In-situ injection remediation equipment for contaminated soil

Abstract

The utility model provides in-situ injection remediation equipment for contaminated soil, which comprises a medicament activation tank, a medicament storage tank, an air compressor, an air storage tank and a pneumatic diaphragm pump, the medicament activation tank is communicated with the medicament storage tank through a pipeline, the medicament storage tank is connected with the pneumatic diaphragm pump, the pneumatic diaphragm pump is connected with the air storage tank, and the air compressor is connected with the air storage tank. The air storage tank is connected with the air compressor, a hose is inserted into the rear end of the pneumatic diaphragm pump, and the tail end of the hose is communicated with the interior of the injection well. According to the in-situ injection repair equipment, an agent preparation / storage system and an injection system are intensively designed and integrated into a container, the in-situ injection repair equipment can be loaded by a truck, the civil engineering cost is greatly reduced, and the construction efficiency is improved. And meanwhile, the flexibility of the in-situ injection technology is improved. The position of equipment can be adjusted at any time according to the position of an injection well, complicated injection pipeline system design is reduced, and the injection pressure can be controlled in real time according to on-site injection conditions.

Description

Technical Field

[0001] The utility model relates to the field of contaminated soil remediation, and particularly to an in-situ injection remediation device for contaminated soil. Background Technique

[0002] Common remediation technologies for contaminated soil include soil washing technology, incineration treatment technology, electrokinetic remediation technology, solidification / stabilization treatment technology, off-site landfill technology, in-situ barrier technology, vitrification treatment technology, vegetation restoration technology, etc.

[0003] The in-situ injection technology borrows certain equipment to inject chemical agents underground. Through the physical and chemical interaction between the chemical agents and pollutants, it reduces the mobility of pollutants and makes the toxicity of pollutants decrease or become non-toxic.

[0004] The in-situ injection technology performs remediation in the original location, does not require excavation and transportation of soil, and has a relatively low remediation cost. However, it requires a long operation time and remediation cycle, and is greatly affected by the characteristics of the site itself. The remediation effect and remediation cycle have a large degree of uncertainty. Therefore, the in-situ remediation technology is generally applied to contaminated sites with a large pollution area, deep pollutant migration, low pollution concentration, and no urgent development and utilization.

[0005] Traditional in-situ injection remediation systems include a chemical agent preparation / storage system, chemical agent injection wells (holes), and a chemical agent injection system (injection and agitation). A large number of injection pipelines and supporting equipment rooms and chemical agent rooms need to be built for the chemical agent preparation / storage system and the injection system, and the civil engineering cost is relatively high. Content of the Utility Model

[0006] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an in-situ injection remediation device for contaminated soil to solve the problems raised in the above background technique. The utility model conducts an intensive design on the chemical agent preparation / storage system and the injection system, integrates them into a container, and can be loaded by a truck, greatly reducing the civil engineering cost and increasing the flexibility of the in-situ injection technology at the same time.

[0007] To achieve the above purpose, the utility model is realized through the following technical solutions: An in-situ injection remediation device for contaminated soil includes a remediation device body. The remediation device body includes a chemical agent activation tank, a chemical agent storage tank, an air compressor, an air storage tank, and a pneumatic diaphragm pump. The chemical agent activation tank is connected to the chemical agent storage tank through a pipeline. The chemical agent storage tank is connected to the pneumatic diaphragm pump. The pneumatic diaphragm pump is connected to the air storage tank. The air storage tank is connected to the air compressor. A hose is inserted at the rear end of the pneumatic diaphragm pump, and the end of the hose is connected to the inside of the injection well. Independent mixers are inserted inside the chemical agent activation tank and the chemical agent storage tank, and a control system is installed in the remediation device body.

[0008] Further, a valve is installed between the chemical agent activation tank and the chemical agent storage tank. The chemical agent activation tank is used for dissolving and activating the in-situ injection chemical agent, and the agitator is used for storing the activated in-situ injection chemical agent.

[0009] Further, the agitator includes a mixing pump and mixing paddles, and the agitator is used for uniformly mixing the chemical agent.

[0010] Further, the pneumatic diaphragm pump is used for in-situ injection and is powered by an air compressor. The injection pressure of the pneumatic diaphragm pump can be adjusted by adjusting the intake air pressure, and the number of the pneumatic diaphragm pumps is two.

[0011] Further, the connection structure at the end of the hose includes threaded connection or flange connection.

[0012] Further, the air storage tank is matched with the air compressor. A pressure gauge and a valve are arranged between the air storage tank and the pneumatic diaphragm pump. The air storage tank adjusts the air pressure according to the effect of in-situ injection, and the air storage tank is used for controlling the injection pressure.

[0013] Further, the air compressor is used for providing injection power for the pneumatic diaphragm pump. A pressure gauge and a valve are arranged between the air storage tank and the air compressor.

[0014] Further, pressure gauges and valves are arranged between the pneumatic diaphragm pump and the injection well and between the pneumatic diaphragm pump and the chemical agent storage tank.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. The in-situ injection repair equipment for contaminated soil integrates the chemical agent preparation / storage system and the injection system, integrates them into a container, and can be loaded by a truck, greatly reducing the civil engineering cost and increasing the flexibility of the in-situ injection technology at the same time.

[0017] 2. The in-situ injection repair equipment for contaminated soil is designed to be vehicle-mounted. It can adjust the equipment position at any time according to the position of the injection well, reducing the design of the complicated injection pipeline system. With the help of the equipment pressure control system, the injection pressure can be controlled in real time according to the on-site injection situation. Description of the Drawings

[0018] Figure 1 It is a connection structure diagram of an in-situ injection repair equipment for contaminated soil according to the present utility model;

[0019] Figure 2 It is a layout plan of an in-situ injection repair equipment for contaminated soil according to the present utility model;

[0020] In the figure: 1. Chemical agent activation tank; 2. Chemical agent storage tank; 3. Pneumatic diaphragm pump; 4. Air compressor; 5. Air storage tank; 6. Mixer; 7. Hose; 8. Pressure gauge; 9. Valve; 10. Control system. Detailed implementation mode

[0021] To make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with the detailed implementation mode.

[0022] Please refer to Figures 1 to 2 , the present utility model provides the following technical solutions: A device for in-situ injection and remediation of contaminated soil, including a remediation device body, the remediation device body includes a chemical agent activation tank 1, a chemical agent storage tank 2, an air compressor 4, an air storage tank 5 and a pneumatic diaphragm pump 3. The chemical agent activation tank 1 is connected to the chemical agent storage tank 2 through a pipeline. The chemical agent storage tank 2 is connected to the pneumatic diaphragm pump 3. The pneumatic diaphragm pump 3 is connected to the air storage tank 5. The air storage tank 5 is connected to the air compressor 4. And a hose 7 is inserted at the rear end of the pneumatic diaphragm pump 3. The end of the hose 7 is connected to the inside of the injection well. Independent mixers 6 are inserted inside both the chemical agent activation tank 1 and the chemical agent storage tank 2. A control system 10 is carried on the remediation device body.

[0023] This in-situ injection remediation device intensively designs the chemical agent preparation / storage system and the injection system, integrates them into a container, and can be loaded by a truck, greatly reducing the civil engineering cost. At the same time, it increases the flexibility of the in-situ injection technology. Its overall design is vehicle-mounted, and the device position can be adjusted at any time according to the position of the injection well, reducing the design of the complicated injection pipeline system. With the help of the device pressure control system 10, the injection pressure can be controlled in real time according to the on-site injection situation.

[0024] Among them:

[0025] Chemical agent activation tank 1: Used for the dissolution and activation of in-situ injection chemical agents. The type of chemical agent can be flexibly selected according to the pollutants to be treated. A stirring pump and stirring blades are set to help the chemical agent mix evenly;

[0026] Chemical agent storage tank 2: Used for storing the in-situ injection chemical agents after activation. A stirring pump and stirring blades are set to help the chemical agent mix evenly;

[0027] Air compressor 4: Provides injection power for the pneumatic diaphragm pump 3;

[0028] Air storage tank 5: Matched with the air compressor 4, a pressure gauge 8 and a valve 9 are set, and the air pressure can be adjusted according to the in-situ injection effect, so as to control the injection pressure;

[0029] Pneumatic diaphragm pump 3: Used for in-situ injection, powered by an air compressor 4. The injection pressure can be adjusted by regulating the intake air pressure. When the injection pressure is too high and there is slurry gushing out underground, the injection pressure can be reduced. When the injection pressure is insufficient, the intake air pressure can be increased to boost the injection pressure. The rear end is threadedly connected or flange-connected to the injection well using a hose 7.

[0030] Specifically, the in-situ injection agent is dissolved and activated through the agent activation tank 1. During this process, the agent is stirred by the built-in independent stirrer 6 to ensure uniform mixing. Then, the dissolved and activated agent is transported to the agent storage tank 2, and the agent storage tank 2 is used to store the activated agent. During the storage process, continuous stirring is also carried out with the help of the stirrer 6. When in use, in-situ injection is performed through the pneumatic diaphragm pump 3, and the pneumatic diaphragm pump 3 is powered by the air compressor 4. Finally, the in-situ injection agent in the agent storage tank 2 is transported to the hose 7 and then through the hose 7 into the injection well, ultimately completing the in-situ injection and remediation process of the contaminated soil.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms.

[0032] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An in-situ injection remediation device for contaminated soil, comprising a remediation device body, characterized in that: The repair device body comprises a drug activation tank (1), a drug storage tank (2), an air compressor (4), an air storage tank (5) and a pneumatic diaphragm pump (3); the drug activation tank (1) is connected to the drug storage tank (2) through a pipeline; the drug storage tank (2) is connected to the pneumatic diaphragm pump (3); the pneumatic diaphragm pump (3) is connected to the air storage tank (5); the air storage tank (5) is connected to the air compressor (4); a hose (7) is inserted at the rear end of the pneumatic diaphragm pump (3); the end of the hose (7) is connected to the inside of the injection well; independent mixers (6) are inserted inside the drug activation tank (1) and the drug storage tank (2); and a control system (10) is mounted in the repair device body.

2. The in-situ injection remediation equipment for contaminated soil according to claim 1 is characterized by: A valve (9) is installed between the medicine activation tank (1) and the medicine storage tank (2); the medicine activation tank (1) is used for dissolving and activating the in-situ injected medicine, and the mixer (6) is used for storing the activated in-situ injected medicine.

3. The in-situ injection remediation equipment for contaminated soil according to claim 2 is characterized by: The stirrer (6) comprises a stirring pump and a stirring paddle, and the stirrer (6) is used to mix the medicines evenly.

4. The in-situ injection remediation equipment for contaminated soil according to claim 1 is characterized by: The pneumatic diaphragm pump (3) is used for in-situ injection and is powered by an air compressor (4). The injection pressure of the pneumatic diaphragm pump (3) can be adjusted by adjusting the intake air pressure. The number of the pneumatic diaphragm pumps (3) is two.

5. The in-situ injection remediation equipment for contaminated soil according to claim 4, characterized in that: The connection structure at the end of the hose (7) includes a threaded connection or a flange connection.

6. The in-situ injection remediation equipment for contaminated soil according to claim 1, characterized in that: The gas storage tank (5) is matched with the air compressor (4), and a pressure gauge (8) and a valve (9) are arranged between the gas storage tank (5) and the pneumatic diaphragm pump (3). The gas storage tank (5) adjusts the air pressure according to the effect of in-situ injection, and the gas storage tank (5) is used to control the injection pressure.

7. The in-situ injection remediation equipment for contaminated soil according to claim 6, characterized in that: The air compressor (4) is used to provide injection power to the pneumatic diaphragm pump (3), and a pressure gauge (8) and a valve (9) are provided between the air storage tank (5) and the air compressor (4).

8. The in-situ injection remediation equipment for contaminated soil according to claim 1 is characterized by: A pressure gauge (8) and a valve (9) are provided between the pneumatic diaphragm pump (3) and the injection well, and between the pneumatic diaphragm pump (3) and the medicine storage tank (2).

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