The

50F5 Modular Ionizers Ionizer modules can be rack or flange mounted to fresh air inlet duct or recirculation plenum or duct Power consumption only 50 watts per module Oxygen present in air flow over tubes becomes bipolar - ionized and reactive Ionized air flows via HVAC air distribution ducts to building or enclosure No ozone produced.

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Heritage Lift Station San Jacinto River Authority The Woodlands, Texas 77380 A very smelly lift station is positioned within a few feet of the property line of a $1M home End of pipe systems including chemical drum scrubbers and chemical spray systems did not solve the problem Trans-Tech custom designed and installed an air ionizer system with positive pressure air feed on April 2, 2001 Within minutes the wet well exhaust was clean and odor free. Trans-Tech Energy and Environmental, Inc. 9212 Highland Road, Pittsburgh, PA 15237 Phone: 412-366-9177 www.trans-tech.org PATENT PENDING

Waste Processing Room Applications Exhaust Inlet Air Ionizers

Three Rivers, MI, Preliminary Treatment Building Air Ionization Retrofit Reznor air handling unit inlet hood to accept modular air ionizer units Four 50F5 modules are rack mounted. FS200 ion level controller controls ion level in room. Bipolar oxygen ionization eliminates odor and reduces corrosion. Ionized air flow enters room through air inlet ducts

Denver MWRD Sludge Processing Building Basement Pre-design Demonstration Scale Pilot 46 PPM H2S Five (5) model 50F5 ionizer modules installed in duct Ionized air Aisles prior to ionization 5 PPM H2S Aisles after ionization 0 PPM H2S

Denver MWRD Sludge Processing Building Basement Pre-design Pilot Pilot Ionization Plenum Ionized air flow Dump Zone 46 PPM H2S prior to Ionization Dump Zone 0-2 PPM H2S after ionization

MWRD Denver from Pilot to System Design and Installation 50F5 modular ionizers will be flange mounted to plenums Shown during construction is one (1) of two (2) twenty-four (24) module MWRD plenums Total treated volume includes the SPB Basement at 26,800 CFM (45,543 M3/Hr.) and Cake Storage Building at 16,700 CFM (28,373 M3/Hr.) MWRD ionization system coming on line September 2003.

Cost Comparisons Dewatering Buildings Cost ($/CFM) @12 AC/Hr. 10 PPM H2S Trans-Tech Air Ionization Biofilter Wet Chemical Scrubber Capital ($/CFM) 7 - 10 15 - 30 12 - 15 O&M 0.5 - 1.0 1.0 – 2.0 5.0 – 10.0

CONCLUSIONS Bipolar air ionization provides a simple and cost effective odor control solution Added value includes corrosion control, health and safety advantages Recommendation: Do not allow simplicity of concept to be misinterpreted as lack of need for thoughtful system design and engineering. Total costs - capital plus O&M are less than “end of pipe” odor control system alternatives.