REMEDIATION APPROACHES

AquaBlok® provides a range of patented products to address many common remediation challenges. All of our products utilize a composite particle technology that consists of a coated core (typically stone aggregate). The particles act as a delivery system; placing fine-grained active ingredients through a water column or to appropriate target locations. AquaBlok is a proven technology with nearly 100 full-scale applications performed over the past decade.

Key Remediation Applications and Benefits

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Thin Layer Capping

AquaBlok will form a very low permeability isolation barrier over contaminated sediments in a layer thickness of 6-inches or less. This provides greater relative effectiveness than many feet of sand.

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In-Situ Treatment

AquaGate®+ provides a means to improve the performance and reduce costs of organoclay, activated carbon & other amendment materials in aquatic settings.

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Active (Reactive) Capping

AquaGate+ can be used alone or in combination to provide an approach (Funnel & Gate) to address groundwater upwelling or gas transmission assisted contaminant transport.

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Dredge & Cap

Dredging residuals or residual contamination post-dredging can be addressed with either a sand/AquaGate+ approach for treatment or a sand/AquaBlok ("Blended Barrier") approach for isolation and greater erosion resistance. The same approach can be used for EMNR or EMNA (Enhanced Monitored Natural Attenuation).

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Permeable Reactive Barriers (PRB)

AquaGate+ materials provide a lower cost means to obtain greater residence time (a thicker wall) when using a PRB approach.

 

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Funnel & Gate

The funnel and gate concept for treatment of contaminated sediment is similar in approach to groundwater remediation. A low permeability AquaBlok layer "Funnels" groundwater and any contaminants through a permeable treatment zone. The Permeable treatment zone is created using AquaGate+ materials as appropriate for the specific contaminant of concern. The primary benefit of this approach is to minimize the cost and the potential for contaminant breakthrough of the active treatment material.

 

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Integration With Other Remedial Approaches

Effective management of contaminated sediments is a complex and challenging process that may involve a range of alternatives. An integration of AquaBlok with more conventional management technologies may offer the best solution.

 

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ISCO/R SEALING

ISCO/R Sealing solutions are made possible through HoleBlok™ and HoleBlok+™. These products represent improved annular sealant materials that provide pollution prevention together with a range of other benefits over conventional coated bentonite pellets or chips. HoleBlok+ annular sealants combines two well-established and proven active ingredients – zero-valent iron (ZVI) and bentonite. The unique combination helps minimize the potential for cross-contamination of surficial ground water zones along annular spaces in environmental monitoring wells and also minimizes the potential for “rebound” - the post-absorption release of contaminants trapped by the bentonite seal. HoleBlok+™ is easy to handle/apply and is packaged in either 50-lb. plastic pails or paper bags.

 

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Sealing and non-contamination applications include seepage reduction and low permeability/containment alternatives in a wide variety of non-contaminated settings and circumstances.

 

 

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