NANO IRON s.r.o.

Písecná site: challenging remediation of deep contamination plume near to the drinking water source

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Source: NANO IRON s.r.o.

Treatment of an old disposal site proved to be a challenging task due to its improper placement and insufficient ensuring. The site is located in a very complex geological environment and in imminence of the source of drinking water. Therefore, the soluble in-situ reagents cannot be applied here. NANOFER slurry was chosen by the remediation company AQUATEST for removal of chlorinated hydrocarbons (CHCs) from a deep aquifer in fractured rocks.

Extraction of deposited waste was accomplished during the first remediation phase. Pump and treat and venting started as the second stage in 2004, and these measures cannot be stopped because of the risk of the contamination of drinking water. In the third phase, nZVI slurry was applied in order to speed up CHCs removal and to achieve the required contamination limits.

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