DE3838864A1 - Verfahren zur ausfaellung und flockung von geloesten wasser- und abwasserinhaltsstoffen sowie schwebstoffen bei der wasseraufbereitung - Google Patents
Verfahren zur ausfaellung und flockung von geloesten wasser- und abwasserinhaltsstoffen sowie schwebstoffen bei der wasseraufbereitungInfo
- Publication number
- DE3838864A1 DE3838864A1 DE3838864A DE3838864A DE3838864A1 DE 3838864 A1 DE3838864 A1 DE 3838864A1 DE 3838864 A DE3838864 A DE 3838864A DE 3838864 A DE3838864 A DE 3838864A DE 3838864 A1 DE3838864 A1 DE 3838864A1
- Authority
- DE
- Germany
- Prior art keywords
- water
- nitrate
- oxygen
- iron
- wastewater
- 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 46
- 239000002351 wastewater Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000008569 process Effects 0.000 title claims abstract description 19
- 239000000470 constituent Substances 0.000 title claims abstract description 7
- 230000001376 precipitating effect Effects 0.000 title abstract description 4
- 230000003311 flocculating effect Effects 0.000 title 1
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 36
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 27
- 150000001450 anions Chemical class 0.000 claims abstract description 10
- 238000005189 flocculation Methods 0.000 claims abstract description 9
- 230000016615 flocculation Effects 0.000 claims abstract description 9
- 239000003643 water by type Substances 0.000 claims abstract description 6
- 238000000746 purification Methods 0.000 claims abstract description 5
- 230000003750 conditioning effect Effects 0.000 claims abstract description 4
- 239000010842 industrial wastewater Substances 0.000 claims abstract description 4
- 239000010841 municipal wastewater Substances 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 77
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 27
- 239000001301 oxygen Substances 0.000 claims description 27
- 229910052760 oxygen Inorganic materials 0.000 claims description 27
- 229910052742 iron Inorganic materials 0.000 claims description 25
- 238000001556 precipitation Methods 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- -1 nitrate ions Chemical class 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 7
- 238000006396 nitration reaction Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 5
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 4
- 230000035622 drinking Effects 0.000 claims description 3
- 230000000813 microbial effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims description 2
- 230000004060 metabolic process Effects 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 241000446313 Lamella Species 0.000 claims 1
- 239000003651 drinking water Substances 0.000 abstract description 2
- 235000020188 drinking water Nutrition 0.000 abstract description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical class [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 abstract 1
- 159000000013 aluminium salts Chemical class 0.000 abstract 1
- 244000144992 flock Species 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 16
- 239000008394 flocculating agent Substances 0.000 description 14
- 238000002474 experimental method Methods 0.000 description 11
- 239000010865 sewage Substances 0.000 description 10
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000000855 fermentation Methods 0.000 description 7
- 230000004151 fermentation Effects 0.000 description 7
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 235000021317 phosphate Nutrition 0.000 description 6
- 239000010802 sludge Substances 0.000 description 6
- FZUJWWOKDIGOKH-UHFFFAOYSA-N sulfuric acid hydrochloride Chemical compound Cl.OS(O)(=O)=O FZUJWWOKDIGOKH-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- 230000002378 acidificating effect Effects 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 238000005276 aerator Methods 0.000 description 3
- 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 3
- 230000008901 benefit Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 2
- JLDSOYXADOWAKB-UHFFFAOYSA-N aluminium nitrate Chemical class [Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O JLDSOYXADOWAKB-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 229910052728 basic metal Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 229940046892 lead acetate Drugs 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 206010000060 Abdominal distension Diseases 0.000 description 1
- 241000590020 Achromobacter Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- RFSUNEUAIZKAJO-ARQDHWQXSA-N Fructose Chemical compound OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O RFSUNEUAIZKAJO-ARQDHWQXSA-N 0.000 description 1
- 229930091371 Fructose Natural products 0.000 description 1
- 239000005715 Fructose Substances 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229910021577 Iron(II) chloride Inorganic materials 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 241000192041 Micrococcus Species 0.000 description 1
- 241000589516 Pseudomonas Species 0.000 description 1
- 241001478896 Sphaerotilus natans Species 0.000 description 1
- 206010057362 Underdose Diseases 0.000 description 1
- 235000009754 Vitis X bourquina Nutrition 0.000 description 1
- 235000012333 Vitis X labruscana Nutrition 0.000 description 1
- 240000006365 Vitis vinifera Species 0.000 description 1
- 235000014787 Vitis vinifera Nutrition 0.000 description 1
- 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 description 1
