SEWAGE TREATMENT FACILITY AND ITS OPERATIONAL METHOD

To provide a sewage treatment facility and its operational method capable of reducing an amount of carbon emission by effectively utilizing biogas generated in anaerobic digestion process.SOLUTION: A sewage treatment facility includes a digester 10 that digests biogas feedstock to produce biogas, a...

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1. Verfasser: YAIDE NORIHIRO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a sewage treatment facility and its operational method capable of reducing an amount of carbon emission by effectively utilizing biogas generated in anaerobic digestion process.SOLUTION: A sewage treatment facility includes a digester 10 that digests biogas feedstock to produce biogas, a purifier 20 that purifies biogas generated from the digester to obtain methane gas, a power generation facility 30 that generates electricity from at least part of the methane gas, a methane gas storage part 42 that stores the remainder of the methane gas as methane gas, a methanol storage part 44 that converts the methane gas into methanol or formic acid and stores it, a power generation facility 50 that uses the electricity from the power generation facility, and an operation support system 60 that compares the amount of power supply derived from the methane gas from the digester and the power demand in the power utilization facility to determine the amount of methane gas to be supplied to the power generation facility.SELECTED DRAWING: Figure 3 【課題】嫌気性消化処理にて発生するバイオガスを有効活用して、カーボン排出量を削減することができる下水処理施設及びその運転方法を提供する。【解決手段】バイオガス原料を消化処理してバイオガスを生成させる消化槽10と、消化槽から発生するバイオガスを精製してメタンガスを得る精製装置20と、メタンガスの少なくとも一部から電力を発生させる発電設備30と、メタンガスの残部をメタンガスのまま貯蔵するメタンガス貯蔵部42、もしくはメタノール又は蟻酸に変換して貯蔵するメタノール貯蔵部44と、発電設備からの電力を利用する電力利用設備50と、消化槽からのメタンガスに由来する電力供給量と、電力利用設備における電力需要量を比較して、発電設備に供給するメタンガスの量を決定する運転支援システム60と、を具備する下水処理施設。【選択図】図3