CN118373474B - Wastewater treatment equipment for restoring agricultural contaminated soil and application method - Google Patents

Abstract

The present invention provides a wastewater treatment device and a method of use for agricultural contaminated soil remediation, which belongs to the field of wastewater treatment technology, and includes an outer shell body with an annular hollow, the outer shell body is provided with a liquid inlet and a liquid outlet; a liquid guide ring rotates in the outer shell body, a plurality of liquid separation grooves are radially opened on the outer wall of the liquid guide ring, a slip ring slides in the liquid separation groove, and a storage structure of a solid phosphorus removal agent is provided in the slip ring. The present invention disperses the wastewater to be treated into each liquid separation groove through the arrangement of the outer shell body and the liquid guide ring, and the phosphorus-containing wastewater flowing into the liquid separation groove passes through the solid phosphorus removal agent storage chamber four times after entering and in the process of discharge, so that the phosphorus-containing wastewater in the liquid separation groove is fully in contact with the solid phosphorus removal agent, thereby effectively removing phosphorus in the wastewater.

Description

Wastewater treatment equipment for agricultural contaminated soil remediation and use method

Technical Field

The present invention relates to the field of wastewater treatment, and in particular to a wastewater treatment device for agricultural contaminated soil remediation and a use method thereof.

Background Art

In the prior art, the treatment of agricultural wastewater is crucial. Agricultural wastewater contains pesticides, which leads to high concentrations of phosphorus in the wastewater. If the discharge of wastewater is not controlled, a large amount of phosphorus in the wastewater will flow to the soil, further leading to the deterioration of soil physical and chemical properties. That is, superphosphate contains a large amount of free acid. Continuous and large-scale application will cause soil acidification. Calcium magnesium phosphate fertilizer contains lime, and large-scale application will increase soil alkalinity and deteriorate physical and chemical properties. For this reason, in the construction of soil remediation, controlling the phosphorus discharged from agricultural wastewater is an important link. Experimental studies have shown that solid phosphorus removal agents have a significant effect on the treatment of phosphorus in agricultural wastewater. Among them, solid phosphorus removal agents are prior art, which are prepared by mixing titanium gypsum, fly ash, urban sludge, and borax, and then balling, drying, and sintering to obtain the solid phosphorus removal agent. However, the prior art lacks equipment for applying the solid phosphorus removal agent, and directly sprinkles it on the discharged wastewater, resulting in the inability of the two to fully react, further resulting in the effect of removing phosphorus from agricultural wastewater is not obvious.

To this end, we designed a wastewater treatment equipment and usage method for agricultural contaminated soil remediation.

Summary of the invention

In order to make up for the above shortcomings, the present invention provides a wastewater treatment equipment and a method of use for agricultural contaminated soil remediation, aiming to improve the problem of directly sprinkling solid phosphorus removal agent into the discharged wastewater, resulting in insufficient reaction between the wastewater and the solid phosphorus removal agent.

The present invention is achieved in that:

The present invention provides a wastewater treatment device for agricultural contaminated soil remediation, comprising an outer shell body with an annular hollow portion, wherein the outer shell body is provided with a liquid inlet and a liquid outlet;

A liquid guide ring is rotated in the outer shell, a plurality of liquid separation grooves are radially opened on the outer wall of the liquid guide ring, a slip ring slides in the liquid separation groove, and a storage structure of a solid dephosphorization agent is arranged in the slip ring.

Preferably, the liquid inlet is located above the liquid outlet.

Preferably, a gear ring is fixed to the inner wall of one end of the liquid guide ring, a motor is fixed to the outer wall of the outer shell, an output end of the motor passes through the outer shell and is fixedly connected to a driving gear, and the driving gear is meshed with the gear ring.

Preferably, the storage structure of the solid dephosphorization agent comprises:

A lower filter plate, the lower filter plate is in a disc shape and is arranged on the inner wall of the slip ring;

An upper filter plate, the upper filter plate being located on the inner wall of the slip ring and above the lower filter plate;

A gap is left between the lower filter plate and the upper filter plate to form a solid dephosphorization agent storage chamber.

Preferably, the upper filter plate comprises an upper disk body with feed ports equidistantly arranged, and a rotatable filter baffle is arranged below the feed ports, and the feed ports are controlled to be opened or closed as the filter baffle rotates.

Preferably, an outer extension rod is arranged inside the slip ring, a central column is arranged at the center of the outer shell, an outer protrusion A is arranged on the outer wall of the central column, and the inner end of the outer extension rod abuts against the outer wall of the central column.

