Method for remediating acid/heavy metal lead composite polluted soil by using Pennisetum hydridum
A compound pollution and heavy metal technology, applied in the field of environmental pollution remediation, can solve problems such as high cost, soil structure damage, and large engineering volume, and achieve the effects of simple planting management, rapid growth, and small engineering volume
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Example Embodiment
[0024] Example 1:
[0025] The emperor bamboo grass was tested in the acid and heavy metal lead compound contaminated soil with a pH value of 3.0 and an average heavy metal lead content of 279.06 mg / kg. Starting from November 2010, no additives were applied to the soil, and then low ridges were raised, plowing to plant emperor grass, and the planting work was completed on March 15, 2011. The planting density specification of king bamboo grass is 80cm×50cm. During the growth period, no irrigation and fertilization are required, and weeds in the field are manually removed, and harvested until the end of November 2011. The harvested king bamboo grass is ashed according to the conventional method, and heavy metals are extracted to obtain heavy metal lead and fertilizer. After one harvest, the purification rate of the emperor bamboo grass to the heavy metal lead in the soil is 6.86 mg / kg; since the number of cuttings in this example is only one of the final harvest, according to nor...
Example Embodiment
[0026] Example 2:
[0027] The emperor bamboo grass was tested in the soil with a pH value of 3.0 and an average heavy metal lead content of 279.06mg / kg acid and heavy metal lead. Starting in December 2010, no additives were applied to the soil, and then low-ridge, plowing and planting emperor bamboo grass, and the planting work was completed on March 10, 2011. The planting density of King bamboo grass is 75cm×50 cm. During the growth period, there is no irrigation, and the biogas slurry is fertilized every 2 months to manually remove the weeds in the field, and the harvest will be carried out by the end of November 2011. The harvested king bamboo grass is ashed according to the conventional method, and heavy metals are extracted to obtain heavy metal lead and fertilizer. After one harvest, the purification rate of the emperor bamboo grass to the heavy metal lead in the soil is 4.35 mg / kg; since the number of cuttings in this example is only one of the final harvest, according ...
Example Embodiment
[0028] Example 3:
[0029] The emperor bamboo grass was tested in the acid and heavy metal lead compound contaminated soil with a pH value of 3.0 and an average heavy metal lead content of 279.06 mg / kg. Beginning in November 2010, lime-sodium hydroxide and organic fertilizers were used as additives in the soil. 500kg lime and 250kg sodium hydroxide were added per acre of polluted farmland. The same amount of lime and sodium hydroxide was applied again on the eighth day. For fifteen days, sericulture was applied at an amount of 2000kg / mu. Two months later, in February 2011, low ridges were raised, plowing and planting emperor grass, and the planting work was completed on March 5, 2011. The planting density specification of king bamboo grass is 80cm×50cm. During the growth period, there is no irrigation, and the biogas slurry is fertilized every 2 months to manually remove the weeds in the field. The harvest will be carried out by the end of November 2011. The harvested king bamb...
PUM
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