Videos

Turn-key program reduced chemical expenses, solids , and energy costs.

A Northeast Acid Mine Drainage (AMD) treatment facility was using calcium hydroxide (lime) to precipitate iron from the mine pool water. The iron in the water stream is in soluble form known as ferrous iron (Fe2). Lime was used to...
Read More

The Challenge

Wastewater disinfection is critical for protecting public health and the environment. However, traditional disinfection control strategies—like flow-pacing—struggle to account for dynamic variability in wastewater conditions.

Factors that can influence how much disinfectant is actually needed at any given time include:

• Real-time hydraulics
• Operational fluctuations
• Background disinfectant chemical...
  Read More

A refinery in the Northeast was looking at options to dispose of 10,000 bbls of a high strength, high pH caustic wastewater that had been stored in one of its tanks.  The wastewater had very high phenol levels (14,000 mg/L), which did not allow for processing through the activated sludge...
Read More

ABSTRACT

The results of a full-scale trial initiated in May 2006 by the Manatee County Southwest Water Reclamation Facility are presented, and the impacts of peroxide regeneration of spent iron salts on the removal of hydrogen sulfide (H₂S) from anaerobic digesters at the SWWRF are examined. Treatment with hydrogen peroxide...
Read More

ABSTRACT

The paper will present results of a trial initiated in February 2004 by the San Antonio Water System (SAWS) to quantify the impacts of hydrogen peroxide injection prior to dissolved air flotation thickening of wastewater sludges. Since February 2000, the San Antonio Water System has successfully used iron salts...
Read More

Project Scope

A Midwest wastewater treatment plant was struggling with problematic hydrogen sulfide (H₂S) levels at two points within their facility arising from biosolids processing. The factors driving the need for H₂S control included worker safety, corrosion of electronics and concrete, implied regulatory limits and biosolids odor control. Along with...
Read More

Project Scope

A field demonstration was initiated in February 2014 by the Suffolk County Department of Public Works (SCDPW) to quantify the impacts of Peroxide Regenerated Iron-Technology (PRI-TECH®) as a more economic approach in maintaining biosolids odor control in the solids handling phase at the Bergen Point Wastewater Treatment Plant...
Read More

Project Scope

In upstate New York, a wastewater treatment facility historically utilized potassium permanganate to control odors at two locations in their biosolids processing operations. The first location was into the waste activated sludge (WAS) fed to a gravity belt thickener. The second location was into a mixed stream of...
Read More

ABSTRACT

Historically, ferrous chloride (FeCl₂) injection has been utilized to successfully control odors and corrosion within the sanitary sewer collection system of Fargo, North Dakota. However, increased odor complaints prompted an evaluation of the odor conditions present in the sanitary sewer system. Study results indicated that the current FeCl_{2...
Read More}