BIOMASS AND BIOGAS PLANTS

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Biomass and Biogass is another way to achieve ‘Green’ electricity or bio-fuel

A biomass power plant most often produces steam through combustion . As a renewable energy source, biomass can either be used directly via combustion to produce heat, or indirectly after converting it to various forms of biofuel. Conversion of biomass to biofuel can be achieved by different methods which are broadly classified into: thermal,chemical, and biochemical methods.

Another variation is a co-fired power plant fueled by coal or natural gas combined with a biomass source.

Biogas is the product of a biological process called anaerobic digestion. Bacteria decompose organic matter, in the absence of oxygen, and produce a gas that is approximately 60% methane and 40%carbon dioxide . The carbon dioxide is not removed before the biogas is used. Biomass sources for biogas include animal, human, and food waste; cellulosic agricultural products; and landfills.

An on-farm biogas production plant includes the following major components: Manure collection system; Anaerobic digester; Biogas collection system; By-product processing.

Manure from farm animals (dairy, swine, and poultry) is collected and stored as a liquid, slurry , or semisolid. It is then transported to an anaerobic digester. Three types of anaerobic digesters are in common use: a covered lagoon; a plug-flow system; an enclosed heated tank with a mechanical mixing system.

The gas is collected from the digester and piped to a combustion device to be used for space or water heating, or to generate electricity. The biogas may require additional treatment or scrubbing to refine it for use as a fuel. The remaining liquid and solids are separated. The nutrient-rich liquid is returned to the farm for reuse or for land application as a fertilizer. The solid fiber can be used for composting as a soil conditioner.

Our company is fully involved in Design and Construction Management of many Biomass and Biogas power plants able to produce more than 10MW of installed Nominal Power.

 

Location  Sangiacomo Vercellese – Italy
Year  2012
Client  Enervercelli
Scope of work  Civil Works design 
 MEP design
 Construction Supervision