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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

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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 →

Case Study: Zeta Rods® improve legionella control in steel mill cooling towers

Photo of Nervacero steel mill cooling towers with Zeta Rods suspendedZeta Library Collections: Case Studies

June 2001
Zeta Rods improve legionel­la con­trol in steel mill cool­ing tow­ers

Nervacero steel mill in Vizcaya, Spain uti­lizes Zeta Rods in its legionel­la con­trol pro­to­col, allow­ing for elim­i­na­tion of bio-dis­per­sant and reduc­tion of sodi­um hypochlo­rite by 50%.

Click here to link to full Case Study

Los Angeles Convention Center Environmental Award

Zeta Library Collections: Awards
March 2001

Link to City of Los Angeles LACC Award Announcement

Los Angeles Convention Center Environmental Award : “The envi­ron­men­tal­ly safe result of the Zeta Rod instal­la­tions at the Los Angeles Convention Center has been elim­i­na­tion of scale and cor­ro­sion clean­ing, increased employ­ee safe­ty, reduced water con­sump­tion, longer equip­ment life, and annu­al sav­ings of $50,000.”

AIChE Update: New Techniques Tame Biofouling

Biofilm Word CloudZeta Library Collections: Articles

February 2000
AIChE Update: New Techniques Tame Biofouling
Chemical Engineering Progress | AIChE

Biofouling plagues many plants in the chem­i­cal process indus­tries. Ongoing research is focus­ing on ways to con­trol a range of bioor­gan­isms, rang­ing from fun­gi to zebra mus­sels, that can cause these prob­lems. Chlorine Pulsing, Electronic Rods [Zeta Rods], fil­ters, anti-micro­bial coat­ings and corn-based poly­mers are dis­cussed.  Click here to link to the AIChE CEP Magazine arti­cle.

Biosphere 2: Biofouling and Scale Prevention in CELdek® Wet Wall Evaporative Cooling

diagram of CELdek media functionZeta Library Collections: Case Studies
March 1999
Biosphere 2: Prevention of Biofouling and Scale in CELdek Wet Wall
Bioshere 2 expe­ri­ences dra­mat­ic improve­ment in the clean­li­ness of wet wall CELdek® media with use of Zeta Rod sys­tems. Expected media replace­ment was unnec­ces­sary and the cli­mate wall can oper­ate at peak effi­cien­cy.

Click here to link to the Biosphere 2 Wet Wall Case Study

Improving RO Performance with Zeta Rod Systems

Clean RO pressure chamberZeta Library Collections: Case Studies
December 1997
Improving RO Performance with Zeta Rod Systems
After three months, the mem­brane was removed and the ves­sel was seen to be com­plete­ly clean. The mem­brane body, like the ves­sel surface,was com­plete­ly free of bio-film.The removal of biofilm from the mem­brane was evi­denced by a 4.98% increase in the rate of per­me­ate recov­ery, from 77.26% to 81.11%.

click here to link to the full RO mem­brane case study