DE69212289T2 - Metallsulfate als Flockungsmittel für die Abwasserreinigung und ihre Herstellung - Google Patents
Metallsulfate als Flockungsmittel für die Abwasserreinigung und ihre HerstellungInfo
- Publication number
- DE69212289T2 DE69212289T2 DE69212289T DE69212289T DE69212289T2 DE 69212289 T2 DE69212289 T2 DE 69212289T2 DE 69212289 T DE69212289 T DE 69212289T DE 69212289 T DE69212289 T DE 69212289T DE 69212289 T2 DE69212289 T2 DE 69212289T2
- Authority
- DE
- Germany
- Prior art keywords
- waste water
- ions
- water
- sulfates
- aqueous solution
- 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.)
- Expired - Fee Related
Links
- 150000003467 sulfuric acid derivatives Chemical class 0.000 title claims description 14
- 239000008394 flocculating agent Substances 0.000 title claims description 13
- 238000004065 wastewater treatment Methods 0.000 title claims description 11
- 229910052751 metal Inorganic materials 0.000 title claims description 10
- 239000002184 metal Substances 0.000 title claims description 10
- 238000004519 manufacturing process Methods 0.000 title description 6
- 239000002351 wastewater Substances 0.000 claims description 45
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 239000007864 aqueous solution Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 150000003839 salts Chemical class 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- -1 iron ions Chemical class 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- 150000002739 metals Chemical class 0.000 claims description 5
- 239000011591 potassium Substances 0.000 claims description 5
- 229910052700 potassium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical group [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 2
- 229910001424 calcium ion Inorganic materials 0.000 claims description 2
- 239000010840 domestic wastewater Substances 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 239000010842 industrial wastewater Substances 0.000 claims description 2
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 2
- 229910001414 potassium ion Inorganic materials 0.000 claims description 2
- 239000013049 sediment Substances 0.000 claims description 2
- 229910001415 sodium ion Inorganic materials 0.000 claims description 2
- 239000008239 natural water Substances 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 41
- 239000008395 clarifying agent Substances 0.000 description 31
- 241000588724 Escherichia coli Species 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 12
- 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 11
- 239000012629 purifying agent Substances 0.000 description 9
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 8
- 238000003287 bathing Methods 0.000 description 7
- OSVXSBDYLRYLIG-UHFFFAOYSA-N chlorine dioxide Inorganic materials O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 7
- 239000004155 Chlorine dioxide Substances 0.000 description 6
- 235000019398 chlorine dioxide Nutrition 0.000 description 6
- 238000005189 flocculation Methods 0.000 description 6
- 230000016615 flocculation Effects 0.000 description 6
- 235000013305 food Nutrition 0.000 description 6
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 5
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 5
- 241000251468 Actinopterygii Species 0.000 description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 4
- 150000001805 chlorine compounds Chemical class 0.000 description 4
- 235000019688 fish Nutrition 0.000 description 4
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 4
- 235000019341 magnesium sulphate Nutrition 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000003643 water by type Substances 0.000 description 4
- 244000294411 Mirabilis expansa Species 0.000 description 3
- 150000001450 anions Chemical class 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 235000003891 ferrous sulphate Nutrition 0.000 description 3
- 239000011790 ferrous sulphate Substances 0.000 description 3
- 239000012286 potassium permanganate Substances 0.000 description 3
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 3
- 229910052939 potassium sulfate Inorganic materials 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- 235000015429 Mirabilis expansa Nutrition 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 2
- 235000011128 aluminium sulphate Nutrition 0.000 description 2
- 238000005352 clarification Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 235000013373 food additive Nutrition 0.000 description 2
- 239000002778 food additive Substances 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 235000013536 miso Nutrition 0.000 description 2
- 235000019645 odor Nutrition 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-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
- 208000012657 Atopic disease Diseases 0.000 description 1
- 241000972773 Aulopiformes Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241001609213 Carassius carassius Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000192700 Cyanobacteria Species 0.000 description 1
- 241000252233 Cyprinus carpio Species 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 230000000843 anti-fungal effect Effects 0.000 description 1
- UMEAURNTRYCPNR-UHFFFAOYSA-N azane;iron(2+) Chemical compound N.[Fe+2] UMEAURNTRYCPNR-UHFFFAOYSA-N 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 235000013527 bean curd Nutrition 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000382 dechlorinating effect Effects 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 description 1
- 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 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 235000019515 salmon Nutrition 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229940125723 sedative agent Drugs 0.000 description 1
- 239000000932 sedative agent Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/68—Aluminium compounds containing sulfur
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/009—Compounds containing iron, with or without oxygen or hydrogen, and containing two or more other elements
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Geology (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3351057A JPH05161803A (ja) | 1991-12-11 | 1991-12-11 | 廃水浄化処理剤及びその製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69212289D1 DE69212289D1 (de) | 1996-08-22 |
| DE69212289T2 true DE69212289T2 (de) | 1997-02-20 |
Family
ID=18414752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69212289T Expired - Fee Related DE69212289T2 (de) | 1991-12-11 | 1992-12-11 | Metallsulfate als Flockungsmittel für die Abwasserreinigung und ihre Herstellung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5346643A (enExample) |
| EP (1) | EP0546850B1 (enExample) |
| JP (1) | JPH05161803A (enExample) |
| DE (1) | DE69212289T2 (enExample) |
| TW (1) | TW255878B (enExample) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2705661B1 (fr) * | 1993-05-24 | 1995-08-25 | Rhone Poulenc Chimie | Composition à base de polychlorure d'aluminium et de sel de fer son mode de préparation et son utilisation dans le traitement des eaux. |
| US5500131A (en) * | 1994-04-05 | 1996-03-19 | Metz; Jean-Paul | Compositions and methods for water treatment |
| AUPN859096A0 (en) * | 1996-03-11 | 1996-04-04 | Archer, Walter James | Ballast water de-toxification treatment system for ships |
| US6045852A (en) * | 1997-12-16 | 2000-04-04 | Charvid Limited Liability Co. | Composition for clarifying beverage solutions used to prepare fermented beverages |
| US6221489B1 (en) | 1998-11-19 | 2001-04-24 | Showa Denko Kabushiki Kaisha | Carbonaceous fiber acute-angled at both ends and production process therefor |
| AU3601100A (en) * | 1999-02-25 | 2000-09-14 | Minox Corporation Usa | Mineral oxide liquid concentrates for water and wastewater treatment |
| JP4213386B2 (ja) * | 2000-05-31 | 2009-01-21 | 河野 市蔵 | 無機電解凝集剤及び該無機電解凝集剤を使用した泥土改質方法 |
| FI20055615A7 (fi) * | 2005-11-18 | 2007-05-19 | Kemira Oyj | Menetelmä aineiden poistamiseksi vesiliuoksesta |
| CN103449583A (zh) * | 2013-08-22 | 2013-12-18 | 苏州康华净化系统工程有限公司 | 水质净化剂 |
| CN104192924B (zh) * | 2014-09-19 | 2016-06-15 | 山东省东平县华东纸业有限责任公司 | 一种造纸污水处理剂 |
| CN104192923B (zh) * | 2014-09-19 | 2016-06-29 | 江西晨鸣纸业有限责任公司 | 一种造纸污水处理剂 |
| CN104192965B (zh) * | 2014-09-19 | 2016-05-25 | 冯进器 | 一种造纸污水处理剂 |
| CN104192922B (zh) * | 2014-09-19 | 2016-05-04 | 冯进器 | 一种造纸污水处理剂 |
| JP6464716B2 (ja) * | 2014-12-16 | 2019-02-06 | 王子ホールディングス株式会社 | 大腸菌群含有排水の処理方法及び大腸菌群含有排水の処理装置 |
| CN110817987A (zh) * | 2019-11-22 | 2020-02-21 | 湖南金益环保股份有限公司 | 一种绿色环境建设用污水处理净化剂 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1615970A (en) * | 1924-05-10 | 1927-02-01 | Richard F Grant | Method of and means for recovering and regenerating leaching solutions |
| US2440215A (en) * | 1946-03-21 | 1948-04-20 | Chemical Construction Corp | Treatment of iron sulfate liquors |
| US3630943A (en) * | 1969-08-14 | 1971-12-28 | Us Interior | Preparation of absorbents for sulfur oxide removal |
| US3887479A (en) * | 1973-10-30 | 1975-06-03 | Us Navy | Process for preparation of ferrites |
| US3994819A (en) * | 1974-09-13 | 1976-11-30 | Agence Nationale De Valorisation De La Recherche (Anvar) | Method for the preparation of acicular particles containing iron and other divalent metals |
| DE2710969C3 (de) * | 1977-03-12 | 1987-06-19 | Kronus Titan-GmbH, 5090 Leverkusen | Verfahren zur Herstellung einer wässerigen Eisen(III)-chlorid-sulfatlösung |
| DE2843053A1 (de) * | 1978-10-03 | 1980-04-24 | Bayer Ag | Faellmittel zur entphosphatisierung von abwasser und verfahren zu dessen herstellung |
| DE3004825A1 (de) * | 1980-02-09 | 1981-08-20 | Bayer Ag, 5090 Leverkusen | Faellmittel, verfahren zu dessen herstellung und dessen verwendung zur entphosphatisierung von abwasser |
| EP0056068B1 (de) * | 1981-01-14 | 1985-07-17 | Henkel Kommanditgesellschaft auf Aktien | Verfahren zur Behandlung von Abwässern |
| SE437016B (sv) * | 1981-03-23 | 1985-02-04 | Boliden Ab | Aluminiumsulfatkomposition for vattenrening, papperslimning och vextavvattning, samt forfarande for dess framstellning |
| US4440713A (en) * | 1982-09-30 | 1984-04-03 | International Business Machines Corp. | Process for making fine magnetic ferrite powder and dense ferrite blocks |
| US4566986A (en) * | 1984-08-31 | 1986-01-28 | Waldmann John J | Flocculating agents and processes for making them |
| US4707349A (en) * | 1986-02-28 | 1987-11-17 | Hjersted Norman B | Process of preparing a preferred ferric sulfate solution, and product |
| SE455943B (sv) * | 1986-05-27 | 1988-08-22 | Boliden Ab | Flerkernigt basiskt me?723?72+-hydroxisulfatkomplex i fast form samt forfarande for dess framstellning |
-
1991
- 1991-12-11 JP JP3351057A patent/JPH05161803A/ja active Pending
-
1992
- 1992-12-09 US US07/987,811 patent/US5346643A/en not_active Expired - Fee Related
- 1992-12-11 EP EP92311334A patent/EP0546850B1/en not_active Expired - Lifetime
- 1992-12-11 DE DE69212289T patent/DE69212289T2/de not_active Expired - Fee Related
- 1992-12-11 TW TW081109946A patent/TW255878B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| DE69212289D1 (de) | 1996-08-22 |
| US5346643A (en) | 1994-09-13 |
| EP0546850A1 (en) | 1993-06-16 |
| JPH05161803A (ja) | 1993-06-29 |
| EP0546850B1 (en) | 1996-07-17 |
| TW255878B (enExample) | 1995-09-01 |
Similar Documents
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