JP3808475B2 - 有機性汚泥の嫌気性消化システム - Google Patents
有機性汚泥の嫌気性消化システム Download PDFInfo
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- JP3808475B2 JP3808475B2 JP2004065745A JP2004065745A JP3808475B2 JP 3808475 B2 JP3808475 B2 JP 3808475B2 JP 2004065745 A JP2004065745 A JP 2004065745A JP 2004065745 A JP2004065745 A JP 2004065745A JP 3808475 B2 JP3808475 B2 JP 3808475B2
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- sludge
- digestion
- digested
- tank
- heating tower
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- 239000010802 sludge Substances 0.000 title claims description 108
- 230000029087 digestion Effects 0.000 title claims description 83
- 238000010438 heat treatment Methods 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 19
- 238000002485 combustion reaction Methods 0.000 claims description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 210000002249 digestive system Anatomy 0.000 claims description 2
- 238000000855 fermentation Methods 0.000 claims description 2
- 230000004151 fermentation Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 description 23
- 239000007789 gas Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000005416 organic matter Substances 0.000 description 7
- 230000018044 dehydration Effects 0.000 description 5
- 238000006297 dehydration reaction Methods 0.000 description 5
- 235000019621 digestibility Nutrition 0.000 description 4
- 239000006228 supernatant Substances 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
- Y02T50/678—Aviation using fuels of non-fossil origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
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- Treatment Of Sludge (AREA)
Description
前者の場合、汚泥に加熱空気を直接に接触させるので、排気の際に脱臭処理を行う必要がある。また、加温過程では、消化槽からの消化汚泥は濃縮されずに加温されるので、かなりの熱量を必要とする。
1) 高温度・高濃度で汚泥を嫌気性消化するので、消化速度が従来の中温(40℃前後)メタン生成菌による嫌気性消化の2倍程度まで向上し、消化率が従来の40%前後から60%以上になるため、最終処分すべき汚泥の量が大幅に減少する。
処理される。
上記遠心濃縮機5は、消化汚泥を濃縮する作用のほかに、分離液(離脱液)を抽出させる分離槽の作用を有する。消化槽2内の汚泥を53℃前後の高温で、かつ固形濃度3.7%の高濃度に保って高温・高濃度消化するので、消化効率が略2倍に向上して消化時間が短縮されるとともに、消化率が従来の40〜50%から60%以上に向上する。さらに上記遠心濃縮機5にて汚泥循環ラインCにおいて消化汚泥の一部を濃縮して分離液を除去することにより、消化槽2に汚泥の一時貯留槽としての機能をもたせることができる。
2 消化槽
3 汚泥貯留槽
4 遠心脱水機
4’濃縮・脱水兼用機
5 遠心濃縮機
6 加温塔
7 循環路
8 熱交換器
9 消化ガス燃焼炉
10a蒸気供給管
10b蒸気戻し管
11 消化ガス供給管
12 排出路
13 煙突
14 空気供給管
Claims (3)
- 有機性汚泥を消化槽でメタン醗酵により嫌気性消化し、消化した汚泥を引き抜いて遠心脱水機により脱水した汚泥ケーキを焼却するなどして廃棄する消化システムにおいて、
前記消化槽の下流側に消化汚泥の一部を加温するための加温塔を設け、この加温塔と前記消化槽との間に前記消化汚泥を濃縮するための濃縮機を介設するとともに、前記加温塔で加温した汚泥を前記消化槽へ循環するための循環路と、前記消化槽で発生する消化ガスの燃焼炉と、この燃焼熱により過熱水蒸気を発生させる熱交換器とをそれぞれ設け、
前記加温塔内で濃縮した消化汚泥を過熱水蒸気に直接接触させて加温した後、凝縮させず水蒸気の状態で熱交換器に戻すようにした
ことを特徴とする有機性汚泥の嫌気性消化システム。 - 前記消化槽内の消化汚泥の一部を引き抜き脱水処理するための前記遠心脱水機を前記濃縮機に兼用する請求項1記載の有機性汚泥の嫌気性消化システム。
- 前記濃縮機にて消化汚泥の一部を濃縮して分離液を除去することにより、前記消化槽に汚泥の一時貯留槽としての機能をもたせた請求項1または2記載の有機性汚泥の嫌気性消化システム。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004065745A JP3808475B2 (ja) | 2004-03-09 | 2004-03-09 | 有機性汚泥の嫌気性消化システム |
Applications Claiming Priority (1)
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JP2004065745A JP3808475B2 (ja) | 2004-03-09 | 2004-03-09 | 有機性汚泥の嫌気性消化システム |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005254054A JP2005254054A (ja) | 2005-09-22 |
JP3808475B2 true JP3808475B2 (ja) | 2006-08-09 |
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JP2004065745A Expired - Fee Related JP3808475B2 (ja) | 2004-03-09 | 2004-03-09 | 有機性汚泥の嫌気性消化システム |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5329369B2 (ja) * | 2009-11-03 | 2013-10-30 | 株式会社テクノプラン | 汚泥可溶化装置及び汚泥可溶化方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2729624B2 (ja) * | 1988-03-03 | 1998-03-18 | 建設省土木研究所長 | 有機性汚泥の処理方法 |
JP2641009B2 (ja) * | 1992-08-11 | 1997-08-13 | 株式会社荏原製作所 | 有機性廃棄物の嫌気性消化処理方法 |
JP3814855B2 (ja) * | 1995-12-05 | 2006-08-30 | 栗田工業株式会社 | 有機性排液の嫌気処理方法 |
JP3781216B2 (ja) * | 1996-09-19 | 2006-05-31 | 株式会社荏原製作所 | 嫌気性消化汚泥中の難分解有機物の再消化を可能とする嫌気性汚泥消化法及び装置 |
JP4412538B2 (ja) * | 2004-02-26 | 2010-02-10 | Jfeエンジニアリング株式会社 | 有機性廃棄物の処理方法 |
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2004
- 2004-03-09 JP JP2004065745A patent/JP3808475B2/ja not_active Expired - Fee Related
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