Introduction toEnviroTech Electrocoagulation

Electro-what?!?

Environmental Protection Agency (EPA) Environmental Technology Verification Program (ETV)

• Research on ETIG (through KASELCO partner) Electro-coagulation technology is peer reviewed by ETV

• Here are research papers from ETV http://www.epa.gov/etv/pdfs/vrvs/06_vr_kaselco_vs.pdf http://www.epa.gov/etvprgrm/pdfs/testplan/06_tp_kaselco.pdf

Introduction toEnviroTech International

ELECTROCOAGULATION

Electrocoagulation HistoryElectrocoagulation 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

First Prototype CellFirst Prototype Cell

Early prototypeconfiguration

Interior Reactor Design

Present ApplicationsPresent Applications

• Metal Finishing - Plating• Remediation• Tannery (South Africa)• Emulsified Oils• Bilge Water• Die Casting• Truck Wash

EnviroTech Plating ApplicationEnviroTech Plating Application

Rectifiers and Controllers for

ElectrocoagulationReactors at EnviroTech

Electroplating

EnviroTech Electroplating Application

EnviroTech 2.27 tons/hour SystemEnviroTech 2.27 tons/hour System

EnviroTech Plating LaboratoryEnviroTech Plating Laboratory

EnviroTech Plating LaboratoryEnviroTech Plating Laboratory

• Spectroscope

• Distiller

• Digester

• AA (not shown)

EnviroTech LAB Atomic Absorption Spectrophotometer

Electrocoagulation Concepts

Chemical Reactions

• Metals + Oxygen + Iron• Hexavalent Chromium + Hydrogen Ion• pH• Oils + Oxygen• Bacteria + Oxygen or Hydroxyl Ion• Dyes + Hydrogen or Oxygen

Operating Costs – 12.5 tons/hour Unit

• Bilge Water with Refinery Water

Costs Reduced 50%

Productivity Doubled

Added 13 Ships

Eliminated One Shift

Operating Costs - Plumbing Plater

• Decorative Nickel/Chromium Process

Reduced sodium metabisulfite 90%

Eliminated Plant Odor

Eliminated Health Hazard

Reduced Sludge 40%

Reduced Treatment Cost 70%

Met Discharge Standards

EnviroTech Installation

• Nickel, Chromium, Zinc, others

Reduced Sludge 40%

Reduced Chemicals >90%

Eliminated 15,000 Kg Salts in River

Assured Compliance with Standards

EnviroTech Electroplating Application

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

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

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

EnviroTech PILOT TEST 3-22-04

Die-casting Waste

California Electroplating Plant

California Electroplating Plant

California Electroplating Plant

Reactor Sizes & CapacitiesReactor Sizes & Capacities• 2.5 GPM or 0.57 tons/hour• 10 GPM or 2.27 tons/hour• 25 GPM or 5.7 tons/hour• 75-150GPM or 17.1

tons/hour-34.1 tons/hour• UP TO 1500 GPM or 342

tons/hour

2.5 gpm (0.57 tons/hour) Reactor

Inside Reactor

10gpm (2.27 tons/hour) Reactor

25gpm (5.7 tons/hour) Reactor

Pilot Systems

• 0.57 tons/hour Sur-Flo Reactor Package• 0.57 tons/hour Sur-Flo W/Solids Separation• 0.57 tons/hour DAF• 2.28 tons/hour Sur-Flo Reactor Package• 2.28 tons/hour Hi-Flo Reactor Package• 0.028 cubic meter Filter Press

0.57 tons/hour Dissolved Air Flotation

2.28 tons/hour Sur-Flo Reactor Package

2.27 tons/hour Hi-Flo Reactor

2.27 tons/hour Hi-Flo Reactor

Candidate Wastes Candidate Wastes

• Low Organics (“Aqueous”)• Metals < 450 ppm for one-pass treatment• Batch Treatment higher levels• Conductivity > 350 microSiemens• pH one point less than permit• Polluted lake, river, or well water as a

drinking water source

Possible Applications Possible Applications

• Textile Dyes• Mixed Metals and Organics• Oil & Grease