CN209953487U

CN209953487U - Contaminated soil leaching and repairing system

Info

Publication number: CN209953487U
Application number: CN201920727259.4U
Authority: CN
Inventors: 丁军; 张绵军; 丁宁; 张宇吉; 张光远
Original assignee: Henan Segen Environmental Technology Co Ltd
Current assignee: Henan Segen Environmental Technology Co Ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2020-01-17
Anticipated expiration: 2029-05-21

Abstract

The utility model relates to the technical field of soil remediation, in particular to a leaching remediation system for contaminated soil, which solves the problem of poor recycling rate of leaching liquor of the remediation system in the prior art, and comprises a leaching tank, a sedimentation tank, a liquid storage tank, a treatment tank and a circulating pipe, wherein one end of the leaching tank is provided with a through hole, a flange is fixed with a soil adding channel, the side wall of the leaching tank away from the soil adding channel is provided with a slurry discharging hole, the flange is fixed with a slurry discharging pipe, one end of the slurry discharging pipe extends into the sedimentation tank, the outer top surface of the leaching tank is provided with a motor through a motor base, the output end of the motor is fixed with a rotating rod through a coupler, the bottom of the rotating rod is connected with a stirring rod, the leaching liquor flows into the connecting pipe and is sprayed in the leaching tank through a spraying head, the control motor drives the rotating rod and the stirring rod to rotate simultaneously, and stirs the soil added to the, the contact sufficiency and uniformity of the leacheate and the soil are improved.

Description

Contaminated soil leaching and repairing system

Technical Field

The utility model relates to a soil remediation technical field especially relates to a drip washing repair system who pollutes soil.

Background

At present, there are many methods for remedying contaminated soil, among which the leaching method is a technique of injecting water or an eluting agent such as an aqueous solution containing a rinsing aid, an acid-base solution, a complexing agent or a surfactant into contaminated soil or a sediment to promote dissolution or migration of contaminants in the soil environment, mixing the solvent with the contaminated soil, then extracting a liquid containing the contaminants from the soil, and performing separation treatment.

However, after the existing soil is treated by using the leacheate, the leacheate is difficult to recycle, and secondary environmental pollution is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the recovery rate of the remediation system is poor in the recycle rate of the leaching solution in the prior art, and providing a leaching remediation system for polluted soil.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a leaching remediation system for contaminated soil comprises a leaching tank, a sedimentation tank, a liquid storage tank, a treatment tank and a circulating pipe, wherein one end of the leaching tank is provided with a through hole, a soil adding channel is fixed on a flange, the side wall of the leaching tank, which is far away from the soil adding channel, is provided with a pulp discharging hole, the flange is fixed with a pulp discharging pipe, one end of the pulp discharging pipe extends into the sedimentation tank, the outer top surface of the leaching tank is provided with a motor through a motor base, the output end of the motor is fixed with a rotating rod through a coupler, and the bottom of the rotating rod is connected with a stirring rod;

the inner top surface of the leaching tank, which is close to the soil adding channel, is provided with a connecting pipe, the bottom of the connecting pipe is provided with a spray head, one end of the connecting pipe is fixed on a liquid conveying shell in a flange mode, one end of the liquid conveying shell penetrates through the leaching tank and is connected with a liquid discharge pipe, one end of the liquid discharge pipe is connected to a liquid storage tank, the other end of the liquid storage tank is connected with a circulating pipe, one end of the circulating pipe is connected with a treatment tank, and the treatment tank and the leaching tank are connected through a collecting pipe.

Preferably, the rotary rod is arranged in the inner cavity of the spray washing tank, two stirring rods are fixedly mounted at the bottom of the rotary rod through bolts, and the stirring rods are symmetrical relative to the rotary rod.

Preferably, a filter screen is arranged in the inner cavity of the leaching tank close to the pulp discharge pipe.

Preferably, the bottom of the spray washing tank is provided with a through hole, the flange is fixed with a collecting pipe, and a water pump is arranged between the collecting pipes.

Preferably, one end of the sedimentation tank is provided with a through hole, recovery pipes are fixed on the through hole through flanges, and a water pump is arranged between the recovery pipes.

