Monitoring DNAPL levels in real-time has always been a challenge. Now with the help of the In-Situ Level TROLL® 500 instrument there is an effective way of keeping track.
DNAPL (dense non-aqueous phase liquid) contaminants have the unpleasant property of sinking below the water table and creating the potential for long term environmental problems.The difficulty for organisations who are engaged in the monitoring or remediation of brown field sites is that DNAPL materials such as chlorinated solvents, creosote or oils are simultaneously very common but have a slow migration profile. As such the impact on aquifers may take some time to show through.
DNAPL (dense non-aqueous phase liquid) contaminants have the unpleasant property of sinking below the water table and creating the potential for long term environmental problems.The difficulty for organisations who are engaged in the monitoring or remediation of brown field sites is that DNAPL materials such as chlorinated solvents, creosote or oils are simultaneously very common but have a slow migration profile. As such the impact on aquifers may take some time to show through.
The Level TROLL® 500 instrument provides an accurate method of providing data on the thickness of DNAPL levels in real-time and, if required, over the long term. The installation requires two devices; one for the DNAPL layer and the second in the water column. This allows the thickness of the DNAPL layer to be calculated by comparing the difference in density between the two liquids.
The Level TROLL® 500 has some very important features that allows it to cope with hostile conditions and remain operational for an extended period ;
- Titanium casing
- TROLL® Shield antifouling system
- A battery pack with typical life expectancy of up to 10 years
"Without a clear understanding of a site's DNAPL profile it is very difficult to choose the most appropriate remediation technique. What we have here is a mechanism that maximises the chance of getting it right first time."
To find out more about the DNAPL measurement procedure and the layer calculation equation download our datasheet (PDF opens in new window), take a look at the Level TROLL® 500 page on our website or call the Waterra-In-Situ's technical support team today on +44 (0)121 733 7743.
Waterra In-Situ - Experts in passive groundwater sampling techniques.
Waterra In-Situ - Experts in passive groundwater sampling techniques.
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