TVK_Lug - Environmental remediation, fitoremediation - Biocentrum Ltd.

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The environmental survey made by our company in accordance to the assignment given by Tisza Vegyi Kombinát Ltd. revealed a significant ph-anomaly in the soil and groundwater in the area of a former alkaline regenerating plant, which was caused by natron leakage. Because of the high built-up area and the relatively low territorial expansion of the contamination, only in situ methods could be used.
The technical intervention we designed for this case was accepted by the Environmental Protection Inspectorship of North-Hungary. To reduce the ph and neutralize the alkalnie we used an air-sparging system to fractionally inject carbon-dioxide into the soil with a pressure of 3-8 bar. With continuous sampling we could control the neutralization process till the balance of the neutral ph. As a result of our operation the initially high (12) was reduced to an acceptable neutral level (7-8 ph), while the sodium content and the electrical conductivity of the groundwater was reduced as well.
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