|Remediation of Heavy Metal Pollution in Soils
The presence of heavy metals in soils and waters associated with former industrial activities is a common environmental problem. Heavy metal contamination may pose risks and hazards to humans and the ecosystem through direct ingestion or contact, the food chain, drinking of contaminated groundwater, reduction in food quality and land tenure problems. Heavy metals cannot be destroyed and therefore can persist in the environment for a long period of time.
Typical remediation technologies considered for reducing the harmful effects at heavy metal impacted sites often include:
|In response to the limitations provided by these remedial methods, Dunton Environmental has developed Regener8-19 to target heavy metal contaminants in soils. This rapid treatment approach induces chemical reactions within the soil to form stable, inert compounds that no longer present a risk to the environment.
The technique has been successfully implemented on a number of projects throughout the UK. One recent example, includes the rapid treatment of 10,000m3 of Lead impacted soils for Crest Nicholson (Case Study). The process reduced the total Lead concentrations by 72% and the leachate values by 93% within 2 weeks of product application. The process diverted all waste from hazardous landfill and enabled the safe re-use of materials on-site.
Dunton also operates a number of off-site Soil Treatment Facilities across the UK where such remedial techniques can also be implemented. Waste arisings that would otherwise be disposed of at landfill can now benefit from these tax-free and sustainable waste management centres.