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A new injection manifold system uses a single pump to evenly distribute liquids to multiple groundwater wells. This cost-effective solution ensures consistent flow for hydrological and geochemical studies.

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Area of Science:

  • Environmental Science
  • Hydrogeology
  • Chemical Engineering

Background:

  • Hydrological and geochemical studies often require injecting tracers and chemicals into groundwater.
  • Achieving even liquid distribution to multiple injection points can be complex and costly, particularly with multiple pumps.

Purpose of the Study:

  • To design and evaluate a novel injection system for uniform liquid distribution to multiple groundwater wells.
  • To address the challenges of cost and complexity associated with multi-pump systems.

Main Methods:

  • A single chemical metering pump and a custom injection manifold were utilized.
  • The system was designed with minimal metal components to handle low pH solutions.
  • A three-month pilot scale injection experiment was conducted at a Superfund site.

Main Results:

  • The injection manifold system successfully distributed influent evenly to 15 injection points.
  • Flow distribution consistency was maintained below 4% relative standard deviation (RSD) across two injection phases.
  • The system demonstrated durability and reliability over the three-month experimental period.

Conclusions:

  • The developed injection manifold system provides a cost-effective and efficient method for uniform liquid distribution to multiple wells.
  • The system is scalable to at least 16 injection points and adaptable for various liquid injection applications.
  • This technology can improve data quality in hydrological and geochemical research.