Tom Ferrero Elkhart Environmental Processing Corp

Transcription

1 Tom Ferrero Elkhart Environmental Processing Corp

2 Overview owhy Odor Control? oavailable Techniques obiofilter Construction

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6 Safety ocorrosion Hydrogen Sulfide oexplosion Methane ohealth Air borne disease

7 Odor Control Strategy o Identify Sources of Odors Septage Receiving Area Screening and Grit Removal Equalization Tanks Processing Dewatering Filtrate o Estimate Degree of Control Required based on proximity of downwind receptors o Evaluate Options o Select Appropriate Strategy o Design and Construct

8 Odor Control Strategy obest Management Practices Use quick-disconnect fittings Avoid Free Fall of septage Provide washdown facilities for spills Ventilate tanks to odor control system Everything inside!

9 Odor Control Strategy obest Management Practices

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11 Odor Control Strategy obest Management Practices

12 Odor Control Strategy obest Management Practices

13 Odor Control Strategy obest Management Practices

14 Odor Control Strategy obest Management Practices

15 Available Techniques oremote Site oodor counteractants (Misting) owet Scrubber oactivated Carbon obiofilter

16 Available Techniques oremote Site

17 Available Techniques omisting (odor counteractants) Sprayed into the atmosphere React with odorous compounds Encapsulate odorous compounds Substantial cost of chemicals 30 to 40% reduction of odors

18 Available Techniques oodor Counteractants

19 Available Techniques oodor Counteractants

20 Available Techniques oodor Counteractants

21 Available Techniques owet Scrubber

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23 Available Techniques oactivated Carbon Absorber

24 Available Techniques oactivated Carbon Absorber

25 Available Techniques obiofilters -Passing odorous air through a media containing microbial populations -Microbes use the odorous compounds as a food source -Media must be kept moist and air must have good paths through media -Requires long contact times and low velocities -Systems come in a variety of designs and media configurations

26 Available Techniques obiofilters

27 Technique Cost Factors Advantages Disadvantages Wet Scrubber Activated Carbon Absorber Biofilters Odor Counteractants Moderate Capital and operating costs Cost depends on frequency of carbon use Low capital and O&M costs Cost dependent upon chemical usage Effective and Reliable Simple, few moving parts, effective Simple, minimum O&M Low Capital cost High Chemical Use, and spent chemical to dispose Only applicable for dilute streams Design criteria not well established, large land area Limited odor removal efficiency

28 Biofilter Construction

29 Biofilter Construction

30 Biofilter Construction

31 Biofilter Construction

32 Biofilter Construction

33 Biofilter Construction

34 Biofilter Construction

35 Typical Design Criteria for Biofilters Parameter Hydraulic Loading Detention Time Media Depth 2-10 cfm/sq ft seconds 3-5 ft Media ph 6-8 Pore Volume 40-50% Moisture Content 50-60% Media Constitutents Humidity of inlet air % Value Bark Mulch, hardwood chips, biosolids or leaf compost Recommend air changes 6 volume changes/hour

36 Typical Design Criteria for Biofilters Parameter Hydraulic Loading Detention Time Media Depth 2-10 cfm/sq ft seconds 3-5 ft Media ph 6-8 Pore Volume 40-50% Moisture Content 50-60% Media Constitutents Humidity of inlet air % Value cfm / 2500 sf Bark Mulch, hardwood chips, biosolids or leaf compost Recommend air changes 6 volume changes/hour

37 Typical Design Criteria for Biofilters Parameter Hydraulic Loading Detention Time Media Depth 2-10 cfm/sq ft seconds 3-5 ft Media ph 6-8 Pore Volume 40-50% Moisture Content 50-60% Media Constitutents Humidity of inlet air % Value 6 cfm / sq ft Bark Mulch, hardwood chips, biosolids or leaf compost Recommend air changes 6 volume changes/hour

38 Typical Design Criteria for Biofilters Parameter Hydraulic Loading Detention Time Media Depth 2-10 cfm/sq ft seconds 3-5 ft Media ph 6-8 Pore Volume 40-50% Moisture Content 50-60% Media Constitutents Humidity of inlet air % Value 6 cfm / sq ft 4 ft Bark Mulch, hardwood chips, biosolids or leaf compost Recommend air changes 6 volume changes/hour

39 Typical Design Criteria for Biofilters Parameter Hydraulic Loading Detention Time Media Depth 2-10 cfm/sq ft seconds 3-5 ft Media ph 6-8 Pore Volume 40-50% Moisture Content 50-60% Media Constitutents Humidity of inlet air % Value 6 cfm / sq ft 40 seconds 4 ft Bark Mulch, hardwood chips, biosolids or leaf compost Recommend air changes 6 volume changes/hour

40 Questions? Tom Ferrero Elkhart Environmental Processing Corp (267)