Preferably, a connecting seat is fixed to the outer wall of the outer extension rod, and the connecting seat and the inner wall of the liquid guide ring are connected via a return spring.

Preferably, a stirring blade sleeve is radially rotated on the inner wall of the liquid separation tank, the stirring blade sleeve is sleeved on the outer wall of the outer extension rod, and a plurality of stirring blades are arranged on the outer wall of the stirring blade sleeve;

The outer wall of the outer extension rod is provided with an outer protrusion, and the inner wall of the stirring blade sleeve is provided with a spiral inner driving groove;

An outer protrusion B is also provided on the outer wall of the central column.

Preferably, the outer extension rod is connected to the filter baffle plate via a connecting structure, the connecting structure comprises a lower connecting ring fixed to the outer extension rod, the lower connecting ring is connected to an upper connecting ring via a plurality of connecting ribs, and the outer wall of the filter baffle plate is fixed to the inner wall of the upper connecting ring;

The inner wall of the outer shell is also fixed with an annular boss, the outer wall of the outer extension rod is fixed with an arc gear, and the outer wall of the annular boss is provided with an engaging protrusion that engages with the arc gear;

The outer shell is also provided with a solid dephosphorization agent feed port.

The present invention also discloses a method for using a wastewater treatment device for agricultural contaminated soil remediation, which is characterized by comprising the following steps:

S1. Phosphorus-containing wastewater flows into the liquid separation tank: Phosphorus-containing wastewater flows into the liquid separation tank through the liquid inlet;

S2. Liquid guide ring rotates: the motor starts, and the liquid guide ring rotates through the cooperation of the driving gear and the gear ring. When the liquid separation tank is separated from the liquid inlet, a closed space is formed between the liquid separation tank and the inner wall of the shell, so that the phosphorus-containing wastewater is fully contacted and reacted with the solid phosphorus removal agent. In this process, the phosphorus-containing wastewater passes through the solid phosphorus removal agent storage chamber, so that the phosphorus-containing wastewater is in contact with the solid phosphorus removal agent for the first time, thereby removing phosphorus in the phosphorus-containing wastewater.

S3. Flow of phosphorus-containing wastewater in the slip ring: After the outer extension rod rotates with the liquid guide ring, when the outer extension rod hits the outer protrusion B, the outer extension rod moves radially relative to the liquid guide ring, and with the cooperation of the rotating drive protrusion and the inner drive groove, the stirring blade sleeve rotates, thereby causing the stirring blade to rotate, further braking the flow of phosphorus-containing wastewater dissolved with solid phosphorus removal agent in the slip ring, so that the solid phosphorus removal agent fully contacts and reacts with the phosphorus in the phosphorus-containing wastewater.

S4, the phosphorus-containing wastewater contacts the solid phosphorus removal agent in the solid phosphorus removal agent storage chamber for the second time: As the liquid guide ring rotates, when the liquid guide ring rotates to less than half of its position, the phosphorus-containing wastewater flows from the sliding ring to the inner wall of the housing under the action of gravity, and passes through the solid phosphorus removal agent storage chamber in the process, causing the phosphorus-containing wastewater to contact the solid phosphorus removal agent for the second time;

S5. The phosphorus-containing wastewater contacts the solid phosphorus-removing agent in the solid phosphorus-removing agent storage chamber for the third time: as the liquid guide ring rotates, the outer extension rod contacts the outer protrusion A, causing the slip ring to move radially outward along the liquid separation groove, thereby causing the outer end of the slip ring to squeeze the wastewater at its outer end, and the squeezed wastewater flows from the outer end of the solid phosphorus-removing agent storage chamber to the inside of the slip ring, thereby achieving the third contact between the phosphorus-containing wastewater and the solid phosphorus-removing agent in the solid phosphorus-removing agent storage chamber.

S6. The phosphorus-containing wastewater contacts the solid phosphorus removal agent in the solid phosphorus removal agent storage chamber for the fourth time and completes the discharge: as the liquid guide ring rotates to above the liquid outlet, the wastewater in the liquid separation tank passes through the solid phosphorus removal agent storage chamber and flows out from the liquid outlet. That is, when the wastewater in the liquid separation tank completes the discharge, it also simultaneously completes the fourth contact with the solid phosphorus removal agent in the solid phosphorus removal agent storage chamber.

S7. Refilling the solid dephosphorus agent in the solid dephosphorus agent storage chamber: When the liquid guide ring rotates to below the solid dephosphorus agent feed port, the feed port is opened by the cooperation of the circular arc gear and the meshing protrusion. At this time, the solid dephosphorus agent can flow into the solid dephosphorus agent storage chamber through the solid dephosphorus agent feed port and the feed port in turn.

The beneficial effects of the present invention are:

The present invention disperses the wastewater to be treated into each liquid separation tank through the arrangement of the outer shell and the liquid guide ring. The phosphorus-containing wastewater flowing into the liquid separation tank passes through the solid phosphorus removal agent storage chamber four times after entering and during the discharge process, thereby achieving full contact between the phosphorus-containing wastewater in the liquid separation tank and the solid phosphorus removal agent, thereby effectively removing phosphorus in the wastewater.

In addition, the present invention also realizes the rotation of the stirring blade by rotating the stirring blade sleeve, thereby causing the wastewater in the separation tank to flow, thereby increasing the contact between the solid phosphorus removal agent components dissolved in the wastewater and the phosphorus in the wastewater, which can further help to remove the phosphorus in the wastewater.

Finally, the present invention also realizes that the solid dephosphorization agent can be added to the solid dephosphorization agent storage chamber through the rotation setting of the outer extension rod, which helps the sustainability and continuity of the device during practical use.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic structural diagram of a wastewater treatment device for agricultural contaminated soil remediation provided by an embodiment of the present invention;

FIG2 is a schematic diagram of the connection structure between a central column and an outer shell in a wastewater treatment device for agricultural contaminated soil remediation provided by an embodiment of the present invention;

FIG3 is a schematic diagram of the internal structure of a wastewater treatment device for agricultural contaminated soil remediation provided by an embodiment of the present invention;

4 is a schematic diagram of the connection structure of a toothed ring, an annular boss and an outer extension rod in a wastewater treatment device for agricultural contaminated soil remediation provided by an embodiment of the present invention;

FIG5 is an enlarged view of point A in FIG4;

6 is a schematic diagram of the connection structure between the outer extension rod and the stirring blade sleeve in a wastewater treatment device for agricultural contaminated soil remediation provided by an embodiment of the present invention;

FIG. 7 is a schematic diagram of a storage structure in a wastewater treatment device for agricultural contaminated soil remediation provided in an embodiment of the present invention.

In the figure:

1. outer shell; 10. liquid inlet; 11. liquid outlet; 12. annular boss; 120. meshing protrusion; 13. solid dephosphorization agent feed port;

2. Liquid guide ring; 20. Liquid separation groove; 200. Stirring blade sleeve; 201. Stirring blade; 202. Internal drive slide groove; 21. Slip ring;

3. Gear ring;

4. Motor;

5. Driving gear;

6. Storage structure; 60. Lower filter plate; 61. Upper filter plate; 610. Feed inlet; 611. Upper plate; 612. Filter baffle; 62. Solid dephosphorization agent storage chamber;

7. External extension rod; 70. Connecting seat; 71. Return spring; 72. Rotation drive protrusion; 73. Circular arc gear;

8. center column; 80. outer protrusion A; 81. outer protrusion B;

9. Connecting structure; 90. Lower connecting ring; 91. Upper connecting ring.

DETAILED DESCRIPTION

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Example

Referring to Figures 1 to 7, a wastewater treatment device for remediation of agricultural contaminated soil includes an outer shell body 1 with an annular hollow portion, wherein both ends of the outer shell body 1 are closed, and the inner hollow cavity is in a cylindrical structure, so as to facilitate the rotation of a liquid guide ring 2 arranged therein. During the rotation, the outer wall of the liquid guide ring 2 is in close contact with the inner wall of the hollow cavity of the outer shell body 1. To ensure the rotational sealing, in some embodiments, a sealing assembly is provided between the outer wall of the liquid guide ring 2 and the hollow inner wall of the outer shell body 1. Preferably, the sealing assembly is composed of an O-ring and a sealing ring.

1 to 3 , a liquid inlet 10 is provided on the outer shell 1 , and the liquid inlet 10 is used for the inflow of phosphorus-containing wastewater to be treated.

2 and 3, a liquid outlet 11 is provided on the outer shell 1, and the liquid outlet 11 is used to discharge the treated wastewater. It should be noted that the liquid inlet 10 is located above the liquid outlet 11, and as the liquid guide ring 2 rotates, the treated wastewater is discharged from the liquid outlet 11 in an orderly manner under the action of gravity.

3 and 4 , the present embodiment further discloses a driving structure for driving the liquid guiding ring 2 to rotate, and the structure is preferably implemented by transmission of gears and toothed rings, wherein the toothed ring 3 is fixed to the inner wall of the liquid guiding ring 2; in addition, a motor 4 is fixed to the outer wall of the outer shell 1, the output end of the motor 4 passes through the outer shell 1, and the gear 5 is fixed to the output end of the motor 4; further, the driving gear 5 is meshed with the toothed ring 3.

It should be noted that: the motor 4 is a servo motor. After the motor 4 actuates the driving gear 5, it further actuates the gear ring 3, thereby driving the liquid guiding ring 2. In this embodiment, the driving gear 5 actuates the gear ring 3. In this method, a small gear drives a large gear ring. As the driving gear 5 rotates, the gear ring 3 is slowly actuated, thereby slowly driving the liquid guiding ring 2, thereby providing time for fully treating the phosphorus-containing wastewater.

3 , a plurality of liquid separation grooves 20 are radially opened on the outer wall of the liquid guide ring 2. The arrangement of the liquid separation grooves 20 makes the flowing phosphorus-containing wastewater "static", that is, the phosphorus-containing wastewater to be treated is dispersed and flows into an independent cavity, and the phosphorus-containing wastewater is purified in the independent cavity, thereby providing a spatial setting basis for fully purifying the wastewater; in addition, the structural arrangement of the liquid separation grooves 20 can also fully purify the phosphorus-containing wastewater by a "breaking the whole into parts" approach.

Referring to Figure 3, based on the setting of the liquid separation tank 20, a slip ring 21 slides in the liquid separation tank 20, and a storage structure 6 for a solid dephosphorus removal agent is arranged in the slip ring 21, wherein the setting of the slip ring 21 provides an installation basis for the storage structure 6, and the storage structure 6 is used to store the solid dephosphorus removal agent. The wastewater flowing into the liquid separation tank 20 is in full contact with the solid dephosphorus removal agent arranged in the slip ring 21, so that the phosphorus-containing wastewater is fully purified by the solid dephosphorus removal agent.

In some embodiments, the storage structure 6 of the solid dephosphorus removal agent includes a lower filter plate 60 and an upper filter plate 61, wherein a gap is left between the lower filter plate 60 and the upper filter plate 61 to form a solid dephosphorus removal agent storage chamber 62, so that the solid dephosphorus removal agent is provided with a specific storage space, and the solid dephosphorus removal agent will not flow, thereby ensuring that the solid dephosphorus removal agent is in full contact with the phosphorus-containing wastewater.

5 and 7 , the lower filter plate 60 is disc-shaped and arranged on the inner wall of the slip ring 21 , wherein the lower filter plate 60 is provided with filter holes, which are used for the phosphorus-containing wastewater to pass through the storage structure 6 of the solid phosphorus removal agent, so as to fully contact with the solid phosphorus removal agent in the storage structure 6 .

5 and 7 , the upper filter plate 61 is located on the inner wall of the slide ring 21 and above the lower filter plate 60 , providing a structural basis for the formation of the solid dephosphorization agent storage chamber 62 .

It should be noted that the upper filter plate 61 includes an upper plate body 611 with feed ports 610 arranged at equal intervals, and a rotatable filter baffle plate 612 is arranged below the feed port 610, and the feed port 610 is opened or closed with the rotation of the filter baffle plate 612. The filter baffle plate 612 is also provided with filter holes, which ensures that the phosphorus-containing wastewater passes through the storage structure 6 of the solid phosphorus removal agent, so as to fully contact with the solid phosphorus removal agent in the storage structure 6.

Based on the setting of the slip ring 21, this embodiment also discloses a structure that can drive the slip ring 21 to move in the liquid separation tank 20. Based on this structure, the solid dephosphorization agent in the storage structure 6 can be further contacted with the phosphorus-containing wastewater again, thereby ensuring the full reaction of the solid dephosphorization agent with the phosphorus-containing wastewater and ensuring the adequacy of purification. The structure is set as follows:

3 to 7, an outer extension rod 7 is provided in the slip ring 21. Preferably, the outer extension rod 7 is coaxially arranged with the slip ring 21, a central column 8 is arranged in the center of the outer shell, an outer protrusion A80 is arranged on the outer wall of the central column 8, and the inner end of the outer extension rod 7 abuts against the outer wall of the central column 8. The outer extension rod 7 rotates synchronously with the liquid guide ring 2. When the end of the outer extension rod 7 abuts against the outer protrusion A80, the outer extension rod 7 moves radially to the outside of the liquid guide ring 2, so as to fully contact with the phosphorus-containing wastewater to be purified flowing downward in the liquid separation tank 20 again.

