FR2169835A1 - Caustic papermaking effluent - purified by acidifying and decolourising - Google Patents
Caustic papermaking effluent - purified by acidifying and decolourisingInfo
- Publication number
- FR2169835A1 FR2169835A1 FR7245454A FR7245454A FR2169835A1 FR 2169835 A1 FR2169835 A1 FR 2169835A1 FR 7245454 A FR7245454 A FR 7245454A FR 7245454 A FR7245454 A FR 7245454A FR 2169835 A1 FR2169835 A1 FR 2169835A1
- Authority
- FR
- France
- Prior art keywords
- effluent
- organics
- decolourising
- acidifying
- caustic
- 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Treating Waste Gases (AREA)
Abstract
Separated effluent from alkaline cellulose paste mfr. is treated by a strong acid (sulphuric) tolower pH to 6.5 (opt. at pH 1.5-2.5) to ppte. non-biodegradable organics, sepg. the liq. and removing remaining organics by combined adsorbent-decolourant action and air oxidn. and then neutralising. C black or active clay may be used as decolourant, added to the effluent and boiled. The method removes lignins and sucm-forming coloured organics at acceptable cost.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES398161A ES398161A1 (en) | 1971-12-20 | 1971-12-20 | Procedure for conditioning the wastewater of the manufacture of cellulosic pastes by alkaline method. (Machine-translation by Google Translate, not legally binding) |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2169835A1 true FR2169835A1 (en) | 1973-09-14 |
FR2169835B1 FR2169835B1 (en) | 1976-08-27 |
Family
ID=8459877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7245454A Granted FR2169835A1 (en) | 1971-12-20 | 1972-12-20 | Caustic papermaking effluent - purified by acidifying and decolourising |
Country Status (3)
Country | Link |
---|---|
ES (1) | ES398161A1 (en) |
FR (1) | FR2169835A1 (en) |
IT (1) | IT972645B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0044058A1 (en) * | 1980-07-11 | 1982-01-20 | Süd-Chemie Ag | Means and method for treating process and effluent water in paper making and related industries |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1100415A (en) * | 1954-03-03 | 1955-09-20 | Applic Biochimiques Soc Et | Process for the purification and use of waste water from the manufacture of paper pulp prepared by the soda process |
-
1971
- 1971-12-20 ES ES398161A patent/ES398161A1/en not_active Expired
-
1972
- 1972-12-20 FR FR7245454A patent/FR2169835A1/en active Granted
- 1972-12-20 IT IT33263/72A patent/IT972645B/en active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1100415A (en) * | 1954-03-03 | 1955-09-20 | Applic Biochimiques Soc Et | Process for the purification and use of waste water from the manufacture of paper pulp prepared by the soda process |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0044058A1 (en) * | 1980-07-11 | 1982-01-20 | Süd-Chemie Ag | Means and method for treating process and effluent water in paper making and related industries |
Also Published As
Publication number | Publication date |
---|---|
FR2169835B1 (en) | 1976-08-27 |
ES398161A1 (en) | 1974-08-16 |
IT972645B (en) | 1974-05-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |