Presentation is loading. Please wait.

Presentation is loading. Please wait.

Covered Anaerobic Digester Developing an Environmental Management System (EMS) Approach for Agriculture and Agribusiness Dec. 18, 2000 Julian Barham Barham.

Similar presentations


Presentation on theme: "Covered Anaerobic Digester Developing an Environmental Management System (EMS) Approach for Agriculture and Agribusiness Dec. 18, 2000 Julian Barham Barham."— Presentation transcript:

1 Covered Anaerobic Digester Developing an Environmental Management System (EMS) Approach for Agriculture and Agribusiness Dec. 18, 2000 Julian Barham Barham Farms Zebulon, NC

2 Case Study - Barham Farm Located - Johnston County, NC modern swine farm populated in 1994 owned and managed by Julian and Elaine Barham

3 Background Information 4000 sow - farrow to wean 4 gestation barns 2 farrowing barns slatted floors (grates) shallow pit/recharge flush pit 4/8 day cycle waste gravity flow

4 Process Diagram

5 Effluent from barns to anaerobic lagoon 40,000 gallons/day (total solids < 1.0%) lagoon surface = 6 + acres

6 Traditional Anaerobic Lagoon Design Freeboard Rainfall/Storms Storage Treatment Sludge Field Application EvaporationEmissions

7 Covered Anaerobic Digester ? 1 Odor Control 2 Energy Resource 3 Ammonia Emissions 4 Rainfall Exclusion (*)

8 Anaerobic Digester and Storage pond Treatment Sludge Biogas Anaerobic DigesterStorage Pond Rainfall Digester effluent

9 Lagoon Cover Design partial cover ? bank to bank ? lower cost (?) rainwater into lagoon odor reduction high maintenance rain exclusion no emissions (sealed) biogas storage low maintenance

10 Partial Cover - Practical Application !

11 Bank to Bank Cover - Practical Application

12 Things Involved Biogas Methane + CO 2 + H 2 S Greenhouse gas Options Flare IC Engine Micro Turbine Burner/Boiler

13 Equipment Needed Boiler for hot water - 10,000 gallon hot water storage - hot water for space heating and mats Engine for co-generation KW for peak shaving - engine heat recovery - hot water

14 Lagoon Performance

15 Covered Anaerobic Digester Effluent Organic Carbon - reduced 85% TKN - reduced 30% Total P - reduced 75% K - reduced 20% Ref: ASAE Proceedings 8th InterNatl Symp. Oct 2000 Eval. of Alternat. Waste Sys.

16 Digester Effluent Use: Apply at agronomic rate to low value hayland!

17 Digester Effluent Use: Nutrient rich for high value produce in green house environment!

18 Benefits Seen Biofilter - low energy input process Reduce Ammonia Emissions (NH 4 to NO 3) Lower pH

19 Greenhouse

20 Other Results and Conclusion It’s not “A Sows Ear to a Silk Purse” but Demonstrated Energy Resource Reduced Emissions Marketable Produce Manageable System ?


Download ppt "Covered Anaerobic Digester Developing an Environmental Management System (EMS) Approach for Agriculture and Agribusiness Dec. 18, 2000 Julian Barham Barham."

Similar presentations


Ads by Google