JP5297304B2 - 廃水処理方法 - Google Patents
廃水処理方法 Download PDFInfo
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- JP5297304B2 JP5297304B2 JP2009196555A JP2009196555A JP5297304B2 JP 5297304 B2 JP5297304 B2 JP 5297304B2 JP 2009196555 A JP2009196555 A JP 2009196555A JP 2009196555 A JP2009196555 A JP 2009196555A JP 5297304 B2 JP5297304 B2 JP 5297304B2
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- 238000004065 wastewater treatment Methods 0.000 title claims description 12
- 239000010802 sludge Substances 0.000 claims description 94
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 56
- 229910001868 water Inorganic materials 0.000 claims description 56
- 238000000034 method Methods 0.000 claims description 55
- 238000005273 aeration Methods 0.000 claims description 45
- 239000002351 wastewater Substances 0.000 claims description 37
- 239000006228 supernatant Substances 0.000 claims description 30
- 230000008569 process Effects 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
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- 239000000126 substance Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 50
- 230000029087 digestion Effects 0.000 description 32
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 28
- 229910052698 phosphorus Inorganic materials 0.000 description 28
- 239000011574 phosphorus Substances 0.000 description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 27
- 238000001704 evaporation Methods 0.000 description 20
- 230000008020 evaporation Effects 0.000 description 17
- 229910052757 nitrogen Inorganic materials 0.000 description 13
- 241000894006 Bacteria Species 0.000 description 12
- 244000005700 microbiome Species 0.000 description 12
- 230000029058 respiratory gaseous exchange Effects 0.000 description 12
- 229910002651 NO3 Inorganic materials 0.000 description 10
- 239000005416 organic matter Substances 0.000 description 10
- 238000004062 sedimentation Methods 0.000 description 8
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 7
- 229910017604 nitric acid Inorganic materials 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 230000000813 microbial effect Effects 0.000 description 6
- 239000012528 membrane Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 4
- -1 nitrite ions Chemical class 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000012733 comparative method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 241001148470 aerobic bacillus Species 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000001546 nitrifying effect Effects 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004069 wastewater sedimentation Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 239000005997 Calcium carbide Substances 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- 108091028043 Nucleic acid sequence Proteins 0.000 description 1
- 238000012300 Sequence Analysis Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
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- 238000012258 culturing Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 230000002538 fungal effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000007269 microbial metabolism Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
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- 230000002250 progressing effect Effects 0.000 description 1
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- 150000003839 salts Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
Description
前記再曝気処理工程の上澄水の強熱残留物濃度を、前記流入廃水よりも高濃度に維持し、
前記低曝気処理工程のアルカリ度を40mg/L〜150mg/Lに維持することを特徴とする。
容量約50〜200mLの蒸発皿に適量(蒸発残留物が5mg以上となるように、一般には50mL〜100mL)の試料をとり、水浴上で蒸発乾固する。ほとんど乾燥してから105℃〜110℃の乾燥器に入れ、約2時間加熱乾燥し、デシケーターに入れ放冷したのち、質量をはかる。蒸発皿の前後の質量の差(αmg)を求め、次式により蒸発残留物濃度(mg/L)を算出する。
蒸発残留物(mg/L)=α×(1000/試料mL)
前述で蒸発残留物を定量した蒸発皿を蓋で覆い、電気炉に入れ600プラス/マイナス25℃で30〜40分間強熱し、デシケーター中で放冷したのち、質量をはかる。この質量と蒸発皿の質量の差(αmg)を求め、次式によって強熱残留物濃度(mg/L)を算出する。
強熱残留物(mg/L)=α×(1000/試料mL)
試料100mLをビーカー200mLにとり、pH計を用いるか、MR混合指示薬数滴を加え(青色を呈したらアルカリ度があることを示す)、マグネチックスターラーでゆっくり攪拌しながら、0.1mol/L塩酸を用いて、pHが4.8に達するか、又は試料が灰紫色を呈するまで滴定する。これに要した0.1mol/L塩酸のml数(α)を求め、次式によってアルカリ度を算出する。
アルカリ度〔pH4.8〕(mgCaCO3/L)=α×F×(1000/試料mL)×5
F:0.1mol/L塩酸のファクター
(2)実験期間:No.1,2は2ヶ月間、No.3,4は8ヶ月間、各測定値はその期間の平均値である。
2は沈殿槽
3は汚泥消化槽
10は廃水沈殿貯留槽
12はスクリーン槽
13は計量槽
14は反応槽
15は沈殿槽
20は汚泥消化槽
Claims (2)
- 有機物を含む流入廃水をDO(溶存酸素量)1mg/L以下で低曝気処理する工程と、該低曝気処理の処理水を汚泥分離処理する工程と、該汚泥分離処理した汚泥をDO0〜3mg/Lで再曝気処理する工程を有し、該再曝気処理工程で得られた上澄水を前記流入廃水に混入する廃水処理方法において、
前記再曝気処理工程の上澄水の強熱残留物濃度を、前記流入廃水よりも高濃度に維持し、
前記低曝気処理工程のアルカリ度を40mg/L〜150mg/Lに維持することを特徴とする廃水処理方法。 - 前記再曝気処理工程の上澄水の強熱残留物濃度が300mg/L以上であることを特徴とする請求項1に記載の廃水処理方法。
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JP2009196555A JP5297304B2 (ja) | 2009-08-27 | 2009-08-27 | 廃水処理方法 |
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JP2009196555A JP5297304B2 (ja) | 2009-08-27 | 2009-08-27 | 廃水処理方法 |
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JP2011045837A JP2011045837A (ja) | 2011-03-10 |
JP5297304B2 true JP5297304B2 (ja) | 2013-09-25 |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5783399B2 (ja) * | 2010-08-16 | 2015-09-24 | 多美子 定家 | 液肥の製造方法 |
CN115959789A (zh) * | 2021-10-12 | 2023-04-14 | 南乙环境工程技术(上海)有限公司 | 一种高浓度氨氮废水与氮氧化物协同治理的方法及系统 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3667254B2 (ja) * | 2001-06-11 | 2005-07-06 | 株式会社若尾電気 | 廃水処理方法及び廃水処理装置 |
JP2004188281A (ja) * | 2002-12-10 | 2004-07-08 | Hoomaa Clean Kk | 廃水処理方法及び廃水処理装置 |
JP4446104B2 (ja) * | 2007-10-25 | 2010-04-07 | 株式会社若尾電気 | 廃水処理システム |
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