It should be added that: in some embodiments, in order to ensure the stability of the position of the slip ring 21, a reset spring 71 is also provided in this embodiment, and the specific configuration is as follows: a connecting seat 70 is fixed to the outer wall of the outer extension rod 7, wherein the connecting seat 70 is a protruding structure sleeved on the outer wall of the outer extension rod 7, and the two ends of the reset spring 71 are respectively connected between the connecting seat 70 and the inner wall of the liquid guide ring 2. In the initial state, the slip ring 21 is located at the bottom of the liquid separation groove 20. When the outer extension rod 7 contacts the outer protrusion A80, the reset spring 71 is compressed. After the outer extension rod 7 is separated from the outer protrusion A80, the outer extension rod 7 is reset to the initial state under the drive of the spring force of the reset spring 71.

Based on the setting of the outer extension rod 7, this embodiment further discloses a structure that can drive the flow of wastewater to be treated in the slip ring 21, so that the wastewater to be treated and the solid dephosphorization agent dissolved therein fully react. Preferably, the structure includes a stirring blade sleeve 200 and a stirring blade 201.

5-7, the stirring blade sleeve 200 rotates on the inner wall of the liquid separation tank 20, and the stirring blade sleeve 8 is sleeved on the outer wall of the outer extension rod 7, and the stirring blade 201 is arranged on the outer wall of the stirring blade sleeve 200. The rotation of the stirring blade sleeve 200 causes the stirring blade 201 to rotate, thereby braking the flow of the phosphorus-containing wastewater dissolved with the solid phosphorus removal agent in the slip ring 21, and further increasing the solid phosphorus removal agent and the phosphorus in the phosphorus-containing wastewater.

The present embodiment also discloses a structure in which an outer extension rod 7 drives the stirring blade sleeve 8 to rotate. Referring to Figure 6, a rotation driving protrusion 72 is provided on the outer wall of the outer extension rod 7. Preferably, the rotation driving protrusion 72 is a hemispherical structure. Conversely, a spiral inner driving groove 202 is provided on the inner wall of the stirring blade sleeve 200. The rotation driving protrusion 72 slides in the inner driving groove 202. With the linear movement of the outer extension rod 7, the rotation driving protrusion 72 contacts the inner wall of the inner driving groove 202, thereby actuating the stirring blade sleeve 8 to rotate, and further actuating the stirring blade 201 to rotate, thereby braking the flow of phosphorus-containing wastewater dissolved with solid dephosphorus removal agent in the slip ring 21, so that the solid dephosphorus removal agent is fully contacted and reacted with phosphorus in the phosphorus-containing wastewater.

It should be added that in order to further increase the number of radial movements of the outer extension rod 7 relative to the liquid guide ring 2, in this embodiment, an outer protrusion B81 is also provided on the outer wall of the central column 8, thereby increasing the number of flows of phosphorus-containing wastewater containing solid dephosphorization agent dissolved in the slip ring 21.

Finally, based on the structural arrangement of the outer extension rod 7 and the filter baffle plate 612, this embodiment also discloses a structure that can open the feed port 610 as the outer extension rod 7 rotates. The structure is arranged as follows: the outer extension rod 7 is connected to the filter baffle plate 612 through a connecting structure 9, and the connecting structure 9 includes a lower connecting ring 90 fixed to the outer extension rod 7. This connection method can connect the outer end of the outer extension rod 7 and the inner wall of the lower connecting ring 90 in series through a plurality of connecting ribs, wherein the inner diameter of the lower connecting ring 90 is larger than the outer diameter of the lower filter plate 60, and the inner wall of the slip ring 21 is provided with a lower annular groove corresponding to the lower connecting ring 90; in addition, the lower connecting ring 90 is connected to the upper connecting ring 91 through a plurality of connecting ribs, and correspondingly, the inner wall of the slip ring 21 is provided with an upper annular groove corresponding to the upper connecting ring 91, and the outer wall of the filter baffle plate 612 is fixed to the inner wall of the upper connecting ring 91, and the upper connecting ring 91 is actuated to rotate as the lower connecting ring 90 rotates, thereby controlling the feed port 610 to be opened or closed. When the feed port 610 is opened, it helps the solid dephosphorus agent to enter the solid dephosphorus agent storage chamber 62 ; when the feed port 610 is closed, the solid dephosphorus agent is stably stored in the solid dephosphorus agent storage chamber 62 .

