U.S. Army Corps of Engineers Issues Directive & Guidance on Non-Chemical Treatment of Cooling Tower Water

Link to USACE ERDC Site

U.S. Army Corps of Engineers
Engineering and Construction Bulletin

Subject: Non-Chemical Treatment of Cooling Tower Water
Applicability: Directive and Guidance

Non-chemical treatment of cooling tower water has been found to be a viable option for many projects. Significant water and cost savings can be realized depending on the projects cooling systems size, amount of yearly operating time for the system and condition of the make-up water. There are various types of non-chemical treatment such as: hydrodynamic cavitation, pulsed and static electric field, ultra-sonic, and magnetic. CERL has performed a study on Zeta Rod Water Management Systems, a  type of non-chemical treatment (High Voltage Capacitance Based – HVCB) used on the cooling systems at four U.S military bases. The bases selected had a wide range of make-up water use and climatic conditions. This system operated by installing insulated high voltage electrodes into the cooling tower piping creating a strong electrostatic field in the water stream.

Click here to view the USACE Bulletin

City of Tucson Crime Lab LEED® Gold: Cooling Water Conservation

City of Tucson Forensics Crime Lab - WSM ArchitectsZeta Library Collections: Case Studies

March 2012
City of Tucson Crime Lab: Enhanced Water Conservation, Chemistry Reduction and Re-Use Opportunities for Open Loop HVAC Water Treatment

The application of a Zeta Rod Water Management program allowed the Crime Lab to earn the LEED point under Water Efficiency and Innovation in Design. In particular, a measurable non-regulated water use savings that is at least 10% of the total calculated baseline design (166,000 gallons for the Crime Lab) for regulated (fixtures) water use is eligible for an exemplary performance ID point under WE Credit 3.  This project conservatively documented savings of  674% of the baseline calculation for an annual total of 1.1 million gallons.

click here to link to the Crime Lab first season project summary

Zeta Rod® Fouling Prevention Technology Integral to ASPEN Water’s Mobile Reverse Osmosis Water Purification Systems

http://www.zambotimes.com/archives/34303-WESCOM-fights-cholera-with-newest-water-purification-machine.html

ZAMBOTIMES
Sunday, July 17. 2011

WESCOM fights cholera with newest water purification machine
by 6CRGAFP/RVC-PIA9 BaSulTa

ISABELA CITY, Basilan (Philippines)— The Western Command (WESCOM), has deployed its newest water purification machine to barangay Culandanum in the municipality of Bataraza in Palawan to help its residents recover from the tragic cholera outbreak that struck the village, last March that left at least 27 persons dead. Continue reading

U.S. Government Releases Zeta Rod Cooling Water Conservation Study

Link to USACE ERDC SiteThe U.S. Army Corps of Engineers Construction Engineering Research Lab has published findings of a two-year Demonstration Validation Study that successfully compared Zeta Rod® Water Management Systems in side-by-side cooling tower installations against standard chemical water treatment programs.

The study, entitled “Demonstration of Electronic Capacitor-Based Water Treatment System for Application at Military Installations” presents the data and results of the study.

Abstract: The United States Department of Defense (DoD) has a specific legislative mandate to increase its conservation of water and energy. It also is interested in improving the effectiveness of open-loop, cooling water treatment processes at its installations worldwide, for purposes of extending the useful life of evaporative cooling equipment and reducing energy use/costs. A Cooperative Research and Development Agreement (CRADA) was approved to demonstrate that, without using chemical additives, a capacitor-based water treatment system is capable of (1) providing equivalent protection to a chemical treatment program in preventing scale, corrosion, and bio-fouling; (2) allowing cooling systems to be operated in an enhanced water conservation mode; (3) delivering measurable reductions in water usage over conventional methods; and (4) providing control, monitoring, and wireless data transfer via the Internet. Results documented in the subsequent demonstration and evaluation project showed the technology was able to meet every objective and also was able to deliver a 20% reduction in cooling water use over standard chemical treatment methods. Application of this technology would allow the DoD to (1) reduce chemical usage, exposure, and disposal expenses; (2) conserve water and energy; (3) facilitate water re-use; and (4) meet new goals for conservation of resources.

To read more, click here to link to the Army Corps of Engineers published study

Zeta Rod Reverse Osmosis 簡報檔-英文: Foxconn Group, Shenzhen China

Zeta Rods installed in Reverse Osmosis (RO) system | Foxconn Group, Shenzhen, ChinaZeta Library Collections: Case Studies

September 2007
Zeta Rod Reverse Osmosis 簡報檔-英文: Foxconn Group, Shenzhen China
Frigaid Corporation Ltd. - Zeta Rod Distributor for Asia www.zetarod.com.tw

Zeta Rods installed into a Foxconn Reverse Osmosis (RO) plant in Shenzhen China increases permeate rate from 66.6% to 76.4%,  reduces wastewater by 15% and prevents fouling of RO membranes allowing for energy savings and increased productivity.

click here to link to the Foxconn case study

Zeta Rod 簡報檔-英文 Formosa Plastics | Nan-Ya Jing Hsin Co-Gen Power Plant

Formosa Plastics | Nan-Ya Jing-Hsin Power PlantZeta Library Collections: Case Studies

September 2007
Zeta Rod 簡報檔-英文 Formosa Plastics | Nan-Ya Jing Hsin Co-Gen Power Plant
Frigad Corporation Limited - Zeta Rod Taiwan Distributor www.zetarod.com.tw

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

Biofouling Control in Heat Exchangers Using High Voltage Capacitance-Based Technology

Image of Tomar, Portugal

Zeta Library Collections: Technical Papers
July 2007

R. Romo, M. M Pitts and N. B. Handagama. "Biofouling Control in Heat Exchangers Using High Voltage Capacitance Based Technology" ECI Symposium Series, Volume RP5: Proceedings of 7th International Conference on Heat Exchanger Fouling and Cleaning - Engineering Conferences International, Tomar, Portugal, July 1 - 6, 2007

Abstract:
…Four different application case studies are presented in this paper in which High Voltage Capacitance Based (HVCB) technology was used to control biofouling. The applications include an evaporative cooling wall in a greenhouse in Oracle, Arizona; a cooling tower–condenser application in Phoenix, Arizona (study performed by Arizona State University under a U.S. Department of Energy grant); a cooling tower system using reclaimed industrial waste water at a wafer facility in Camas, WA; and a piping system for a major utility plant (Tennessee Valley Authority – TVA) using river water.

Continue reading

Zeta Rod® Systems Receive IAPMO Certification

Uniform Plumbing Code NSF61 Logo

February 8, 2006

Tucson, Arizona — Zeta Corporation is pleased to announce that its patented Zeta Rod® Systems have received IAPMO Research &Testing certification and will now bear the UPC(TM) NSF/ ANSI 61 mark, indicating that they conform to the standards for Drinking Water Systems Components – Health Effects, as well as to the plumbing and electrical requirements set forth in the Uniform Plumbing CodeTM Interim Guide Criteria 91-2005a. Although the products had previously been ETL listed to NSF-61, the association with IAPMO broadens the scope of the certification to include additional plumbing and electrical safety standards developed specifically for the patented Zeta technology. Continue reading