A saline-alkali soil remediation device based on microbial treatment

Abstract

The application relates to the technical field of saline-alkali soil remediation, and particularly discloses a saline-alkali soil remediation device based on microbial treatment, which comprises a flushing mechanism, a salt and nitre collecting mechanism and a spraying mechanism installed on a towing rack, a flushing water tank is installed on the towing rack, and a flushing nozzle flushes the salt and nitre on the saline-alkali soil; a collecting roller is rotatably installed below the towing rack through a support, a collecting box is installed on the towing rack and at the rear of the flushing water tank, a scraper is installed at the lower portion of the collecting box, and the scraper scrapes the soil with salt and nitre on the collecting roller into the collecting box; a spraying water tank is installed on the towing rack and at the rear of the collecting box, a microbial agent mixture is placed in the spraying water tank, and a spraying head sprays the microbial agent mixture on the saline-alkali soil; the application enables the microbes to directly contact the soil, reduces the salt and nitre precipitated on the surface of the saline-alkali soil, improves the survival rate of the microbial agent, reduces the high soil remediation cost, and improves the soil remediation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of saline-alkali soil remediation, specifically to a saline-alkali soil remediation device based on microbial treatment. BACKGROUND

[0002] Saline-alkali soil remediation technology based on microbial treatment is a method that utilizes the metabolic activities and biotransformation capabilities of microorganisms to improve soil structure, reduce salinity and alkalinity, and increase soil fertility, thereby restoring and enhancing the agricultural production capacity of saline-alkali land. This method is more environmentally friendly and sustainable compared to traditional physical and chemical remediation methods. The following is the application principle based on microbial treatment:

[0003] 1. Microbial species selection: Select or screen microbial strains that are resistant to salt and alkali and can effectively degrade salt and alkaline substances in the soil, such as certain salt-tolerant bacteria, fungi, and algae. These microorganisms can change the chemical properties of the soil by absorbing and utilizing sodium ions, chloride ions, and other salts, or by secreting organic acids to neutralize soil alkalinity.

[0004] 2. Microbial fertilizers and inoculants: Prepare biological fertilizers or inoculants containing specific functional microorganisms, such as complex microbial preparations containing nitrogen-fixing bacteria, phosphorus-dissolving and potassium-dissolving bacteria, and organic matter-decomposing bacteria. These microorganisms not only reduce soil salinity and alkalinity, but also provide nutrients needed for plant growth, improve soil structure, and promote plant root development.

[0005] 3. Application of bioremediation technology: By directly applying microbial inoculants, inoculating microbial communities, or establishing an environment conducive to the reproduction of beneficial microorganisms (such as by supplementing organic matter), promote the growth and activity of microorganisms in the soil, accelerate the transformation and exclusion of salt and alkali substances.

[0006] 4. Plant-microbe interaction: Combine with the planting of salt-tolerant plants, take advantage of the characteristics of certain plants that can form symbiotic relationships with specific microorganisms, such as rhizosphere microorganisms that can promote plant tolerance and exclusion of salt. Plant roots provide habitat and nutrients for microorganisms, while microorganisms help plants improve the rhizosphere environment, increasing the efficiency of ecological remediation of saline-alkali land.

[0007] 5. Precise management and monitoring: During the remediation process, it is necessary to regularly monitor indicators such as soil salinity, microbial activity, and plant growth to adjust the dosage, frequency, and method of microbial inoculant application, ensuring the maximization of remediation effect.

[0008] While microbial-based soil remediation technologies for saline-alkali land have shown great potential in both theory and practice, further optimization and localization research are needed to ensure the remediation measures are targeted and effective, taking into account the specific conditions of different regions. Current methods of spraying microbial agents cannot effectively remove surface salts and nitrates from saline-alkali land, preventing many microorganisms from penetrating the soil due to surface salt and nitrate blockage. This results in low survival rates of microbial agents, leading to high consumption, high costs, and low efficiency in saline-alkali land soil remediation.

