DoD Corrosion Prevention and Control Program demonstrates 20% make-up water reduction and 50% reduction in blow-down utilizing Zeta Rod Water Management Systems

Link to USACE ERDC ReportThe U.S. Army Corps of Engineers Research Lab (USACE ERDC/CERL) has published data collected during a 24-month demonstration/validation project in which the  Zeta Rod® Water Management System was evaluated for its ability to deliver documented water conservation results while providing corrosion, scaling, and biofouling protection in open-loop evaporative cooling systems. The report, titled “Demonstration of Non-Corrosive, Capacitance-Based Water-Treatment Technology for Chilled Water Cooling Systems” evaluated sites at four military installations in Arizona, California, and Georgia.  The study included systems where the technology was previously installed as part of a 2010 evaluation (ERDC/CERL TR-09-20) and added systems that broadened the range of water qualities and operating conditions evaluated.

Results and observations indicated that the technology delivered an average 20% reduction in makeup water usage and 50% reduction in blow-down, while meeting or exceeding criteria for protection of equipment from scale, corrosion, and biofouling. Reductions in make-up water represent a major water savings for an installation, while reductions of blow-down water represent a significant lessening of load on installation’s wastewater treatment system. (The direct use of the blow-down water for grey-water purposes appears feasible, but was not demonstrated.)

The technology was effective in water treatment and deposit control for a wide range of water conditions, from very soft, corrosion-promoting water to very hard, scale-promoting water. The validated applications are recommended for consideration by decision makers to reduce military installation chemical utilization and support Department of Defense Net Zero Water goals.

Click Here to link to the Full Study:  “Demonstration of Non-Corrosive, Capacitance-Based Water-Treatment Technology for Chilled Water Cooling Systems” Report Number: ERDC/CERL TR14-15

Related Papers:
Cooling Tower Institute (CTI) Green Technologies 2012

“Demonstration of Electronic Capacitor-Based Water Treatment System for Application at Military Installations” Report Number: ERDC/CERL TR 09-20

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.

Cooling water conservation: What does 5.8 million gallons of water look like?

Drawing showing 1 million gallons as a cube 51.1 feet on each side

source: USGS

TVA Cooling Water Conservation Project: Zeta Rod Case Study

Imagine a swimming pool, roughly the size of a football field, five stories deep.  This is the volume of water (5.8 million gallons of water to be exact) that one U.S. Government Data Facility in the Southeastern United States has saved in one year by employing Zeta Rod® Water Management systems technology for its open loop water treatment and cooling water conservation program.  Most people are amazed to learn that a cooling tower system requires so much water to operate and that cooling water use generally eclipses all other facility water requirements.

The Tennessee Valley Authority (TVA) included a Zeta Rod Water Management system as part of an Energy Project for one of its major clients in the Southeastern United States. Results documented a 22% decrease in make up water, 65% decrease in wastewater, elimination of chemicals and an annual water savings of 5.8 million gallons.

Click here: TVA Cooling Water Conservation Project