CN-121107486-B - Phosphogypsum leachate treatment method and phosphogypsum leachate treatment device

Abstract

The invention discloses a phosphogypsum leachate treatment method and a phosphogypsum leachate treatment device, which relate to the technical field of sewage treatment and comprise a reaction tank and a supporting seat fixedly connected to the inner side of the reaction tank, wherein a stirring rod is rotationally connected to the inner side of the supporting seat, a first driving motor is arranged at the top of the supporting seat, and the output end of the first driving motor is fixedly connected with the stirring rod; and the suction auxiliary device is positioned at the inner side of the reaction tank and is used for assisting in sucking the sewage at the bottom of the reaction tank to the top and discharging the mixed medicament. The invention enables sewage to form 'bottom-top' circulating flow by arranging the suction aid, the process can avoid the local concentration of the bottom sewage (or concentration of pollutants) caused by gravity deposition, and simultaneously enables sewage which is not fully mixed at the top to be contacted with sewage circulating at the bottom again, so that the sewage concentration in the whole reaction tank is more uniform.

Inventors

• ZHAO HONGGUI

Assignees

• 武汉飞博乐环保工程有限公司

Dates

Publication Date

20260508

Application Date

20250902

Claims (5)

1. 1. Phosphogypsum leachate treatment device is characterized by comprising: The reaction device comprises a reaction tank (1) and a supporting seat (2) fixedly connected to the inner side of the reaction tank (1), wherein a stirring rod (3) is rotatably connected to the inner side of the supporting seat (2), a first driving motor (4) is mounted at the top of the supporting seat (2), and the output end of the first driving motor (4) is fixedly connected with the stirring rod (3); the suction auxiliary device is positioned at the inner side of the reaction tank (1) and is used for assisting in sucking sewage at the bottom of the reaction tank (1) to the top and discharging mixed medicines, the suction auxiliary device comprises a fixed shell (6) fixedly connected to the bottom of the stirring rod (3), and the outer wall of the fixed shell (6) is connected with a guide shell (7) in a sliding manner; A shrinkage adjuster, located between the fixed housing (6) and the guide housing (7), for adjusting the position of the guide housing (7); an extrusion aid located inside the stationary housing (6) for crushing particles or flocs entering inside the stationary housing (6); The shrinkage adjuster comprises two moving blocks (25) fixedly connected to the inner side of the guide shell (7), guide grooves matched with the moving blocks (25) are formed in the outer wall of the fixed shell (6), the guide shell (7) is slidably connected with the fixed shell (6) through the two moving blocks (25) fixedly connected to the inner side, and a first connecting spring (16) is arranged between the moving blocks (25) and the guide grooves; The shrinkage adjuster further comprises connecting blocks (17) fixedly connected to the outer walls of the two sides of the guide shell (7), the outer walls of the two sides of the fixed shell (6) are fixedly connected with second fixed shells (14), one end of each second fixed shell (14) is provided with a second driving motor (15), the output end of each second driving motor (15) is fixedly connected with a winding roller (19), one end of each winding roller (19) penetrates through the inner side of each second fixed shell (14) and is rotationally connected with each second fixed shell (14), a traction rope (18) is wound on the outer wall of each winding roller (19), and one end of each traction rope (18) is fixedly connected with each connecting block (17); The extrusion auxiliary piece comprises a cavity (24) formed in the inner wall of the fixed shell (6), two groups of connecting plates (21) are connected to the inner side of the cavity (24) in a sliding mode, two connecting plates (21) are arranged in each group, the two connecting plates (21) are symmetrically arranged with the central axis of the fixed shell (6), a plurality of crushing cones (22) are fixedly connected to the inner side of each connecting plate (21), the crushing cones (22) between every two connecting plates (21) are arranged in a staggered mode, and a second connecting spring (23) is arranged between the cavity (24) and each connecting plate (21); The extrusion auxiliary piece further comprises a spherical rod (20) fixedly connected to one side of the connecting plate (21), one end of the spherical rod (20) penetrates through the outer portion of the fixed shell (6), a plurality of arch blocks (26) are fixedly connected to the inner side of the guide shell (7), and the arch blocks (26) are equidistantly distributed on the inner side of the guide shell (7).
