Membrane Technology

Both municipalities seeking wastewater treatment and industries exploring water reuse strategies are finding membranes to be an increasingly viable and economical solution to their water filtration challenges. With advances in technologies, today’s membranes possess several features that can make them a more competitive option than conventional systems including (but not limited to):

  • The ability to remove contaminants that other technologies cannot
  • A compact size and smaller footprint, requiring much less space than other systems
  • Automated testing and controls means increased ease of operations for plant staff

Chester Engineers has significant membrane filtration and membrane desalination experience for water and wastewater treatment systems in both municipal and industrial environments. Our staff is knowledgeable in the use of the following separation technologies:

  • Ultrafiltration (UF)
  • Microfiltration (MF)
  • Nanofiltration (NF)
  • Seawater Reverse Osmosis (SWRO)
  • Brackish Water Reverse Osmosis (BWRO)
  • Membrane Bio-Reactor (MBR)

Municipal Applications

Chester Engineers’ municipal experience providing engineering services for projects involving membrane technology include the following:

  • Potable Drinking Water
  • Membrane Softening (Replaces Lime Softening)
  • Dissolved Solids Reduction or Removal
  • Particulate Removal
  • Color Removal
  • Wastewater
  • Water Reuse
  • Water Reclamation
  • Water Reinjection

Industrial Applications

Chester has utilized membrane technology to assist industrial clients for the following:

  • Produced Water Treatment - Oil & Gas
  • Boiler Feed Water
  • Cooling Tower Feed
  • Process Water
  • Ultra-pure Water
  • Industrial Wastewater Treatment
  • Water Reuse
Summary of Membrane Process Characteristics Effective Particle Rejection Yes/No
Monovalent Ions Multivalent Ions Viruses Bacteria Suspended Solids
Microfiltration No No No Yes Yes
Ultrafiltration No No Yes Yes Yes
Nanofiltration No Yes** Yes Yes No
Reverse Osmosis Yes Yes Yes Yes No