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Amendment to Soil Contamination Countermeasures Act was put into effect in April, 2010. The amendement is basically to change the excavation-removal-oriented method, which causes damages. By taking the steps of discovering soil contamination, clarification of the needed measures by classifying regulated areas, and the establishment of regulations for ensuring the appropriate treatment of contaminated soil, etc., the area can be used.
Our insoluble treatment agent "INSOTEC" can be applid to Class II Specified Toxic Substances (heavy metals, etc.) .
■ As the process doesn't cause any vibration nor noise, do not have to worry about causing
neighbors any troubles.
■ As transportaion of contaminated soil by dump trucks is not necessary, it contributes to the
reduction of CO gas content and also don't have to worry about possible accidental contacts
with the third parties.
■ As it is in-situ treatment, earth retaining works are not needed.
■ The treatment is not affected by groundwater.
When insoluble treatment agent "INSOTEC" is added
to the soil, a mineral with very high specific surface
area called ferrihydrite is deposited. Arsenic exists
as an anion having a negative charge called arsenic
ion in the surface water.
Ferrihydrite is
positively-charged in the natural water and attracts
negatively-charged arsenic ion. When arsenic ion is
attracted to the surface, it adsorbs on fefihydrite by
strong chemical bond . Arsenic and lead are
incorporated in the structure of ferrihydrite. They
don’t easily release to the water from ferrihydrite.
(Insolubility)
ferrihydrite（Wikipedia）
Joint Reserch : The Institute of Nature and Environmental Technology, Kanazawa University Assistant Professor Mr. Fukushi
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