Preferably, the liquid storage tank and the treatment tank are internally provided with stirring paddles, the stirring paddles are driven by a motor to operate, and the liquid storage tank and the treatment tank are provided with material injection pipes at the upper parts.

The utility model has the advantages that:

1. the utility model discloses, the eluent circulation is through the shower head in to the connecting tube, sprays in the drip washing jar, and the control motor is rotatory when driving rotary rod and puddler, stirs adding the soil to in the drip washing jar, has improved the sufficiency and the homogeneity of eluent and soil contact.

2. The utility model discloses, utilize the processing jar to handle the leacheate, the leacheate after the purification will pass through the connection of drain pipe, water pump and circulating pipe, circulate to holding in the liquid jar, play the effect of recycling leacheate, improved the resource utilization rate to the leacheate.

Drawings

Fig. 1 is a schematic structural diagram of a contaminated soil leaching remediation system provided by the present invention;

fig. 2 is a schematic view of a overlooking structure of a connecting pipe connecting structure of a leaching remediation system for contaminated soil according to the present invention.

In the figure: 1 spray washing tank, 2 connecting pipes, 3 liquid discharge pipes, 4 transfusion shells, 5 liquid storage tanks, 6 spray headers, 7 circulating pipes, 8 treatment tanks, 9 liquid discharge pipes, 10 liquid inlet pipes, 11 recovery pipes, 12 collecting pipes, 13 sedimentation tanks, 14 slurry discharge pipes, 15 stirring rods and 16 soil adding channels.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example (b): referring to fig. 1-2, a leaching remediation system for contaminated soil comprises a leaching tank 1, a sedimentation tank 13, a liquid storage tank 5, a treatment tank 8 and a circulating pipe 7, wherein one end of the leaching tank 1 is provided with a through hole, a soil adding channel 16 is fixed on a flange, a pulp discharging hole is formed in the side wall of the leaching tank 1 far away from the soil adding channel 16, a pulp discharging pipe 14 is fixed on the flange, a filter screen is arranged in the inner cavity of the leaching tank 1 close to the pulp discharging pipe 14, one end of the pulp discharging pipe 14 extends into the sedimentation tank 13, one end of the sedimentation tank 13 is provided with a through hole, a recovery pipe 11 is fixed on the flange, a water pump is arranged between the recovery pipes 11, the outer top surface of the leaching tank 1 is provided with a motor through a motor base, the output end of the motor is fixed with a rotating rod through a coupler, the bottom of the rotating rod is connected with a stirring rod 15, the rotating rod is arranged in the inner cavity of the, the stirring rods 15 are symmetrical about the rotating rods, through holes are formed in the bottom of the spraying tank 1, collecting pipes 12 are fixed to the bottoms of the spraying tank 1 through flanges, and a water pump is arranged between the collecting pipes 12;

wherein, drip washing jar 1 is close to soil and adds interior top surface that passageway 16 was provided with connecting pipe 2, and the bottom of connecting pipe 2 is provided with shower head 6, the one end flange of connecting pipe 2 is fixed on infusion shell 4, the one end of infusion shell 4 is passed drip washing jar 1 and is connected with fluid-discharge tube 3, the one end of fluid-discharge tube 3 is connected at holding liquid jar 5, the other end that holds liquid jar 5 is connected with circulating pipe 7, the one end of circulating pipe 7 is connected with processing jar 8, connect through collecting pipe 12 between processing jar 8 and the drip washing jar 1, the inside that holds liquid jar 5 and processing jar 8 all is provided with the stirring rake, and the stirring rake passes through the motor and drives the operation, and the upper portion that holds liquid jar 5 and processing jar 8.

Specifically, the screened soil is added into the leaching tank 1 through the soil adding channel 16, the leaching solution is added into the liquid storage tank 5 through a material injection pipe arranged on the liquid storage tank 5, the motor drives the stirring blades to rotate, the added leaching solution is prepared into the leaching solution, the leaching solution is circulated into the infusion shell 4 through the liquid discharge pipe 3 after the water pump is started, the leaching solution is circulated into the connecting pipe 2 and is sprayed into the leaching tank 1 through the spray header 6, the motor is controlled to drive the rotating rod and the stirring rod 15 to rotate simultaneously, the soil added into the leaching tank 1 is stirred, and the contact sufficiency and uniformity of the leaching solution and the soil are improved;

further, after the soil in the leaching tank 1 is leached, the leaching solution carrying metal pollutants passes through the filter screen and circulates to the treatment tank 8 through the collecting pipe 12, the treated soil slurry is conveyed to the sedimentation tank 13 through the slurry discharge pipe 14, the slurry is subjected to secondary sedimentation in the sedimentation tank 13, the leaching solution generated after sedimentation circulates to the liquid inlet pipe 10 through the recovery pipe 11 after the water pump is started, and circulates to the treatment tank 8 through the liquid inlet pipe 10, the leaching solution is treated by the treatment tank 8, the neutralizing solution sodium hydroxide is added into the treatment tank 8 through the liquid injection pipe arranged on the treatment tank 8, the leaching solution carrying heavy metal objects is neutralized and separated, the purified leaching solution circulates to the liquid storage tank 5 through the connection of the liquid outlet pipe 9, the water pump and the circulating pipe 7, and the effect of recycling and reusing the leaching solution is achieved, the resource utilization rate of the leacheate is improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A leaching remediation system for contaminated soil comprises a leaching tank (1), a sedimentation tank (13), a liquid storage tank (5), a treatment tank (8) and a circulating pipe (7), wherein one end of the leaching tank (1) is provided with a through hole, and a soil adding channel (16) is fixed on a flange, and is characterized in that a slurry discharging hole is formed in the side wall, away from the soil adding channel (16), of the leaching tank (1), a slurry discharging pipe (14) is fixed on the flange, one end of the slurry discharging pipe (14) extends into the sedimentation tank (13), a motor is arranged on the outer top surface of the leaching tank (1) through a motor base, a rotating rod is fixed on the output end of the motor through a coupler, and a stirring rod (15) is connected to the bottom of the rotating rod;

the soil spraying and washing device is characterized in that a connecting pipe (2) is arranged on the inner top surface, close to the soil adding channel (16), of the spraying and washing tank (1), a spray head (6) is arranged at the bottom of the connecting pipe (2), one end of the connecting pipe (2) is fixed to a liquid conveying shell (4) in a flange mode, one end of the liquid conveying shell (4) penetrates through the spraying and washing tank (1) and is connected with a liquid discharging pipe (3), one end of the liquid discharging pipe (3) is connected to a liquid storage tank (5), the other end of the liquid storage tank (5) is connected with a circulating pipe (7), one end of the circulating pipe (7) is connected with a processing tank (8), and the processing tank (8) is connected with the spraying and washing tank (.

2. The leaching remediation system for contaminated soil according to claim 1, wherein the rotating rod is disposed in the inner cavity of the leaching tank (1), and two stirring rods (15) are fixedly mounted on the bottom of the rotating rod through bolts, and the stirring rods (15) are symmetrical with respect to the rotating rod.

3. The leaching remediation system for contaminated soil according to claim 2, wherein a filter screen is disposed in the inner cavity of the leaching tank (1) adjacent to the slurry discharge pipe (14).

4. The leaching remediation system for contaminated soil according to claim 1, wherein the bottom of the leaching tank (1) is provided with through holes, the collecting pipes (12) are fixed on flanges, and a water pump is arranged between the collecting pipes (12).

5. The leaching remediation system for contaminated soil according to claim 1, wherein one end of the settling tank (13) is provided with a through hole and is flanged with a recovery pipe (11), and a water pump is arranged between the recovery pipes (11).

6. The leaching remediation system for contaminated soil according to claim 1, wherein stirring paddles are arranged inside the liquid storage tank (5) and the treatment tank (8), the stirring paddles are driven by a motor to operate, and a material injection pipe is arranged on the upper portion of each of the liquid storage tank (5) and the treatment tank (8).