2. 2. The phosphogypsum percolate treatment device according to claim 1, characterized in that the pumping aid further comprises a first fixing shell (8) fixedly connected to the bottom of the supporting seat (2), the first fixing shell (8) is rotationally connected with the stirring rod (3), a conveying pump (5) is installed at the top of the supporting seat (2), the input end of the conveying pump (5) is fixedly connected with a first guide pipe (10), one end of the first guide pipe (10) penetrates through to the inner side of the first fixing shell (8), the output end of the conveying pump (5) is fixedly connected with a second guide pipe (13), a guide hole communicated with the fixing shell (6) is formed in the inner side of the stirring rod (3), a guide hole (9) communicated with the inner guide hole is formed in the outer side of the stirring rod (3), and a medicament adding component is arranged on one side of the first fixing shell (8).
3. 3. The phosphogypsum percolate treatment device according to claim 2, characterized in that the medicament adding assembly comprises a hanging seat (27) fixedly connected to one side of the supporting seat (2), a storage hopper (12) is fixedly connected to the top of the hanging seat (27), a discharging opening (31) penetrating to the bottom of the hanging seat (27) is formed in the inner side of the storage hopper (12), and a medicament delivery pipe (11) is fixedly connected to the bottom of the discharging opening (31).
4. 4. The phosphogypsum percolate treatment device according to claim 3, characterized in that the medicament adding assembly further comprises a rotating rod (29) rotatably connected to the inner side of the hanging seat (27), the outer wall of the rotating rod (29) is fixedly connected with a plurality of separation plates (30), the separation plates (30) are distributed around the outer wall of the rotating rod (29) at equal intervals, a third driving motor (28) is mounted on one side of the hanging seat (27), and the output end of the third driving motor (28) penetrates through the inner side of the hanging seat (27) and is fixedly connected with the rotating rod (29).
5. 5. A phosphogypsum leachate treatment method, which is characterized in that the phosphogypsum leachate treatment device is adopted, and comprises the following steps: S1, when phosphogypsum percolate enters the inner side of a reaction tank (1) to be treated, adding a medicament into the reaction tank (1), and then starting a first driving motor (4), wherein the output end of the first driving motor (4) drives a stirring rod (3) to mix and stir sewage and the medicament; S2, starting the conveying pump (5) in the sewage treatment process, wherein the conveying pump (5) attempts to suck the inner side of the guide shell (7) through a guide hole formed in the inner side of the stirring rod (3), so that sewage at the bottom of the reaction tank (1) can flow into the first fixed shell (8) through the stirring rod (3) and is discharged from the top of the reaction tank (1) through the second guide pipe (13), in the process, the third driving motor (28) is started, and the output end of the third driving motor (28) drives the rotating rod (29) to slowly rotate, so that powder-state medicament in the inner side of the storage hopper (12) can be intermittently conveyed into the first fixed shell (8) through the medicament conveying pipe (11) to be mixed with the sewage through the second guide pipe (13), and then is discharged into the reaction tank (1) again through the second guide pipe (13); S3, when sewage enters the guide shell (7), starting the second driving motor (15), wherein the output end of the second driving motor (15) can rotate forward and reversely under the control of the PLC, and when the output end of the second driving motor (15) rotates forward, the winding roller (19) is driven to wind the traction rope (18), so that the connecting block (17) pulls the guide shell (7) to move transversely, and the position of the suction port is adjusted; S4, when the guide shell (7) moves towards the direction of the fixed shell (6), the two groups of arched blocks (26) are driven to synchronously move, and when the lowest point of one side inclined surface of each arched block (26) is contacted with the spherical rod (20), the spherical rod (20) is pushed to drive the crushing cone (22) to move towards the middle position of the fixed shell (6) through the connecting plate (21), and due to the fact that the two groups of symmetrically arranged crushing cones (22) are arranged in a staggered mode, floccules or solid impurities passing through a channel of the fixed shell (6) can be crushed.

