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Cooling Tower Water Blowdown Treatment
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Order Number
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Title
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Author
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Date
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Amberlite IRC-84 in Treatment of Water for Cooling Towers (TP-21B)
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D.G. Downing, J. Printz & D.L. Owens, Rohm and Haas Co.
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1960
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Abstract:
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Fuildized Moving Bed Ion Exchange for Treatment of Cooling Towers Blowdown (TP-111A)
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J. Newman, Liquitech, Inc.
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1973
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Abstract:
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Operating Experience with the Electro-Chemical Chromate Removal Unit (TP-139A)
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Joseph G. Duffey & Stephen B. Gale, Andco, Inc., Stanley Bruckenstein, State
Univ. of New York at Buffalo
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1975
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Abstract:
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Electrochemical Destruction of Chromate and Zinc From Cooling Tower Water (TP-156A)
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C.R. Schmitt & J.R. DeMonbrum, Union Carbide Corp.
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1976
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Abstract:
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Hexavalent Chromium Reduction in Cooling Tower Blowdown-Evaluation of the
Electrolytic Process (TP-167A)
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A.J. Reitano, Jr. & R.R. Lessard Exxon Research & Eng. Co.
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1977
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Abstract:
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The Reduction of Chromate by Amine Phosphonates at a Low pH (TP-172A)
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S.B. Twitchell & R.J. Lipinski, The Mogul Corporation
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1977
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Abstract:
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Chromate Handling Systems for Cooling Tower Blowdown (TP-192A)
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Fred Roensch, Anita Feltes & A.W. Oberhofer, Nalco Chemical Co.
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1978
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Abstract:
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An Innovation in Chromate Removal (TP-84-19)
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Stephen B. Gale Ph.D. & Philip P. O'Dennelle, Niagara Environmental Associates
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1984
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Abstract:
Electro-chemical reduction of hexavalent chromate to the
insoluble trivalent chromium salts has been an established
process. However, high conductivity, high pH, high suspended
solids and/or organic contamination could foul electrode
surfaces, resulting in loss of chromate removal capacity and
high operator maintenance. A new electrolytic process has been
developed which overcomes these problems and shows additional
advantages over the old type process actual operating data is
presented along with an economic evaluation of the new process.
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Hero Process - Recovery Reuse of Cooling Tower Blowdown and as a Preconcentrator for ZLD Application
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Charles H. Fritz, P.E., Black & Veatch Corporation &
V.J. Nathan, Aquatech International Corporation
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2001
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Abstract:
Silica concentration frequently limits the cycles of concentration in cooling
tower-circulating water. This is particularly true in areas like the
Western and Southwestern States and Mexico where the feed raw water
has high silica. HERO patented process addresses the
treatment of high silica feed water and hence treatment of cooling
tower blow down enabling the recovery and reuse of the blow down
water. This helps in increasing the cycles of concentration of the
cooling tower and also reduces the size of the disposal pond or a
brine concentrator in case of a zero discharge permit plant.
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Cooling Tower Blowdown Limitations: Case Studies of New Wastewater Permit Limits
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Jennifer Cunningham, Air Liquide Large Industries US LP
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2006
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Abstract:
For many Air Liquide facilities, the wastewater permit limitations
have become stricter (Total suspended solids, total dissolved solids,
total residual chlorine, copper, and arsenic). This paper will
describe the new wastewater permit parameters, the method(s) that were
used to resolve the issues, and the cost of justification.
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Copper Removal from Cooling Tower Blowdowns
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Christopher Howell and David Christophersen, Crown Solutions, Inc.
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2006
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Abstract:
Cooling tower blowdown discharge limits for inorganic metals are being
lowered more and more. This paper will document a case of a large
cooling tower application in the Gulf Coast that had a 17 parts per
billion (ppb) discharge limit placed on it and how ultra filtration
membrane technology was used successfully to lower the cooling tower
Blowdown copper concentration from 400 ppb to less than 17 ppb.
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Zero Blowdown for Cooling Towers
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Sam Owens, CHEMCO International, Inc.
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2007
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Abstract:
Converting water hardness and silica to an environmentally desirable
complex is the result of new cooling water treatment chemistry. Over
95% of standard blowdown water is saved and reused providing
significant water savings. This unique chemical approach provides
multimetal corrosion control. Solubility of the new product is greater
than 45% in ambient water. Solubility increases with temperature
elevation. The highly soluble hardness chemical undergoes a separate
reaction forming a fluid concentrate to be removed intermittently.
Silica removal is maintained at less than 100 ppm. This new chemistry
approach provides exceptional water savings in hard, alkaline cooling
waters.
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