JP2017170330A - 油脂含有排水処理システム及び油脂含有排水処理方法 - Google Patents
油脂含有排水処理システム及び油脂含有排水処理方法 Download PDFInfo
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Abstract
Description
図1は、第1の実施形態に係る油脂含有排水処理方法を採用した油脂含有排水処理システムを示す概略構成図である。
次に、図2を参照して、本発明の第2実施形態に係る排水処理システム200について説明する。本実施形態に係る排水処理システム200が、第1実施形態に係る排水処理システム100と異なる点は、メタン発酵槽3から汚泥及び処理水の一部を前段処理槽1へ返送するラインL6に代えて、酸生成槽2から汚泥及び処理水の一部を前段処理槽1へ返送するラインL7を備える点である。
次に、図3を参照して、本発明の第3実施形態に係る排水処理システム300について説明する。本実施形態に係る排水処理システム300が、第1実施形態に係る排水処理システム100と異なる点は、前段処理槽1が酸生成槽2を兼ねている点である。
実施例として、図1に示す排水処理システム100を準備した。
比較例として、図4に示すように前段での限定的な酸素供給状態における嫌気処理を行わない排水処理システム400を準備した。図4に示す排水処理システム400は、前段処理槽1を備えず、油脂含有排水を原水としてラインL1により、酸生成槽2に直接流入するシステムである。また、メタン発酵槽3からの汚泥及び処理水の一部を酸生成槽2に返送するラインL5は備えているが、当然ながら前段処理槽1に対して返送するラインL6は備えていない。
処理対象液(油脂含有排水に対応する液体)として、牛乳の100倍希釈液を用いた。このとき、処理対象液のCOD濃度は2,000〜2,300mg/L、処理対象液における油脂濃度の指標であるN−ヘキサン抽出物濃度は200〜260mg/Lであった。
実施例に係る排水処理システム100において上記実施例2の条件で運転した際の前段処理槽1及び酸生成槽2内の菌叢を分析した。その結果を図5(前段処理槽)及び図6(酸生成槽)に示す。また、比較例に係る排水処理システム400における酸生成槽2内の菌叢を分析した。その結果を図7に示す。なお、図5〜図7では、分析結果を円グラフとして示している。図5〜図7中の各数字は、菌叢中における各菌種の割合を百分率(%)で示したものである。
Claims (5)
- 油脂含有排水を限定的な酸素供給状態で嫌気処理する前段処理部と、
前記前段処理部での前段処理後の前記油脂含有排水を嫌気処理する嫌気処理部と、を備える油脂含有排水処理システム。 - 前記前段処理部と前記嫌気処理部とは独立している請求項1に記載の油脂含有排水処理システム。
- 前記前段処理部の酸化還元電位は−200mV〜−300mVである請求項1又は2に記載の油脂含有排水処理システム。
- 前記嫌気処理部から前記前段処理部に対して、汚泥及び処理水の一部を返送する返送部を備える請求項1〜3のいずれか一項に記載の油脂含有排水処理システム。
- 油脂含有排水を限定的な酸素供給状態で嫌気処理する前段処理工程と、
前記前段処理工程後の前記油脂含有排水を嫌気処理する嫌気処理工程と、を有する油脂含有排水処理方法。
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CN112358128A (zh) * | 2020-10-27 | 2021-02-12 | 河南诺水环保科技有限公司 | 一种垃圾渗滤液无膜法处理工艺 |
Citations (8)
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JP2000271593A (ja) * | 1999-03-24 | 2000-10-03 | Ebara Corp | 油脂含有排水の嫌気性処理方法 |
JP2006281035A (ja) * | 2005-03-31 | 2006-10-19 | Sumitomo Heavy Ind Ltd | 有機性廃棄物の処理装置及び処理方法 |
EP2208712A1 (en) * | 2008-12-09 | 2010-07-21 | Massai Giordano S.R.L. | Plant and process for producing biogas |
JP2014180629A (ja) * | 2013-03-19 | 2014-09-29 | Kubota Corp | 水処理方法および水処理システム |
JP2015054264A (ja) * | 2013-09-10 | 2015-03-23 | 住友重機械エンバイロメント株式会社 | 嫌気性処理設備及び嫌気性処理方法 |
JP2015131271A (ja) * | 2014-01-14 | 2015-07-23 | 水ing株式会社 | 油脂含有排水の処理方法および処理装置 |
JP2015208693A (ja) * | 2014-04-24 | 2015-11-24 | 水ing株式会社 | 排水処理方法および排水処理装置 |
WO2016103949A1 (ja) * | 2014-12-25 | 2016-06-30 | 水ing株式会社 | 油脂含有排水の処理方法及び処理装置 |
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JP2000271593A (ja) * | 1999-03-24 | 2000-10-03 | Ebara Corp | 油脂含有排水の嫌気性処理方法 |
JP2006281035A (ja) * | 2005-03-31 | 2006-10-19 | Sumitomo Heavy Ind Ltd | 有機性廃棄物の処理装置及び処理方法 |
EP2208712A1 (en) * | 2008-12-09 | 2010-07-21 | Massai Giordano S.R.L. | Plant and process for producing biogas |
JP2014180629A (ja) * | 2013-03-19 | 2014-09-29 | Kubota Corp | 水処理方法および水処理システム |
JP2015054264A (ja) * | 2013-09-10 | 2015-03-23 | 住友重機械エンバイロメント株式会社 | 嫌気性処理設備及び嫌気性処理方法 |
JP2015131271A (ja) * | 2014-01-14 | 2015-07-23 | 水ing株式会社 | 油脂含有排水の処理方法および処理装置 |
JP2015208693A (ja) * | 2014-04-24 | 2015-11-24 | 水ing株式会社 | 排水処理方法および排水処理装置 |
WO2016103949A1 (ja) * | 2014-12-25 | 2016-06-30 | 水ing株式会社 | 油脂含有排水の処理方法及び処理装置 |
Cited By (1)
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CN112358128A (zh) * | 2020-10-27 | 2021-02-12 | 河南诺水环保科技有限公司 | 一种垃圾渗滤液无膜法处理工艺 |
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