三好商会・三好環境株式会社 Company Profile

"DeNight(R)" is a heavy metal solidification material primarily composed of magnesium oxide, which exhibits excellent solidification performance for all types of second-class specified hazardous substances (such as heavy metals) designated by the Soil Contamination Countermeasures Act. Since its launch in 2007, it has been used in over 200 construction projects, boasting a wealth of treatment experience, including data from actual sites that have been in place for more than seven years. Additionally, indoor mixing tests and follow-up investigations of treated soil collected from actual sites have been conducted, confirming the long-term stability of the treated soil, which is a concern in solidification treatment.

"Denite®" is a heavy metal immobilization material primarily composed of magnesium oxide, which exhibits excellent immobilization performance for all types of second-class specified hazardous substances (such as heavy metals) designated by the Soil Contamination Countermeasures Act. This document presents examples of various contaminated soils treated with Denite for immobilization. Furthermore, the amount to be added should be determined based on indoor mixing tests, and the setting of the addition amount on-site should take into account the characteristics (mixability) of the construction equipment.

"Denite®" is a heavy metal solidification material primarily composed of magnesium oxide, which exhibits excellent solidification performance against all types of second-class specified hazardous substances (such as heavy metals) designated by the Soil Contamination Countermeasures Act. This document presents the leaching test results of treated soil collected from indoor mixing tests and actual sites over a long material age. In indoor tests, it has been confirmed that the leaching amount of solidified treated soil using the Denite series shows stable leaching amounts over a long period. Additionally, it has been verified that the solidification performance at the beginning of construction is maintained in treated soil collected from actual sites, demonstrating that the solidification mechanism of the Denite series acts over the long term.