Compound eluting agent for arsenic-polluted soil and remediation method for arsenic-polluted soil
An arsenic pollution and eluent technology, applied in the field of arsenic-contaminated soil treatment and remediation, can solve the problems of increased environmental risks due to secondary arsenic pollution, reduced stability of arsenic-containing iron minerals, and removal of total arsenic content. There are effects of form removal, reduction of new minerals, and reduction of formation of secondary minerals
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0027] It was collected from an actual polluted site in the south, air-dried naturally, and after removing impurities, it was pulverized and passed through a 60-mesh sieve. The basic physical and chemical properties and heavy metal content of the soil are shown in Table 1.
[0028] Table 1 Basic physical and chemical properties and heavy metal content of soil
[0029] Moisture content (%) Soil type As (mg / kg) Fe(mg / kg) Al (mg / kg) Mn (mg / kg) 10.55 red loam 70 20042.65 26071.25 283.45
[0030]1. Weigh sodium dithionite and tartaric acid and dissolve them in different containers of water and mix evenly to obtain 0.1mol / L sodium dithionite solution and 0.6mol / L tartaric acid solution;
[0031] 2. 40% by volume of 0.1mol / L sodium dithionite solution and 60% by volume of 0.6mol / L tartaric acid solution, mixed to obtain a compound rinse agent;
[0032] 3. At room temperature, according to the solid-to-liquid ratio (g:ml) of 1:10, mix the compound el...
Embodiment 2
[0038] 1. Weigh sodium dithionite and tartaric acid and dissolve them in different containers of water and mix evenly to obtain 0.2mol / L sodium dithionite solution and 0.5mol / L tartaric acid solution;
[0039] 2. Mix the 0.2mol / L sodium dithionite solution to 50% by volume, and the 0.05mol / L tartaric acid solution to 50% by volume, and mix them to obtain a compound rinse agent;
[0040] 3. At room temperature, according to the solid-to-liquid ratio (g:ml) of 1:15, mix the compound eluent with 3g of the same arsenic-contaminated soil as Example 1, and shake it in a shaker at 180 r.min -1 Shake and rinse for 8 hours;
[0041] 4. Separate the solid-liquid from the soil after shaking and washing, collect the washing waste liquid, add water to the container according to the solid-liquid ratio (g:ml) of 1:10, and continue shaking and washing in the shaker for 1 hour;
[0042] 5. Separation of solid and liquid from the soil washed with clean water, and remove the clean water to obta...
Embodiment 3
[0046] Collected from an actual polluted site in Guangzhou City, air-dried naturally, after removing impurities, pulverized, and passed through a 60-mesh sieve. The basic physical and chemical properties and heavy metal content of the soil are shown in Table 2.
[0047] Table 2 Basic physical and chemical properties of soil and heavy metal content
[0048] Moisture content (%) Soil type As (mg / kg) Fe(mg / kg) Al (mg / kg) Mn (mg / kg) 8.8 red loam 134 18874.5 29559.45 282.16
[0049] 1. Weigh sodium dithionite and tartaric acid and dissolve them in different containers of water and mix evenly to obtain 0.2mol / L sodium dithionite solution and 0.05mol / L tartaric acid solution;
[0050] 2. Mix 80% by volume of 0.2mol / L sodium dithionite solution and 20% by volume of 0.4mol / L tartaric acid solution to obtain a compound rinse agent;
[0051] 3. At room temperature, according to the solid-to-liquid ratio (g:ml) of 1:10, mix the compound eluent and 3g of ...
PUM
Property | Measurement | Unit |
---|---|---|
Removal rate | aaaaa | aaaaa |
Removal rate | aaaaa | aaaaa |
Removal rate | 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, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com