Improve the Environmental Footprint of Manufacturing

From process design to DBO installations, Envirogen purifies in-process and byproduct streams, manages difficult-to-treat wastewaters and provides answers for vapor phase emissions and odor control.

Envirogen Sustainable Emissions Control

A New Approach for Managing VOCs, HAPs and Odors in Industrial EnvironmentsIEC Mark

The Envirogen  Sustainable Emissions Control offering features the use of both biological and enhanced adsorption treatment technologies to address a broad range of contaminants covered under the Clean Air Act and state and local air quality regulatory programs. Used alone or together, the two-technology approach allows Envirogen to treat organic and inorganic, polar and non-polar emission constituents at varying concentrations and air flow rates.

Our biological and adsorbent technologies for emissions control are sustainable because they are safe and high performing. They offer the ability to reduce chemical and energy consumption, the opportunity for recycle/re-use and to lower carbon footprint compared with other treatment technologies. They are sustainable in another sense due to their low operating costs – with the ability to deliver significant savings over the lifecycle of a project.

Biological Treatment for Emissions ControlEnvirogen Biofilter

Envirogen offers a range of biological treatment systems for controlling industrial air emissions – including biofilters, biotrickling filters and combinations of the two technologies. The natural process of biofiltration uses microorganisms fixed to a porous filter medium to metabolize pollutants present in an air stream – consuming them as food or as an energy source. The end products of this degradation are typically water vapor, carbon dioxide and mineral salts. Biological treatment is ideally suited for contaminants that are water-soluble, polar and readily biodegradable. They are particularly effective for low loading applications at high flow volumes – including odors caused by hydrogen sulfide (H2S) and other reduced sulfur compounds. These systems offer very high removal ratios, and compared with conventional odor control systems, provide:

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

Envirogen biofilters 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. The people of Envirogen have extensive experience in deploying biological emissions control systems, with over 125 installations.


Learn about a refinery that saved over $700,000 per year in Activated Carbon with an Envirogen Sustainable Emissions Control solution.


EnviroHPA™ Systems – Advanced adsorption technologyEnviroHPA

Envirogen’s EnviroHPA™ Systems feature ultra-high performing adsorbent media in systems designed, guaranteed and operated by Envirogen under multi-year agreements. As part of the offering, EnviroHPA Systems compete effectively with other technologies that handle non-polar compounds at high loading and flow rates. For industrial vapor phase treatment, Envirogen employs synthetic adsorbents manufactured by The Dow Chemical Company (DOW). These adsorbents offer:


  • A very high surface area and optimized pore size distribution – characteristics that allow substantially increased absorption capacity, rapid adsorption kinetics, a range of desorption options and excellent physical and chemical stability.
  • Faster kinetics and higher contaminant loading translate into higher hydraulic rates with a smaller system footprintdecreasing operations and maintenance costs for the treatment process and lowering initial capital expenditures for overall site improvements and utilities.
  • Enhanced desorption characteristics that allow media to be regenerated in place with heat, steam, aqueous acids or bases – leading to an extended media bed life in use.


EnviroHPAIn facilities that use high volumes of activated carbon, EnviroHPA Systems can offer cost reductions of up to 50%, with carbon footprint levels reduced by as much as two-thirds. In addition to these advantages, EnviroHPA Systems offer the option for recycle/re-use because of the desorption properties of the advanced media.


Envirogen offers EnviroHPA Systems as a service in which system design and installation, media costs, regeneration and disposal are charged as an operating fee over the life of the system. They can be offered with low- to no-capital investment, guaranteed performance and predictable costs over the service life of the installation.

Tailored solutions based on complementary technologies

The complex nature of industrial emissions – which often feature a variety of different types of contaminants with differing regulatory profiles – are best addressed through tailored solutions that apply the best technology for individual and combined emission streams. The Envirogen Sustainable Emissions Control offering brings together two complementary technologies that are more efficient, more cost effective and more sustainable than what is available on the market today. By pairing them, we can extend the applicability of these solutions and fit them into an overall plan for emissions control for an industrial facility. That plan can form the basis of a long-term, cost-effective, sustainable solution.

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