In soil remediation projects there can be a need for purification of exhaust from air strippers, tent ventilation and even the interstitial air in the ground present naturally or under purge from treatment systems.
Soil vapour extraction (SVE)
This method is most commonly used to treat the interstitial air lying between the groundwater table and the surface of the soil. This process again uses wells, sunk into the ground, but in this case, air is injected. The air may be heated to increase the volatility of the substances to be removed, or to manage the pickup of moisture into the gas stream.
The contaminant-laden air is then treated at the surface using either catalytic oxidisers, small regenerative activated carbon units, or sacrificial, single-use carbon adsorbers. In this process, the air may be vented to atmosphere or used to feed the sparging process.
Air from the ground excavation
In soil remediation excavation of ground is needed when an Ex-situ soil remediation is selected. In cases where the concentration of pollutant in the soil is very high or the pollutants are toxic, the excavation process is performed under a tent equipped with a specially-designed gas removal systems using active carbon filters that will guarantee the safety of employees and the surrounding area.
How are impurities removed from the air in soil remediation projects?
Jacobi Services offers a wide range of EcoFlow™ mobile filters for air treatment capable of handling flowrates up to 40,000m³/h per filter including the suitable activated carbon for such an application. Contact our application specialists to help and select a cost-effective activated carbon solution our find more information on inorganics or organics removal from air.
Ground water remediation contractors often use mobile filter type EcoFlow™ filled with activated carbon because
- Remediation jobs are limited in time
- Different remediation jobs often require different mobile filters
- On site spent carbon handling is often cumbersome and a closed loop solution is preferred.
- Designed for low pressure drop and excellent flow distribution
- The EcoFlow™ range are available in different size to treat different flow ranges
The Jacobi adsorbents are used in a wide range of applications. Adsorbents generally have a limited life time and need to be managed once they are saturated or the treatment objective is reached. Jacobi Services offers several recycling, valorisation or disposal services in different facilities, depending on the properties of the spent material.