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 UPCNSF/ 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