Furthermore, the present embodiment also discloses a structure for driving the outer extension rod 7 to rotate, the structure is composed of a circular arc gear 73 and an engaging protrusion 120, wherein an annular boss 12 is also fixed to the inner wall of the outer shell 1, the circular arc gear 73 is fixed to the outer end wall of the outer extension rod 7, the engaging protrusion 120 is arranged at the outer wall of the annular boss 12, and the engaging protrusion 120 is engaged with the circular arc gear 73. After the outer extension rod 7 rotates with the liquid guide ring 2, when the engaging protrusion 120 is engaged with the circular arc gear 73, the outer extension rod 7 is caused to rotate, thereby realizing the opening of the feed port 610 for discharging the solid dephosphorization agent into the solid dephosphorization agent storage chamber 62; when the engaging protrusion 120 is disengaged from the circular arc gear 73, under the action of the reset spring 71, the filter baffle 612 is caused to rotate in the opposite direction, thereby closing the feed port 610, and ensuring the stability of the solid dephosphorization agent placed in the solid dephosphorization agent storage chamber 62.

In addition, in this embodiment, a solid dephosphorus agent feed port 13 is also provided on the outer shell 1, so that when the feed port 610 is opened, the solid dephosphorus agent passes through the solid dephosphorus agent feed port 13 and the feed port 610 in sequence and is placed in the solid dephosphorus agent storage chamber 62.

Based on the setting of a wastewater treatment device for agricultural contaminated soil remediation, this embodiment also discloses a method for using the device, which includes the following steps:

S1. Phosphorus-containing wastewater flows into the liquid separation tank 20: the phosphorus-containing wastewater flows into the liquid separation tank 20 through the liquid inlet 10.

S2, the liquid guide ring 2 rotates: the motor 4 is started, and the liquid guide ring 2 rotates by driving the gear 5 and the gear ring 3. When the liquid separation groove 20 is separated from the liquid inlet 10, the liquid separation groove 20 and the inner wall of the outer shell 1 form a closed space, so that the phosphorus-containing wastewater is fully contacted and reacted with the solid phosphorus removal agent; in this process, the phosphorus-containing wastewater passes through the solid phosphorus removal agent storage chamber 62, so that the phosphorus-containing wastewater is in contact with the solid phosphorus removal agent for the first time, thereby removing phosphorus in the phosphorus-containing wastewater.

S3. Flow of phosphorus-containing wastewater in the slip ring 21: Referring to FIG. 3 , after the outer extension rod 7 rotates with the liquid guide ring 2, when the outer extension rod 7 hits the outer protrusion B81, the outer extension rod 7 moves radially relative to the liquid guide ring 2, and with the cooperation of the rotating drive protrusion 72 and the inner drive groove 202, the stirring blade sleeve 200 rotates, thereby causing the stirring blade 201 to rotate, and further braking the flow of phosphorus-containing wastewater dissolved with solid phosphorus removal agent in the slip ring 21, so that the solid phosphorus removal agent fully contacts and reacts with phosphorus in the phosphorus-containing wastewater.

S4. The phosphorus-containing wastewater contacts the solid phosphorus-removing agent in the solid phosphorus-removing agent storage chamber 62 for the second time: As the liquid guide ring 2 rotates, when the liquid guide ring 2 rotates to a position below half of its original position, the phosphorus-containing wastewater flows from the slip ring 21 to the inner wall of the outer shell 1 under the action of gravity, and passes through the solid phosphorus-removing agent storage chamber 62 in the process, causing the phosphorus-containing wastewater to contact the solid phosphorus-removing agent for the second time.

S5. The phosphorus-containing wastewater contacts the solid phosphorus-removing agent in the solid phosphorus-removing agent storage chamber 62 for the third time: As the liquid guide ring 2 rotates, the outer extension rod 7 contacts the outer protrusion A80, causing the slip ring 21 to move radially outward along the liquid separation groove 20, thereby causing the outer end of the slip ring 21 to squeeze the wastewater at its outer end, and the squeezed wastewater flows from the outer end of the solid phosphorus-removing agent storage chamber 62 to the inside of the slip ring 21, thereby achieving the third contact between the phosphorus-containing wastewater and the solid phosphorus-removing agent in the solid phosphorus-removing agent storage chamber 62.