- LSHFIWNMHGCYRS-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[OH4+2] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[OH4+2] LSHFIWNMHGCYRS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 208000024330 bloating Diseases 0.000 description 1
- 150000001722 carbon compounds Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000008821 health effect Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-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
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 238000009996 mechanical pre-treatment Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
-
- 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
- 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
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Analytical Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3838864A DE3838864A1 (de) | 1988-11-17 | 1988-11-17 | Verfahren zur ausfaellung und flockung von geloesten wasser- und abwasserinhaltsstoffen sowie schwebstoffen bei der wasseraufbereitung |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3838864A DE3838864A1 (de) | 1988-11-17 | 1988-11-17 | Verfahren zur ausfaellung und flockung von geloesten wasser- und abwasserinhaltsstoffen sowie schwebstoffen bei der wasseraufbereitung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3838864A1 true DE3838864A1 (de) | 1990-05-31 |
| DE3838864C2 DE3838864C2 (enrdf_load_stackoverflow) | 1991-12-05 |
Family
ID=6367324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3838864A Granted DE3838864A1 (de) | 1988-11-17 | 1988-11-17 | Verfahren zur ausfaellung und flockung von geloesten wasser- und abwasserinhaltsstoffen sowie schwebstoffen bei der wasseraufbereitung |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3838864A1 (enrdf_load_stackoverflow) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0497419A1 (en) * | 1991-01-31 | 1992-08-05 | CAFFARO S.p.A. Società per l'Industria Chimica ed Elettrochimica | Improved process for water purification |
| DE4309666A1 (de) * | 1993-03-25 | 1994-09-29 | Steag Ag | Verfahren und Fällungsmittel zur Abtrennung von organischen Verunreinigungen aus einem Abwasser |
| EP0646549A1 (en) * | 1993-10-01 | 1995-04-05 | CAFFARO S.p.A. Società per l'Industria Chimica ed Elettrochimica | Process for treating industrial wastewater with flocculants constituted by nitrates or basic nitrates of trivalent metals |
| WO1995009817A1 (en) * | 1993-10-01 | 1995-04-13 | Industrie Chimiche Caffaro S.P.A. | Process for making paper and cardboard |
| US6802979B2 (en) | 1999-12-03 | 2004-10-12 | Frank Panning | Composition and method for treating polluted waters and water sediments |
| DE102009055387A1 (de) * | 2009-12-29 | 2011-06-30 | Yara International Asa | Abwasserbehandlungsmittel mit oxidativer Wirkung und Verfahren zur Behandlung von Abwasser |
| DE10037018B4 (de) * | 2000-07-29 | 2015-03-12 | Heiko Hilbert | Anwendung von monomeren, dimeren und polymeren Aluminiumnitrat-Verbindungen zur Wasser-, Abwasser- und Prozessaufbereitung im industriellen Bereich, vornehmlich in der Papier- und Zellstoff-Industrie |
| CN113185024A (zh) * | 2021-04-25 | 2021-07-30 | 吉林梅基特环保科技有限公司 | 一种凝结水的净化方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE641793C (de) * | 1934-11-10 | 1937-02-13 | Hermann Jung Dr | Verfahren zur Kreislaufverwendung von Eisen bei der chemischen Reinigung von Abwasser durch Eisenverbindungen |
-
1988
- 1988-11-17 DE DE3838864A patent/DE3838864A1/de active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE641793C (de) * | 1934-11-10 | 1937-02-13 | Hermann Jung Dr | Verfahren zur Kreislaufverwendung von Eisen bei der chemischen Reinigung von Abwasser durch Eisenverbindungen |
Non-Patent Citations (1)
| Title |
|---|
| MUDRACK, K.: Die Anwendung der mikrobiellen Denitrifikation zur biologischen Reinigung von Industrieabwasser, gwf-wasser/abwasser 112, 1971, S. 33 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0497419A1 (en) * | 1991-01-31 | 1992-08-05 | CAFFARO S.p.A. Società per l'Industria Chimica ed Elettrochimica | Improved process for water purification |
| DE4309666A1 (de) * | 1993-03-25 | 1994-09-29 | Steag Ag | Verfahren und Fällungsmittel zur Abtrennung von organischen Verunreinigungen aus einem Abwasser |
| EP0646549A1 (en) * | 1993-10-01 | 1995-04-05 | CAFFARO S.p.A. Società per l'Industria Chimica ed Elettrochimica | Process for treating industrial wastewater with flocculants constituted by nitrates or basic nitrates of trivalent metals |
| WO1995009817A1 (en) * | 1993-10-01 | 1995-04-13 | Industrie Chimiche Caffaro S.P.A. | Process for making paper and cardboard |
| US5750006A (en) * | 1993-10-01 | 1998-05-12 | Industrie Chimiche Caffaro, S.P.A. | Process for making paper and cardboard |
| US6802979B2 (en) | 1999-12-03 | 2004-10-12 | Frank Panning | Composition and method for treating polluted waters and water sediments |
| DE10037018B4 (de) * | 2000-07-29 | 2015-03-12 | Heiko Hilbert | Anwendung von monomeren, dimeren und polymeren Aluminiumnitrat-Verbindungen zur Wasser-, Abwasser- und Prozessaufbereitung im industriellen Bereich, vornehmlich in der Papier- und Zellstoff-Industrie |
| DE102009055387A1 (de) * | 2009-12-29 | 2011-06-30 | Yara International Asa | Abwasserbehandlungsmittel mit oxidativer Wirkung und Verfahren zur Behandlung von Abwasser |
| CN113185024A (zh) * | 2021-04-25 | 2021-07-30 | 吉林梅基特环保科技有限公司 | 一种凝结水的净化方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3838864C2 (enrdf_load_stackoverflow) | 1991-12-05 |
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