USACE Demonstration of Noncorrosive, Capacitance-Based Water Treatment Technology for Chilled Water Cooling Systems

Link to USACE ERDC ReportTechnical Papers
September 2014
Demonstration of Noncorrosive, Capacitance-Based Water-Treatment Technology for Chilled-Water Cooling Systems : ERDC/CERL TR-14-15

20% reductions in cooling tower make-up water and 50% reduction in blow-down were achieved at four U.S. Military Bases over a 24 month study period.

CH2M HILL evaluates Zeta Rod & GrahamTek RO systems to reclaim EDR wastewater

CH2M HILL

CH2M HILL, a global leader in full service engineering, construction and operations, was tasked to find a way to treat the concentrate stream from a water treatment plant located in Sherman, Texas USA. The City wanted to be able to treat this wastewater in order to reduce sewer and wastewater plant loadings, and to recover a portion of the wastewater as high quality water than could be used to increase plant finished water capacity. Continue reading

Case Study: Zeta Rods® improve legionella control in steel mill cooling towers

Photo of Nervacero steel mill cooling towers with Zeta Rods suspendedZeta Library Collections: Case Studies

June 2001
Zeta Rods improve legionella control in steel mill cooling towers

Nervacero steel mill in Vizcaya, Spain utilizes Zeta Rods in its legionella control protocol, allowing for elimination of bio-dispersant and reduction of sodium hypochlorite by 50%.

Click here to link to full Case Study

AIChE Update: New Techniques Tame Biofouling

Biofilm Word CloudZeta Library Collections: Articles

February 2000
AIChE Update: New Techniques Tame Biofouling
Chemical Engineering Progress | AIChE

Biofouling plagues many plants in the chemical process industries. Ongoing research is focusing on ways to control a range of bioorganisms, ranging from fungi to zebra mussels, that can cause these problems. Chlorine Pulsing, Electronic Rods [Zeta Rods], filters, anti-microbial coatings and corn-based polymers are discussed.  Click here to link to the AIChE CEP Magazine article.

Biosphere 2: Biofouling and Scale Prevention in CELdek® Wet Wall Evaporative Cooling

diagram of CELdek media functionZeta Library Collections: Case Studies
March 1999
Biosphere 2: Prevention of Biofouling and Scale in CELdek Wet Wall
Bioshere 2 experiences dramatic improvement in the cleanliness of wet wall CELdek® media with use of Zeta Rod systems. Expected media replacement was unneccessary and the climate wall can operate at peak efficiency.

Click here to link to the Biosphere 2 Wet Wall Case Study

Improving RO Performance with Zeta Rod Systems

Clean RO pressure chamberZeta Library Collections: Case Studies
December 1997
Improving RO Performance with Zeta Rod Systems
After three months, the membrane was removed and the vessel was seen to be completely clean. The membrane body, like the vessel surface,was completely free of bio-film.The removal of biofilm from the membrane was evidenced by a 4.98% increase in the rate of permeate recovery, from 77.26% to 81.11%.

click here to link to the full RO membrane case study