Wastewater Lagoon Liner
A wastewater lagoon liner contains process water, leachate and stormwater so they reach treatment instead of the groundwater. SIGMA geomembrane is widely used as an impoundment and tank liner for chemical, petroleum and process wastewaters — a UV-exposed, puncture-resistant barrier with the broad chemical resistance these ponds demand, backed by a GCL where regulations call for a composite liner.
Chemical resistance for process wastewater
Process and industrial wastewater can carry an aggressive mix of chemistries. The HDPE geomembrane is unmatched as an impoundment and tank liner here because it combines a broad range of chemical resistance with high puncture strength and proven performance as a UV-exposed surface. Welded into one continuous impermeable sheet, the high density polyethylene liner keeps chemical, petroleum and process wastewaters safely contained in the lagoon for the life of the facility.
Leachate and stormwater impoundments
Like other impoundments, an HDPE geomembrane is a superior material for UV-exposed pond lining that safely collects and stores leachate and stormwater prior to treatment. The liner provides long-term containment assurance with minimal maintenance, so the impoundment keeps performing season after season. For sites where a single barrier is not enough, we pair the geomembrane with a geosynthetic clay liner (GCL) to form a self-sealing composite lagoon liner.
A coordinated lagoon liner package
Whether your design calls for a single geomembrane or a geomembrane-plus-GCL composite, SIGMA manufactures and exports both direct from the factory. You source one compatible wastewater lagoon liner system at manufacturer pricing, with the chemical resistance, puncture strength and UV durability that process, leachate and stormwater impoundments require.
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Wastewater lagoon FAQ
Is HDPE geomembrane suitable for chemical and process wastewater?
Yes. HDPE geomembrane has a broad range of chemical resistance and is widely used as an impoundment and tank liner for chemical, petroleum and process wastewaters. For unusual or aggressive chemistries, send us the substances involved and we will confirm compatibility before you order.
When do I need a GCL under the lagoon liner?
A geosynthetic clay liner adds a second, self-sealing low-permeability layer beneath the geomembrane. It is specified where regulations require a composite barrier or where the consequence of a leak demands redundancy — for example leachate ponds adjacent to sensitive groundwater.
Can the liner stay exposed to sunlight in an open lagoon?
Yes. The geomembrane is compounded with carbon black and UV stabilizers and is designed as a UV-exposed pond liner, so it can be left uncovered in open impoundments and still deliver long-term containment with minimal maintenance.
Request a wastewater lagoon liner quote
Tell us the lagoon area, the wastewater chemistry and destination port — we reply within one business day.