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Biomass Combined Heat and Power Catalog of Technologies

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Biomass Combined Heat and Power Catalog of Technologies ( biomass-combined-heat-and-power-catalog-technologies )

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EPA Combined Heat and Power Partnership Biomass CHP Catalog 4.2.3 Collection and Treatment System Capital and O&M Costs Wastewater Treatment Biogas As mentioned in Section 3.2.2, minimal gas treatment is required for direct use of biogas in boilers or small-scale reciprocating engines. Treatment might be required, however, in other applications. Based on analyses completed by the EPA CHP Partnership, fuel treatment costs can range from approximately $194,000 for a 300-kilowatt (kW) fuel cell CHP system ($650/kW) to approximately $369,000 for a 1-MW internal combustion engine CHP system ($370/kW).48 Manure Biogas As mentioned earlier, manure biogas systems are typically too small for gas treatment to be economical. Landfill Gas Total collection system costs vary widely, based on a number of site-specific factors. If the landfill is deep, collection costs tend to be higher due to the fact that well depths will need to increase. Collection costs also increase with the number of wells installed. Table 4-3 presents estimated capital and O&M costs for typical collection and treatment systems at typical landfills generating 500 cfm, 1,000 cfm, and 2,000 cfm of LFG. The capital costs for these systems include installation of the gas wells, gas collection system, emergency flare, and gas treatment system (dehydration, filtration, and compression), along with start-up costs. The annual O&M costs include all labor, materials, electricity, and administrative costs required to operate the equipment described previously. This operation includes the monthly optimization of gas collection at each wellhead. Table 4-3. Summary of Representative Collection and Treatment Costs ($2006) Estimated Gas Flow (cfm) Capital Costs Annual O&M Costs 500 1,000 2,000 $1.2 million $2.1 million $4.1 million $0.23 million $0.45 million $0.90 million Source: EPA, n.d. 48 EPA, 2007a. 4. Biomass Preparation 29

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