DK166788A - PROCEDURES FOR TREATING WASTE AND OTHER PURIFIED WATER - Google Patents
PROCEDURES FOR TREATING WASTE AND OTHER PURIFIED WATERInfo
- Publication number
- DK166788A DK166788A DK166788A DK166788A DK166788A DK 166788 A DK166788 A DK 166788A DK 166788 A DK166788 A DK 166788A DK 166788 A DK166788 A DK 166788A DK 166788 A DK166788 A DK 166788A
- Authority
- DK
- Denmark
- Prior art keywords
- discharge stream
- cationic polymer
- anionic polymer
- treated discharge
- added
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 239000008213 purified water Substances 0.000 title 1
- 239000002699 waste material Substances 0.000 title 1
- 229920006318 anionic polymer Polymers 0.000 abstract 3
- 229920006317 cationic polymer Polymers 0.000 abstract 3
- 239000000701 coagulant Substances 0.000 abstract 2
- 238000000926 separation method Methods 0.000 abstract 2
- 239000010865 sewage Substances 0.000 abstract 2
- 238000009434 installation Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
-
- 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
-
- 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
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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The process comprises adding all three of the following individually, or at most two, which are premixed, together, to the sewage or other impure water in a mixing zone: (a) an inorganic coagulant, (b) an anionic polymer, and (c) a cationic polymer, while intimately mixing the added chemicals and the sewage or other impure water, with the proviso that (d) the inorganic coagulant, either alone or together with the anionic polymer or the cationic polymer, cannot be added last, and that (e) the anionic polymer and the cationic polymer cannot be premixed and added together. This yields a chemically treated discharge stream which contains large, compact, thermally bound, essentially shearing effect-resistant and rapidly separable flocculates. The flocculates are separated from the liquid in a separation zone. Treated discharge stream is then removed from the separation zone. A previously determined quantity of the treated discharge stream is then recirculated, for example to the mixing zone or to another location which is determined by experimenting with the installation.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US89283186A | 1986-08-04 | 1986-08-04 | |
| US89283186 | 1986-08-04 | ||
| IE113387 | 1987-05-07 | ||
| IE113387 | 1987-05-07 | ||
| IE113487 | 1987-05-07 | ||
| IE113487 | 1987-05-07 | ||
| GB8700549 | 1987-08-03 | ||
| PCT/GB1987/000549 WO1988000927A1 (en) | 1986-08-04 | 1987-08-03 | Method for the treatment of sewage and other impure water |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK166788A true DK166788A (en) | 1988-03-25 |
| DK166788D0 DK166788D0 (en) | 1988-03-25 |
| DK170557B1 DK170557B1 (en) | 1995-10-23 |
Family
ID=27270355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK166788A DK170557B1 (en) | 1986-08-04 | 1988-03-25 | Process for treating sewage and other impure water by means of flocculation |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0316348A1 (en) |
| JP (1) | JPH02500724A (en) |
| KR (1) | KR880701687A (en) |
| AU (1) | AU621032B2 (en) |
| BR (1) | BR8707785A (en) |
| CA (1) | CA1334543C (en) |
| DK (1) | DK170557B1 (en) |
| ES (1) | ES2004466A6 (en) |
| FI (1) | FI890533A7 (en) |
| GR (1) | GR871232B (en) |
| NO (1) | NO174416C (en) |
| PT (1) | PT85484B (en) |
| WO (1) | WO1988000927A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991007354A1 (en) * | 1989-11-15 | 1991-05-30 | Irving Ainsworth (Holdings) Limited | Water treatment method |
| ES2051223B1 (en) * | 1992-06-24 | 1994-12-16 | Titan Ind Sa | CLEANING WATER TREATMENT AND RECOVERY PROCEDURE IN THE MANUFACTURING PROCESS OF WATER DISPERSION PAINTS. |
| CN1248972C (en) * | 1998-11-07 | 2006-04-05 | 宝洁公司 | Method for treating circulating water and composition used therefor |
| GB9916748D0 (en) | 1999-07-19 | 1999-09-15 | Ciba Spec Chem Water Treat Ltd | Process for the flocculation of suspensions |
| US8349188B2 (en) | 2008-02-14 | 2013-01-08 | Soane Mining, Llc | Systems and methods for removing finely dispersed particulate matter from a fluid stream |
| US8353641B2 (en) | 2008-02-14 | 2013-01-15 | Soane Energy, Llc | Systems and methods for removing finely dispersed particulate matter from a fluid stream |
| JP6644607B2 (en) * | 2016-03-30 | 2020-02-12 | 住友重機械エンバイロメント株式会社 | Wastewater treatment system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4173532A (en) * | 1974-03-07 | 1979-11-06 | Entenmann's, Inc. | Method for treating plant effluent |
| JPS5473464A (en) * | 1977-11-22 | 1979-06-12 | Ebara Infilco Co Ltd | Treatment of waste water |
| DE2802066C2 (en) * | 1978-01-18 | 1986-05-28 | Passavant-Werke AG & Co KG, 6209 Aarbergen | Process for the chemical-mechanical treatment of groundwater, surface or wastewater |
| JPS6028894A (en) * | 1983-07-26 | 1985-02-14 | Kurita Water Ind Ltd | How to dispose of human waste |
| US4569768A (en) * | 1983-10-07 | 1986-02-11 | The Dow Chemical Company | Flocculation of suspended solids from aqueous media |
| CH663202A5 (en) * | 1985-01-31 | 1987-11-30 | Escher Wyss Gmbh | METHOD AND ARRANGEMENT FOR CLEANING THE RETURN WATER FROM DEINKING PLANTS. |
-
1987
- 1987-08-03 EP EP87905229A patent/EP0316348A1/en not_active Withdrawn
- 1987-08-03 BR BR8707785A patent/BR8707785A/en unknown
- 1987-08-03 AU AU77557/87A patent/AU621032B2/en not_active Ceased
- 1987-08-03 JP JP62504713A patent/JPH02500724A/en active Pending
- 1987-08-03 WO PCT/GB1987/000549 patent/WO1988000927A1/en not_active Ceased
- 1987-08-04 PT PT85484A patent/PT85484B/en not_active IP Right Cessation
- 1987-08-04 GR GR871232A patent/GR871232B/en unknown
- 1987-08-04 CA CA000543724A patent/CA1334543C/en not_active Expired - Fee Related
- 1987-08-04 ES ES8702285A patent/ES2004466A6/en not_active Expired
-
1988
- 1988-03-24 KR KR1019880700324A patent/KR880701687A/en active Granted
- 1988-03-25 DK DK166788A patent/DK170557B1/en not_active IP Right Cessation
- 1988-03-29 NO NO881414A patent/NO174416C/en unknown
-
1989
- 1989-02-03 FI FI890533A patent/FI890533A7/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| AU7755787A (en) | 1988-02-24 |
| NO174416C (en) | 1994-05-04 |
| AU621032B2 (en) | 1992-03-05 |
| WO1988000927A1 (en) | 1988-02-11 |
| JPH02500724A (en) | 1990-03-15 |
| NO881414L (en) | 1988-03-29 |
| FI890533A0 (en) | 1989-02-03 |
| DK170557B1 (en) | 1995-10-23 |
| PT85484B (en) | 1990-06-29 |
| NO881414D0 (en) | 1988-03-29 |
| NO174416B (en) | 1994-01-24 |
| GR871232B (en) | 1988-02-18 |
| FI890533A7 (en) | 1989-02-03 |
| BR8707785A (en) | 1989-08-15 |
| DK166788D0 (en) | 1988-03-25 |
| ES2004466A6 (en) | 1989-01-01 |
| PT85484A (en) | 1987-09-01 |
| KR880701687A (en) | 1988-11-04 |
| CA1334543C (en) | 1995-02-21 |
| EP0316348A1 (en) | 1989-05-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) | ||
| B1 | Patent granted (law 1993) | ||
| PBP | Patent lapsed |