成果報告書詳細
管理番号20090000000258
タイトル*平成20年度中間年報 バイオマス等未活用エネルギー実証試験 バイオマス等未活用エネルギー実証試験 乳製品製造工程における食品残さのメタン発酵システム実証試験事業
公開日2009/8/18
報告書年度2008 - 2008
委託先名やまぐち県酪乳業株式会社 株式会社コプロス
プロジェクト番号
部署名新エネルギー技術開発部 バイオマスグループ
和文要約以下本編抜粋:1. 共同研究の内容及び成果等 【事業概要】 乳製品廃棄物および排水処理施設の脱水汚泥の嫌気性発酵によりメタンガスを発生。発酵ガスで蒸気ボイラーを稼動、熱エネルギーを回収する。メタン発酵は中温発酵。地下設置式メタン発酵槽で、温度管理が容易、地上部の有効利用ができるという特徴がある。
英文要約title: The proof examination is concerned with Methane Fermenter that makes the waste occur in manufacturing process of dairy goods raw materials. 
Summary In this field test, we collect biogas with the underground-installation-type methane fermentation tank. The raw material of biogas consists of dairy products waste(2.5wet-t/day )and dehydration sludge ( 3.2wet-t/day )which are exhausted from Yamaguchi Milk Industry Co.,Ltd. headquarters factory. The collected biogas is used as a fuel for the steam boiler. The surplus of the generated steam is used in the factory. In this field test,we did the start-up operation until May, 2007, and began the ratings operation in June, 2007. The result from April 1, 2008 to March 31, 2009 is as follows. 1)Energy conversion examination The average quantity of the biogas generation from April 1, 2008 to March 31, 2009 is 700Nm3/t-VS. This was 84.3% of the plan(830Nm3/t-VS). Moreover, the average quantity of the amount of the biogas generation was 251Nm3/day.We processed 2.18wet-t/day of the dairy products waste, and 3.38wet-t/day of the dehydration sludge in the methane fermentation facilities. 2)Energy effective use examination Results from April 1 ,2008 to March 31, 2009 are as follows. The thermal energy of 5040MJ/day was obtained from biogas. We had driven the methane steam boiler during 7.18 hours/day. The calorie needed in the methane fermentation facilities was 811MJ/day. The methane fermentation facilities supplied the calorie of 4240MJ/day to other facilities. 3)Final processing examination of the digestive juice About the supernatant liquor, it decreases more than the plan value about all measurement items, and it has been understood that the solid-liquid separation is efficient. However, about 20% of the amount of TS and the amount of VS of the dehydrated sludge has increased more than plans. All the measurement items of the final processing water have almost satisfied the plan value and there was no problem.
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