Groundwater Remediation Filtration Systems

AST’s patented bead filter technologies can be applied to groundwater remediation as a:

• roughing filter to remove organic mineral precipitates in preparation of downstream treatment
• filtration device to remove iron and other metal precipitates (Heavy Metals)
• biological filtration for the removal of organics (BOD) including BTEX and MTBE compounds

The RCPG series with airlift recirculation is ideally suited to polish marginal ground waters of iron, sulfide, and ammonia often associated with anaerobic sources. The RCPG’s internal airlift in these applications not only aerates, but is also effective at carbon dioxide stripping that raises the pH.

Bead filters can polish waters prior to subsurface injection through well screens, leachate fields, or subsurface micro-irrigation systems. With excellent suspended solids capture (TSS removal) and organics reduction capabilities (BOD), the bead filters can simultaneously eliminate clogging potential due to direct straining of particles and biofouling.

Bead filters can capture particles above 50 microns across a wide flow range, and provide protection against fouling episodes driven by infiltration or runoff.

The units can play an integral role in the preparation of water destined to be injected as a disposal technique. Indifferent to heavy organic or solids loading, the bead filters can be placed virtually anywhere along a treatment sequence providing excellent solids reduction and contributing to the organic reduction required prior to deep well injection of fracking wastes. Here the bead filters are typically protected from oils, by a flotation process (dissolved air flotation), replacing much larger gravity clarifiers and/or sand filters that are subject to biofouling.

See Our Recent Case Study

Pilot RCPG System for Facultative Lagoon Polishing

In order to meet increasingly strict discharge standards, AST provided a trailer mounted pilot scale test unit to pull a side stream off of the current waste stream.

Read Case Study