Description

Phosphogypsum leachate treatment method and phosphogypsum leachate treatment device Technical Field The invention relates to the technical field of sewage treatment, in particular to a phosphogypsum leachate treatment method and device. Background The phosphogypsum percolate is wastewater containing various pollutants, which is formed by leaching and soaking after rainwater, surface water or groundwater infiltrates into a phosphogypsum pile body in a phosphogypsum storage yard or storage process, and has complex components and strong pollution, and is one of main environmental risk points in the phosphorus chemical industry. When phosphogypsum leachate sewage is subjected to field treatment, core pollutants such as phosphate, sulfate, heavy metal, fluoride and the like are removed generally through chemical precipitation, flocculation and other means, however, when the phosphogypsum leachate sewage is fed into a treatment tank to react with a medicament, the medicament is poured into the sewage, and then stirring treatment is carried out through a motor-driven stirring blade, the prior art generally only relies on a stirring paddle to carry out single mechanical stirring, the stirring range is limited (especially, the bottom of a reaction tank is easy to form a stirring dead angle "), high-concentration pollutants deposited at the bottom (such as particles, heavy metal and the like in the phosphogypsum leachate) are difficult to be fully stirred, and the phosphogypsum leachate contains a large amount of high-density pollutants (such as phosphogypsum particles, heavy metal precipitates, suspended matters and the like) which are far greater than water, and the gravity sedimentation trend is naturally present: The stirring strength in the prior art is generally insufficient to completely counteract the sedimentation trend, when stirring, the upper sewage flows faster, and pollutants are temporarily dispersed, but the lower sewage flows slowly, the pollutants are easily deposited to the bottom of the tank gradually under the action of gravity to form high-concentration accumulation, so that the sewage and the medicament are unevenly mixed, and the sewage treatment efficiency is low. Disclosure of Invention The invention aims to solve the problems that the stirring strength in the prior art is generally insufficient to completely counteract the sedimentation trend, the flow of upper sewage is faster, pollutants are temporarily dispersed, the flow rate of lower sewage is low, the pollutants are easy to gradually deposit to the bottom of a tank under the action of gravity to form high-concentration accumulation, and the sewage and a medicament are unevenly mixed, and provides a phosphogypsum percolate treatment method and a phosphogypsum percolate treatment device. The phosphogypsum percolate treatment device comprises a reaction tank and a supporting seat fixedly connected to the inner side of the reaction tank, wherein a stirring rod is rotatably connected to the inner side of the supporting seat, a first driving motor is installed at the top of the supporting seat, the output end of the first driving motor is fixedly connected with the stirring rod, a suction auxiliary device is positioned at the inner side of the reaction tank and used for assisting in sucking sewage at the bottom of the reaction tank to the top and discharging mixed medicines, the suction auxiliary device comprises a fixed shell fixedly connected to the bottom of the stirring rod, a guide shell is connected to the outer wall of the fixed shell in a sliding manner, a shrinkage adjuster is positioned between the fixed shell and the guide shell and used for adjusting the position of the guide shell, and an extrusion auxiliary piece is positioned at the inner side of the fixed shell and used for crushing particles or floccules entering the inner side of the fixed shell. As still further aspects of the invention: the suction assist device further comprises a first fixing shell fixedly connected to the bottom of the supporting seat, the first fixing shell is rotationally connected with the stirring rod, the top of the supporting seat is provided with a conveying pump, the input end of the conveying pump is fixedly connected with a first guide pipe, one end of the first guide pipe penetrates through the inner side of the first fixing shell, the output end of the conveying pump is fixedly connected with a second guide pipe, a guide hole communicated with the fixing shell is formed in the inner side of the stirring rod, a guide hole communicated with the inner guide hole is formed in the outer side of the stirring rod, and a medicament adding component is arranged on one side of the first fixing shell. As a still further proposal of the invention, the medicament adding component comprises a hanging seat fixedly connected with one side of the supporting seat, a storage bucket is fixedly connected with the top of the hanging seat, a discharging opening