column (2) and the piston (3), and the clamping blocks (28) are matched with the clamping bins (27) in a clamping mode.

Description

Multistage serial-type filtering device for perfluorocompound adsorption treatment Technical Field The invention relates to the technical field of wastewater treatment, in particular to a multistage serial filtering device for perfluorinated compound adsorption treatment. Background Perfluorinated compounds (PFCs) are organic pollutants with high stability and durability, and are widely applied to industries such as textile, electroplating, fire fighting, semiconductor manufacturing and the like. The strong carbon-fluorine bond makes the carbon-fluorine bond difficult to degrade by natural environment, is easy to accumulate in water and soil, and is enriched by food chains, thus forming potential threat to ecological environment and human health. Therefore, efficient removal of perfluorinated compounds from industrial wastewater and contaminated water has become an important issue in the environmental field. At present, the adsorption method is one of effective means for treating low-concentration perfluorinated compounds in water, and commonly used adsorbents comprise active carbon, resin, modified mineral materials and the like. The existing adsorption treatment device mostly adopts a fixed bed or single-stage filtration mode, and has the defects that 1, after the adsorbent is saturated, the operation is required to be stopped, the adsorbent is replaced or regenerated, the treatment process is interrupted, the continuous production or the efficiency of wastewater treatment is affected, 2, the problems of limited adsorption capacity, quick penetration time and incomplete treatment of low-concentration, high-flow or complex substrate wastewater are usually caused by single-stage adsorption treatment, the deep purification discharge requirement is difficult to be stably met, 3, part of devices are complex in design, the replacement operation of an adsorption unit is complicated, the automation degree is low, and the operation and maintenance cost and the manual operation strength are increased. Disclosure of Invention The present invention is directed to a multistage tandem type filtration apparatus for perfluoro compound adsorption treatment, which solves the problems set forth in the background art. The multistage serial filtering device for the perfluorinated compounds adsorption treatment comprises a tank body and a plurality of adsorption columns arranged in the tank body, wherein the tank body is in an incomplete ring shape, a piston is arranged at the water inlet end of the adsorption column, the piston is in sealing fit with the inner wall of the tank body, and a water permeable hole is formed in the middle of the piston; The front side and the rear side of the tank body are symmetrically provided with rotating assemblies, and the rotating assemblies are used for driving a plurality of pistons to synchronously rotate along the axis of the tank body; A switching assembly is arranged above the tank body and is used for replacing an adsorption column on a piston at the outer side of the tank body; The tank body is close to inlet tube one end and is equipped with seal assembly, seal assembly is used for guaranteeing that this lateral part of tank body remains sealed when rotating assembly drive piston removes. Preferably, the rotating assembly comprises a first frame body, a first rotating frame is fixedly connected to an output shaft of the first frame body, which is close to one side of the tank body, a plurality of push rods are connected to the first rotating frame in a sliding mode, the number of the push rods is equal to that of the pistons, the plurality of push rods and the pistons are distributed in a circumferential array, and a driving assembly is arranged on the first rotating frame and is used for driving the push rods to be attached to the pistons located on the outer side of the tank body. Preferably, the driving assembly comprises a spring sleeved on the push rod, one end of the spring is fixedly connected with the push rod, the other end of the spring is fixedly connected with the first rotating frame, one end of the push rod, which is far away from the tank body, is fixedly connected with a push block, and the first frame is fixedly connected with a guide ring, and the push block is attached to the guide ring. Preferably, the distance between the part of the guide ring projected in the front-rear direction of the tank body and the tank body is greater than the distance between the rest part of the guide ring and the tank body. Preferably, the sealing assembly comprises a sealing pipe fixedly connected with the tank body, the sealing pipe is communicated with the tank body, two sealing plates are connected to two ends of the sealing pipe in a sliding mode, the two sealing plates are symmetrically distributed and are in sealing fit with the connecting rod, a support is fixedly connected to the sealing pipe at a position close to the sealing plates, two first cylinders are fixedly connecte