Diffusion Resistance of PVC in Contaminated Soil (“Brown Fields”)
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When selecting materials for drinking water pipes, especially in areas with potential soil contamination, diffusion resistance through the pipe wall is a critical factor.
Key Property
Diffusion through the pipe wall is lower for PVC compared to Polyolefins (PO). This property is of particular importance for drinking water pipes installed in contaminated soil, specifically in areas known as 'brown fields,' which are often old industrial sites.
Applications
This inherent property of lower diffusion makes PVC pipes a favorable choice for safeguarding drinking water quality in potentially contaminated ground conditions, minimizing the risk of external contaminants migrating through the pipe wall into the potable water supply.
FAQ Section
Why is low diffusion important for drinking water pipes in brown fields?
Brown fields, old industrial areas, can have contaminated soil. Low diffusion through the pipe wall minimizes the risk of these contaminants migrating into the drinking water supply.
Is PVC the standard material for contaminated soil applications?
PVC has lower diffusion through the pipe wall compared to PO, making it important for drinking water pipes in contaminated soil.
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Albert Vaartjes
