Testing of the KRIA Ionizing Water Treatment System for Waters Contaminated with Diesel, PCBs, and Nutrients (Nitrogen Forms)

Medina, Victor F.; Morrow, Agnes B.; Thomas, Catherine C.; Wade, Roy

doi:10.21236/ad1002925

Cited by 2 publications

(1 citation statement)

References 29 publications

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“…• Superoxide radical -ERDC has tested a reactor that generated superoxide radicals, the KRIA Water Treatment System (Medina et al 2016a). It was very effective in treating algae (Medina et al 2016b), and can superoxygenate water.…”

Section: Alternatives To Chlorinationmentioning

confidence: 99%

Evaluation of a proposed chemical treatment lock for the control of aquatic invasive species in the Chicago Area Waterway System (CAWS)

Medina¹,

Killgore²,

Hoover³

2018

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The purpose of this report is to review the concept of developing a special channel near the Chicago Area Waterway System (CAWS) to treat ship and barge traffic headed towards Lake Michigan with chlorinated water, minimizing the movement of aquatic invasive species (AIS) into the Great Lakes. This concept was proposed in a white paper titled Conceptual Aquatic Invasive Species Treatment System for the Chicago Area Waterways, which was prepared by CH2M for The Nature Conservancy (CH2M 2016). Victor Medina is an environmental engineer with a strong background in water treatment including disinfection, Jack Killgore and Jan Jeffrey Hoover are research fishery biologists who are experts in AIS, particularly the Asian Carp. All are members of the Environmental Laboratory (EL) of the U.S. Army Engineer Research and Development Center (ERDC). This project identifies several critical concerns that should be considered before pursuing such a course. All issues could be conceivably addressed with additional studies and/or extensive engineering. That said, some of the identified issues may be challenging to overcome. BACKGROUND The Chicago Area Waterway System (CAWS). The CAWS is a complex series of natural and man-made waterways and canals, including the Chicago River, the Chicago Sanitary and Ship Canal (CSSC), the Cal-Sag Channel, and the Calumet River (Figure 1). The system dates back to 1900 and was designed to move stormwater and treated sewage away from the City of Chicago's water supply to the Des Plaines River, which ultimately connects to the Illinois River and then to the Mississippi River (Duncker 2011). The CAWS also allows barge traffic to move from the Mississippi River to Lake Michigan through a series of locks and dams. There is concern that the CAWS serves as a conduit to allow AIS to move from the Mississippi to the Great Lakes (USACE 2014). Two groups of species are of particular concern: the Asian Carp, or bigheaded carp (genus-Hypophthalmichthys, there are three species) and the Apocorophium lacustre, a shrimp like amphipod which is commonly referred to as a scud (USACE 2014).

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Section: Alternatives To Chlorinationmentioning

confidence: 99%

Evaluation of a proposed chemical treatment lock for the control of aquatic invasive species in the Chicago Area Waterway System (CAWS)

Medina¹,

Killgore²,

Hoover³

2018

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Evaluation of the Destruction of the Harmful Cyanobacteria, Microcystis aeruginosa, with a Cavitation and Superoxide Generating Water Treatment Reactor

Medina

Griggs

Thomas

2016

Bull Environ Contam Toxicol

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Cyanobacterial/Harmful Algal Blooms are a major issue for lakes and reservoirs throughout the U.S.A. An effective destructive technology could be useful to protect sensitive areas, such as areas near water intakes. The study presented in this article explored the use of a reactor called the KRIA Water Treatment System. The reactor focuses on the injection of superoxide (O2 (-)), which is generated electrochemically from the atmosphere, into the water body. In addition, the injection process generates a significant amount of cavitation. The treatment process was tested in 190-L reactors spiked with water from cyanobacterial contaminated lakes. The treatment was very effective at destroying the predominant species of cyanobacteria, Microcystis aeruginosa, organic matter, and decreasing chlorophyll concentration. Microcystin toxin concentrations were also reduced. Data suggest that cavitation alone was an effective treatment, but the addition of superoxide improved performance, particularly regarding removal of cyanobacteria and reduction of microcystin concentration.

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Testing of the KRIA Ionizing Water Treatment System for Waters Contaminated with Diesel, PCBs, and Nutrients (Nitrogen Forms)

Cited by 2 publications

References 29 publications

Evaluation of a proposed chemical treatment lock for the control of aquatic invasive species in the Chicago Area Waterway System (CAWS)

Evaluation of a proposed chemical treatment lock for the control of aquatic invasive species in the Chicago Area Waterway System (CAWS)

Evaluation of the Destruction of the Harmful Cyanobacteria, Microcystis aeruginosa, with a Cavitation and Superoxide Generating Water Treatment Reactor

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