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Expert is an international expert in odor and corrosion control in waste handling facilities, and has extensive experience in the measurement and assessment of odor/corrosion problems, the evaluation of control technology, and the implementation of odor and corrosion control strategies. He has collected hundreds of air samples from odorous processes and has overseen the analysis of these samples for odor concentration (dilutions to threshold), reduced sulfur compounds via GC-FPD, and volatile organic compounds via GC-MS. Through his 40+ years’ experience in the odor control field, he is knowledgeable regarding the sources and causes of odor generation in municipal and industrial waste treatment processes. He has conducted air dispersion modeling to estimate the downwind impact of odorous emissions. Expert utilizes sound, scientific methodologies to assess and rank the sources of odor at facilities with multiple odor sources.

As a professional engineer, Expert has state-of-the-art knowledge regarding the technologies utilized to minimize and control odors. He has designed innovative enclosures around waste processing equipment to minimize the volume of air to be treated and to improve conditions for workers. He has evaluated and designed the full range of odor treatment technologies including activated carbon adsorbers, packed-tower scrubbers, in-ground and in-vessel biofilters, bioscrubbers, and others. Expert also designed innovative systems to economically treat odorous air in the aeration tanks of wastewater treatment plants. He contributed a chapter on odorous air treatment for the Water Environment Federation’s Control of Odors and Emissions from Wastewater Treatment Plants.

Expert is an expert in the detection, monitoring, and control of hydrogen sulfide corrosion in sewers and waste handling systems. He has performed numerous assessments of sewer corrosion that has included continuous hydrogen sulfide monitoring, concrete pH testing, estimates of concrete loss, etc. He has conducted modeling to predict sulfide build-up in wastewater and the corrosion rates of concrete pipe affected by hydrogen sulfide.

Expert has evaluated and field-tested numerous chemicals designed to control hydrogen sulfide in sewers. These have included iron salts such as ferrous chloride and ferrous sulfate; oxidants including hydrogen peroxide, sodium hypochlorite, potassium permanganate, and sodium chlorite; pH adjusters such as magnesium hydroxide and sodium hydroxide; and nitrate-containing solutions designed to prevent hydrogen sulfide generation. Expert has had extensive experience with injection of pure oxygen for sulfide control, having designed the first U.S. “multiple U-tube oxygen dissolver” for controlling sulfide generation in a force main.

Expert has been an active member of the Water Environment Association’s Odor and Air Quality Committee for over 10 years, and previously served on the WEF Corrosion Control Task Force. He has made numerous technical presentation on odor and corrosion control for the Water Environment Federation, International Water Association, Air and Waste Management Association, New England Water Environment Association, Virginia Water Environment Association, Florida Water Environment Association, and other organizations. He has conducted training sessions for pollution control agencies in Massachusetts, New Hampshire, and Maine.

Township of Woodbridge, NJ - Biological Odor Control. Expert worked with a local firm to evaluate odor emissions and their control at a large wastewater pumping station. An innovative odor containment and treatment system was conceived and designed. A biological scrubber eliminated odor complaints, and the new odor containment system greatly improved working conditions.Oakland and Macomb Counties, MI - Odor and Corrosion Control. Expert was a key player in the assessment of corrosion and odors in a large deep-tunnel collection system serving suburban Detroit. A variety of recommendations were developed to mitigate odor releases and control corrosion in the tunnel system, including upstream chemical addition, improved ventilation with odor treatment, and protection of the concrete with an inert lining system.City of Los Angeles - Independent Odor Control Review. Expert was selected by the City of Los Angeles, the State of California, and U.S. EPA to provide an independent review of the City of LA Sewer Odor Control Program as required by a Court settlement regarding sewer odor emissions. The program included extraction and treatment of sewer air with 2-stage odor control systems at seven locations.Henrico County, VA - Odor and Corrosion Control Assessment. Expert worked with a national engineering firm to conduct a comprehensive assessment of odors and corrosion in a large wastewater collection system. Recommendations included an innovative iron-peroxide chemical addition process, a cost-saving biological scrubber system, and rehabilitation of corroded sewer lines.City of Mamaroneck, NY - Odor and Noise Control at a Solid Waste Transfer Station. Expert worked with Webster Environmental Associates to quantify the odor and noise emissions from the waste transfer station, and assess their impact via dispersion modeling. Recommendations included use of high-velocity dispersion fans, collection and treatment of odorous air, and multiple noise control systems.