Blog Archives

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

Posted on by

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.

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

簡報檔-英文: Zeta Rods treat 6000RT cooling tower at Formosa Plastics Nan-Ya Chia-Yi Plant

Zeta rods installed into 6000RT cooling tower at Nan-Ya Plastics, TaiwanZeta Library Collections: Case Studies

September 2005
Formosa Plastics | Nan-Ya Chia-Yi Plant | Zeta Rod Case Study 簡報檔-英文

Frigaid Corporation Limited, Zeta Rod Asia Distributor www.zetarod.com.tw

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

CH2M HILL evaluates Zeta Rod system to reclaim EDR wastewater for the City of Sherman, Texas

CH2M HILLZeta Library Collections: Technical Papers
January 2001
Feasibility Study for EDR Wastewater Treatment & Recovery

“The Zeta Rod improved oper­abil­i­ty of the con­ven­tion­al RO treat­ment (rel­a­tive to no pre­treat­ment) although the mech­a­nism respon­si­ble for the observed reduc­tion in mem­brane foul­ing is not well under­stood. Feed pres­sures and WTC were more sta­ble dur­ing Zeta Rod use at 50% recov­ery than with­out its use at 15% recov­ery.”

Click here to link to CH2M HILL Feasibility Study for EDR Wastewater Treatment and Recovery

 

 

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

Posted on by

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 →

Solids Control in Solvent Extraction Circuits Using Electrostatic Dispersion

Zeta Rods Inserted into Solvent Extraction Piping

Zeta Library Collections: Technical Papers

February 1992
Solids Control in Solvent Extraction Circuits Using Electrostatic Dispersion
Morris Michael Pitts, Jr.
Society for Mining, Metallurgy and Exploration, Inc.
Annual Meeting, Phoenix, AZ February 1992

Elevation of sur­face charge den­si­ty on col­loidal par­ti­cles in the pres­ence of a high poten­tial elec­tro­sta­t­ic field is demon­strat­ed as a viable tech­nique for pre­vent­ing the accu­mu­la­tion of solids in sol­vent extrac­tion cir­cuits. This tech­nique per­forms with­out intro­duc­ing com­pounds that poten­tial­ly inter­fere with kinet­ics or with phase sep­a­ra­tion.

click here to link to the SME Technical Paper