FR2242335A1 - Water purification and sterilization - using chlorination and flocculation by ferrous cpd(s) in reverse order to normal or simultaneously - Google Patents
Water purification and sterilization - using chlorination and flocculation by ferrous cpd(s) in reverse order to normal or simultaneouslyInfo
- Publication number
- FR2242335A1 FR2242335A1 FR7429339A FR7429339A FR2242335A1 FR 2242335 A1 FR2242335 A1 FR 2242335A1 FR 7429339 A FR7429339 A FR 7429339A FR 7429339 A FR7429339 A FR 7429339A FR 2242335 A1 FR2242335 A1 FR 2242335A1
- Authority
- FR
- France
- Prior art keywords
- ferrous
- added
- active chlorine
- esp
- source
- 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
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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The quantity of active chlorine used is sufficient to overcome the reaction threshold and reacts with the ferrous salt(s) to form other ferrous cpds. The flocculant salt(s), the optional oxidn. promoter and the source of active chlorine may be added simultaneously esp. as a premixt., or the source of active chlorine added after the other agents. The ferrous salt used is esp. ferrous chloride, the oxidn. promoter is HCl in stoichiometric quantities relative to the ferrous chloride and the source of active chlorine is sodium hypochlorite. When the last is added after the other additives, the pH value of the finished prodt. is 7.5-8; when all agents are added as a premix simultaneously, the pH value is 6-7, esp. 6. There is significant improvement esp. in terms of pH control compared to conventional method where active chlorine source is added before the flocculant(s).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE135288A BE804425A (en) | 1973-09-04 | 1973-09-04 | WATER TREATMENT AND STERILIZATION PROCESS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2242335A1 true FR2242335A1 (en) | 1975-03-28 |
FR2242335B1 FR2242335B1 (en) | 1979-01-05 |
Family
ID=3842182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7429339A Granted FR2242335A1 (en) | 1973-09-04 | 1974-08-23 | Water purification and sterilization - using chlorination and flocculation by ferrous cpd(s) in reverse order to normal or simultaneously |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE804425A (en) |
CH (1) | CH593211A5 (en) |
ES (1) | ES429313A1 (en) |
FR (1) | FR2242335A1 (en) |
IT (1) | IT1017785B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2385650A1 (en) * | 1977-03-29 | 1978-10-27 | Courtaulds Ltd | COLORED AQUEOUS EFFLUENT TREATMENT |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113371879A (en) * | 2021-06-16 | 2021-09-10 | 华融化学股份有限公司 | Pretreatment method of wastewater containing vinyl chloride |
-
1973
- 1973-09-04 BE BE135288A patent/BE804425A/en unknown
-
1974
- 1974-07-31 IT IT2581874A patent/IT1017785B/en active
- 1974-08-16 ES ES429313A patent/ES429313A1/en not_active Expired
- 1974-08-23 FR FR7429339A patent/FR2242335A1/en active Granted
- 1974-08-26 CH CH1159574A patent/CH593211A5/fr not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2385650A1 (en) * | 1977-03-29 | 1978-10-27 | Courtaulds Ltd | COLORED AQUEOUS EFFLUENT TREATMENT |
Also Published As
Publication number | Publication date |
---|---|
BE804425A (en) | 1974-03-04 |
ES429313A1 (en) | 1976-08-16 |
IT1017785B (en) | 1977-08-10 |
FR2242335B1 (en) | 1979-01-05 |
CH593211A5 (en) | 1977-11-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS51142860A (en) | Method for oxidation treatment of fe2+ in waste liquor | |
NO912182L (en) | PROCEDURE FOR IMPROVING FORMATION PERMEABILITY BY USING CHLORODIOXIDE. | |
DE3464849D1 (en) | Stable, aqueous, acidic solution of cis-platinum, suitable for injection | |
GB1342096A (en) | Method of controlling slime in aqueous systems | |
FI96412C (en) | Process for the preparation of ferric chloride starting from dilute hydrochloric acid | |
FR2242335A1 (en) | Water purification and sterilization - using chlorination and flocculation by ferrous cpd(s) in reverse order to normal or simultaneously | |
JPS5676293A (en) | Application of high polymer flocculant | |
GB1389530A (en) | Water purification | |
GB1508272A (en) | Periodate stabilised hypochlorites | |
GB1415453A (en) | Composition and process for producing aquarium water having improved properties | |
SE8200646L (en) | PREPARATION OF 2,3-EPOXYPROPYLTRIALKYLAMMONIUM CHLORIDE | |
ES284254A1 (en) | A procedure for the production of an alpha-aminobencilopeniline (Machine-translation by Google Translate, not legally binding) | |
GB1183006A (en) | Regeneration of Etchant. | |
GB1427888A (en) | Process for the preparation of trimethylbenzoquinone | |
GB1424817A (en) | Photosensitive elements | |
GB1198676A (en) | Water Treatment Process. | |
AT302527B (en) | Process for the preparation of 6- (D-α-amino-p-hydroxyphenylacetamido) -penicillanic acid with a low water content, or the sodium or potassium salt of this acid | |
SU650980A1 (en) | Method of depoisoning cyanide- and rhodanide-containing waste water | |
KR880000327A (en) | Manufacturing method of high bleaching powder | |
BE786465A (en) | Water purification and sterilisation - using active chlorine and a reducing flocculating agent | |
FR2171890A1 (en) | Drinking water sterilization - by chlorine with bromine and/or iodine | |
VANLEEUWEN et al. | Refinement of a chlorination process unit in water reclamation: technological and cost implications | |
JPS5371698A (en) | Production of water containing highly concentrated available chlorine andstabilizing method for the same | |
GB1070042A (en) | Improvements in or relating to the production of hydroxocobalamine | |
JPS52144145A (en) | Treatment of distilled water |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |