JP2010042363A - 脱窒処理方法及び脱窒処理装置 - Google Patents
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- 239000000852 hydrogen donor Substances 0.000 claims abstract description 129
- -1 nitrate ions Chemical class 0.000 claims abstract description 56
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- 239000012295 chemical reaction liquid Substances 0.000 claims abstract description 38
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 27
- 238000005469 granulation Methods 0.000 claims abstract description 13
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 31
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
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- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 241001453382 Nitrosomonadales Species 0.000 description 2
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- 229910001424 calcium ion Inorganic materials 0.000 description 2
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- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000003809 water extraction Methods 0.000 description 2
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- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
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- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 150000003868 ammonium compounds Chemical class 0.000 description 1
- 229920006318 anionic polymer Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
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- 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
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
【解決手段】本発明の脱窒処理方法は、完全混合型の脱窒部として、第1脱窒部と第2脱窒部とを設置し、前記第2脱窒部内の反応液の一部を前記第1脱窒部に供給した上で、前記第2脱窒部内での被処理水の水理学的滞留時間における前記第1脱窒部内での水素供与体の濃度と、前記第2脱窒部内での被処理水の水理学的滞留時間における前記第2脱窒部内での水素供与体の濃度との差が、脱窒部内の脱窒菌の自己造粒化を誘導する濃度差となるように、少なくとも前記第1脱窒部に水素供与体を供給し、前記第2脱窒部に返送する。
【選択図】図2
Description
6NO3 − + 5CH3OH → 3N2 + 5CO2 + 7H2O + 6OH−
Claims (7)
- 完全混合型の脱窒部に被処理水を連続供給すると共に、水素供与体を供給し、被処理水中に含まれる硝酸イオン、亜硝酸イオンを脱窒菌により窒素に還元する脱窒処理方法であって、
前記脱窒部として、第1脱窒部と第2脱窒部とを設置し、
前記第2脱窒部内の反応液の一部を前記第1脱窒部に供給した上で、
前記第2脱窒部内での被処理水の水理学的滞留時間における前記第1脱窒部内での水素供与体の濃度と、前記第2脱窒部内での被処理水の水理学的滞留時間における前記第2脱窒部内での水素供与体の濃度との差が、前記脱窒菌の自己造粒化を誘導する濃度差となるように、少なくとも前記第1脱窒部に水素供与体を供給し、前記第2脱窒部に返送することを特徴とする脱窒処理方法。 - 請求項1記載の脱窒処理方法であって、前記第2脱窒部内での被処理水の水理学的滞留時間における前記第1脱窒部内での水素供与体の最大濃度と、前記第2脱窒部内での被処理水の水理学的滞留時間における前記第2脱窒部内での水素供与体の最小濃度との差が50mgTOC/L以上であることを特徴とする脱窒処理方法。
- 請求項1記載の脱窒処理方法であって、前記第2脱窒部には、前記被処理水を供給し、前記第1脱窒部には、水素供与体を供給するとともに、硝酸イオン、亜硝酸イオンを含む水を供給することを特徴とする脱窒処理方法。
- 請求項3記載の脱窒処理方法であって、前記硝酸イオン、亜硝酸イオンを含む水は、前記第2脱窒部に供給される被処理水を分岐したものであることを特徴とする脱窒処理方法。
- 請求項2記載の脱窒処理方法であって、前記第1脱窒部への水素供与体の供給は間欠的であることを特徴とする脱窒処理方法。
- 請求項2記載の脱窒処理方法であって、前記第1脱窒部への水素供与体の供給は、硝酸イオン、亜硝酸イオンの濃度に対して、脱窒処理に必要な水素供与体の供給量を基準とし、前記基準値より少ない量の水素供与体を供給する第1供給工程と、前記基準値より多い量の水素供与体を供給する第2供給工程とを組み合わせることにより行われることを特徴とする脱窒処理方法。
- 完全混合型の脱窒部と、前記脱窒部に被処理水を連続供給する被処理水供給手段と、前記脱窒部に水素供与体を供給する水素供与体供給手段と、を有し、前記脱窒部内で被処理水中に含まれる硝酸イオン、亜硝酸イオンを脱窒菌により窒素に還元する脱窒処理装置であって、
前記脱窒部は、第1脱窒部と第2脱窒部とを有し、
前記第2脱窒部内の反応液の一部を前記第1脱窒部に供給する反応液供給手段と、前記第1脱窒部内の反応液を前記第2脱窒部に返送する反応液返送手段とを有し、
前記反応液供給手段により前記第2脱窒部内の反応液の一部を前記第1脱窒部に供給した上で、
前記第2脱窒部内での被処理水の水理学的滞留時間における前記第1脱窒部内での水素供与体の濃度と、前記第2脱窒部内での被処理水の水理学的滞留時間における前記第2脱窒部内での水素供与体の濃度との差が、前記脱窒菌の自己造粒化を誘導する濃度差となるように、前記水素供与体供給手段により少なくとも前記第1脱窒部に水素供与体を供給し、前記反応液返送手段により第1脱窒部内の反応液を前記第2脱窒部に返送することを特徴とする脱窒処理装置。
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JP2008208709A JP5149736B2 (ja) | 2008-08-13 | 2008-08-13 | 脱窒処理方法及び脱窒処理装置 |
CN200910151475XA CN101633532B (zh) | 2008-07-25 | 2009-07-23 | 脱氮处理方法以及脱氮处理装置 |
TW098125090A TWI449676B (zh) | 2008-07-25 | 2009-07-24 | A denitrification treatment method and a denitrification treatment apparatus |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4768886B1 (ja) * | 2011-03-02 | 2011-09-07 | 株式会社加藤建設 | 水中の窒素除去方法 |
JP2011183247A (ja) * | 2010-03-04 | 2011-09-22 | Kobelco Eco-Solutions Co Ltd | 水処理装置及び水処理方法 |
WO2012055101A1 (en) * | 2010-10-27 | 2012-05-03 | Peking University | Treatment system and method for treating waste product |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5645797A (en) * | 1979-09-20 | 1981-04-25 | Ebara Infilco Co Ltd | Biological denitrification of waste water |
JPS5980399A (ja) * | 1982-10-27 | 1984-05-09 | Hitachi Ltd | 生物学的脱窒素処理装置の制御装置 |
JP2002177986A (ja) * | 2000-12-08 | 2002-06-25 | Kurita Water Ind Ltd | 生物学的脱窒装置 |
-
2008
- 2008-08-13 JP JP2008208709A patent/JP5149736B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5645797A (en) * | 1979-09-20 | 1981-04-25 | Ebara Infilco Co Ltd | Biological denitrification of waste water |
JPS5980399A (ja) * | 1982-10-27 | 1984-05-09 | Hitachi Ltd | 生物学的脱窒素処理装置の制御装置 |
JP2002177986A (ja) * | 2000-12-08 | 2002-06-25 | Kurita Water Ind Ltd | 生物学的脱窒装置 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011183247A (ja) * | 2010-03-04 | 2011-09-22 | Kobelco Eco-Solutions Co Ltd | 水処理装置及び水処理方法 |
WO2012055101A1 (en) * | 2010-10-27 | 2012-05-03 | Peking University | Treatment system and method for treating waste product |
US9278876B2 (en) | 2010-10-27 | 2016-03-08 | Peking University | Treatment of waste product |
JP4768886B1 (ja) * | 2011-03-02 | 2011-09-07 | 株式会社加藤建設 | 水中の窒素除去方法 |
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