S6. The phosphorus-containing wastewater contacts the solid phosphorus removal agent in the solid phosphorus removal agent storage chamber 62 for the fourth time and completes the discharge: as the liquid guide ring 2 rotates, when it rotates above the liquid outlet 11, the wastewater in the liquid separation tank 20 passes through the solid phosphorus removal agent storage chamber 62 and flows out from the liquid outlet 11. That is, when the wastewater in the liquid separation tank 20 completes the discharge, it also synchronously completes the fourth contact with the solid phosphorus removal agent in the solid phosphorus removal agent storage chamber 62.

S7. Refilling the solid dephosphorus agent in the solid dephosphorus agent storage chamber 62: When the liquid guide ring 2 rotates to below the solid dephosphorus agent feed port 13, the feed port 610 is opened through the cooperation of the circular arc gear 73 and the meshing protrusion 120. At this time, the solid dephosphorus agent can flow into the solid dephosphorus agent storage chamber 62 through the solid dephosphorus agent feed port 13 and the feed port 610 in turn.

It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (6)

1. A wastewater treatment device for agricultural contaminated soil remediation, comprising a hollow outer shell (1), characterized in that a liquid inlet (10) and a liquid outlet (11) are provided on the outer shell (1); A liquid guide ring (2) is rotatably disposed in the outer shell (1), a plurality of liquid separation grooves (20) are radially provided on the outer wall of the liquid guide ring (2), a slip ring (21) is slidably disposed in the liquid separation groove (20), and a storage structure (6) for a solid dephosphorization agent is disposed in the slip ring (21); The liquid inlet (10) is located above the liquid outlet (11); The storage structure (6) of the solid dephosphorizing agent comprises: a lower filter plate (60), the lower filter plate (60) being in a disc shape and arranged on the inner wall of the slip ring (21); an upper filter plate (61), the upper filter plate (61) being located on the inner wall of the slip ring (21) and above the lower filter plate (60); A gap is left between the lower filter plate (60) and the upper filter plate (61) to form a solid dephosphorization agent storage chamber (62); A gear ring (3) is fixed to the inner wall of one end of the liquid guide ring (2), a motor (4) is fixed to the outer wall of the outer shell (1), an output end of the motor (4) passes through the outer shell (1) and is fixedly connected to a driving gear (5), and the driving gear (5) is meshed with the gear ring (3); An outer extension rod (7) is arranged inside the slip ring (21), a center column (8) is arranged at the center of the outer shell, an outer wall of the center column (8) is provided with an outer protrusion A (80), and the inner end of the outer extension rod (7) abuts against the outer wall of the center column (8); A connecting seat (70) is fixed to the outer wall of the outer extension rod (7), and the connecting seat (70) and the inner wall of the liquid guide ring (2) are connected via a return spring (71). 2. A wastewater treatment device for agricultural contaminated soil remediation according to claim 1, characterized in that a sealing component is provided between the outer wall of the liquid guide ring (2) and the hollow inner wall of the outer shell (1), and the sealing component consists of an O-ring and a sealing ring. 3. A wastewater treatment equipment for agricultural contaminated soil remediation according to claim 2, characterized in that the upper filter plate (61) includes an upper disk body (611) with feed ports (610) arranged at equal intervals, and a rotatable filter baffle (612) is arranged below the feed port (610), and the feed port (610) is controlled to be opened or closed as the filter baffle (612) rotates. 4. A wastewater treatment device for agricultural contaminated soil remediation according to claim 3, characterized in that a stirring blade sleeve (200) is radially rotated on the inner wall of the liquid separation tank (20), the stirring blade sleeve (200) is sleeved on the outer wall of the outer extension rod (7), and the outer wall of the stirring blade sleeve (200) is provided with a plurality of stirring blades (201); The outer wall of the outer extension rod (7) is provided with a rotation driving protrusion (72), and the inner wall of the stirring blade sleeve (200) is provided with a spiral inner driving groove (202); The outer wall of the central column (8) is also provided with an outer protrusion B (81). 5. A wastewater treatment device for agricultural contaminated soil remediation according to claim 4, characterized in that the outer extension rod (7) is connected to the filter baffle (612) via a connecting structure (9), the connecting structure (9) comprises a lower connecting ring (90) fixed to the outer extension rod (7), the lower connecting ring (90) is connected to an upper connecting ring (91) via a plurality of connecting ribs, and the outer wall of the filter baffle (612) is fixed to the inner wall of the upper connecting ring (91); An annular boss (12) is also fixed to the inner wall of the outer shell (1), an arc gear (73) is fixed to the outer wall of the outer extension rod (7), and an engaging protrusion (120) is provided on the outer wall of the annular boss (12) for engaging with the arc gear (73); The outer shell (1) is also provided with a solid dephosphorization agent feed port (13). 6. A method for using the wastewater treatment equipment for agricultural contaminated soil remediation according to claim 5, characterized in that it comprises the following steps: S1, phosphorus-containing wastewater flows into the liquid separation tank (20): the phosphorus-containing wastewater flows into the liquid separation tank (20) through the liquid inlet (10); S2, the liquid guide ring (2) rotates: the motor (4) is started, and the liquid guide ring (2) rotates through the cooperation of the driving gear (5) and the gear ring (3). When the liquid separation groove (20) is separated from the liquid inlet (10), the liquid separation groove (20) and the inner wall of the outer shell (1) form a closed space, so that the phosphorus-containing wastewater is fully in contact with the solid phosphorus removal agent for reaction; the phosphorus-containing wastewater passes through the solid phosphorus removal agent storage chamber (62), so that the phosphorus-containing wastewater is in contact with the solid phosphorus removal agent for the first time, thereby removing phosphorus in the phosphorus-containing wastewater; S3, flow of phosphorus-containing wastewater in the slip ring (21): after the outer extension rod (7) rotates with the liquid guide ring (2), when the outer extension rod (7) contacts the outer protrusion B (81), the outer extension rod (7) moves radially relative to the liquid guide ring (2), and under the cooperation of the rotation drive protrusion (72) and the inner drive slide groove (202), the stirring blade sleeve (200) rotates, thereby causing the stirring blade (201) to rotate, further braking the flow of phosphorus-containing wastewater dissolved with solid phosphorus removal agent in the slip ring (21), so that the solid phosphorus removal agent fully contacts and reacts with phosphorus in the phosphorus-containing wastewater; S4, the phosphorus-containing wastewater comes into contact with the solid phosphorus-removing agent in the solid phosphorus-removing agent storage chamber (62) for the second time: as the liquid guide ring (2) rotates, when the liquid guide ring (2) rotates to a position below halfway, the phosphorus-containing wastewater flows from the sliding ring (21) to the inner wall of the outer shell (1) under the action of gravity, and the wastewater passes through the solid phosphorus-removing agent storage chamber (62), causing the phosphorus-containing wastewater to come into contact with the solid phosphorus-removing agent for the second time; S5, the phosphorus-containing wastewater contacts the solid phosphorus removal agent in the solid phosphorus removal agent storage chamber (62) for the third time: as the liquid guide ring (2) rotates, the outer extension rod (7) abuts against the outer protrusion A (80), causing the slip ring (21) to move radially outward along the liquid separation groove (20), thereby causing the outer end of the slip ring (21) to squeeze the wastewater at its outer end, and the squeezed wastewater flows from the outer end of the solid phosphorus removal agent storage chamber (62) into the slip ring (21), thereby achieving the third contact between the phosphorus-containing wastewater and the solid phosphorus removal agent in the solid phosphorus removal agent storage chamber (62); S6, the phosphorus-containing wastewater contacts the solid phosphorus removal agent in the solid phosphorus removal agent storage chamber (62) for the fourth time and completes discharge: as the liquid guide ring (2) rotates to above the liquid outlet (11), the wastewater in the liquid separation tank (20) passes through the solid phosphorus removal agent storage chamber (62) and flows out from the liquid outlet (11), that is, when the wastewater in the liquid separation tank (20) completes discharge, it also simultaneously completes the fourth contact with the solid phosphorus removal agent in the solid phosphorus removal agent storage chamber (62); S7. Replenishing the solid dephosphorus agent in the solid dephosphorus agent storage chamber (62): When the liquid guide ring (2) rotates to below the solid dephosphorus agent feed port (13), the feed port (610) is opened by the cooperation of the circular arc gear (73) and the meshing protrusion (120). At this time, the solid dephosphorus agent can flow into the solid dephosphorus agent storage chamber (62) through the solid dephosphorus agent feed port (13) and the feed port (610) in sequence.