[0009] Therefore, it is necessary to design a soil remediation device for saline-alkali land based on microbial treatment to solve the problems of high consumption, high cost and low efficiency caused by the salt and nitrate on the surface of existing saline-alkali land affecting the entry of microbial agents into the soil. Summary of the Invention

[0010] In view of the problems existing in the prior art, the purpose of this invention is to provide a saline-alkali land soil remediation device based on microbial treatment.

[0011] The technical solution adopted by the present invention to solve its technical problem is: a saline-alkali land soil remediation device based on microbial treatment, including a trailer frame and a flushing mechanism, a salt and nitrate collection mechanism and a spraying mechanism installed on the trailer frame. The flushing mechanism is equipped with a flushing water tank, a flushing pipe and a flushing nozzle. The flushing water tank is installed on the trailer frame, the flushing pipe is installed at the bottom of the flushing water tank, and multiple flushing nozzles are installed on the flushing pipe. The flushing nozzles flush the salt and nitrate on the saline-alkali land.

[0012] The salt and nitrate collection mechanism is equipped with a collection roller, a scraper, and a collection box. The collection roller is rotatably mounted below the trailer frame via a bracket. The collection box is mounted on the trailer frame and is located behind the flushing water tank. A scraper is installed at the bottom of the collection box and is positioned above the collection roller. The scraper scrapes the soil containing salt and nitrate from the collection roller into the collection box.

[0013] The spraying mechanism is equipped with a spraying water tank, a spraying pipe, and spraying heads. The spraying water tank is installed on the trailer frame and at the rear of the collection box. The spraying water tank contains a mixture of microbial agents. A spraying pipe is installed at the bottom of the spraying water tank, and multiple spraying heads are installed on the spraying pipe. The spraying heads spray the mixture of microbial agents onto the saline-alkali soil.

[0014] Specifically, the bottom of the flushing water tank is provided with a water outlet, a water outlet pipe is installed at the water outlet, the bottom of the water outlet pipe is connected to the middle of the flushing pipe, the flushing pipe is set perpendicular to the forward direction of the trailer frame, and the flushing nozzle is set on the flushing pipe at an angle towards the forward direction of the trailer frame.

[0015] Specifically, a flushing pump and a flushing valve are installed on the water outlet pipe, and the flushing pump provides power to the flushing nozzles.

[0016] Specifically, the collecting roller rolls on the soil, and the distance between the collecting roller and the scraper is 0.5cm-1cm.

[0017] Specifically, the inside of the collection box is divided into collection chambers by multiple partitions, the number of collection chambers being the same as the number of collection rollers, and a mesh plate is provided on the upper part of the collection box.

[0018] Specifically, each collection chamber in the collection box has a long strip-shaped collection port at the bottom, an inclined collection plate is installed at the collection port, protective plates are provided on both sides of the collection plate, a scraper is installed at the bottom of the collection plate, and a cover plate is rotatably installed at the top of the collection port via a pin.

[0019] Specifically, the bottom of the spray tank is provided with a liquid outlet, and a liquid outlet pipe is installed at the liquid outlet. The bottom of the liquid outlet pipe is connected to the middle of the spray pipe. The spray pipe is set perpendicular to the forward direction of the trailer frame, and the spray head is set on the spray pipe at an angle towards the backward direction of the trailer frame.

[0020] Specifically, a spray pressurization pump and a spray valve are installed on the liquid outlet pipe, and the spray pressurization pump provides power to the spray head.

[0021] Specifically, a connecting frame is installed at the front of the trailer frame, and a vehicle body connector is installed at the front of the connecting frame. The vehicle body connector is rotatably installed on the trailer body by a locking pin. The trailer body provides power to the trailer frame to move on the saline-alkali land. Drainage pipes are buried in the low-lying areas around the saline-alkali land, and several seepage holes are provided at the top of the drainage pipes.

[0022] A method for operating a microbial-based saline-alkali land soil remediation device includes the following steps:

[0023] S1. The trailer frame is connected to the trailer body through the vehicle body connector. The trailer body drags the trailer frame to move. The spray water tank is filled with the prepared microbial agent mixture. The switches of the flushing pump and the spray pressurizing pump are connected to the cab of the trailer body through the wiring.

[0024] S2. While the trailer is moving, the flushing pump and spray pressurization pump are turned on. The flushing nozzles use high-pressure water to wash the saline-alkali ground, making the ground wet and dissolving the salt and nitrates on the surface and mixing them with the soil.

[0025] S3. The collecting roller rolls over the moist saline-alkali land, sticking the soil to the collecting roller. The soil on the collecting roller is scraped off by the scraper and enters the collecting port through the collecting plate. The soil pushes open the cover plate and enters the collecting box. The cover plate is automatically retracted and seals the collecting port under the action of gravity.

[0026] S4. The spray head evenly sprays the microbial agent mixture onto the soil.

[0027] S5. After the water in the rinsing tank and the microbial agent mixture in the spraying tank have been sprayed, turn off the rinsing pump and the spraying pressurization pump. Then, discharge the soil containing salt and nitrate through the discharge port on the lower side of the collection tank and collect and treat it.

[0028] The present invention has the following beneficial effects:

[0029] The saline-alkali soil remediation device based on microbial treatment designed in this invention uses a flushing mechanism to wash away the salt and nitrate on the surface of the saline-alkali land, and then uses a salt and nitrate collection mechanism to roll up and collect the soil containing salt and nitrate on the surface of the saline-alkali land. Finally, a mixture of microbial agents is sprayed onto the soil. The microorganisms come into direct contact with the soil, which reduces the salt and nitrate precipitated on the surface of the saline-alkali land, increases the survival rate of the microbial agents, reduces the cost of soil remediation, and improves the efficiency of soil remediation.

[0030] The microbial treatment-based soil remediation device designed in this invention has a simple structure and is easy to operate, and can practically help improve the soil remediation of saline-alkali land. Attached Figure Description

[0031] Figure 1 This is a top view of a soil remediation device for saline-alkali land based on microbial treatment.

[0032] Figure 2 This is a front view of a saline-alkali soil remediation device based on microbial treatment.

[0033] Figure 3 This is a partial cross-sectional view of a soil remediation device for saline-alkali land based on microbial treatment.

[0034] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0035] Figure 5 yes Figure 3 Enlarged view of point B in the middle.

[0036] Figure 6 This is a schematic diagram of the installation structure of the spray head and spray pipe.

[0037] Figure 7 This is a schematic diagram of the installation structure of the scraper and cover plate.

[0038] Figure 8 This is a schematic diagram showing the positional relationship between the scraper and the collecting roller.

[0039] In the diagram: 1-rinsing mechanism, 1.1-rinsing water tank, 1.2-outlet pipe, 1.3-rinsing pipe, 1.4-rinsing nozzle, 1.5-rinsing pump, 1.6-rinsing valve;

[0040] 2-Salt and nitrate collection mechanism, 2.1-Collection roller, 2.2-Scraper, 2.3-Collection box, 2.4-Baffle, 2.5-Collection port, 2.6-Collection plate, 2.7-Cover plate, 2.8-Wire mesh plate;

[0041] 3-Spraying mechanism, 3.1-Spraying water tank, 3.2-Discharge pipe, 3.3-Spraying pipe, 3.4-Spraying head, 3.5-Spraying pressurization pump, 3.6-Spraying valve;

[0042] 4-Trailer frame, 4.1-Connecting frame, 4.2-Vehicle body connector. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] Example 1:

[0045] like Figures 1-8 As shown, a soil remediation device for saline-alkali land based on microbial treatment includes a trailer frame 4 and a flushing mechanism 1, a salt and nitrate collection mechanism 2, and a spraying mechanism 3 installed on the trailer frame 4. A connecting frame 4.1 is installed at the front of the trailer frame 4, and a vehicle body connector 4.2 is installed at the front of the connecting frame 4.1. The vehicle body connector 4.2 is rotatably installed on the trailer body by a locking pin. The trailer body provides power to the trailer frame 4 to move on the saline-alkali land.

[0046] Drainage pipes are laid underground in the low-lying areas around the saline-alkali land. Several seepage holes are provided on the upper part of the drainage pipes. A filter screen is installed on the outside of the drainage pipes. The seepage holes facilitate the discharge of rainwater or irrigation water. Water carrying salt enters the drainage pipes through the seepage holes and is discharged by the terrain or drainage pumps to collect salt water and filter the water in the saline-alkali soil.

[0047] The flushing mechanism 1 is equipped with a flushing water tank 1.1, a water outlet pipe 1.2, a flushing pipe 1.3, a flushing nozzle 1.4, a flushing pump 1.5, and a flushing valve 1.6. The flushing water tank 1.1 is installed on the trailer frame 4. The flushing pipe 1.3 is installed at the bottom of the flushing water tank 1.1. Multiple flushing nozzles 1.4 are installed on the flushing pipe 1.3. The flushing nozzles 1.4 flush the salt and nitrate on the saline-alkali land.

[0048] The bottom of the flushing water tank 1.1 is equipped with a water outlet, and a water outlet pipe 1.2 is installed at the water outlet. The bottom of the water outlet pipe 1.2 is connected to the middle of the flushing pipe 1.3. The flushing pipe 1.3 is set perpendicular to the forward direction of the trailer frame 4. The flushing pipe 1.3 covers the entire bottom of the trailer frame 4. The flushing nozzle 1.4 is set at an angle on the flushing pipe 1.3 in the forward direction of the trailer frame 4. The flushing nozzle 1.4 sprays a high-pressure water jet forward and downward to wash away the salt and nitrates on the dry saline-alkali surface and moisten the soil.

[0049] A flushing pump 1.5 and a flushing valve 1.6 are installed on the water outlet pipe 1.2. The flushing pump 1.5 provides power to the flushing nozzle 1.4.

[0050] The salt and nitrate collection mechanism 2 is equipped with a collection roller 2.1, a scraper 2.2, a collection box 2.3, a partition 2.4, a collection port 2.5, a collection plate 2.6, a cover plate 2.7, and a mesh plate 2.8. The collection roller 2.1 is rotatably mounted below the trailer frame 4 via a bracket. The collection box 2.3 is mounted on the trailer frame 4 and is located behind the flushing water tank 1.1. The scraper 2.2 is installed at the bottom of the collection box 2.3 and is positioned above the collection roller 2.1. The collection roller 2.1 rolls on the soil, and the distance between the collection roller 2.1 and the scraper 2.2 is 0.5cm-1cm. The scraper 2.2 scrapes the soil containing salt and nitrate from the collection roller 2.1 into the collection box 2.3.

[0051] The inside of the collection box 2.3 is divided into 4 collection chambers by 3 partitions 2.4. The number of collection chambers is the same as the number of collection rollers 2.1. A mesh plate 2.8 is provided on the upper part of the collection box 2.3.

[0052] Each collection chamber in the collection box 2.3 has a long strip-shaped collection port 2.5 at the bottom. An inclined collection plate 2.6 is installed at the collection port 2.5. Protective plates are provided on both sides of the collection plate 2.6. A scraper 2.2 is installed at the bottom of the collection plate 2.6. A cover plate 2.7 is rotatably installed at the top of the collection port 2.5 via a pin.

[0053] The spraying mechanism 3 is equipped with a spraying water tank 3.1, a liquid outlet pipe 3.2, a spraying pipe 3.3, a spraying head 3.4, a spraying pressurization pump 3.5, and a spraying valve 3.6. The spraying water tank 3.1 is installed on the trailer frame 4 and is located behind the collection tank 2.3. The spraying water tank 3.1 contains a mixture of microbial agents. The spraying pipe 3.3 is installed at the bottom of the spraying water tank 3.1. Eleven spraying heads 3.4 are installed on the spraying pipe 3.3. The spraying heads 3.4 spray the mixture of microbial agents onto the saline-alkali soil.

[0054] The bottom of the spray tank 3.1 is provided with a liquid outlet, and a liquid outlet pipe 3.2 is installed at the liquid outlet. The bottom of the liquid outlet pipe 3.2 is connected to the middle of the spray pipe 3.3. The spray pipe 3.3 is set perpendicular to the forward direction of the trailer frame 4. The spray head 3.4 is set on the spray pipe 3.3 at an angle towards the backward direction of the trailer frame 4.

[0055] A spraying pressurization pump 3.5 and a spraying valve 3.6 are installed on the liquid outlet pipe 3.2. The spraying pressurization pump 3.5 provides power to the spray head 3.4.

[0056] Example 2: A soil remediation method using a microbial treatment-based saline-alkali land soil remediation device with the structure of Example 1, comprising the following steps:

[0057] 1. Rinse.

[0058] 1.1 The trailer frame 4 is connected to the trailer body via the vehicle body connector 4.2. The trailer body drags the trailer frame 4 to move. The spray tank 3.1 is filled with the prepared microbial agent mixture. The switches of the flushing pump 1.5 and the spray pressurizing pump 3.5 are connected to the cab of the trailer body via wiring.

[0059] 1.2 While the trailer is moving, the switches of flushing pump 1.5 and spray pressurization pump 3.5 are turned on. The flushing nozzle 1.4 uses high-pressure water to flush the saline-alkali ground, making the ground wet and dissolving the salt and nitrates on the surface and mixing them with the soil.

[0060] 2. Extract saltpeter.

[0061] 2.1 The collecting roller 2.1 rolls over the moist saline-alkali land, adhering the soil to the collecting roller 2.1. The soil on the collecting roller 2.1 is scraped off by the scraper 2.2 and enters the collecting port 2.5 through the collecting plate 2.6. The soil pushes open the cover plate 2.7 and enters the collecting box 2.3. Under the action of gravity, the cover plate 2.7 automatically retracts and seals the collecting port 2.5. The soil containing salt and nitrate is discharged through the discharge port on the lower side of the collecting box 2.3 and collected and processed.

[0062] 3. Spray microbial inoculants.

[0063] The spray head 3.4 sprays the microbial agent mixture evenly onto the soil. After the water in the flushing tank 1.1 and the microbial agent mixture in the spraying tank 3.1 have been sprayed, the switches of the flushing pump 1.5 and the spraying pressurization pump 3.5 are turned off.

[0064] 4. Pre-buried drainage pipes.

[0065] The elevation of the saline-alkali land was measured, and drainage pipes were pre-buried in different areas of the saline-alkali land. Each square enclosed by the drainage pipes is an average of 0.2 hectares of saline-alkali land.

[0066] 5. Irrigation.

[0067] The saline-alkali land is repeatedly irrigated with rainwater or fresh water.

[0068] 6. Drain saline solution.

[0069] Irrigation water enters the drainage pipe through seepage holes to prevent saline water from entering the ground and becoming trapped, which would otherwise lead to poor remediation of saline-alkali land. The saline water is then discharged and collected through the drainage pipe.

[0070] This invention is not limited to the above-described embodiments. Anyone should know that any structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention.

[0071] The technologies, shapes, and structures not described in detail in this invention are all known technologies.

Claims

1. A saline-alkali soil remediation device based on microbial treatment, characterized in that, The utility model provides a salt and alkali washing and collecting device for saline-alkali soil, which comprises a towing frame and a washing mechanism, a salt and alkali collecting mechanism and a spraying mechanism mounted on the towing frame. The washing mechanism is provided with a washing water tank, a washing pipe and a washing nozzle, the washing water tank is mounted on the towing frame, the washing pipe is mounted at the bottom of the washing water tank, a plurality of washing nozzles are mounted on the washing pipe, and the washing nozzles wash the salt and alkali on the saline-alkali soil; The salt and alkali collecting mechanism is provided with a collecting roller, a scraper and a collecting box, the collecting roller is rotatably mounted below the towing frame through a support, the collecting box is mounted on the towing frame and at the rear of the washing water tank, the scraper is mounted at the lower part of the collecting box and above the collecting roller, and the scraper scrapes the soil with salt and alkali on the collecting roller into the collecting box; 2. The microbe-based treatment based saline soil remediation device according to claim 1, wherein, The spraying mechanism is provided with a spraying water tank, a spraying pipe and a spraying nozzle, the spraying water tank is mounted on the towing frame and at the rear of the collecting box, a microbial agent mixture is placed in the spraying water tank, the spraying pipe is mounted at the bottom of the spraying water tank, a plurality of spraying nozzles are mounted on the spraying pipe, and the spraying nozzles spray the microbial agent mixture onto the saline-alkali soil.

3. The microbe-based treatment of saline soil remediation device of claim 2, wherein, The bottom of the washing water tank is provided with a water outlet, a water outlet pipe is mounted at the water outlet, the bottom of the water outlet pipe is connected to the middle part of the washing pipe, the washing pipe is arranged vertically to the advancing direction of the towing frame, and the washing nozzles are arranged obliquely on the washing pipe to the advancing direction of the towing frame.

4. The microbe-based treatment based saline soil remediation device of claim 1, wherein, A washing pump and a washing valve are mounted on the water outlet pipe, and the washing pump provides power for the washing nozzles.

5. The microbe-based treatment based saline soil remediation device of claim 1, wherein, The collecting roller rolls on the soil, and the distance between the collecting roller and the scraper is 0.5-1 cm.

6. The microbe-based treatment based saline soil remediation device of claim 5, wherein, The inside of the collecting box is divided into collecting chambers by a plurality of partitions, the number of the collecting chambers is the same as that of the collecting rollers, and a mesh plate is arranged at the upper part of the collecting box.

7. The microbe-based treatment based saline soil remediation device of claim 1, wherein, The bottom of each collecting chamber in the collecting box is provided with a long strip-shaped collecting opening, an obliquely arranged collecting plate is mounted at the collecting opening, guard plates are arranged at the two sides of the collecting plate, a scraper is mounted at the lower part of the collecting plate, and a cover plate is rotatably mounted at the upper part of the collecting opening by a pin shaft.

8. The microbe-based treatment of saline soil remediation device of claim 7, wherein, The bottom of the washing water tank is provided with a water outlet, a water outlet pipe is mounted at the water outlet, the bottom of the water outlet pipe is connected to the middle part of the washing pipe, the washing pipe is arranged vertically to the advancing direction of the towing frame, and the washing nozzles are arranged obliquely on the washing pipe to the advancing direction of the towing frame.

9. The microbial treatment based saline soil remediation device of claim 1, wherein, A spraying pressurizing pump and a spraying valve are mounted on the liquid outlet pipe, and the spraying pressurizing pump provides power for the spraying nozzles.

10. The method of operating a microbial treatment-based device for saline soil remediation according to any one of claims 1-9, wherein, A connecting frame is mounted at the front part of the towing frame, a vehicle body connecting piece is mounted at the front part of the connecting frame, the vehicle body connecting piece is rotatably mounted on a towing vehicle body by a locking pin, the towing vehicle body provides power for the towing frame to move on the saline-alkali soil, a drainage pipe is laid in the low-lying part of the periphery of the saline-alkali soil, and a plurality of water seepage holes are arranged at the upper part of the drainage pipe. The utility model provides a salt and alkali washing and collecting device for saline-alkali soil, which comprises a towing frame and a washing mechanism, a salt and alkali collecting mechanism and a spraying mechanism mounted on the towing frame. S1, the towing frame is connected to the towing vehicle body through the vehicle body connecting piece, the towing vehicle body drags the towing frame to move, the microbial agent mixture prepared is placed in the spraying water tank, and the switches of the washing pump and the spraying pressurizing pump are connected to the cab of the towing vehicle body through a circuit; S2, the towing vehicle body moves while the switches of the washing pump and the spraying pressurizing pump are opened, the washing nozzles wash the ground of the saline-alkali soil by high-pressure water, so that the ground is wetted and the salt and alkali on the surface are melted and mixed with the soil; S3, the collection roller rolls over the wet saline-alkali soil, and the soil is adhered to the collection roller; the soil on the collection roller is scraped off by the scraper and enters the collection port through the collection plate; the soil pushes the cover plate into the collection box; the cover plate is automatically recycled and blocks the collection port under the action of gravity; S4, the spraying head uniformly sprays the microbial agent mixture on the soil; S5, after the water in the flushing water tank and the microbial agent mixture in the spraying water tank are sprayed, the switches of the flushing pump and the spraying pressure pump are closed, then the soil containing salt and nitre is discharged through the discharge port on the lower side of the collection box, and the soil is collected and treated.

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