JPS61161197A - 有機性排水の処理方法 - Google Patents
有機性排水の処理方法Info
- Publication number
- JPS61161197A JPS61161197A JP60002071A JP207185A JPS61161197A JP S61161197 A JPS61161197 A JP S61161197A JP 60002071 A JP60002071 A JP 60002071A JP 207185 A JP207185 A JP 207185A JP S61161197 A JPS61161197 A JP S61161197A
- Authority
- JP
- Japan
- Prior art keywords
- added
- ferric
- separated
- sludge
- flocculant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000011282 treatment Methods 0.000 title description 28
- 239000010815 organic waste Substances 0.000 title 1
- 239000002351 wastewater Substances 0.000 claims abstract description 52
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 239000002253 acid Substances 0.000 claims abstract description 23
- 229960004887 ferric hydroxide Drugs 0.000 claims abstract description 22
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 claims abstract description 22
- 150000002505 iron Chemical class 0.000 claims abstract description 16
- 150000003839 salts Chemical class 0.000 claims abstract description 14
- 239000003054 catalyst Substances 0.000 claims abstract description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 11
- 239000011707 mineral Substances 0.000 claims abstract description 11
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 54
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 40
- 239000000126 substance Substances 0.000 claims description 33
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- 239000003513 alkali Substances 0.000 claims description 15
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 13
- 239000000920 calcium hydroxide Substances 0.000 claims description 13
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 13
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 13
- 235000010755 mineral Nutrition 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 2
- 231100000719 pollutant Toxicity 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 21
- 239000010802 sludge Substances 0.000 abstract description 19
- 230000003647 oxidation Effects 0.000 abstract description 12
- 239000007800 oxidant agent Substances 0.000 abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 239000000356 contaminant Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 21
- 238000000926 separation method Methods 0.000 description 18
- 239000002699 waste material Substances 0.000 description 17
- 230000008569 process Effects 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 15
- 239000005416 organic matter Substances 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 239000002244 precipitate Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 230000008929 regeneration Effects 0.000 description 7
- 238000011069 regeneration method Methods 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 6
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical group [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 6
- 238000005273 aeration Methods 0.000 description 5
- 238000004090 dissolution Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- -1 Fe(II) ions Chemical class 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000010800 human waste Substances 0.000 description 4
- 235000014413 iron hydroxide Nutrition 0.000 description 4
- 230000004060 metabolic process Effects 0.000 description 4
- 238000006386 neutralization reaction Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000010979 pH adjustment Methods 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- 239000000701 coagulant Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 238000012851 eutrophication Methods 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical class [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 3
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 3
- 229920000620 organic polymer Polymers 0.000 description 3
- 239000012476 oxidizable substance Substances 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 235000000346 sugar Nutrition 0.000 description 3
- 150000008163 sugars Chemical class 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 150000001413 amino acids Chemical class 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 238000011978 dissolution method Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 239000011790 ferrous sulphate Substances 0.000 description 2
- 235000003891 ferrous sulphate Nutrition 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 239000002509 fulvic acid Substances 0.000 description 2
- 239000004021 humic acid Substances 0.000 description 2
- 159000000014 iron salts Chemical class 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000003002 pH adjusting agent Substances 0.000 description 2
- 230000002085 persistent effect Effects 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Inorganic materials [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- PUKLDDOGISCFCP-JSQCKWNTSA-N 21-Deoxycortisone Chemical compound C1CC2=CC(=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@@](C(=O)C)(O)[C@@]1(C)CC2=O PUKLDDOGISCFCP-JSQCKWNTSA-N 0.000 description 1
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- FCYKAQOGGFGCMD-UHFFFAOYSA-N Fulvic acid Natural products O1C2=CC(O)=C(O)C(C(O)=O)=C2C(=O)C2=C1CC(C)(O)OC2 FCYKAQOGGFGCMD-UHFFFAOYSA-N 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 102000003886 Glycoproteins Human genes 0.000 description 1
- 108090000288 Glycoproteins Proteins 0.000 description 1
- 229920002683 Glycosaminoglycan Polymers 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 101100009643 Papaver somniferum CODM gene Proteins 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 101710104624 Proline/betaine transporter Proteins 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- ISMSDURUTAMCEA-UHFFFAOYSA-N [N].OP(O)(O)=O Chemical compound [N].OP(O)(O)=O ISMSDURUTAMCEA-UHFFFAOYSA-N 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 235000001014 amino acid Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003809 bile pigment Substances 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- 229940095100 fulvic acid Drugs 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000000968 intestinal effect Effects 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical class Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- 229910000358 iron sulfate Inorganic materials 0.000 description 1
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60002071A JPS61161197A (ja) | 1985-01-11 | 1985-01-11 | 有機性排水の処理方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60002071A JPS61161197A (ja) | 1985-01-11 | 1985-01-11 | 有機性排水の処理方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61161197A true JPS61161197A (ja) | 1986-07-21 |
| JPH0585240B2 JPH0585240B2 (enrdf_load_stackoverflow) | 1993-12-06 |
Family
ID=11519110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60002071A Granted JPS61161197A (ja) | 1985-01-11 | 1985-01-11 | 有機性排水の処理方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61161197A (enrdf_load_stackoverflow) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2208164A (en) * | 1987-06-25 | 1989-03-08 | Laporte Industries Ltd | Purification of waters |
| EP0723938A3 (en) * | 1995-01-25 | 1998-06-17 | Air Products And Chemicals, Inc. | Method for treating water |
| EP0723937A3 (en) * | 1995-01-25 | 1998-06-17 | Air Products And Chemicals, Inc. | Method for treating industrial effluent |
| JP2007252969A (ja) * | 2006-03-20 | 2007-10-04 | Nippon Steel Corp | 鉄鋼製造排水の浄化処理方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5942099A (ja) * | 1982-09-03 | 1984-03-08 | Hitachi Plant Eng & Constr Co Ltd | 生物難分解性物質を含む廃水の処理方法 |
| JPS5959299A (ja) * | 1982-09-27 | 1984-04-05 | Kankyo Eng Kk | 糖蜜廃液の処理方法 |
-
1985
- 1985-01-11 JP JP60002071A patent/JPS61161197A/ja active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5942099A (ja) * | 1982-09-03 | 1984-03-08 | Hitachi Plant Eng & Constr Co Ltd | 生物難分解性物質を含む廃水の処理方法 |
| JPS5959299A (ja) * | 1982-09-27 | 1984-04-05 | Kankyo Eng Kk | 糖蜜廃液の処理方法 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2208164A (en) * | 1987-06-25 | 1989-03-08 | Laporte Industries Ltd | Purification of waters |
| GB2208164B (en) * | 1987-06-25 | 1991-04-24 | Laporte Industries Ltd | Purification of water using a flocculating agent |
| EP0723938A3 (en) * | 1995-01-25 | 1998-06-17 | Air Products And Chemicals, Inc. | Method for treating water |
| EP0723937A3 (en) * | 1995-01-25 | 1998-06-17 | Air Products And Chemicals, Inc. | Method for treating industrial effluent |
| JP2007252969A (ja) * | 2006-03-20 | 2007-10-04 | Nippon Steel Corp | 鉄鋼製造排水の浄化処理方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0585240B2 (enrdf_load_stackoverflow) | 1993-12-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |