成果報告書詳細
管理番号20090000000197
タイトル*平成20年度中間年報 バイオマスエネルギー地域システム化実験事業 先進型高効率乾式メタン発酵システム実験事業
公開日2009/8/1
報告書年度2008 - 2008
委託先名穂高広域施設組合
プロジェクト番号P05004
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. 研究開発の内容及び成果等 (1)収集運搬システム 1)収集量の推移 平成19年4月から平成21年2月までの月別収集量の推移を図1に示す。平成20年4月から平成21年2月までの平均収集量は102t/月であり、平成19年度の同期間平均値80t/月と比較すると28%増加し、計画値の57%を達成した。 家庭系ごみについては、市民見学会の実施、事業の状況についての回覧や新聞記事の掲載等により、収集量の増加に努めた。家庭系バイオガス回収ごみの比率の推移を図2に示す。ごみの総量に対するバイオガス回収ごみの収集量の比率は平成19年4月以降、微増傾向にある。 事業系ごみについては、協力事業所を増やすために、平成20年5月から収集運搬許可業者と協議を重ね、9月以降に新しく事業所を24件追加した。それにより、収集量は平均1.7t/週(0.3t/日)増加した。
英文要約Title:Test Business Project For Utilization Of Biomass Energy Generated In The Area/ Test Business Project Of High Efficient And Advanced Dry Anaerobic Composting (FY2007-FY2009) FY2008 Annual Report
Following are results of research and development for FY 2008. 1) Waste volume collected: The mean waste volume collected between April 2008 and February 2009 was 102 t/month, representing a 28% increase on the mean value of 80 t/month for the same period in FY 2007 or 57% of capacity. To secure waste volume, we conducted education programs for citizens and increased the number of businesses participating in our collection program. 2) Waste composition for biogas recovery: The overall composition of household and commercial waste together assessed in both May and November was 70% kitchen waste and 30% paper waste, with 1% unsuitable for methane production. 3) Kitchen waste composition: Household kitchen waste (November in item 2) tended to have more dietary fiber while commercial kitchen waste had higher sugar content. 4) Attitude survey: An attitude survey of 61 cooperating businesses conducted in June 2008 revealed the most common reasons for complying with waste separation of ‘making a contribution to waste recycling’ (65%) and ‘making a contribution to reducing carbon dioxide’ (47%), suggesting a high level of awareness of global environmental issues as a major motivating factor. 5) Barcode tracking of commercial waste: Year-round assessment of variation in composition by type of business and day of the week using the barcode system showed the ratio of paper in the commercial waste varied by day, and the mean weekly values ranged from 27% to 36%. Further analysis was conducted on type of business and ratios of paper waste. 6) Dry methane fermentation system: Long-term stable operation was demonstrated by a mean annual biogas yield for 1 t of waste was 230 Nm3. The degradable volatile solid (VS) load was increased from 3.5 to 4.5 kg/day for 1 t of methane fermentation sludge. 7) Mass balance: Mass balance of the total solid (TS) showed a gasification rate of 65% with a 27% decrease in the mass of the residue relative to the raw materials. 8) Biodegradable VS load: Laboratory-based experiments demonstrated the possibility of high load operation (biodegradable VS load of 5.0 or 5.5 kg/day for 1 t of methane fermentation sludge) without difficulty, even at 5.5 kg/day. 9) Dry residue combustion improver: Addition of 1 kg dry residue as a combustion improver improved the efficacy combustion by a difference in by 0.2 L in fuel volume to incinerate dewatered sludge compared to that for human waste alone. 10) Biogas contaminants: Biogas constituent analysis showed higher than recommended levels of silicon and siloxane for power generators. A white substance adhering to the surface of the power generator’s oxygen sensor may affect control of the generator. We will investigate the effects of silicon and siloxane on power generators and identify counter-measures.
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