Groundwater Collection & Treatment System

Project Profile

  • Project Location : Maryland
  • Client Industry : Contractor / Consultant
  • Owner Industry : Manufacturing
  • Gwtt Scope : System Build / Civil Work / Equipment
  • Contract Value : $650K
  • Project Duration : 3 Months
  • Contaminants : 1,4-dioxane
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Key Project Details

  • Flow rate of 100GPM
  • Provided and installed all convenience pumps, piping, electrical and controls to a fixed treatment building.
  • Provided and installed pretreatment equipment and a customer-provided specialty, on-site regeneratable resin media equipment
  • Coordinated with subs to install site potable water/electric

PROJECT CHALLENGES

  • The customer-provided media/vessels had start-up issues and/or incurred delays. To remedy, GWTT provided temporary rental equipment from our equipment rental inventory so that the project could continue and stay on schedule

Project Narrative

GWTT was contracted to build and start up a groundwater collection and treatment system at a former electronics manufacturing facility in Hanover, MD. The system was designed to recover 1,4-dioxane from groundwater on site.

A combination of 6 shallow and deep recovery wells were installed with electric well pumps. Individual discharge lines with electric and controls were trenched back to the treatment system. Precast concrete vaults installed with a H20 doors were installed over each recovery well. The entire length of trenching for this project was approximately 2,000 ft.

GWTT installed a treatment system to collect and treat the recovered water. The treatment system was installed in a 30’x40’ metal building with heat, lights, and ventilation. All treatment components within the building were installed with secondary containment. The treatment system included an influent tank, transfer pumps, a chemical feed system, and bag filter and resin treatment. As part of the resin regeneration process, a boiler and steam reheater were required to also be installed and integrated.

The treatment system was designed and programmed to operate in batch production utilizing PLC and was outfitted with leak detection, pressure transmitters, pH transmitter, flow transmitter, and multiple level sensors. The system is controlled by a custom master control panel with a PLC, cellular telemetry, and VFDs for the transfer pumps. The system discharge was to an outfall. GWTT also coordinated and installed the power drop, water, and gas service for the project.