The 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
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
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.
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
Abstract: Zeta Rod® Water Management Systems were selected to be utilized as the water treatment system of choice for the recirculating open-loop chillers, heat exchangers and cooling towers for the two HVAC Central Plants at a U.S. Government Data Facility in the Southeastern United States. The purpose of the system was to deliver significant water conservation while protecting critical cooling equipment in a manner consistent with a well managed traditional chemical water treatment program. The Zeta Rod system was included as part of an Energy & Water Conservation Project implemented by the Tennessee Valley Authority (TVA).
- 22% less make up water used
- 65% less waste water sent to the sewer
- 5.8 Million gallons of water saved during the first year
Click here for full Case Study: TVA Cooling Water Conservation Project
The 10,000 RT cooling tower at Formosa Plastics Group, Nan-Ya Plastics Jing-Hsin Power Plant in Taiwan uses Zeta Rod systems for fouling prevention, water conservation, chemical reduction and enhanced worker health & safety.
click here to link to the Nan-Ya Co-Gen Plant case study
Zeta Rod systems successfully provide water conservation, chemical eliminations and reductions, biofouling & scale prevention in this PVC plant.
click here to link to the Formosa Group, Nan-Ya Plastics Case Study
Tucson, Ariz., April 10, 2002 — After three years of closely monitored performance at the Los Angeles Convention Center of Zeta Corporation’s Zeta Rod™ system, the convention center won a city-wide environmental award and realized a three-year accumulated savings of $150,000.
Zeta Rod System at Los Angeles Convention Center
In making the announcement, Zeta President M. Michael Pitts, Jr, Ph.D. said that the City of Los Angeles Quality and Productivity Commission, after an eight-month evaluation process, singled out 20 city departments out of 114 applicants for honors in the categories of Customer Service, Environmental, Entrepreneurship, E-Business and Innovation and Creativity.
The Los Angeles Convention Center facilities staff won the Environmental Award for “the elimination of scale and corrosion cleaning, increased employee safety, reduced water consumption, longer equipment life and an annual savings of $50,000” in the operation of the huge building’s chillers and cooling towers. Continue reading