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Anaerobic digesters in a sewage treatment plant. The methane gas is managed by burning through a gas flare. Anaerobic digestion is particularly suited to organic material, and is commonly used for industrial effluent, wastewater and sewage sludge treatment. [77]
Upflow anaerobic sludge blanket (UASB) technology, normally referred to as UASB reactor, is a form of anaerobic digester that is used for wastewater treatment. The UASB reactor is a methanogenic (methane-producing) digester that evolved from the anaerobic clarigester .
The egg-shaped structures house the plant's sludge digesters. The digesters use a process called anaerobic digestion to transform the sewage plant sludge byproduct into a form which can be used as fertilizer. [7] The plant gives monthly public tours of the digester eggs, for which reservations are required.
Anaerobic digesters for sewage sludge treatment at Arrudas Treatment Plant, Belo Horizonte, Brazil. Anaerobic digestion is a bacterial process that is carried out in the absence of oxygen. The process can either be thermophilic digestion , in which sludge is fermented in tanks at a temperature of 55 °C, or mesophilic , at a temperature of ...
"When domestic wastewater is treated, a solid by-product accumulates in the wastewater treatment plant and must be removed periodically to keep the plant operating properly. The collected material, called biosolids or more commonly "sewage sludge," is high in organic content, and contains moderate amounts of nutrients that are needed by plants.
The internal circulation reactor (IC reactor) is a form of anaerobic digester. It is primarily designed to treat wastewater. The IC reactor is an evolution of the UASB and EGSB digestion systems. The digester typically produces biogas with a high concentration methane (c80%). In essence the IC to improve digestion rates and gas yields.