Method for in-situ solidification-removal of heavy metals in soil
An in-situ solidification and heavy metal technology, applied in the field of soil remediation, can solve the problems of high purification efficiency, low cost, and long idle time of soil, and achieve the effect of broad market prospects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0015] Example 1
[0016] Put a rice straw rope with a diameter of 5mm in the modified solution (the solute is chitin, the solvent is an aqueous acetic acid solution with a volume concentration of 2%, and the mass concentration of chitin is 0.1%). The solid-liquid ratio of the straw rope to the modified solution It is 1Kg / 10L, taken out after the modification reaction for 1 hour, placed in an oven, and baked at 80°C for 5 minutes to obtain a modified straw rope. The modified straw ropes are applied to the soil with excessive heavy metal Cu in a parallel arrangement. The depth of the straw ropes is 10cm buried in the soil surface, the distance between the straw ropes is 10cm, and the application rate of the modified straw ropes is 300Kg / mu to control the soil quality. The water content is 20%-40%, and the soil pH is 6-7. After 15 days, the modified straw rope is taken out of the soil to complete the in-situ solidification and removal of heavy metals in the soil. The heavy metal a...
Example Embodiment
[0017] Example 2
[0018] Put a straw rope with a diameter of 25mm in the modification solution (the solute is urea, the solvent is water, and the mass concentration of urea is 5%). The solid-liquid ratio of the straw rope to the modification solution is 1Kg / 10L, and the modification reaction is 2 Take it out after hours, put it in an oven, and bake it at 100°C for 10 minutes to obtain a modified straw rope. The modified straw ropes are applied to the soil with excessive heavy metal Zn in a parallel arrangement. The depth of the straw ropes buried in the soil is 20cm, the distance between the straw ropes is 20cm, and the application rate of the modified straw ropes is 400Kg / mu to control the soil quality. The water content is 20%-40%, and the soil pH is 6-7. After 45 days, the modified straw rope is taken out of the soil to complete the in-situ solidification and removal of heavy metals in the soil. The heavy metal adsorption capacity of the modified straw rope is 10.1g (Heavy ...
Example Embodiment
[0019] Example 3
[0020] Put a straw rope with a diameter of 15mm in the modification solution (the solute is ammonia, the solvent is water, and the ammonia mass concentration is 3%), the solid-liquid ratio of the straw rope to the modification solution is 1Kg / 10L, and the modification reaction is 1.5 Take it out after hours, put it in an oven, and bake it at 100°C for 5 minutes to obtain a modified straw rope. Apply the modified straw ropes to the soil with excessive heavy metal Pb in a parallel arrangement. The depth of the straw ropes buried in the soil surface is 10cm, the distance between the straw ropes is 20cm, and the application rate of the modified straw ropes is 300Kg / mu to control the soil quality. The water content is 20%~40%, and the soil pH is 6~7. After 30 days, the modified straw rope is taken out of the soil to complete the in-situ solidification and removal of heavy metals in the soil. The heavy metal adsorption capacity of the modified straw rope is 9.9g (H...
PUM
Property | Measurement | Unit |
---|---|---|
Diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap