introduction to electrocoagulation kaselco presented by bruce j. lesikar v.p. engineering
TRANSCRIPT
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Introduction toELECTROCOAGULATION
Kaselco
Presented byBruce J. LesikarV.P. Engineering.
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Overview•What is electrocoagulation?•History of electrocoagulation: Old
technology with a new beginning at KASELCO
•Why is electrocoagulation important for our future?
•Examples of systems implementing electrocoagulation
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Water treatment approaches
•Physical•Biological•Chemical•Electrochemical
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Electrocoagulation cells
Huijuan Liu, Xu Zhao, and Jiuhui Qu. 2010.Electrocoagulation in Water Treatment
Monopolar connection Bipolar connection
Power supply
Sacrificial plates
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Ion Reactions
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EC Chemical Reactions
•Metals + Oxygen + Iron•Hexavalent Chromium + Hydrogen
Ion•pH•Oils + Oxygen•Bacteria + Oxygen or Hydroxyl Ion•Dyes + Hydrogen or Oxygen
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Electrocoagulation History
•1906 - Dieterich Patent•Bilge Water Treatment•1980’s - Revival•1988 - Article in Products Finishing
Magazine•1999 - First KASELCO Patent•2001 - Second KASELCO Patent•2003 - Third KASELCO Patent
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Sur-Flo Reactor Design
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Reactor Sizes & Capacities
•Sur-Flo Reactors▫2.5 GPM▫10 GPM▫25 GPM▫Link Multiple
Units (100 GPM)
•Hi-Flo Reactors▫200 GPM▫400 GPM▫600 GPM▫800 GPM▫1200 GPM▫1500 GPM▫Link Multiple
Units
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Early KASELCO Unit (Complete System)
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Facility Installation (Modular Design)
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Mobile Systems
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Why is electrocoagulation important for our future?•Water reuse•Dissolved solids become suspended solids
▫Therefore, physical separation is possible•Limit chemical addition•Removes a broad spectrum of industrial
pollutants
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Present Applications
•Metal Finishing - Plating•Remediation•Tannery•Emulsified Oils•Bilge Water•Die Casting•Truck Wash•More
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Operating Examples
•Bilge Water with Refinery Water Costs Reduced 50% Productivity Doubled Added 13 Ships Eliminated One Shift
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Operating Examples
•Decorative Nickel/Chromium Process Reduced sodium metabisulfite
90% Eliminated Plant Odor Eliminated Health Hazard Reduced Sludge 40% Reduced Treatment Cost 70% Met Discharge Standards
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Operating Examples
•Nickel, Chromium, Zinc, others Reduced Sludge 40% Reduced Chemicals >90% Eliminated 15,000 Kg/yr Salts in
River Assured Compliance with
Standards
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General Benefits
•Reduced treatment cost•Reduced chemical usage•Reduced sludge generation•Simple operation•Broad spectrum of treatment•Cleaner effluent
Less salt in dischargeLower concentration of contaminants
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Typical Results
• CONTAMINANT INFLUENT mg/l EFFLUENT mg/l• Oil Pipeline:
▫ TPH 2,900 31.7▫ Oil and Grease 2,180 <5.0
• Bilge Water:▫ Turbidity (FAU) 455 12
• Steel Coating:▫ Chromium 36.63 <0.005
• Cooling Tower:▫ Copper 1.96 <0.005▫ Zinc 6.921 <0.005
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Typical Results
• CONTAMINANT INFLUENT mg/l EFFLUENT mg/l
• Die Caster:▫ Iron 1,520 1.5▫ Nickel >25 0.12▫ Zinc 12 <LDL▫ Manganese 200 <LDL
• Plater:▫ Phosphate 135 25▫ Copper 14.1 0.2▫ Lead 377.6 0.8▫ Clarity (FAU) 2,737 57
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Diecasting Waste
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Example Applications
•Textile and Other Dyes•Mixed Metals and Organics•Oil & Grease•Bacteria/solids - Sewage Plants•Arsenic Removal•Metals in Mine Water•Plating Operations•Die Casting•Wire Drawing Operations
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Summary•Electrocoagulation is an electrochemical
treatment system•Electrocoagulation: Old technology with a
new beginning •Electrocoagulation is currently treating
water at various facilities.•Electrocoagulation is a part of the water
treatment solution, facilitating water reuse
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KASELCO
▫www.kaselco.com
▫KASELCOATTN: Douglas J. Herber, P.E.
Bruce J. Lesikar, Ph.D., P.E. P.O. Box 667
Shiner, Texas 77984