JP7177220B2 - 同時に、高濃度のアンモニア態窒素と、有機構成物を含む廃水の処理方法 - Google Patents
同時に、高濃度のアンモニア態窒素と、有機構成物を含む廃水の処理方法 Download PDFInfo
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- JP7177220B2 JP7177220B2 JP2021106191A JP2021106191A JP7177220B2 JP 7177220 B2 JP7177220 B2 JP 7177220B2 JP 2021106191 A JP2021106191 A JP 2021106191A JP 2021106191 A JP2021106191 A JP 2021106191A JP 7177220 B2 JP7177220 B2 JP 7177220B2
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- ammonia nitrogen
- organic
- nitrogen
- wastewater
- wastewater containing
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- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims description 41
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- 150000003254 radicals Chemical class 0.000 claims description 33
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- 238000000354 decomposition reaction Methods 0.000 claims description 30
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- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 25
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 claims description 24
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- 229940044175 cobalt sulfate Drugs 0.000 description 4
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 4
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
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- 229910052979 sodium sulfide Inorganic materials 0.000 description 3
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 3
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- 150000003839 salts Chemical class 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- FLXFOOZNPFNHSN-UHFFFAOYSA-N sodium 2H-thiophen-2-ide Chemical compound [Na+].C=1C=[C-]SC=1 FLXFOOZNPFNHSN-UHFFFAOYSA-N 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/365—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds from petrochemical industry (e.g. refineries)
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- C02F2209/02—Temperature
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Description
曝気参与の反応の促進は、
遷移金属参与の反応の促進は、
同時に、UV照射参与の反応の促進は、
その中、R・が、有機物分解によって、派生される中間遊離基の種類であって、ROO・がR・によって派生されるスーパーオキシドラジカルである。
20 触媒反応槽
21 第一上方供給ホッパ
22 第二上方供給ホッパ
23 曝気装置
24 曝気端
25 インターナルサイクルポンプ
26 熱交換器
27 排気口
28 底部出口ポンプ
30 中和調整槽
31 第三上方供給ホッパ
32 第四上方供給ホッパ
33 インターナルサイクルポンプ
34 熱交換器
35 排気口
36 底部排出口
40 UV照射装置
S10~S13 ステップ
S20~S23 ステップ
ステップS30~S34
Claims (10)
- アンモニア態窒素と有機構成物を含む廃水の処理方法であって、
オキシダントが、過硫酸塩、パーオキシモノ硫酸塩(peroxymonosulfate, PMS)、および、その混合物からなる群から選択され、前記オキシダント(Ox)/(化学的酸素要求量(COD)+アンモニア態窒素)の割合(mg/L)が、0.1~30の範囲内になるように、前記オキシダントと、アンモニア態窒素と有機構成物を含む廃水である有機アンモニア態窒素廃水と、を曝気装置を有する触媒反応槽に入れ込んで、均一に混合するステップ一と、
前記有機アンモニア態窒素廃水に溶けたオキシダントに対して、紫外線(UV)を照射し、遷移金属(Mn+)である二価のコバルト(Co(II))を触媒とし、エアーか酸素を供給して曝気させることにより、前記オキシダントが光を受けて活性化されるとともに遷移金属によって触媒されて、遊離基が形成され、同時に、それにより、水中のアンモニア態窒素と有機汚染物の構成を衝撃するから、化学構造が、破壊されて酸化劣化され、このとき、前記遷移金属触媒と前記オキシダントの割合(mg/L)が、0.00001~0.003の範囲内にあり、また、前記遊離基には、遊離基SO4 -・、遊離基HO・、および、スーパーオキシドラジカルROO・の活性遊離基種類が含まれる、ステップ二と、
生成された遊離基で、水中のアンモニア態窒素と有機汚染物構成に対して、酸化を触媒させて、分解させ、また、処理された溶液を中和調整槽へ導入し、その後の生物処理ユニットに合わせて、実用に応じてその処理済みの溶液のpH値を調整するか、放流水の標準に満たして直接に放流できるように、その処理済みの溶液のpH値を調整する、ステップ三と、が含まれる、
ことを特徴とするアンモニア態窒素と有機構成物を含む廃水の処理方法。 - 請求項1に記載のアンモニア態窒素と有機構成物を含む廃水の処理方法において、
前記有機アンモニア態窒素廃水のアンモニア態窒素濃度は、最も高いのが、4500mg/Lであり、また、同時に分解可能の有機構成物濃度のCODは、最も高いのが、7500mg/Lである
ことを特徴とするアンモニア態窒素と有機構成物を含む廃水の処理方法。 - 請求項1に記載のアンモニア態窒素と有機構成物を含む廃水の処理方法において、
前記有機アンモニア態窒素廃水のアンモニア態窒素濃度は、500~3000mg/Lの範囲内にあり、また、同時に分解可能の有機構成物濃度のCODは、500~6000mg/Lの範囲内にある
ことを特徴とするアンモニア態窒素と有機構成物を含む廃水の処理方法。 - 請求項1に記載のアンモニア態窒素と有機構成物を含む廃水の処理方法において、
前記有機アンモニア態窒素廃水の汚染源は、主として、石油化学廃水や石油精練廃水の工業廃水であり、
前記有機アンモニア態窒素廃水の標的汚染物は、アンモニア態窒素構成と有機物構成であり、
前記有機構成物に、揮発性有機物や不揮発性有機物、ハロゲン含有有機物、非ハロゲン含有有機物、多環芳香族炭化水素、脂肪族炭化水素、複素環炭化水素、石油系炭化水素、有機溶剤及び、重合体が含まれる
ことを特徴とするアンモニア態窒素と有機構成物を含む廃水の処理方法。 - 請求項1に記載のアンモニア態窒素と有機構成物を含む廃水の処理方法において、
前記有機アンモニア態窒素廃水の汚染源は、主として、工業廃水や生活汚水或いは、土壌地下水が含まれる
ことを特徴とするアンモニア態窒素と有機構成物を含む廃水の処理方法。 - 請求項1に記載のアンモニア態窒素と有機構成物を含む廃水の処理方法において、
前記過硫酸塩には、過硫酸ソーダ(Na2S2O8 )および過硫酸カリウム(K2S2O8)のうちの少なくとも一つが含まれ、
前記パーオキシモノ硫酸塩には、モノ過硫酸水素カリウム(2KHSO5・KHSO4・K2SO4)が含まれる
ことを特徴とするアンモニア態窒素と有機構成物を含む廃水の処理方法。 - 請求項1に記載のアンモニア態窒素と有機構成物を含む廃水の処理方法において、
前記ステップ一の前記オキシダント(Ox)/(COD+アンモニア態窒素)の割合(mg/L)は、3.5~16の範囲内にある
ことを特徴とするアンモニア態窒素と有機構成物を含む廃水の処理方法。 - 請求項1に記載のアンモニア態窒素と有機構成物を含む廃水の処理方法において、
前記ステップ二の遷移金属触媒は、二価のコバルト(Co(II))を含む化合物或いはその混合物であり、ただし、硝酸塩と塩化物を含めない
ことを特徴とするアンモニア態窒素と有機構成物を含む廃水の処理方法。 - 請求項1に記載のアンモニア態窒素と有機構成物を含む廃水の処理方法において、
前記ステップ二の遷移金属触媒のCo(II)と当該オキシダントの割合(mg/L)は、0.0001~0.002の範囲内にある
ことを特徴とするアンモニア態窒素と有機構成物を含む廃水の処理方法。
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