No concurrent high alkalinity issues! The reaction between MgO and added inorganic elements exhibits insolubilization and solidification effects.
"STA-M" is an insolubilization and solidification material primarily composed of magnesium oxide (MgO), which is produced by firing magnesite (magnesium carbonate), a natural material, at approximately 800°C. By adding inorganic materials to the main component MgO, it is possible to insolubilize all regulated heavy metals. The material is in the form of a white powder with a particle size of less than 1mm, and it exhibits insolubilization and solidification effects through the reaction between MgO and the added inorganic elements. 【Features】 ■ The pH after treatment is below 10.5 as it does not contain calcium-based materials. ■ It does not cause high alkalinity issues. ■ It has a large specific surface area, making it highly reactive with soil particles and heavy metal ions. ■ Compared to cement-based solidification materials, it has a lower pH and a reduced risk of re-dissolution of heavy metals. ■ The insolubilization effect is sustained over a long period. *For more details, please refer to the PDF document or feel free to contact us.
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【Other Features】 ■ By using it simultaneously with inorganic salts, it enhances pH adjustment and the insolubilization effect of target heavy metals. ■ By combining with ferrous sulfate for highly contaminated soil, it efficiently achieves insolubilization. * For more details, please refer to the PDF materials or feel free to contact us.
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【On-site Application Examples】 ■ Application examples for high-concentration composite contaminated soil - Former factory site: Target soil volume = 12,000m3 - After solidification below the secondary leaching standard, transported to a controlled landfill ■ Application examples for solidification and backfilling of composite contaminated soil - Former factory site: Target soil volume = 550m3 - After solidification below soil environmental standards, backfilled in place *For more details, please refer to the PDF document or feel free to contact us.
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Our company engages in a diverse range of businesses that create and protect society, including mineral products, steel-related businesses, functional materials, and environmental conservation. We are also advancing the development of functional material technologies, environmental conservation technologies, advanced utilization technologies for by-products generated from resource and steel processes, and equipment and chemical analysis technologies using advanced facilities. Our Environmental Project Department provides a one-stop solution from soil contamination surveys to evaluation, purification work, purification materials, and monitoring. Please feel free to contact us if you have any inquiries.