Municipal Drinking Water and Wastewater

Proven technology. Low lifecycle costs. Guaranteed performance.

In a world where environmental regulations are becoming more restrictive and financial resources are always tight, Envirogen delivers technology and service solutions for drinking water, wastewater and groundwater remediation that keep people safer and help communities thrive.

At Envirogen, we understand that the most important – and expensive – part of a treatment system installation is the operating cost over a 10- to 20-year life. We can provide guarantees for performance, lifecycle cost and the lifetime of an asset.

Drinking Water Treatment

For drinking water utilities, Envirogen provides treatment solutions based upon ion exchange, adsorptive media, and biological systems to treat new sources of groundwater or to put contaminated sources back into service.
As traditional water supplies become compromised through natural or man-made contaminants and as they become scarce or too expensive, Envirogen technology treats millions of gallons of drinking water worldwide.

Common Contaminants Treated

  • Arsenic
  • Chromium
  • Nitrate
  • Perchlorate
  • Radium
  • Uranium
  • Organics

Envirogen employs proprietary, high-performance ion exchange (IX) systems that provide superior treatment efficiency and process flexibility at a low operating cost and with minimal waste rates. In addition, Envirogen recently designed and installed the first biological treatment system in the United States for the treatment of perchlorate-laden groundwaters destined for drinking water use.

Nutrient Removal from Wastewater

Envirogen employs our proprietary fluidized bed reactor (FBR) technology at POTWs for nitrogen and phosphorus removal from wastewater before it is discharged into surface or ground water. Our technology has helped municipalities meet their nutrient removal mandates and has put them in a position to gain nutrient credits that can be sold to other dischargers, offsetting treatment costs and creating an additional revenue source.

Odor Control Solutions

Envirogen is at the forefront of municipal odor control with our biofilter and biotrickling filter technology for the elimination of hydrogen sulfide (H2S) and reduced sulfur compounds – with over 125 installations in the United States. These systems offer very high removal ratios, and compared with conventional odor control systems:

  • Simple operation & maintenance
  • Reduced chemical usage/storage
  • Reduced energy usage
  • Reduced carbon footprint
  • Lower overall emissions

Envirogen biofilters and biotrickling filters are available as both modular and built-in-place systems and can be sized to meet the air flow rate and the space requirements of a facility.

Landfill Leachate

Leachate from sanitary landfills is a complex, difficult-to-treat waste stream characterized by sometimes very high BOD and COD (some very refractive), high ammonia, high dissolved solids, heavy metals, adsorbable organic halide (AOX) and color. As regulations tighten, and POTWs increase charges for treating these streams and as capacity/space requirements become more of an issue, high performance crossflow membrane bioreactor (MBR) technology is widely becoming the solution of choice for effectively treating landfill leachate streams.

Envirogen’s approach to treating landfill leachate is to employ our crossflow MBR technology, based on multi-tubular ultrafiltration (UF) membrane process, coupled to high rate anoxic & aerobic bioreactors to efficiently treat difficult waste stream. If enhanced treatment is required to allow possible discharge of the treated stream direct to surface water or POTWs with very stringent limits, the MBR is followed by nanofiltration (NF) or reverse osmosis (RO) and/or activated carbon (AC).

Compared with traditional treatment approaches for landfill leachate, Envirogen MBRs offer:

  • Excellent effluent quality under varying flow and influent composition
  • Complete mineralization of degradable organics to CO2 + H2O
  • Retention of specialist micro-organisms by operating at concentrated mixed liquor and increased ‘sludge age’ (to degrade recalcitrant COD)
  • Substantially reduced generation of biological or chemical sludge
  • Compact and modular systems (easy to enlarge capacity)
  • High UF membrane flux and relatively simple ‘cleaning-in-place’ regime
  • Choice of different membrane materials, sizes and suppliers
  • Overall, low lifecycle costs

Research, Development and Piloting Capabilities

In addition to designing full scale systems, we also offer small, bench-scale studies and on-site pilot-testing to validate system design and fully meet the client’s requirements. Using fundamental research, we can identify the optimal and most effective system for a particular treatment.

Envirogen Experience