Wastewater H2S and Odor Control

Wastewater H2S and Odor Control

Hydrogen sulfide (H2S) has long been recognized as one of the most costly issues for municipal and industrial wastewater systems. This colorless gas is generated by anaerobic bacteria that persist throughout an entire system including force mains, lift stations, headworks, holding tanks, biosolids dewatering equipment, and digesters. 

In addition to its foul odor, H2S will form sulfuric acid and corrodes a variety of materials including concrete and metals. The Water Environment Federation estimates H2S corrosion causes $14B per year in sewer asset losses. 

Additionally, H2S is a major health and safety concern for operations personnel and is the leading cause of gas inhalation deaths in the United States according to the Bureau of Labor Statistics. 

Streamline’s Talon™ Reagent has been used to successfully treat H2S in more than a billion gallons of wastewater daily around the world. Streamline works with Utilities and Industry to develop the best solution for addressing the issues caused by H2S in both gaseous and aqueous forms.


Gas phase treatment and odor control in municipal collection systems and treatment plants:

  • Re-purpose existing wet scrubbers to use Talon™
  • Design and deploy new single or two phase wet scrubbers to eliminate H2S

Liquid phase odor and corrosion control in treatment plants and sludge processing facilities:

  • Deploy cost effective, cloud-connected chemical delivery systems that treat H2S using sensor technologies.

Industries where we have successfully completed projects:

  • Rendering and animal processing plants 
  • Food and Beverage plants
  • Pulp and Paper plants
  • Municipal wastewater treatment headworks and collections systems
  • Sour Biogas treating systems

How It Works

The Talon™ Process is a REDOX reaction that utilizes an oxidant plus the Talon™ chemistry to turn H2S into inert elemental sulfur which can not reform into H2S again. Utilizing the Talon™ Process to control H2S is among the lowest cost approaches in the industry. Further, the destructive reaction kinetics in wastewater are quite rapid with a 100 ppm sample of hydrogen sulfide being 80% reacted in the first minute and completely oxidized in 4 minutes. The Talon™ Process can remain viable for up to 4 hours in most wastewater applications and due to its low chemical feed requirements, it does not have negative effects on system microbiology. When using Talon™ in a wet scrubbing process, the molecule reacts with sulfide immediately and remains viable in excess of 60 days meaning fewer chemical changes and more value.  

Sulfide to Sulfur Redox (transparent)

Talon™ works most effectively within a pH range of 6 to 9 and is fed in combination with an oxidant, typically Hydrogen Peroxide or air. Talon™ can be employed in a variety of ways and is easily adaptable to existing treatment and collection systems. Importantly Talon is a pH neutral, non-hazardous and biodegradable material.