FR2187701A1 - Precipitating agent - for water purification by roasting natural minerals to give water soluble product contg oxides of silico - Google Patents
Precipitating agent - for water purification by roasting natural minerals to give water soluble product contg oxides of silicoInfo
- Publication number
- FR2187701A1 FR2187701A1 FR7219867A FR7219867A FR2187701A1 FR 2187701 A1 FR2187701 A1 FR 2187701A1 FR 7219867 A FR7219867 A FR 7219867A FR 7219867 A FR7219867 A FR 7219867A FR 2187701 A1 FR2187701 A1 FR 2187701A1
- Authority
- FR
- France
- Prior art keywords
- oxides
- silico
- roasting
- precipitating agent
- natural minerals
- 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.)
- Withdrawn
Links
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
Landscapes
- Chemical & Material Sciences (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)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Sludge (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
Agent consists of a mixt. of minerals, the major part of which is soluble in water, at least after roasting which have a molar ratio basic oxides/acid oxides in the mixt. of 1.0-5.0, and have the following compsn. after roasting 15-40% SiO2, 5-15% Al2O3. 3-12% Fe2O3, 15-17% CaO, and 0.1-20% MgO. The agent efficiently forms micro- and macro-flakes to form a sludge which is compact and can be easily dewatered. The sedimentation rate is high, and the pptn. of metals is promoted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE192271A SE347954B (en) | 1971-02-15 | 1971-02-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2187701A1 true FR2187701A1 (en) | 1974-01-18 |
Family
ID=20259073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7219867A Withdrawn FR2187701A1 (en) | 1971-02-15 | 1972-06-02 | Precipitating agent - for water purification by roasting natural minerals to give water soluble product contg oxides of silico |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE2206523A1 (en) |
FR (1) | FR2187701A1 (en) |
NL (1) | NL7201907A (en) |
NO (1) | NO129788B (en) |
SE (1) | SE347954B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0030017A1 (en) * | 1979-11-28 | 1981-06-10 | Feldmann-Chemie KG Inh. Hagen Feldmann | Liquid aqueous inorganic flocculating agent |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4118319A (en) * | 1976-03-11 | 1978-10-03 | Toyo Soda Manufacturing Co., Ltd. | Treatment of sludge |
DE2843053A1 (en) * | 1978-10-03 | 1980-04-24 | Bayer Ag | FELLING AGENT FOR THE DEPHOSPHATIZATION OF WASTEWATER AND METHOD FOR THE PRODUCTION THEREOF |
EP0056068B1 (en) * | 1981-01-14 | 1985-07-17 | Henkel Kommanditgesellschaft auf Aktien | Method of treating waste waters |
JPH0673666B2 (en) * | 1988-10-21 | 1994-09-21 | 宇部興産株式会社 | Waste liquid treatment method |
-
1971
- 1971-02-15 SE SE192271A patent/SE347954B/xx unknown
-
1972
- 1972-02-11 DE DE19722206523 patent/DE2206523A1/en active Pending
- 1972-02-14 NL NL7201907A patent/NL7201907A/xx unknown
- 1972-02-14 NO NO41272A patent/NO129788B/no unknown
- 1972-06-02 FR FR7219867A patent/FR2187701A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0030017A1 (en) * | 1979-11-28 | 1981-06-10 | Feldmann-Chemie KG Inh. Hagen Feldmann | Liquid aqueous inorganic flocculating agent |
Also Published As
Publication number | Publication date |
---|---|
DE2206523A1 (en) | 1972-08-31 |
NL7201907A (en) | 1972-08-17 |
NO129788B (en) | 1974-05-27 |
SE347954B (en) | 1972-08-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |