Soil remediation agent and preparation method thereof

Abstract

The invention belongs to the technical field of soil remediation, and particularly relates to a soil remediation agent and a preparation method thereof. According to the technical scheme, the soil remediation agent comprises 40-50% of boiler ash, 20-30% of sodium humate, 10-15% of kaolin, 5-10% of biochar, 5-10% of lime and 1-5% of a microbial agent. The soil remediation agent is high in comprehensive remediation capacity and composed of the boiler ash, the sodium humate, the kaolin, the biochar, the lime and the microbial agent, and soil is remedied from different aspects. For example, kaolin adsorbs heavy metals, lime and a microbial agent adjust the acid-base property and neutralize pollutants, all the components are matched with one another, the physical, chemical and biological properties of soil can be comprehensively improved, and the soil remediation effect is improved.

Description

Technical Field

[0001] This invention belongs to the field of soil remediation technology, specifically referring to a soil remediation agent and its preparation method. Background Technology

[0002] Soil, as a fundamental component of the ecosystem, plays a crucial role in supporting plant growth and maintaining ecological balance. However, with the rapid development of industrialization and intensive agriculture, large amounts of pollutants have entered the soil, leading to soil quality deterioration and damage to ecological functions. Soil remediation has become an urgent environmental problem to be solved.

[0003] Soil remediation agents are materials used to improve the physical, chemical, and biological properties of contaminated or degraded soils, reduce or eliminate the toxicity of pollutants in the soil, and restore the ecological functions of the soil. They can work through various mechanisms, such as adsorption, fixation, and degradation of pollutants, as well as regulating soil pH, improving soil structure, and increasing soil fertility, thereby creating favorable conditions for plant growth and promoting ecosystem restoration.

[0004] Currently, various soil remediation agents are available on the market, but they generally suffer from limited remediation capabilities. Many soil remediation agents are designed for only a specific type of pollutant or a particular soil problem. For example, they may focus solely on removing heavy metal pollutants, while being ineffective in improving soil acidification, compaction, and nutrient loss; or they may only adjust soil pH without effectively reducing the content of organic pollutants in the soil. Such single-function remediation agents are insufficient to meet the comprehensive remediation needs of complex contaminated soils. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes a soil remediation agent and its preparation method.

[0006] The technical solution adopted in this invention is as follows: This invention provides a soil remediation agent, comprising 40-50% boiler ash, 20-30% sodium humate, 10-15% kaolin, 5-10% biochar, 5-10% lime, and 1-5% microbial inoculant. Furthermore, it includes the following components: 45% boiler ash, 25% sodium humate, 12% kaolin, 8% biochar, 7% lime, and 3% microbial inoculant.

[0007] Furthermore, boiler ash is used to provide trace metal elements. Furthermore, sodium humate is used to improve soil structure and enhance fertilizer efficiency.

[0008] Furthermore, kaolin is used to adsorb heavy metals, thereby improving remediation capabilities. Furthermore, biochar is used to increase soil aeration and water retention.

[0009] Furthermore, lime is used to adjust acidity and alkalinity, and to neutralize pollutants.

[0010] Furthermore, microbial agents are used to regulate pH levels and neutralize pollutants.

[0011] Furthermore, trace metal elements include potassium, calcium, and magnesium.

[0012] This solution also discloses a method for preparing a soil remediation agent, which mainly includes the following steps: Step 1: Crush the boiler ash and slag, and crush sodium humate, biochar, kaolin and lime; Step 2: Accurately weigh the boiler ash, kaolin, sodium humate, and biochar according to the above proportions, put them into a high-speed mixer and mix them to obtain a homogeneous raw material mixture. Add an appropriate amount of water to make the raw material mixture slightly moist, and stir at high speed for 20-30 minutes to ensure uniform mixing. Step 3: Add the microbial agent to the high-speed mixer, mix it with the raw material mixture, and let it stand for 24 hours to mature and obtain the finished product. Then, dry the finished product. Step 4: Pack the dried finished product into a moisture-proof bag.

[0013] The beneficial effects achieved by the present invention using the above structure are as follows: (1) Strong comprehensive remediation capacity: It is composed of a variety of components, including boiler ash, sodium humate, kaolin, biochar, lime, and microbial agents, which remediate the soil from different aspects. For example, kaolin adsorbs heavy metals, while lime and microbial agents regulate acidity and alkalinity and neutralize pollutants. The components work together to comprehensively improve the physical, chemical, and biological properties of the soil and enhance the soil remediation effect.

[0014] (2) Boiler ash provides trace metal elements such as potassium, calcium and magnesium to supplement soil nutrients; sodium humate improves soil structure and enhances fertilizer efficiency. The combination of the two can increase soil fertility and optimize the physical structure of the soil, which is conducive to plant root growth and nutrient absorption.

[0015] (3) Biochar increases soil aeration and water retention, which helps improve soil permeability and water retention capacity, creating a good physical environment for plant growth, especially in areas with compacted soil or poor water retention.

[0016] (4) Kaolin adsorbs heavy metals, reducing the migration and bioavailability of heavy metals in the soil, and reducing the harm to plants and the ecological environment; lime and microbial agents regulate soil acidity and alkalinity, neutralize pollutants, alleviate soil acidification and alkalization problems, and reduce the toxicity of pollutants. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which further describe the technical solution of the present invention. However, the scope of protection of the present invention is not limited to these embodiments. All changes or equivalent substitutions that do not depart from the concept of the present invention are included within the scope of protection of the present invention.

[0018] Example 1 A soil remediation agent, the raw material ratio is as follows: 40% boiler ash, 30% sodium humate, 15% kaolin, 10% biochar, 5% lime, and 5% microbial inoculant.

[0019] Preparation process: Step 1: Crush the boiler ash and slag, and crush sodium humate, biochar, kaolin and lime; Step 2: Accurately weigh the boiler ash, kaolin, sodium humate, and biochar according to the above proportions, put them into a high-speed mixer and mix them to obtain a homogeneous raw material mixture. Add an appropriate amount of water to make the raw material mixture slightly moist, and stir at high speed for 20-30 minutes to ensure uniform mixing. Step 3: Add the microbial agent to the high-speed mixer, mix it with the raw material mixture, and let it stand for 24 hours to mature and obtain the finished product. Then, dry the finished product. Step 4: Pack the dried finished product into a moisture-proof bag.

[0020] Example 2 A soil remediation agent, the raw material ratio is as follows: 50% boiler ash, 35% sodium humate, 10% kaolin, 5% biochar, 5% lime, and 5% microbial inoculant.

[0021] Preparation process: Step 1: Crush the boiler ash and slag, and crush sodium humate, biochar, kaolin and lime; Step 2: Accurately weigh the boiler ash, kaolin, sodium humate, and biochar according to the above proportions, put them into a high-speed mixer and mix them to obtain a homogeneous raw material mixture. Add an appropriate amount of water to make the raw material mixture slightly moist, and stir at high speed for 20-30 minutes to ensure uniform mixing. Step 3: Add the microbial agent to the high-speed mixer, mix it with the raw material mixture, and let it stand for 24 hours to mature and obtain the finished product. Then, dry the finished product. Step 4: Pack the dried finished product into a moisture-proof bag.

[0022] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A soil remediation agent, characterized in that: It includes the following components: 40-50% boiler ash, 20-30% sodium humate, 10-15% kaolin, 5-10% biochar, 5-10% lime, and 1-5% microbial inoculant.

2. The soil remediation agent according to claim 1, characterized in that: It includes the following components: 45% boiler ash, 25% sodium humate, 12% kaolin, 8% biochar, 7% lime, and 3% microbial inoculant.

3. The soil remediation agent according to claim 1, characterized in that: Boiler ash is used to provide trace metal elements.

4. The soil remediation agent according to claim 1, characterized in that: Sodium humate is used to improve soil structure and enhance fertilizer efficiency.

5. A soil remediation agent according to claim 1, characterized in that: Kaolin is used to adsorb heavy metals and improve remediation capabilities.

6. The soil remediation agent according to claim 1, characterized in that: Biochar is used to increase soil aeration and water retention.

7. A soil remediation agent according to claim 1, characterized in that: Lime is used to adjust acidity and alkalinity and neutralize pollutants.

8. The soil remediation agent according to claim 1, characterized in that: Microbial agents are used to regulate pH levels and neutralize pollutants.

9. A soil remediation agent according to claim 3, characterized in that: Trace metal elements include potassium, calcium, and magnesium.

10. A method for preparing a soil remediation agent, wherein the soil remediation agent is prepared according to claim 1, characterized in that, The main steps include the following: Step 1: Crush the boiler ash and slag, and crush sodium humate, biochar, kaolin and lime; Step 2: Accurately weigh the boiler ash, kaolin, sodium humate, and biochar according to the above proportions, put them into a high-speed mixer and mix them to obtain a homogeneous raw material mixture. Add an appropriate amount of water to make the raw material mixture slightly moist, and stir at high speed for 20-30 minutes to ensure uniform mixing. Step 3: Add the microbial agent to the high-speed mixer, mix it with the raw material mixture, and let it stand for 24 hours to mature and obtain the finished product. Then, dry the finished product. Step 4: Pack the dried finished product into a moisture-proof bag.