GB1501335A - Process for slow softening water - Google Patents
Process for slow softening waterInfo
- Publication number
- GB1501335A GB1501335A GB10756/76A GB1075676A GB1501335A GB 1501335 A GB1501335 A GB 1501335A GB 10756/76 A GB10756/76 A GB 10756/76A GB 1075676 A GB1075676 A GB 1075676A GB 1501335 A GB1501335 A GB 1501335A
- Authority
- GB
- United Kingdom
- Prior art keywords
- caco3
- water
- addition
- slow
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
-
- 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)
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
In a slow decarbonation of water, the calcium compounds contained in the water are converted into CaCO3 by addition of an alkaline-reacting precipitant and passing through a reaction section, and CaCO3 is precipitated out after addition of a flocculant. Before passing through the reaction section, a finely divided crystalline material is added at least at times. This is preferably obtained by, even before addition of the flocculant, allowing part of the CaCO3 formed to settle and withdrawing it and adding it to the incoming water in feedback.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2512107A DE2512107B2 (en) | 1975-03-19 | 1975-03-19 | Process for the slow carbonization of water |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1501335A true GB1501335A (en) | 1978-02-15 |
Family
ID=5941850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10756/76A Expired GB1501335A (en) | 1975-03-19 | 1976-03-17 | Process for slow softening water |
Country Status (11)
Country | Link |
---|---|
JP (1) | JPS6035200B2 (en) |
BE (1) | BE839395A (en) |
CA (1) | CA1056521A (en) |
CH (1) | CH621753A5 (en) |
DE (1) | DE2512107B2 (en) |
ES (1) | ES446176A1 (en) |
FR (1) | FR2304573A1 (en) |
GB (1) | GB1501335A (en) |
IT (1) | IT1060944B (en) |
NL (1) | NL7602741A (en) |
SE (1) | SE422320B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106045109A (en) * | 2016-06-30 | 2016-10-26 | 华电水务工程有限公司 | Treatment method and equipment of high-salinity waste water |
CN115504582A (en) * | 2022-11-09 | 2022-12-23 | 中船第九设计研究院工程有限公司 | Wastewater hardness removing device for gold smelting |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2345396A1 (en) * | 1976-03-24 | 1977-10-21 | Degremont | SLUDGE TREATMENT APPARATUS BY RECIRCULATION, PRECIPITATION AND SEPARATION OF FORMED SLUDGE |
CA1181653A (en) * | 1981-03-24 | 1985-01-29 | Alban Timmons | Process and composition for conditioning an aqueous system |
DE3478222D1 (en) * | 1983-05-27 | 1989-06-22 | Johnson Filtration Systems | Cross-flow microfiltration lime softener |
DE4408862A1 (en) * | 1994-03-16 | 1995-09-21 | Passavant Werke | Method and device for decarbonizing raw water |
-
1975
- 1975-03-19 DE DE2512107A patent/DE2512107B2/en not_active Ceased
-
1976
- 1976-02-24 CH CH222876A patent/CH621753A5/en not_active IP Right Cessation
- 1976-02-27 SE SE7602633A patent/SE422320B/en unknown
- 1976-03-10 BE BE165017A patent/BE839395A/en unknown
- 1976-03-16 CA CA248,134A patent/CA1056521A/en not_active Expired
- 1976-03-16 NL NL7602741A patent/NL7602741A/en not_active Application Discontinuation
- 1976-03-17 GB GB10756/76A patent/GB1501335A/en not_active Expired
- 1976-03-17 IT IT09376/76A patent/IT1060944B/en active
- 1976-03-18 JP JP51028687A patent/JPS6035200B2/en not_active Expired
- 1976-03-18 ES ES446176A patent/ES446176A1/en not_active Expired
- 1976-03-18 FR FR7607801A patent/FR2304573A1/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106045109A (en) * | 2016-06-30 | 2016-10-26 | 华电水务工程有限公司 | Treatment method and equipment of high-salinity waste water |
CN115504582A (en) * | 2022-11-09 | 2022-12-23 | 中船第九设计研究院工程有限公司 | Wastewater hardness removing device for gold smelting |
Also Published As
Publication number | Publication date |
---|---|
SE422320B (en) | 1982-03-01 |
FR2304573B1 (en) | 1980-05-16 |
JPS6035200B2 (en) | 1985-08-13 |
IT1060944B (en) | 1982-09-30 |
NL7602741A (en) | 1976-09-21 |
FR2304573A1 (en) | 1976-10-15 |
CH621753A5 (en) | 1981-02-27 |
SE7602633L (en) | 1976-09-20 |
JPS51128832A (en) | 1976-11-10 |
DE2512107A1 (en) | 1976-10-14 |
BE839395A (en) | 1976-07-01 |
ES446176A1 (en) | 1977-06-01 |
DE2512107B2 (en) | 1979-06-28 |
CA1056521A (en) | 1979-06-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |