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Solutions for Odor & Corrosion Control
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Solutions for Odor & Corrosion Control

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  1. Solutions for Odor & Corrosion Control Providing solutions not just products Local representative since 1996 www.GoTDM.com 800.300.2844 Turnkey System integrator and distributor – proving regional field service and installation

  2. New company – cooperative venture including TDM and Gasho Associates More capabilities including field service of equipment Developing new technology for dry media System Integrator

  3. Contacts TDM:George Federico Technical Assistance – proposals, etc Gasho Associates – Shaun Kelley local sales Rep –

  4. Why work with us ?? • Offering multiple technologies • Biofilters • Carbon/media system • Chemical scrubbers • Thermal oxidizers • Odor prevention • Offering the best technologies • OdorToolBiofilters • Theia Air Carbon & Dry media • Altech Scrubbers • Colt Technolgies - Oxidizers • Venturi Aerators • Weatherford H2S Scavenger www.GoTDM.com

  5. Why work with us ?? We provide solutions we work with you to find the best solution for you and your client – we do not force fit what we sell to the project Knowledge and experience We know the technologies and are experts in treating air and odor Scope of supply to fit the project every project has different requirements. We can provide turnkey systems and even install them or just components - your call www.GoTDM.com

  6. Why work with us ?? The TDM/Theia Air difference We work with you when you are designing your system, installing your system and for years afterwards – all systems and equipment can have problems – we will be there for you if ours does We will be there for our customers – even when it is not our equipment www.GoTDM.com

  7. Why work with us ?? The TDM/Theia Air difference We provide a total approach to odor control. This means everything from collection to dispersion www.GoTDM.com

  8. What is an odor exactly Odor is a sensory reaction to one or more aromatic gases. Like noise, it is a perceived offense. Like Noise, this somewhat nebulous term CAN be scientifically defined

  9. Defining odors We define one OU ( odor unit) as the point at which the “average person” begins to detect an odor

  10. “Sewage Odors” Removing some of the compounds will reduce the odor but may not eliminate the problem We must reduce all of the odorous compounds to be successful

  11. What is Odor Control Exactly ?? Simply put, we are trying to prevent odorous compounds from reaching sensory perceptors ( people) Before we design the treatment equipment, we should define what is required to meet this goal

  12. Neighbor Lift Station Dispersion Modeling

  13. Treatment Technologies

  14. Biofiltration Basics In general, contaminated air passes through a fixed bed of media - Media has a thin film of water on the outside - Contaminant gases are solubilized into this film of water where they can be digested by the microbes

  15. Simple Schematic of conventional system 1st & 2nd Generation

  16. Just because something looks good on paper does not mean it will work in the field

  17. Sizing Criteria Surface Velocity –must be slow enough to allow capture – this affects the diameter of our unit but is not usually in play, EBCT – residence time, contact time, etc –a relatively useless measure, on its own, used by engineers to try to normalize a bid – useful EBCT or pore volume is what actually matters – not unlike carbon. To some extent, the more pore volume, the better the performance but there are diminishing returns

  18. Media Makes a Difference ! • Syntheticmedia is now widely used – media does not break down • The media will last but the performance is still not there Second Generation Better but not good enough

  19. Second Generation • Random Packed Media: • Void volume only 35% (Less Effective EBRT) • poor water distribution poor air flow • No means for control of biomass • Higher Pressure Drop, increases over time • Un-Predictable performance • Media is typically treated with chemicals, food, etc

  20. Void or pore volume is all that really matters – and they fall short Effective bed volume

  21. Dry = no bacteria and no solubilization Water and biomass buildup block the air sending it elsewhere Water build up and dry spots render another portion as useless

  22. So what is the actual effective EBCT ????

  23. Third Generation More advanced (Structured) Media Dual Zone Bed; Zone A provides an optimal area for a robust colony of bacteria to reside while Zone B is the “transfer zone” . Void Volume >95% (Effectively increases EBRT) Complete treatment, due to uniform distribution of air Low pressure drop, will not increase over time Maintains its structure over life ensuring predictable performance

  24. Structured Packing

  25. Structured Packing Bacteria Growth Vessel Size Water Layer Air flow

  26. Structured Packing 95 % Void Volume Vessel Size Water Layer Air flow

  27. 100% media utilization no Water Buildup No dry spots Vessel Size Water Layer Air flow

  28. Most Systems are overly complicated • larger media beds – big footprint, very heavy • Typically very expensive • Humidification systems – complicated – require a lot of maintenance • Multiple spray nozzles

  29. Pretty Simple One spray nozzle = even distribution of water No recirculation of water No humidification system

  30. Simple Rule, Simple System Control the water –► control the air, control the bugs

  31. Most biofilters fail due to poor control of the water – uneven water = uneven air = poor treatment = poor biomass By controlling the flow of water through the system we control the air flow keeping it evenly distributed

  32. What does the air flow pattern look like here ?

  33. Structured Packing Bacteria Growth Water Layer Air flow

  34. Taking it one step further • Biomass control. • Getting a strong healthy bacteria colony to grow is important but is only part of the battle • Keeping this biomass from fouling or otherwise interfering with the equipment is just as critical

  35. Biomass Engineering • Multiple contaminants require multiple bacterial colonies • This requires multiple strata to develop which strongly favors a taller media bed • We do not recirculate the water which allows this stratification to take hold

  36. Lighter VOC’s Mercaptans Aldehydes, Ketones TRS H2S

  37. Odortoolbiofiltersare compact, require little or no maintenance and use little water and no chemicals These systems offer high removal efficiencies and very low operating costs Permanent media means no replacement concerns

  38. Most Installations Worldwide 100% success rate

  39. Dry media Systems Taking on your toughest applications without all the mess and expense of wet scrubbers. New media that can take on the highest levels of H2S & mercaptans without a big footprint and without changing the media out frequently

  40. Thermal Oxidizers

  41. Oxidizers Thermal Oxidizers are effective on sludge applications RTO’s ( Regenerative Thermal Oxidizers) are the best approach – lowest maintenance and lowest operating costs They are slightly more expensive than RCO’s ( Recuperative thermal oxidizers) – usually 5-15%

  42. we offer skid mounted and field erected RTO’s ( Regenerative Thermal Oxidizers to treat any size air stream – we also offer RCO’s • Biosolids, Sludge, drying, etc is our specialty • We offer upgrades and retrofits to existing units to reduce your operating costs • 27 years of experience • Full field capabilities • Safe, reliable design

  43. Which one is right for me? • For sludge drying and other low VOC applications, RTO’s are the best choice. • RTO’s use a lot less fuel • RTO’s require a lot less maintenance • RCO’s typically require a rebuild after 5-7 years due to the heat exchangers rusting out

  44. Structured media Our design allows for removal of heat recovery media from the chambers quickly and easily Media can be cleaned and put back in all in one day This will be required once every 2-3 years